NCS drilling – Trac



SUBSEA EQUIPMENT AND PRODUCTION

TERMINOLOGY

|DATE OF FIRST ISSUE: |PROJECT NO: |DET NORSKE VERITAS AS |

| | |INFORMATION QUALITY MANAGEMENT|

| | |Integrated Information |

| | |Platform Project |

| | | |

| | |1322 Høvik |

| | |Norway |

| | |Tel: +47 67 57 99 00 |

| | |Fax: +47 67 57 99 11 |

| | | |

| | |NO 945 748 931 MVA |

|22. 05.2005 |94010900 | |

|Approved by: |Organisational unit: | |

|Pål Rylandsholm/Nils Sandsmark |Information Quality Management | |

|Client: |Client ref.: | |

|Statoil |Roald Loug Hansen | |

|Summary: |

|This document contains the suggested terminology to be used for main subsea equipment and subsea production data for the Tyrihans project. |

|This document is generated based on a terminology that has been developed by the joint industry project Integrated Information Platform for |

|reservoir and subsea production systems (IIP). It is financed by participating companies and the Norwegian Research Council. |

|The Reference Data Library that contains the IIP project results is the IPR of the POSC Caesar Association and is intended for standardization at |

|ISO. |

| |

|Report No: |Subject Group: |Date of this revision: |Revision No: |Number of pages: |

|2005-0866 | |22.07.2005 |1 | |

|Report title: |

|SUBSEA EQUIPMENT AND SUBSEA PRODUCTION TERMINOLOGY |

|© 2005 Det Norske Veritas AS |

|All rights reserved. This publication or parts thereof may not be reproduced or transmitted in any form or by any means, including photocopying or |

|recording, without the prior written consent of Det Norske Veritas AS. |

Table of Contents Page

1 Introduction 2

2 ISO 15926 general description 2

3 Integrated Information Platform FOR RESERVOIR AND SUBSEA PRODUCTION SYSTEMS (IIP) project 3

4 How to use the terminology 4

5 Improvement TO the terminology 7

6 Terminology 7

6.1 Subsea equipment 7

6.1.1 Well types 8

6.1.2 Well assemblies and wellbore completions. 10

6.1.3 Drilling and boreholes 14

6.1.4 Christmas trees 17

6.1.5 Structures and templates, including pipelines. 19

6.1.6 Control system 24

6.1.7 Valves, actuators and valve operation 28

6.1.8 Other equipment terms 36

6.2 Production data 37

6.2.1 Flow rate, contents and fraction terms. 37

6.2.2 Production volume terms 39

6.2.3 Production mass (weight) terms 46

6.2.4 Definitions of pressure terms. 48

6.2.5 Definitions of temperature terms. 50

6.2.6 Definitions of Names, Dates and other information terms 52

6.2.7 Miscellaneous production related terms 54

6.3 Generic data 56

Introduction

This document is a deliverable from the Integrated Information Platform for reservoir and subsea production systems (IIP) project to Statoil’s Tyrihans field development project. It contains two tables giving the terminology for subsea equipment and subsea production data recommended by the IIP project.

The terminology has been developed and modeled in ISO 15926 Part 4 - Reference Data Library (RDL).

The document also contains a description of ISO 15926 (both the data model and the RDL), a description of the IIP project, and an explanation on how to use the terminology.

ISO 15926 general description

The scope of ISO 15926 can be divided into two main categories

1. Support exchange of data between computer systems without loss of, or confusion in the semantic meaning of data.

2. To provide a platform for integration of life cycle data across multiple applications and across disciplines.

Data integration is combining information derived from several independent sources into one coherent data set. Because independent sources often have overlapping scopes, combining the data requires overlaps to be recognized, duplications to be removed, and possibly new data to be represented. To succeed in the role of integration, a data model must have a context that includes all the possible data wanted or required.

To support this, ISO 15926 defines a generic and conceptual data model that is independent of any particular industry and application, and a Reference Data Library (RDL) that extends the data model to include the specific needs of any industry or application. The conceptual model defines the rules for describing ‘things’ and basic semantics, while the Reference Data (RD) extends the semantics into specific industries or business areas by establishing a set of terminology that is used to describe object types in specific industries. Where industries are using same types of objects, e.g. pipes, cables, steel profiles etc., RD can be reused across industries. Whenever a term is used across industries/disciplines with different meanings the process of establishing the RD ensures unambiguous terminology. This is required both for unambiguous exchange of data and for integration of data for an actual project. A consequence of this approach is that data is defined independent of applications. This approach therefore also supports the introduction of new work processes and business process reengineering.

The generic and conceptual design of ISO 15926 allows for extensions to cover new areas by only adding new RD.

To ensure that the data necessary for a particular type of objects or subject area is covered, Product Models (PM) using Reference Data are established for the relevant types of products. These PMs can be seen as templates for the types or groups of data required for the actual type of product. The intention is that these PMs shall describe all data required for a type of product over its life cycle. If additional applications need to be supported, the actual PMs could be extended by adding the additional RD required to fully supporting the requirements of the additional application. This results in integrating the data needs for the new application with the data needs that have already been defined for existing applications. PMs may be defined for types of mechanical products, systems, documents, reservoirs, organizations and activities. In this manner records are built for what is known about a type of object.

Integrated Information Platform FOR RESERVOIR AND SUBSEA PRODUCTION SYSTEMS (IIP) project

The IIP project is a three year project which commenced in June 2004. It is funded by the Norwegian Research Council and the project participants.

The IIP project has the objective of identifying an optimal set of real time data from reservoirs, wells and subsea production facilities, partially improving and integrating this information to provide an open and standardised information platform using ISO 15926-2.

The project will be enabled by integrating the ontologies from several industrial data and technical standards and adding these ontologies to ISO 15926-4 (Reference Data Library). The number of information types and the broad scope of this integration in an open solution make this project unique. In addition, safety requirements according to the Norwegian Petroleum Directorate (NPD) will be met.

The IIP project focus is to support integration of applications related to subsea oil&gas exploration and production. In order to support this, the project is developing PMs for reservoir and subsea production systems by using information from the following areas:

- Geometry and topology

- Seismic

- Drilling (WITSML)

- Reservoir characterization

- Production

- Safety and automation system

- Subsea equipment

- Reliability and maintenance (ISO 14224)

- Reservoir uncertainty.

The intention is to cover data required for any application, but at this stage only alpha-numeric data is covered. 3D geometry may be added at later stage.

The terminology included in this document is a part of the model – or Reference Data Library - developed in the project. The library is the IPR of the POSC Caesar Association and is intended for future standardization at ISO. The standardization process in ISO has not yet been completed; hence some changes might occur due to comments from other ISO members. These changes will be handled and documented by the IIP project.

The Tyrihans field, where Statoil is the operator is used as a case in the project. The specifications from Tyrihans have been used for selecting an initial set of terms for subsea equipment. This set has been further generalized; mainly by including additional terms defined in ISO 13628 “Petroleum and natural gas industries – Design and operation of subsea production systems”.

How to use the terminology

The types of data that are used when describing ‘things’ can be classified as either data about ‘objects’ or ‘properties’ related to objects.

Each type of object and property is documented in this document using:

A term

A definition

A typical PM for a wellhead with Christmas tree is shown in figure 1 below. Examples of terminology related to the Christmas tree are shown in table 1 and table 2.

[pic]

Figure 1: Drawing of a wellhead with Christmas tree. Names of some objects, or parts thereof, are shown in boxes. Properties are in italic.

All objects are arranged in super-subtype hierarchies where the more specialized object is a subtype of a more generic object. This can bee seen from the example table, Table 1, which follow.

In Table 1 it should be clear that a “Subsea horizontal Christmas tree” is a subtype of a “HORIZONTAL CHRISTMAS TREE” which again is a subtype of a “CHRISTMAS TREE”. Note that a “SUBSEA HORIZONTAL CHRISTMAS TREE” is also a subtype of a “SUBSEA CHRISTMAS TREE”; the second specialization is recorded in the RDL, but has been left out in the documentation table to try to limit the size of the table.

Table 1: A typical record documenting Christmas tree types:

|TERM |DEFINITION |

|CHRISTMAS TREE |An artefact that is an assembly of pipes and piping parts, with valves and |

| |associated control equipment that is connected to the top of a wellhead and is|

| |intended for control of fluid from a well. |

| |HORIZONTAL CHRISTMAS TREE |A Christmas tree configured with the master valves and flow-control equipment |

| | |on a horizontal axis to minimize the assembly height. |

| | |SUBSEA HORIZONTAL CHRISTMAS TREE |A horizontal Christmas tree design for subsea applications. The valves can be |

| | | |both bolted on or built in. |

| | |SURFACE HORIZONTAL CHRISTMAS TREE |A horizontal Christmas tree design for surface (dry land) applications. The |

| | | |valves are normally bolted on. |

| |VERTICAL CHRISTMAS TREE |A Christmas tree configured with the master valves and flow-control equipment |

| | |on a vertical axis that is the main axis of the tree. |

| | |SUBSEA VERTICAL CHRISTMAS TREE |A vertical Christmas tree design for subsea applications. The valves are |

| | | |normally built-in as part of the tree. |

| |SUBSEA CHRISTMAS TREE |A christmas tree for use in a subsea environment. Will normally comprise a |

| | |hollow, pressure rated body with the valves either built in or bolted on. |

| |CHRISTMAS TREE 10K |A Christmas tree rated for a pressure of 10 000 PSI (69,0 MPa) |

| |CHRISTMAS TREE 15K |A Christmas tree rated for a pressure of 15 000 PSI (103,5 MPa) |

| |CHRISTMAS TREE 5K |A Christmas tree rated for a pressure of 5 000 PSI (34,5 MPa) |

| |SURFACE CHRISTMAS TREE |A Christmas tree for use on land. Will normally comprise a number of assembled|

| | |parts, e.g. casing spools, with the valves bolted onto the outside. |

The two dimensional structure in the tables of this document is only suitable to show the specialization hierarchy, as shown in the example in Table 1. In the Reference Data Library (RDL) other relations between objects are recorded. As shown in the example in Table 2, a “HORIZONTAL CHRISTMAS TREE” will normally have parts called a “CHRISTMAS TREE CAP”, “WELL PRODUCTION TUBING ASSEMBLY”, “WELL CASING ASSEMBLY”, “CASING HANGER” and “CHRISTMAS TREE VALVES” which again might be “ANNULUS VENT VALVE”, “ANNULUS MASTER VALVE”, “ANNULUS WING VALVE”, “ANNULUS CIRCULATION VALVE”, “CROSS OVER VALVE”, “CHEMICAL INJECTION VALVE”, “PRODUCTION MASTER VALVE” or “PRODUCTION WING VALVE”, and so on. These kinds of relations are not shown explicit in the terminology tables, but they exist in the RDL. An example might be clarifying: If a user is looking for the term “CASING HANGER” it will probably not be found under “HORIZONTAL CHRISTMAS TREE” in the terminology of this document. In stead it will be found under the less specialized term STRING HANGER”, which is the “super class” of “CASING HANGER”. In the RDL, however, the user will be able to look up “HORIZONTAL CHRISTMAS TREE” and see that “CASING HANGER” is a part of it.

Table 2:.Typical associations and properties made to a horizontal Christmas tree:

|TERM |DEFINITION |

|HORIZONTAL CHRISTMAS TREE |A Christmas tree configured with the master valves and flow-control equipment|

| |on a horizontal axis to minimize the assembly height. |

| |CHRISTMAS TREE CAP |An artefact used to cap the top of the christmas tree, to prevent ingress of |

| | |contaminants, such as seawater. |

| |WELL PRODUCTION TUBING ASSEMBLY |An artefact designed to control production of the well. It normally consists |

| | |of a string of tubing pipes reaching down to (one or more) productive zones |

| | |in a well. |

| |WELL CASING ASSEMBLY |An artefact which is the assembly of casing pies, casing hanger and seals |

| | |that is lowered into a well, and provides structural support for the |

| | |borehole. |

| |CASING HANGER |A string hanger designed to suspend a well casing string down the well. The |

| | |casing hanger is either screwed onto the top of each casing string or is held|

| | |by slips. Acts as a wedge in a corresponding space inside the casing head, |

| | |casing spool or wellhead |

| |CHRISTMAS TREE VALVE |A valve which is located on a christmas tree, for injection or fluid control.|

| | |ANNULUS VENT VALVE |A valve which is located in the annulus outlet of the christmas tree for |

| | | |venting overpressure from the well annulus. |

| | |PRODUCTION MASTER VALVE |A valve which is located in the production outlet of the christmas tree being|

| | | |the main production barrier valve |

| | |PRODUCTION WING VALVE |A valve which is located in the production outlet of the christmas tree being|

| | | |the secondary production barrier valve |

| | |ANNULUS MASTER VALVE |A valve which is located in the annulus outlet of the christmas tree being |

| | | |the main annulus barrier valve |

| | |ANNULUS WING VALVE |A valve which is located in the annulus outlet of the christmas tree being |

| | | |the secondary annulus barrier valve |

| | |ANNULUS CIRCULATION VALVE |A valve which is located in the annulus outlet of the christmas tree for use |

| | | |when circulating in the well |

| | |CROSSOVER VALVE |A valve which is located in the crossover loop |

| | |CHEMICAL INJECTION VALVE |A valve which is used to control injection of chemicals into the well or |

| | | |flowline |

| |TH CROWN PLUG |A plug used in a tubing hanger to block the tubing hanger bore. |

| |TUBING HANGER |A string hanger designed to suspend a well tubing string down the well. The |

| | |tubing hanger uses slips or a bolted flange to hold the tubing string and |

| | |fits as a wedge in the tubing head. |

| |WELL CASING STRING |An artefact that consists of pipes assembled end to end which is intended to |

| | |line the walls of a drilled well. |

| |WELL TUBING STRING |An artefact that consists of lengths of pipe assembled end to end that |

| | |extends from a producing zone to the wellhead, and used in a well to conduct |

| | |fluids to the surface. |

| |WELLHEAD HOUSING |An artefact which is a thick-walled forged cylindrical pipe with one end |

| | |attached to the surface (normally 20") casing string and the other end has |

| | |couplings for connecting to a christmas tree. |

Improvement TO the terminology

Discussable or faulty terms and definitions in the terminology will occur. Useful terms and definitions might lack, or the naming or definitions in existing terms might be imprecise or faulty. Cases like this should be reported back to Statoil, who will see to that the issues are handled by the IIP project.

Terminology

1 Subsea equipment

For easier readability, the table has been split into sub-tables and grouped according to common usage, see the table of contents.

Note that for classes with nominal size designations, e.g. “PIPE SECTION 10 NPS”, only one or two examples have been included in the list, to show the existence of these classes. The RDL contains the full set of classes.

Note also that a number of generic terms and definitions have been listed in section 6.1.3.

1 Well types

|WELL |A device that is arranged to obtain, produce, store or inject a material into |

| |the earth |

| |ABANDONED WELL |A well that has been abandoned |

| | |CAPPED WELL |A well that has been closed down permanently |

| | |PLUGGED AND ABANDONED WELL |A well that has been plugged and abandoned |

| | |TEMPORARILY ABANDONED WELL |A well that has been temporarily abandoned |

| |ACTIVE WELL |A well that is active. |

| |BLOWOUT RELIEF WELL |A well that has been made to relieve pressure in a well that suffers a blowout.|

| | |The well is normally drilled to intersect the blowing well underground |

| |BOREHOLE REACQUISITION WELL |A well that has been made to re-acquisition a license |

| |DRILLING SUSPENDED WELL |A well that where drilling is being suspended. |

| |DRILLING WELL |A well that is being drilled. |

| |DRY WELL |A well that has been drilled and not found hydrocarbons. |

| |EXPLORATION WELL |A well made to search for commercially exploitable resources |

| | |APPRAISAL WELL |An exploration well drilled in the vicinity of a discovery or a wildcat well in|

| | | |order to evaluate the extent and the importance of the find. |

| | |CONFIRMATION APPRAISAL WELL |An exploration well drilled in the vicinity of an appraisal well to further |

| | | |confirm the discovery |

| | |DELINEATION WELL |An exploration well drilled to discover the extent of the find. |

| | |DEVELOPMENT WELL |An exploration well drilled in an area already proven to be productive. |

| | |DISCOVERY WELL |An exploration well that encounters a new and previously untapped petroleum |

| | | |deposit; a successful wildcat well |

| | |EXPLORATORY APPRAISAL WELL |An exploration well drilled in the vicinity of an appraisal well to further |

| | | |explore the discovery |

| | |INFILL DEVELOPMENT WELL |An exploration well that is located between established producing wells on a |

| | | |lease. |

| | |NPD SHALLOW BOREHOLE WELL |An exploration well drilled as a shallow hole for geological purposes, as |

| | | |defined by NPD |

| | |RESEARCH WELL |A well used for research purposes. |

| | |STEP-OUT WELL |An exploration well drilled adjacent to a proven well but located in an |

| | | |unproven area |

| | |WILDCAT WELL |An exploration well drilled in an unproven area |

| | | |DEEPER POOL WILDCAT WELL |A wildcat well drilled into a deeper formation. |

| | | |NEW FIELD WILDCAT WELL |A wildcat well drilled in a new field. |

| | | |NEW POOL WILDCAT WELL |A wildcat well drilled in a new pool. |

| | | |SHALLOW POOL WILDCAT WELL |A wildcat well drilled in a shallow pool. |

| |FLUID STORAGE WELL |A well that has been made for use as fluid storage |

| |INJECTION WELL |A well in which a fluid is injected, normally with a pressure higher than the |

| | |formation pressure |

| | |CUTTINGS INJECTION WELL |An injection well for injecting drill cuttings. |

| | |GAS INJECTION WELL |An injection well for injecting gas |

| | |WATER INJECTION WELL |An injection well for injecting water |

| |MINERAL WELL |A well that has been made for extracting minerals (other than hydrocarbons). |

| |OBSERVATION WELL |A well that has been made for observation purposes |

| |PERMITTED WELL |A well that for which a permit for drilling or production has been given. |

| |PLUGGED WELL |A well that has been plugged. |

| | |PARTIALLY PLUGGED WELL |A well that has been partially plugged. |

| | |PLUGGED AND ABANDONED WELL |A well that has been plugged and abandoned |

| |PRODUCING WELL |A well from which a material, normally a fluid, is obtained |

| | |CONDENSATE PRODUCING WELL |A producing well that flows condensate |

| | |GAS PRODUCING WELL |A producing well that flows gas |

| | |OIL PRODUCING WELL |A producing well that flows oil. |

| | |WATER PRODUCING WELL |A producing well that flows water |

| |PROPOSED WELL |A well that has been proposed |

| |SUSPENDED WELL |A well that where activities have been suspended. |

| |TEST WELL |A well that is drilled for testing purposes. |

| | |DRILLING TEST WELL |A test well that is drilled to test the rock and determine optimum drilling |

| | | |parameters? |

| | |STRATIGRAPHIC TEST WELL |A test well that is drilled to test the rock and determine optimum drilling |

| | | |parameters? |

| |WASTE DISPOSAL WELL |A well that has been made for the disposal of waste. |

| |WATER DISPOSAL WELL |A well that has been made for the disposal of water. |

|OIL POOL |An artefact that is a single underground reservoir having its own pressure |

| |system so that wells drilled in any part of the pool affect the reservoir |

| |pressure throughout the pool. |

2 Well assemblies and wellbore completions.

|WELL ASSEMBLY |An artefact which is an assembly of equipment for the exploitation of |

| |underground hydrocarbon resources. |

| |ARTIFICIAL LIFT WELL ASSEMBLY |A well assembly having equipment to help obtaining the fluid from the well|

| | |GAS LIFT WELL ASSEMBLY |An artificial lift well assembly where gas is used to lift the producing |

| | | |fluid |

| | |PUMPED WELL ASSEMBLY |An artificial lift well assembly where a pump is used to lift the |

| | | |producing fluid |

| | |SUBSURFACE PUMPED WELL ASSEMBLY |A pumped well assembly where the pump is located in the wellbore |

| | |SURFACE PUMPED WELL ASSEMBLY |A pumped assembly well where the pump is located at the wellhead |

| |HORIZONTAL CHRISTMAS TREE WELL ASSEMBLY |A well assembly with a horizontal christmas tree |

| |MULTILATERAL WELL ASSEMBLY |A well assembly that has a main bore and one or more bores branching out |

| | |from the main bore. |

| |MULTIZONE WELL ASSEMBLY |A well assembly that is arranged to produce from more than one pay zone or|

| | |formation. |

| |SATELLITE WELL ASSEMBLY |A well assembly that is a stand-alone installation |

| |SMART WELL ASSEMBLY |A well assembly that includes equipment for intelligent control of the |

| | |well |

| |SUBSEA WELL ASSEMBLY |A well assembly located under a body of water |

| | |SUBSEA HORIZONTAL CHRISTMAS TREE SATELLITE WELL ASSEMBLY |A subsea satellite horizontal christmas tree well assembly. |

| | |SUBSEA HORIZONTAL CHRISTMAS TREE TEMPLATE WELL ASSEMBLY |A subsea template horizontal christmas tree well assembly. |

| | |SUBSEA HORIZONTAL CHRISTMAS TREE SATELLITE WELL ASSEMBLY |A subsea satellite horizontal christmas tree well assembly. |

| | |SUBSEA VERTICAL CHRISTMAS TREE SATELLITE WELL ASSEMBLY |A subsea satellite vertical (conventional) christmas tree well assembly. |

| | |SUBSEA VERTICAL CHRISTMAS TREE SATELLITE WELL ASSEMBLY |A subsea satellite vertical (conventional) christmas tree well assembly. |

| | |SUBSEA VERTICAL CHRISTMAS TREE TEMPLATE WELL ASSEMBLY |A subsea template vertical (conventional) christmas tree well assembly. |

| |SURFACE WELL ASSEMBLY |A well assembly located on dry land |

| | |TIE-BACK WELL ASSEMBLY |A surface well assembly where the wellhead is located on the seabed |

| |TEMPLATE WELL ASSEMBLY |A well assembly that is located on a template grouped with other well |

| | |assemblies. |

| |VERTICAL CHRISTMAS TREE WELL ASSEMBLY |A well assembly with a vertical (conventional) christmas tree |

|WELLBORE COMPLETED SECTION |A section that is part of a completed wellbore. |

| |ACID TREATED WELLBORE SECTION |A wellbore section that has been treated with an acid, |

| |BRANCHED WELLBORE SECTION |A wellbore section that is a branch off the main wellbore. |

| |CEMENT ZONE WELLBORE SECTION |A wellbore section characterized by the cementing job (length, type of |

| | |cement, etc.). |

| |DAMAGED CASING WELLBORE SECTION |A wellbore section where the casing has been damaged, |

| |FRACTURED ZONE WELLBORE SECTION |A wellbore section that has been fractured |

| |GRAVEL PACK WELLBORE SECTION |A wellbore section that is completed with a gravel pack. |

| |PENETRATED WELLBORE SECTION |A wellbore section that has been penetrated. |

| |REPAIRED CASING WELLBORE SECTION |A wellbore section where the casing has been repaired or reconditioned, |

| |SLOTTED LINER WELLBORE SECTION |A lined wellbore section completed with a slotted liner. |

| |WASH TREATED WELLBORE SECTION |A wellbore section that has been washed, |

|WELL CASING ASSEMBLY |An artefact which is the assembly of casing pies, casing hanger and seals |

| |that is lowered into a well, and provides structural support for the |

| |borehole. |

| |WELL CASING ASSEMBLY NPS 20 INS |A well casing assembly with a 20 inch casing string. |

| |WELL CONDUCTOR CASING ASSEMBLY |A well casing assembly set to support the surface formations and prevent |

| | |the sides from the hole from caving into the borehole. |

| |WELL INTERMEDIATE CASING ASSEMBLY |A well casing assembly, normally the casing set between the surface casing|

| | |and the conductor casing. |

| |WELL PRODUCTION CASING ASSEMBLY |A well casing assembly, normally the innermost casing set, and inside |

| | |which the production tubing is installed. |

| |WELL SURFACE CASING ASSEMBLY |A well casing assembly, normally the first casing set in the well, inside |

| | |the conductor pipe. |

|CASING HANGER |A string hanger designed to suspend a well casing string down the well. |

| |The casing hanger is either screwed onto the top of each casing string or |

| |is held by slips. Acts as a wedge in a corresponding space inside the |

| |casing head, casing spool or wellhead housing. |

| |CASING HANGER NPS 18 3/4 X 13 3/8 INS |A casing hanger for a 13 3/8 inch casing string set in an 18 3/4 inch |

| | |bore. |

|WELL CASING STRING |An artefact that consists of pipes assembled end to end which is intended |

| |to line the walls of a drilled well. |

| |WELL CASING STRING 20 NPS |A 20 inch well casing string. |

|WELL CONDUCTOR CASING ASSEMBLY |A well casing assembly set to support the surface formations and prevent |

| |the sides from the hole from caving into the borehole. |

| |SUBSEA WELL CONDUCTOR CASING ASSEMBLY |A well conductor assembly intended for use on a subsea well. |

|WELL PRODUCTION TUBING ASSEMBLY |An artefact designed to control production of the well. It normally |

| |consists of a string of tubing pipes reaching down to (one or more) |

| |productive zones in a well. |

| |WELL PRODUCTION TUBING ASSEMBLY NPS 7 INS |A well production tubing assembly including 7 inch tubing string. |

|WELL TUBING STRING |An artefact that consists of lengths of pipe assembled end to end that |

| |extends from a producing zone to the wellhead, and used in a well to |

| |conduct fluids to the surface. |

| |WELL TUBING STRING 7 NPS |A 7 inch well tubing string. |

|TUBING HANGER |A string hanger designed to suspend a well tubing string down the well. |

| |The tubing hanger uses slips or a bolted flange to hold the tubing string |

| |and fits as a wedge in the tubing head. |

| |CONCENTRIC TUBING HANGER | |A tubing hanger with the tubing axis concentric with the wellhead axis. |

| |ECCENTRIC TUBING HANGER | |A tubing hanger with the axis of the production tubing parallel with the |

| | | |wellhead axis. |

| |HORIZONTAL TUBING HANGER | |A tubing hanger having the production bore branching off at right angles |

| | | |from the main bore. |

|WELLHEAD HOUSING |An artefact which is a thick-walled forged cylindrical pipe with one end |

| |attached to the surface (normally 20") casing string and the other end has|

| |couplings for connecting to a christmas tree. |

| |WELLHEAD HOUSING 10K |A wellhead housing rated to 10 000 psi working pressure. |

| |WELLHEAD HOUSING 15K |A wellhead housing rated to 15 000 psi working pressure. |

| |WELLHEAD HOUSING 2K |A wellhead housing rated to 2 000 psi working pressure. |

| |WELLHEAD HOUSING 5K |A wellhead housing rated to 5 000 psi working pressure. |

| |WELLHEAD HOUSING MANDREL END |A wellhead housing with an upper end having two or more external circular |

| | |grooves. |

| |WELLHEAD HOUSING HUB END |A wellhead housing with an upper hub profile end for use with a standard |

| | |connector. |

|PLUG |An artefact that is a part fitting tightly into a hole and blocking it up.|

| |EXPANDABLE PLUG |A plug that has a smaller initial outside diameter that then expands |

| | |externally to seal the hole. |

| | |WELL PACKER |An expandable plug that is run into a wellbore, used to seal the annulus |

| | | |between the tubing and the wellbore. |

| |TH CROWN PLUG |A plug used in a tubing hanger to block the tubing hanger bore. |

|PLUG CATCHER |An artefact designed to prevent a plug from falling (into a well). |

3 Drilling and boreholes

|DUG HOLE |A hole that is formed using a digging or excavating process |

|BOREHOLE |A hole formed in the earth using a drilling or boring process |

| |BOREHOLE 9 7/8 NPS |A borehole with a diameter of 9 7/8 inches. |

| |CURVED BOREHOLE |A borehole extending substantially curved. |

| |HORIZONTAL BOREHOLE |A borehole extending substantially horizontally. |

| |SLANTED BOREHOLE |A borehole extending at an angle from the vertical |

| |STRAIGHT BOREHOLE |A borehole extending substantially straight. |

| |VERTICAL BOREHOLE |A borehole extending substantially vertically. |

|BOREHOLE SECTION |A section that is part of a borehole. |

| |BHA RUN BOREHOLE SECTION |A borehole section defined as the length drilled in one BHA assembly run. |

| |BIT RUN BOREHOLE SECTION |A borehole section defined as the length drilled with one drill bit. |

| |BOREHOLE SECTION 9 7/8 NPS |A borehole section with a diameter of 9 7/8 inches. |

| |BRANCHED BOREHOLE SECTION |A borehole section that is a branch from the main borehole. |

| |CIRCULATION FLUID TYPE BOREHOLE SECTION |A zoned borehole section characterized by being drilled with a specific |

| | |fluid. |

| |CORED LENGTH BOREHOLE SECTION |A borehole section defined as the length drilled with a core bit. |

| |CURVED BOREHOLE SECTION |A borehole section that is curved. |

| |DOGLEG BOREHOLE SECTION |A borehole section that is a dogleg, e.g. an unintentional deviation or |

| | |bend in the normal direction of the hole. |

| |DRILLING LOG RUN BOREHOLE SECTION |A borehole section defined as the length recorded in a drilling log run. |

| |GAMMA LOG RUN BOREHOLE SECTION |A borehole section defined as the length recorded in a gamma log run. |

| |GEOLOGICAL BOREHOLE SECTION |A borehole section defined by a geological feature. |

| | |DOLOMITE BOREHOLE SECTION |A geological borehole section that is a limestone |

| | |LIMESTONE BOREHOLE SECTION |A geological borehole section that is a limestone |

| | |SANDSTONE BOREHOLE SECTION |A geological borehole section that is a sandstone |

| | |SHALE BOREHOLE SECTION |A geological borehole section that is a shale |

| | |UTSIRA BOREHOLE SECTION |A geological borehole section that is the Utsira formation. |

| |HORIZONTAL BOREHOLE SECTION |A borehole section that is horizontal. |

| |KICKOFF BOREHOLE SECTION |A borehole section defined as the length used to change direction of the |

| | |trajectory. |

| |LOST CIRCULATION FLUID ZONE BOREHOLE SECTION |A zoned borehole section characterized by fluid entering into the |

| | |formation. |

| |PRESSURE ZONE BOREHOLE SECTION |A zoned borehole section characterized by having a specific pressure. |

| |REAMED LENGTH BOREHOLE SECTION |A borehole section defined as the length drilled with a reaming tool. |

| |RESISTIVITY LOG RUN BOREHOLE SECTION |A borehole section defined as the length recorded in an electric log run. |

| |ROP LENGTH BOREHOLE SECTION |A borehole section defined as the length drilled with a specific rate of |

| | |penetration (ROP). |

| |SHIFT BOREHOLE SECTION |A borehole section defined as the length drilled during one working shift.|

| |SLANTED BOREHOLE SECTION |A borehole section that is slanted. |

| |STRAIGHT BOREHOLE SECTION |A borehole section that is straight. |

| |TEMPERATURE ZONE BOREHOLE SECTION |A zoned borehole section characterized by having a specific temperature. |

| |VERTICAL BOREHOLE SECTION |A borehole section that is vertical. |

| |WHIPSTOCK SET BOREHOLE SECTION |A borehole section defined as the length of the whipstock |

|WHIPSTOCK |An artefact that is a tool used to change the direction of the borehole, |

| |or to start a branch hole. |

|DRILL BIT |An artefact which is the cutting or pulverizing tool or head in the end of|

| |a drill string. |

| |DRILL BIT 9 7/8 NPS |A drill bit with a diameter of 9 7/8 inches. |

| |REAMING BIT |A drill bit designed to enlarge a previously drilled hole. |

| | |KEYSEAT WIPER |A reaming bit or hole opener that cuts the sides off the borehole where a |

| | | |keyseat is formed |

|BOREHOLE WALL |A curved wall formed by a drilling tool. |

|KEYSEAT |A section of a borehole wall forming a shoulder, causing drilling tools to|

| |be stuck. |

|SOLID COMPOUND |A compound in solid state possesses a definite shape and is hard to touch.|

| |It is composed of molecules with very low energy that stay in one place |

| |even though they vibrate. There is space between these molecules so a |

| |solid is not impenetrable |

| |BOREHOLE FILTER CAKE |A solid compound that is a plaster-like coating of the borehole resulting |

| | |from the solids in the drilling fluid adhering to and building up on the |

| | |wall of the hole. |

|SLEEVE |A hollow cylinder used to fit over shafts or into holes. |

| |WEAR BUSHING |A sleeve that is set in a hollow cylinder to protect the cylinder |

| | |wall against damage when a tool is run into the cylinder. |

| | |BORE PROTECTOR |A wear bushing that is run into and set in the wellhead or christmas |

| | | |tree to protect the inside wall against wear from the drill bit and |

| | | |drill pipe during drilling operations. |

| | | |BORE PROTECTOR 18 3/4 INS |A bore protector designed to fit in an 18 3/4 inch wellhead. |

| | |WEAR BUSHING 18 3/4 X 10 3/4 INS |A wear bushing having an internal diameter of 10 3/4 inch and |

| | | |designed to fit into an 18 3/4 inch cylinder. |

| | |WEAR BUSHING 18 3/4 X 13 3/8 INS |A wear bushing having an internal diameter of 13 3/8 inch and |

| | | |designed to fit into an 18 3/4 inch cylinder. |

|LOG |An artefact being a permanent report of performance or events. |

| |CALIPER LOG | |A log that shows the variations in the diameter of the uncased |

| | | |borehole. |

| |CASING COLLAR LOG | |A log that shows relative magnetic intensity used in cased borehole |

| | | |to identify the threaded joints or casing collars of successive |

| | | |joints of casing. Used for locating casing collars when perforating, |

| | | |setting a plug or other operations. |

| |DENSITY LOG | |A well log of induced radioactivity that shows the density of rocks |

| | | |downhole and the fluids they contain. |

| |DRILLING LOG | |A log kept by the driller showing various events during drilling. |

| |ELECTRIC LOG | |A log that is an electrical survey of the borehole, to measure |

| | | |resistivity in the rock strata. |

| |GAMMA RAY LOG | |A log that is the report of a gamma ray survey of the borehole. |

| |GAS LOG | |A log that is the report of gas in the drilling mud return. |

|TO OCCUR |To present itself, take place, or come to pass |

| |KEYSEATING | |An activity where a part of the drill string is wedged (and possibly |

| | | |stuck) in a section of crooked hole, particularly a dogleg. |

| |WALL STICKING | |A condition downhole when a section of the drill string becomes stuck|

| | | |or hung up in the deposit of filter cake on the wall of the borehole.|

4 Christmas trees

|CHRISTMAS TREE |An artefact that is an assembly of pipes and piping parts, with |

| |valves and associated control equipment that is connected to the top |

| |of a wellhead and is intended for control of fluid from a well. |

| |CHRISTMAS TREE 10K |A Christmas tree rated for a pressure of 10 000 PSI (69,0 MPa) |

| |CHRISTMAS TREE 15K |A Christmas tree rated for a pressure of 15 000 PSI (103,5 MPa) |

| |CHRISTMAS TREE 5K |A Christmas tree rated for a pressure of 5 000 PSI (34,5 MPa) |

| |HORIZONTAL CHRISTMAS TREE |A Christmas tree configured with the master valves and flow-control |

| | |equipment on a horizontal axis to minimize the assembly height. |

| | |SUBSEA HORIZONTAL CHRISTMAS TREE |A horizontal Christmas tree design for subsea applications. The |

| | | |valves can be both bolted on or built in. |

| | |SURFACE HORIZONTAL CHRISTMAS TREE |A horizontal Christmas tree design for surface (dry land) |

| | | |applications. The valves are normally bolted on. |

| |SUBSEA CHRISTMAS TREE |A christmas tree for use in a subsea environment. Will normally |

| | |comprise a hollow, pressure rated body with the valves either built |

| | |in or bolted on. |

| |SURFACE CHRISTMAS TREE |A Christmas tree for use on land. Will normally comprise a number of |

| | |assembled parts, e.g. casing spools, with the valves bolted onto the |

| | |outside. |

| |VERTICAL CHRISTMAS TREE |A Christmas tree configured with the master valves and flow-control |

| | |equipment on a vertical axis that is the main axis of the tree. |

| | |SUBSEA VERTICAL CHRISTMAS TREE |A vertical Christmas tree design for subsea applications. The valves |

| | | |are normally built-in as part of the tree. |

|CHRISTMAS TREE CAP |An artefact used to cap the top of the christmas tree, to prevent |

| |ingress of contaminants, such as seawater. |

| |EXTERNAL CHRISTMAS TREE CAP |A christmas tree cap designed to be locked to the outside of the |

| | |tree. |

| |INTERNAL CHRISTMAS TREE CAP |A christmas tree cap designed to be locked to the inside of the tree.|

|SUBSEA CHRISTMAS TREE RUNNING TOOL |An artefact that is designed to install a subsea christmas tree on a |

| |wellhead. |

|CHRISTMAS TREE ANNULUS WING BLOCK |An artefact that is a unit attached to a christmas tree and |

| |containing the annulus wing valve, the annulus vent valve and the |

| |crossover loop connection. |

|CHRISTMAS TREE PRODUCTION WING BLOCK |An artefact that is a unit attached to a christmas tree and |

| |containing the production wing valve, the cross-over valve and the |

| |pressure and temperature sensors. |

|CHRISTMAS TREE TEST STUMP |An artefact for supporting a subsea christmas tree during testing and|

| |transport. |

|CHRISTMAS TREE LIFTING TOOL |An artefact for lifting and handling a subsea christmas tree during |

| |transport and installation. |

|WELLHEAD HOUSING RUNNING TOOL |An artefact that is designed to install the wellhead housing and |

| |surface casing in a subsea well. |

|RADIAL PENETRATION ASSEMBLY |A device for passing lines or cables through a wall |

|PENETRATOR |A device for passing a line or cable through a wall |

| |ELECTRICAL PENETRATOR | |A penetrator for an electric line or cable |

| |HYDRAULICAL PENETRATOR | |A penetrator for hydraulic line |

| |OPTICAL PENETRATOR | |A penetrator for a fibre optic line |

5 Structures and templates, including pipelines.

|FRAME |An artefact which is an open case or structure made for admitting, |

| |enclosing, or supporting something. |

| |SUBSEA FLOWLINE CONNECTOR SUPPORT FRAME |A structural frame which receives and supports the flowline connector |

| | |and transfers flowline loads back into the wellhead or seabed anchored |

| | |structure. |

|FLOWLOOP |An artefact consisting of a short length of pipe, for connecting |

| |between two other (fixed) pipes. |

| |CROSSOVER FLOWLOOP |A flowloop intended for connecting the production and annulus outlets |

| | |on a christmas tree |

| |GAS INJECTION FLOWLOOP |A flowloop on a christmas tree for gas injection. |

| |PRODUCTION FLOWLOOP |An artefact consisting of a length of pipe extending from the |

| | |production outlet on a christmas tree to the wing hub. |

| |PIG LOOP |A flowloop with a U-shape for transporting pigs from one pipe to |

| | |another. |

| | |SUBSEA PIG LOOP |A pig loop connected to a subsea structure. |

|PIG LAUNCHER |A chamber connected to a pipeline intended for sending pigs into the |

| |pipeline. |

| |SUBSEA PIG LAUNCHER |A pig launcher located on the seabed at the end of a pipeline, usually |

| | |a pipeline end terminal. |

|PIG RECEIVER |A chamber connected to the end of a pipeline intended for receiving |

| |pigs. |

| |SUBSEA PIG RECEIVER |A pig receiver located on the seabed at the end of a pipeline, usually |

| | |a pipeline end terminal. |

|PIPELINE SECTION |A section of a pipeline. |

| |PIGGED PIPELINE SECTION |A pipeline section that is the length of a pig run |

| |PIPELINE SECTION BETWEEN REDUCERS |A pipeline section that is the length between reducers |

| |PIPELINE SECTION BETWEEN TEES |A pipeline section that is the length between tees |

| |PIPE SECTION |A pipeline section which is a contiguous length of the pipeline where |

| | |the pipe has a common specification and nominal size. |

| | |PIPE SECTION 10 NPS ID |A pipe section with a nominal inner diameter of 10 inches |

|PIPELINE COMPONENT |A device which can be installed in a pipeline |

|MANIFOLD |An artefact with several openings. |

| |PIPELINE MANIFOLD |A manifold that is an area where pipelines entering and leaving a |

| | |station converge and that contains all valves for controlling the |

| | |incoming and outgoing streams |

| | |SUBSEA MANIFOLD |A pipeline manifold located on the seabed for collecting and |

| | | |co-mingling fluids from several wells. |

| | |SUBSEA INJECTION MANIFOLD |A subsea manifold used for routing injection fluid to wells. |

| | |SUBSEA PRODUCTION MANIFOLD |A subsea manifold used for co-mingling and routing production fluid |

| | | |from wells to a flow line. |

|PIPING HUB |An artefact where one of the ends, namely the hub end, has the shape of|

| |a circular protrusion bulb shaped to allow a connection to be made |

| |using a matching pipe clamp and seal ring to prevent leakage. |

| |CHRISTMAS TREE WING HUB |A piping hub located on a christmas tree's production flowloop, for |

| | |connecting to a well jumper or flow control module. |

| |FLOWLINE INBOARD HUB |A piping hub for connecting a flowline to a subsea structure, such as a|

| | |manifold. |

| |MANIFOLD WING HUB |A piping hub for connecting a well jumper or flow control module to a |

| | |manifold. |

| |UMBILICAL INBOARD HUB |A piping hub intended for the connection of an umbilical to a subsea |

| | |structure, e.g. a manifold or PLET. |

|PIPING NETWORK SEGMENT |The piping limited by a Node and a Break, Node and Connector, two |

| |Nodes, two Breaks, two Connectors or a Break and a Connector. The last |

| |five providing there are no Breaks or Connectors in between. In the |

| |last three cases the Segment will coincide with a Piping Branch. |

| |SUBSEA MANIFOLD PIPING |A pipe network segment that is part of a manifold. |

| | |SUBSEA MANIFOLD HEADER |A subsea manifold piping for transporting fluids through the manifold |

| | | |from a well to (or from) a flowline or spool. |

|PIPING REDUCER |An artefact with different nominal pipe size at the two ends, intended |

| |to connect pipes or piping components. |

|PIPING TEE |An artefact with 3 piping ends in T-shape, including a branch at 90 |

| |degrees |

| |PIPING TEE HOT TAP |A piping tee where the branch is closed off but with means to reopen |

| | |branch bore. |

| |PIPING TEE REDUCING BRANCH |A reducing piping tee where the branch has a smaller nominal size than |

| | |both the header (run) ends, which have the same nominal size. |

|RISER |An artefact that is a vertical or near vertical pipe for the upward |

| |flow of liquid or gas. |

| |COMPLETION RISER |A riser that is designed to fit inside a BOP to allow installation of |

| | |well equipment, e.g. tubing hanger. |

| |MARINE RISER |A riser that is used in drilling or workover operations, as a guide for|

| | |the drill string and fluid return conduit. It is connected to the |

| | |subsea BOP. |

| |WORKOVER RISER |A riser that is used in workover operations, as a guide for wireline |

| | |tools. THE WOR is connected to the christmas tree and must be pressure |

| | |rated. |

|SERVICE LINE |A device which can carry services such as power, communications, |

| |control and material between two designated points. |

| |CHEMICAL FLUID LINE |A service line carrying chemical fluids. |

| | |METHANOL INJECTION LINE |A chemical injection line conveying methanol. |

| |HYDRAULIC FLUID LINE |A fluid conductor intended for transport of hydraulic pressure fluid |

| |SERVICE LINE 3 INS ID |A service line having a nominal internal diameter of three inches. |

| |SERVICE UMBILICAL |A service line with the lines embedded in a matrix and having a moulded|

| | |cap. |

| | |SUBSEA UMBILICAL |A service umbilical for use subsea or between a surface station (e.g. |

| | | |platform) and a subsea installation |

|UMBILICAL SECTION |A section of an umbilical. |

| |SUBSEA UMBILICAL SECTION | |A umbilical section that is located subsea |

| |UMBILICAL DYNAMIC SECTION | |A umbilical section that is dynamic, i.e. has freedom to sway |

| |UMBILICAL STATIC SECTION | |A umbilical section that is static |

|PIPING NETWORK TERMINATOR |A device that is a termination point of a fluid network. |

| |PIPELINE END TERMINAL |A piping network terminator in a subsea flowline. |

| | |RISER BASE |A pipeline end terminal that forms the termination of a subsea flowline|

| | | |where it is connected to a riser. |

| | | |GAS LIFT RISER BASE |A riser base with equipment for facilitating gas lift |

|SUBSEA FIXED STRUCTURE |A fixed structure located at the sea bottom and intended for supporting|

| |a subsea facility. All structure and equipment are below sea level. |

| |SUBSEA GUIDE BASE |A subsea fixed structure for supporting a wellhead |

| |SUBSEA TEMPLATE |A subsea fixed structure for supporting an assembly consisting of a |

| | |manifold and one or more wells |

|SUBSEA FLOWLINE |A pipeline located on the seabed which is intended to carry a |

| |hydrocarbon fluid between a subsea well and a subsea terminal, such as |

| |a riser base. |

| |SUBSEA GAS INJECTION FLOWLINE |A subsea flowline located on the seabed for conveying gas for injection|

| | |in a well |

| |SUBSEA PRODUCTION FLOWLINE |A subsea flowline located on the seabed for conveying hydrocarbon |

| | |fluids. |

| |SUBSEA WATER INJECTION FLOWLINE |A subsea flowline on the seabed for conveying water for injection in a |

| | |well |

|SUBSEA FLOWLINE JUMPER |An artefact for connecting a well or a manifold to a subsea flowline |

| |FLEXIBLE SUBSEA FLOWLINE JUMPER |A subsea flowline jumper that is flexible |

| |RIGID SUBSEA FLOWLINE JUMPER |A subsea flowline that is rigid |

| |SUBSEA FLOWLINE JUMPER 10 NPS |A subsea flowline jumper having a 10".bore |

| |SUBSEA FLOWLINE JUMPER 8 NPS |A subsea flowline jumper assembly having an 8" bore. |

|SUBSEA GUIDE FUNNEL |An artefact that has a tapered enlargement at the end of a guidance |

| |member to provide primary guidance over another guidance member. |

|SUBSEA GUIDE LINE |An artefact that is a rope or wire extending from the seafloor to the |

| |surface for the purpose of guiding equipment to a seafloor structure. |

|SUBSEA WELL JUMPER |An artefact for connecting a subsea well to a manifold. |

|SUBSEA MANIFOLD MODULE |An artefact located on the seabed that is a structural unit enclosing |

| |and supporting a subsea pipeline manifold. |

| |SUBSEA INJECTION MANIFOLD MODULE |A subsea manifold module used to distribute injection fluid from an |

| | |injection flowline to injection wells. |

| |SUBSEA PRODUCTION MANIFOLD MODULE |A subsea manifold module used to co-mingle production fluid from wells |

| | |to a flowline. |

|SUBSEA PIPING TEE |An artefact that is a T-connection of a subsea flowline and having |

| |associated equipment, such as valves and a hub |

| |SUBSEA PIPING TEE 10 X 8 |A subsea piping tee with an 10" main bore and 8" branch |

| |SUBSEA PIPING TEE HOT TAP |An artefact that is a T-connection of a subsea flowline and having |

| | |associated equipment, such as valves and a hub where the branch is |

| | |closed but prepared for hot-tapping |

|SUBSEA WELL JUMPER |An artefact for connecting a subsea well to a manifold. |

| |SUBSEA WELL JUMPER 6 NPS |A subsea well jumper with a 6".main flow passage |

|TERMINATION HEAD |An artefact that is attached to an end of a pipeline or umbilical and |

| |having means for handling and connection. |

| |MONOBORE FLOWLINE TERMINATION HEAD |A termination head for a flowline with one fluid passage. |

| |MULTIBORE FLOWLINE TERMINATION HEAD |A termination head for a flowline with more than one fluid passage. |

| |UMBILICAL TERMINATION HEAD |A termination head for an umbilical. |

|SUBSEA CHOKE MODULE |An artefact that is a choke valve housed in a retrievably module |

| |installed on a christmas tree. |

|SUBSEA FLOW CONTROL MODULE |An artefact that is installed between a christmas tree and a manifold. |

|INJECTION FLUID LINE |A fluid conductor intended for transport of injection fluid |

| |GAS INJECTION LINE |An injection fluid line conveying gas |

| |WATER INJECTION LINE |An injection fluid line conveying water |

|MECHANICAL CONNECTOR |An artefact which is a pipeline fitting used to create a rigid pressure|

| |containing joint in a pipeline or flowline. |

| |CLAMP CONNECTOR | |A mechanical connector which is used to make up a joint in a pipeline |

| | | |or flowline using a pipe clamp. |

| |COLLET CONNECTOR | |A mechanical connector which has fingers arranged around the |

| | | |circumference of one pipe end that are moved to grip around a second, |

| | | |normally hub, end. |

| |RING CONNECTOR | |A mechanical connector which has a ring arranged around the |

| | | |circumference of one pipe end that are moved to grip with external |

| | | |grooves on a second end. |

| |WELLHEAD CONNECTOR | |A mechanical connector that is design to attach equipment to the |

| | | |wellhead housing. |

|NOMINAL INSIDE DIAMETER |An inside diameter which is an expected (theoretical/as designed) |

| |inside diameter. |

6 Control system

|CONTROL SYSTEM |A system intended to control the operation of a machine, unit or process. |

| |WELL PRODUCTION CONTROL SYSTEM |A control system intended to control the production of hydrocarbons from wells.|

| | |SUBSEA PRODUCTION CONTROL SYSTEM |A well production control system intended to be installed in a subsea |

| | | |environment. |

|CONTROL MODULE |A process control unit where the control and process functions are housed in a |

| |special container. |

| |SUBSEA CONTROL MODULE | |A control module that is used to control a subsea production system. |

|ELECTRONIC MODULE | |A process control unit which is an assembly of electronic components housed in |

| | |a special container. |

| |SUBSEA ELECTRONIC MODULE | |An electronic module which is housed in a special container housing the |

| | | |operating system of the subsea control module. |

| |TOPSIDE ELECTRONIC MODULE | |An electronic module which is a part of subsea power, communication and control|

| | | |unit on a production platform. |

|ANODE |The anode function is to set up a current from an electrode, the anode that |

| |normally enters the medium of different conductivity. |

| |SACRIFICIAL ANODE |An anode usually based on aluminium or zinc used to protect carbon and |

| | |low-alloy steel equipment or structures against corrosion. |

|HYDRAULIC CONNECTOR |An artefact for releasably connecting hydraulic fluid lines, having means for |

| |closing the fluid path when the connector is released. |

|MULTIPLE QUICK CONNECTOR |A fluid connection enabling several connectors to be connected simultaneously. |

|MULTIPLE QUICK CONNECTOR PLATE |A plate to which is affixed mechanical connector enabling several connectors to|

| |be connected simultaneously when the plate is connected to a corresponding |

| |plate or SCM base connector plate. |

|DETECTOR |A device capable of detecting a state or a change in state, e.g. pressure or |

| |temperature, or detect the presence of a selected substance. |

| |EROSION DETECTOR |A sensor intended to detect erosion, e.g. caused by particles in a fluid. |

| |SAND DETECTOR |A detector intended to detect sand in a fluid. |

| | |ACOUSTIC SAND DETECTOR |A sand detector using acoustic signalling. |

| |LEAK DETECTOR |A detector intended to detect a leak. |

| | |HYDROCARBON LEAK DETECTOR |A leak detector intended to detect hydrocarbons. |

|METER |An instrument intended to measure a physical quantity (IEV, IEC-770-1) and to |

| |indicate and/or to transmit a signal which represents a measured variable. It |

| |typically consists of items which have a role as a primary element and a |

| |secondary element respectively. |

| |MULTIPHASE METER |A flow meter for the metering of a mixture of two or more fluid phases. |

| |WATER FRACTION METER |A meter designed to measure the water fraction in a flow. |

| |WET GAS METER |A meter which is a combination of a mass flow meter and a water fraction meter |

|FLUID |A compound |

| |DIELECTRIC FLUID |A fluid that is a non-conductor of electricity. |

| |HYDRAULIC FLUID |A fluid which is used in a hydraulic system to transmit energy from a source to|

| | |a machine, e.g. an actuator. |

| | |OIL BASED HYDRAULIC FLUID |A hydraulic fluid using oil as the base. |

| | |WATER BASED HYDRAULIC FLUID |A hydraulic fluid using water as the base. |

| | | |CASTROL TRANSAQUA HT |A water based hydraulic fluid manufactured by Castrol. |

|SIGNAL | |

| |COMMUNICATION STATUS SIGNAL |A signal representing the status of the communication between the subsea |

| | |electronic module and the master control station. |

| | |SUBSEA ELECTRONIC MODULE SELF DIAGNOSTIC PARAMETER |(A) signal(-s) from subsea electronic module representing the status of the |

| | |SIGNALS |SEM. |

|VOLTAGE |. |

| |SUBSEA ELECTRONIC MODULE INTERNAL VOLTAGE |A voltage that is the internal voltage in the subsea electronic module. |

|PRESSURE | |

| |DESIGN PRESSURE |A pressure which an object is designed to withstand. |

| | |HYDRAULIC SYSTEM DESIGN PRESSURE |A design pressure of the working fluid in a hydraulic system. |

| | | |SUBSEA CONTROL SYSTEM HP DESIGN PRESSURE |A hydraulic system design pressure that is the design pressure of the High |

| | | | |Pressure (HP) part of a subsea production control system. |

| | | |SUBSEA CONTROL SYSTEM LP DESIGN PRESSURE |A hydraulic system design pressure that is the design pressure of the Low |

| | | | |Pressure (LP) part of a subsea production control system. |

| |OPERATING PRESSURE |A pressure under which an object is expected to operate |

| | |HYDRAULIC SYSTEM OPERATING PRESSURE |An operating pressure of the working fluid in a hydraulic system. |

| | | |SUBSEA CONTROL SYSTEM HP OPERATING PRESSURE |A hydraulic system operating pressure that is the working pressure of the High |

| | | | |Pressure (HP) part of a subsea production control system. |

| | | |SUBSEA CONTROL SYSTEM LP OPERATING PRESSURE |A hydraulic system operating pressure that is the working pressure of the Low |

| | | | |Pressure (LP) part of a subsea production control system. |

| | |NORMAL OPERATING PRESSURE |An operating pressure that is a pressure under which an object is expected to |

| | | |operate. |

| | |RATED OPERATING PRESSURE |An operating pressure which is the rated (e.g. design) pressure. |

| | | |HYDRAULIC LINE RATED OPERATING PRESSURE |A rated operating pressure which is the rated (e.g. design) pressure of a |

| | | | |hydraulic fluid in a hydraulic fluid line. |

| | |UPPER LIMIT OPERATING PRESSURE |An operating pressure that is the highest pressure under which an object is |

| | | |expected to operate. |

| | | |UPPER LIMIT HYDRAULIC SYSTEM OPERATING PRESSURE|An upper limit operating pressure of the working fluid in a hydraulic system. |

| | | |UPPER LIMIT SUBSEA PRODUCTION SYSTEM HP |An upper limit hydraulic system operating pressure that is the maximum working |

| | | |OPERATING PRESSURE |pressure of the High Pressure (HP) part of a subsea production control system. |

| | | |UPPER LIMIT SUBSEA PRODUCTION SYSTEM LP |An upper limit hydraulic system operating pressure that is the maximum working |

| | | |OPERATING PRESSURE |pressure of the Low Pressure (LP) part of a subsea production control system. |

| |SUPPLY PRESSURE |A pressure which is a pressure of a fluid medium supplied at an inlet. |

| | |HYDRAULIC SYSTEM SUPPLY PRESSURE |A supply pressure of the working fluid in a hydraulic system. |

| | | |SUBSEA CONTROL SYSTEM HP SUPPLY PRESSURE |A hydraulic system supply pressure that is the pressure supplied to the High |

| | | | |Pressure (HP) inlet port of a subsea production control system. |

| | | |SUBSEA CONTROL SYSTEM LP SUPPLY PRESSURE |A hydraulic system supply pressure that is the pressure supplied to the Low |

| | | | |Pressure (LP) inlet port of a subsea production control system. |

| |TEST PRESSURE |A pressure to which an object should be subjected to test for leakage and |

| | |structural integrity. |

| | |HYDRAULIC SYSTEM TEST PRESSURE |A test pressure that is the pressure to which the hydraulic system is tested. |

| | | |SUBSEA CONTROL SYSTEM HP TEST PRESSURE |A hydraulic system test pressure for testing the High Pressure (HP) part of a |

| | | | |subsea production control system. |

| | | |SUBSEA CONTROL SYSTEM LP TEST PRESSURE |A hydraulic system test pressure for testing the Low Pressure (LP) part of a |

| | | | |subsea production control system. |

| |RETURN PRESSURE |A pressure which is a pressure of a fluid medium in a return line. |

| | |SUBSEA CONTROL SYSTEM RETURN PRESSURE |A return pressure that is the return pressure of the working fluid in a subsea |

| | | |production control system. |

| | |UPPER LIMIT RETURN PRESSURE |A return pressure which is the maximum allowed in a return line. |

| | | |UPPER LIMIT SUBSEA PRODUCTION SYSTEM RETURN |A return pressure which is the maximum allowed in the return line of a subsea |

| | | |PRESSURE |production system. |

| |UPPER LIMIT PRESSURE |A pressure which is the highest allowable pressure. |

7 Valves, actuators and valve operation

|VALVE |A device used to control, i.e. permit, obstruct, regulate or divert a fluid |

| |stream. |

| |BI-DIRECTIONAL VALVE |A valve designed to seal against flow or pressure from either direction. |

| |CHECK VALVE |A valve that permits fluid to flow in one direction only. |

| |CHEMICAL INJECTION VALVE |A valve which is used to control injection of chemicals into the well or |

| | |flowline |

| | |CHEMICAL INJECTION THROTTLE VALVE |A chemical injection valve of the throttle type used to control the rate and|

| | | |amount of chemical injection fluids. |

| | |CORROSION INHIBITOR VALVE |A chemical injection valve which is used to control injection of a corrosion|

| | | |inhibitor. |

| | |METHANOL INJECTION VALVE |A chemical injection valve which is used to control injection of Methanol |

| | | |into the well production fluid stream. |

| | |SCALE INHIBITOR VALVE |A chemical injection valve which is used to control injection of a scale |

| | | |inhibitor |

| | | |SCALE INHIBITOR METERING VALVE |A scale inhibitor valve that includes a meter for controlling the rate of |

| | | | |injection fluid. |

| | |SCALE SQUEEZE VALVE |A chemical injection valve which is used to control the amount of scale |

| | | |inhibiting fluid. |

| |CHOKE VALVE |A valve which obstruct the fluid passing inside and has the ability to |

| | |reduce the pressure from the inlet port to the outlet port. |

| | |SUBSEA CHOKE VALVE |A choke valve specifically intended by design for use in a subsea service. |

| | |SUBSEA GAS LIFT CHOKE VALVE |A subsea choke valve specifically intended to be used in the gas lift line |

| | | |to regulate the pressure of the gas used for gas lift. |

| | |SUBSEA INJECTION CHOKE VALVE |A subsea choke valve specifically intended to be used in the injection line |

| | | |to regulate the pressure of the fluid injected into a well. |

| | |SUBSEA PRODUCTION CHOKE VALVE |A subsea choke valve specifically intended to be used in the production |

| | | |line. |

| |CHRISTMAS TREE VALVE |A valve which is located on a christmas tree, for injection or fluid |

| | |control. |

| | |ANNULUS CIRCULATION VALVE |A valve which is located in the annulus outlet of the christmas tree for use|

| | | |when circulating in the well |

| | |ANNULUS MASTER VALVE |A valve which is located in the annulus outlet of the christmas tree being |

| | | |the main annulus barrier valve |

| | |ANNULUS VENT VALVE |A valve which is located in the annulus outlet of the christmas tree for |

| | | |venting overpressure from the well annulus. |

| | |ANNULUS WING VALVE |A valve which is located in the annulus outlet of the christmas tree being |

| | | |the secondary annulus barrier valve |

| | |CHEMICAL INJECTION VALVE |A valve which is used to control injection of chemicals into the well or |

| | | |flowline |

| | |CROSSOVER VALVE |A valve which is located in the crossover loop |

| | |PRODUCTION MASTER VALVE |A valve which is located in the production outlet of the christmas tree |

| | | |being the main production barrier valve |

| | |PRODUCTION WING VALVE |A valve which is located in the production outlet of the christmas tree |

| | | |being the secondary production barrier valve |

| |CONTROL VALVE |A valve which is opened or closed in order to control the flow of liquid or |

| | |pressure in a fluid system. |

| | |BI-DIRECTIONAL CONTROL VALVE |A control valve that operates in both direction. |

| |BI-DIRECTIONAL VALVE |A valve designed to seal against flow or pressure from either direction. |

| | |CHANGE-OVER CONTROL VALVE |A bi-directional control valve with two inlet ports and one outlet port, |

| | | |enabling changing between dual supplies. |

| | |CHEMICAL INJECTION DOSING VALVE |A control valve which is used to control the rate and amount of the |

| | | |chemicals injection into the well or flowline |

| | |DIRECTIONAL CONTROL VALVE |A control valve that operates in one direction, having a reset function. |

| | |3 WAY CONTROL VALVE |A control valve which has three different paths through which the flow can |

| | | |pass. |

| |DOWNHOLE SAFETY VALVE |A valve insertable into the well tubing to act as a well barrier |

| | |SURFACE CONTROLLED SUBSURFACE SAFETY VALVE |A downhole safety valve located in a well and operated from the surface |

| | | |that, when it is activated, is designed to prevent uncontrolled flow up the |

| | | |well. |

| |FAIL CLOSE VALVE |A valve which intended to automatically to return to closed |

| | |position/condition in the event of a failure. |

| |FAIL OPEN VALVE |A valve which intended to automatically to return to open position/condition|

| | |in the event of a failure. |

| |GATE VALVE |A valve where the closure member is a gate or disk with a linear motion |

| | |parallel, or nearly parallel, to the plane of flat seats, which are |

| | |transverse to the direction of flow. |

| | |SPLIT GATE VALVE |A gate valve where the gate or disk is made of two or more pieces which are |

| | | |capable of being energized to seal both upstream and downstream at the same |

| | | |time. |

| |GLOBE VALVE |A valve where the closure member is a disk or piston operating with linear |

| | |motion normal to the flat or shaped seat. |

| | |NEEDLE VALVE |A globe valve with a closure member with the shape of a conical plug |

| | | |(needle) which closes into a small seat. Used for flow metering and damping |

| | | |pressure fluctuations on instruments, e.g. pressure gauge. |

| |ISOLATION VALVE |A valve used for isolating all or part of a pipeline system. |

| | |ISOLATION VALVE 10 NPS |An isolation valve with a 10 inch nominal opening |

| | |ISOLATION VALVE 12 NPS |An isolation valve with a 12 inch nominal opening |

| | |ISOLATION VALVE 16 NPS |An isolation valve with a 16 inch nominal opening |

| | |ISOLATION VALVE 8 NPS |An isolation valve with a 8 inch nominal opening |

| |PILOT VALVE |A valve used in fluid systems that controls the supply of driving fluid to |

| | |an actuator (i.e. of another valve). |

| |QUICK DUMP VALVE |A valve used for quick bleed down of fluid from a hydraulic fluid line or |

| | |hydraulic actuator. |

| |SOLENOID VALVE |A valve with linear action which is fitted with a solenoid for quick |

| | |operation |

| | |DIRECTIONAL SOLENOID VALVE |A solenoid valve that operates in only one direction. |

| |ROTARY VALVE |A valve where the closure member has a rotating action, where the axis of |

| | |rotation is usually normal to the flow. |

| | |BALL VALVE |A valve which has a spherical core or ball closure member. |

| |SUBSEA MANIFOLD VALVE |A valve which is located in the subsea manifold piping system, for isolation|

| | |or fluid control. |

| | |SUBSEA MANIFOLD VALVE 12 INS |A subsea manifold valve with 12 inch orifice size. |

| | |SUBSEA MANIFOLD VALVE 2 1/16 INS |A subsea manifold valve with 2 1/16 inch orifice size. |

| | |SUBSEA MANIFOLD VALVE 5 1/8 INS |A subsea manifold valve with 5 1/8 inch orifice size. |

| |UNI-DIRECTIONAL VALVE |A valve designed to seal in one flow direction. |

| |VALVE NORMALLY CLOSED |A valve which is normally in a closed position. |

| |VALVE REMAINS IN POSITION |A valve which remains in unchanged position in case of failure. |

| |VALVE CLOSED |A valve that is in a closed position. |

| |VALVE OPEN |A valve that is in a fully open position. |

|OPERATED VALVE |A valve which includes an external means of operation. (e.g. handwheel |

| |/ lever / actuator.) |

| |ACTUATED VALVE |An operated valve where the operator is an actuator. |

| | |ELECTRICALLY ACTUATED VALVE |An actuated valve with an electric (motor) actuator. |

| | |HYDRAULICALLY ACTUATED VALVE |A valve operated by a hydraulic actuator. |

| | |ACTUATED BALL VALVE |A ball valve operated by an actuator. |

| | | |ELECTRICALLY ACTUATED BALL VALVE |A ball valve operated by an electric actuator. |

| | | |HYDRAULICALLY ACTUATED BALL VALVE |A ball valve with a hydraulic actuator. |

| | |ACTUATED GATE VALVE |A gate valve operated by an actuator. |

| | | |ELECTRICALLY ACTUATED GATE VALVE |A gate valve operated by an electric actuator. |

| | | |HYDRAULICALLY ACTUATED GATE VALVE |A gate valve with a hydraulic actuator. |

| | |ACTUATED VALVE WITH MANUAL OVERRIDE |An actuated valve having means for overriding the actuator and |

| | | |operating the valve manually. |

| |PILOT OPERATED VALVE |An operated valve intended to be opened and closed using another |

| | |(pilot) valve. |

| | |PILOT OPERATED CONTROL VALVE |A pilot operated valve with a shear seal type slide valve as the main |

| | | |stage and a solenoid valve as the pilot stage. |

| | | |PILOT OPERATED DIRECTIONAL CONTROL VALVE |A pilot operated control valve that has a reset spring for returning |

| | | | |the control valve to its closed position if the supply pressure drops |

| | | | |below the reset pressure. |

| | | |PILOT OPERATED ENERGIZED DIRECTIONAL CONTROL VALVE |A pilot operated control valve using a directional solenoid for |

| | | | |returning the control valve to its closed position if the solenoid |

| | | | |power is switched off or the pilot supply pressure drops below the |

| | | | |minimum required pilot pressure. |

| |ROV OPERATED VALVE |An operated valve having means enabling the operation of the valve |

| | |using a remote operated torque tool. |

| | |ROV OPERATED BALL VALVE |An ROV operated valve that is a ball valve. |

| | |ROV OPERATED CHEMICAL DOSING VALVE |An ROV operated valve intended for controlling the dosage of chemicals |

| | | |into a pipeline, e.g. manifold header. |

| | |ROV OPERATED GATE VALVE |An ROV operated valve that is a gate valve. |

|VALVE ACTUATOR |An actuator intended to change and/or maintain the position of the |

| |closing member of a valve. |

| |ELECTRIC VALVE ACTUATOR | |A valve actuator intended to be driven by an electric motor. |

| |HYDRAULIC VALVE ACTUATOR | |A valve actuator intended to be driven by a hydraulic (fluid) motor. |

| |ELECTRO HYDRAULIC VALVE ACTUATOR | |A hydraulic valve actuator having a fluid pump driven by an electric |

| | | |motor. |

|VALVE CLOSING ACTUATOR |An actuator which only closes a valve. |

|VALVE OPENING ACTUATOR |An actuator which only opens a valve. |

|PANEL |A device which contains instruments, controlling and signalling devices|

| |arranged in a suitable manner. |

| |SUBSEA ROV PANEL | |A panel attached to a subsea structure, e.g. a christmas tree, allowing|

| | | |an ROV to manually operate valves. |

|POSITION INDICATOR |An indicator intended to visually indicate a position |

| |VALVE POSITION INDICATOR | |An indicator intended to display the position of a valve element. |

|POSITION DETECTOR |A detector intended to detect a position. |

| |CHOKE VALVE POSITION DETECTOR |A position detector intended to measure a position of a choke valve. |

|INTERFACE |the capability of making independent and/or unrelated systems to meet |

| |and act on or to communicate with each other |

| |API 17D INTERFACE |An interface according to the API 17D standard enabling torque tools to|

| | |mechanically operate a valve or connector. |

|HYDRAULIC VALVE ACTUATOR VOLUME DISPLACEMENT |The volume of hydraulic fluid necessary for one full stroke of the |

| |actuator |

|ACTUATOR CONNECTION |A reference to a standard actuator connection. |

|APPLICABLE VALVE IDENTIFICATION CODE |A reference to a name of a valve that may be operated by a particular |

| |actuator. |

|HYDRAULIC VALVE ACTUATOR TEMPERATURE RATING |A reference to a hydraulic actuator that is classified according to |

| |standard temperature ratings, i.e. the range of temperatures allowable |

| |for an actuator. |

|MATERIAL CLASSED VALVE |A reference to a valve classified according to a standard material |

| |class. |

|NOMINAL ACTUATOR CONNECTION SIZE |A reference to a standard actuator connection size. |

|NOMINAL VALVE BORE SIZE |A reference to a valve described with a nominal valve bore size. |

|NOMINAL VALVE INLET CONNECTION SIZE |A reference to a standard valve connection size. |

|NOMINAL VALVE OUTLET CONNECTION SIZE |A reference to a standard valve connection size. |

|SERVICE RATED VALVE |A reference to a valve classified according to a standard service class.|

|VALVE INLET CONNECTION |A reference to a standard valve connection. |

|VALVE OUTLET CONNECTION |A reference to a standard valve connection. |

|VALVE TEMPERATURE RATING |A reference to a valve that is classified according to standard |

| |temperature ratings, i.e. the range of temperatures allowable for a |

| |valve. |

|TORQUE |The turning moment exerted by a tangential force acting at a distance |

| |from the axis of a rotation |

| |BREAKOUT TORQUE |A torque which is the force that must be applied to a rod, e.g. a valve|

| | |spindle, before it starts turning. |

| | |UPPER LIMIT BREAKOUT TORQUE |A breakout torque which is the maximum necessary to start turning a |

| | | |valve spindle. |

| | |UPPER LIMIT BREAKOUT TORQUE AT BALANCED PRESSURE |A maximum necessary breakout torque when the line pressure is equal at |

| | | |both sides of the valve. |

| | |UPPER LIMIT BREAKOUT TORQUE AT MAX DIFFERENTIAL PRESSURE |An upper limit breakout torque when the line differential pressure is |

| | | |the maximum across the valve. |

| | |UPPER LIMIT CLOSING BREAKOUT TORQUE |A maximum necessary breakout torque when closing a valve. |

| |UPPER LIMIT TORQUE |A torque which is the highest torque which an object can create, |

| | |transmit or tolerate. |

| | |UPPER LIMIT BREAKOUT TORQUE |A breakout torque which is the maximum necessary to start turning a |

| | | |valve spindle. |

| | |UPPER LIMIT ROV TORQUE TOOL SETTING |An upper limit torque which is a setting of an ROV torque tool. |

| | |REQUIRED ROV TORQUE TOOL SETTING |A required torque which is a setting of an ROV torque tool. |

| | |UPPER LIMIT REQUIRED TORQUE TO CLOSE VALVE |A required upper limit torque that is the maximum required torque to |

| | | |close a valve against the pressure in the valve bore. |

| | |UPPER LIMIT REQUIRED VALVE ACTUATOR TORQUE |An upper limit torque which is the largest (or worst case) torque that |

| | | |is required to operate the valve. |

| | |UPPER LIMIT VALVE ACTUATOR OVERRIDE TORQUE |A torque that is the upper limit torque to be applied for overriding |

| | | |the valve actuator and operate the valve. |

| |NORMAL OPERATING TORQUE |A torque that is the torque used under normal operating conditions. |

| | |NORMAL OPERATING TORQUE AT BALANCED PRESSURE |A normal operating torque at balanced pressure conditions. |

| | |NORMAL OPERATING TORQUE AT MAXIMUM DIFFERENTIAL PRESSURE |A normal operating torque at maximum differential pressure conditions. |

| |VALVE ACTUATOR OVERRIDE TORQUE REQUIRED |A torque that is required to override the valve actuator and open or |

| | |close the valve. |

|FORCE | |

| |UPPER LIMIT VALVE ACTUATOR OVERRIDE FORCE |A force that is the upper limit force to be applied for overriding the |

| | |valve actuator and operate the valve. |

| |VALVE ACTUATOR OVERRIDE FORCE REQUIRED |A force that is required to override the valve actuator and open or |

| | |close the valve. |

|COUNT | |

| |NUMBER OF TURNS |The number of 360 degree rotations. |

| | |NUMBER OF ROV SHAFT TURNS |The number turns to open or close an ROV-operated valve, as counted on |

| | | |the ROV shaft. |

| | |NUMBER OF TURNS TO CLOSE |The number turns necessary to close a valve using a torque tool or |

| | | |handwheel. |

| | |NUMBER OF TURNS TO OPEN |The number turns necessary to open a valve using a torque tool or |

| | | |handwheel. |

| |CHOKE VALVE CLOSING COMMAND |A command from a master control station (subsea control unit) to a |

| | |subsea control module intended to decrease actual choke valve opening. |

| |CHOKE VALVE OPENING COMMAND |A command from a master control station (subsea control unit) to a |

| | |subsea control module intended to increase actual choke valve opening. |

| |CONTROL VALVE OPENING COMMAND |A command from a master control station (subsea control unit) to a |

| | |subsea control module intended to initiate opening of a control valve |

| | |and keep it in open position. |

|STRAIGHT LINEAR DISTANCE |A distance which is the distance between two points in space measured |

| |along a straight line. |

| |VALVE OPENING DISTANCE |A distance which is the distance of travel for a valve regulation |

| | |mechanism. This distance can then be converted to a corresponding |

| | |opening percentage or opening area. |

| | |CHOKE VALVE OPENING DISTANCE |A valve opening distance which is the distance a choke valve stem has |

| | | |travelled from its zero position along its regulation path towards |

| | | |closing point. This distance will then correspond to an opening |

| | | |percentage or opening area. |

| |VALVE STEM TRAVEL |A straight linear distance which is the length of travel of a valve |

| | |stem from fully open to fully closed position of the valve. |

| | |CHOKE VALVE STEM TRAVEL |A valve stem travel length for a choke valve |

| | | |CHOKE VALVE STEM TRAVEL AVERAGED |A choke valve stem travel averaged over a time period |

| | | | |CHOKE VALVE STEM TRAVEL AVERAGED - MILLIMETER |A straight linear distance which is the length of stem travel |

| | | | | |corresponding to an opening flow area of a choke valve measured in |

| | | | | |millimetre. |

| | | |MEASURED CHOKE VALVE STEM TRAVEL |A length which is the measured length of choke valve stem travel. |

| | |VALVE STEM TRAVEL AVERAGED |A valve stem travel length for a choke valve, averaged over a period of|

| | | |time. |

| | |PLANNED UPPER LIMIT CHOKE VALVE OPENING DISTANCE |A choke valve stem travel length that is the planned opening length. |

| | | |PLANNED UPPER LIMIT CHOKE VALVE OPENING DISTANCE - |The planned maximum choke valve stem travel length measured in |

| | | |MILLIMETER |millimetre. |

| | |UPPER LIMIT CHOKE VALVE OPENING DISTANCE |The maximum possible choke valve stem travel length |

|VALVE STEM LENGTH |A length of a valve stem |

| | |

|VALVE OPENING TIME |A period of time which is the time it takes for a valve to change from |

| |fully closed to fully open position. |

| | |

| |VALVE OPENING AREA |An area which is the area defined as the cross section of the flow area|

| | |through the valve at a specific position of the valve regulation |

| | |mechanism. |

| | |CHOKE VALVE OPENING AREA |An area which is the area defined as the cross section of the flow area|

| | | |for a given opening between the stem and seat of a choke valve. |

| | | |ACTUAL CHOKE VALVE OPENING AREA |A valve opening area which is the actual opening area of a choke valve.|

| | | |CHOKE VALVE OPENING AREA AVERAGED |An average area of a choke valve opening. |

| | | |MEASURED CHOKE VALVE OPENING AREA |A valve opening area which is the measured opening area of a choke |

| | | | |valve. |

| | | |PLANNED LOWER LIMIT CHOKE VALVE OPENING AREA |A choke valve opening area which is the planned smallest opening area. |

| | | |PLANNED UPPER LIMIT CHOKE VALVE OPENING AREA |A choke valve opening area which is the planned largest opening area. |

| | |

|DIRECTION |A line or course on which something is moving or is aimed to move or |

| |along which something is pointing or facing. |

| |VALVE OPENING DIRECTION |The direction a tool must be rotated to open a valve. |

8 Other equipment terms

|STRAIGHT LINEAR DISTANCE |A distance which is the distance between two points in space measured |

| |along a straight line. |

| |DEPTH | |

| | |WATER DEPTH |A depth which is the depth from sea level to the seabed. |

| |OVERALL HEIGHT |A straight linear distance which is the face to face distance of a cuboid |

| | |circumscribing an object measured parallel to the vertical axis of an |

| | |object. |

| | |CATALOGUE DATA OVERALL HEIGHT |An overall height that is according to a product catalogue. |

| |OVERALL LENGTH |A straight linear distance which is the face to face distance of a cuboid |

| | |circumscribing an object measured parallel to the longitudinal axis of an |

| | |object. |

| | |CATALOGUE DATA OVERALL LENGTH |An overall length that is according to a product catalogue. |

| |OVERALL WIDTH |A straight linear distance which is the face to face distance of a cuboid |

| | |circumscribing an object measured parallel to the transverse axis of an |

| | |object. |

| | |CATALOGUE DATA OVERALL WIDTH |An overall width that is according to a product catalogue. |

|WEIGHT |The weight of a body in a specific reference system is the force which, when |

| |applied to the body, would give it an acceleration equal to free fall in that |

| |reference system |

| |DRY WEIGHT |A weight of an object excluding any operating or process fluids. |

| | |CATALOGUE DATA DRY WEIGHT |A dry weight that is according to a product catalogue. |

| | |WEIGHED DRY WEIGHT |A dry weight which is weighed. |

2 Production data

The terms in this section has mainly been derived from PROSTY production tables.

1 Flow rate, contents and fraction terms.

|FLOW RATE |A flow of substance pr unit time. |

| |AVERAGE FLOW RATE |A flow rate which is averaged. |

| |VOLUME FLOW RATE |A flow rate which is the volume of matter which crosses a given surface|

| | |divided by time. (instantaneous rate of volume flow due to a sound |

| | |wave, ISO 31-7:1992(E)) |

| | |AVERAGE VOLUME FLOW RATE |A volume flow rate which is the quotient obtained by dividing the total|

| | | |sum of a set of volume flow rate measurements by the total number of |

| | | |measurements. |

| | |GAS VOLUME FLOW RATE |A volume flow rate of gas. |

| | | |AVERAGE GAS VOLUME FLOW RATE |An average volume flow rate of gas. |

| | |HC-CONDENSATE VOLUME FLOW RATE |A liquid volume flow rate which is the expected hc-condensate flowrate.|

| | | |AVERAGE HC-CONDENSATE VOLUME FLOW RATE |An average volume flow rate of hc-condensate. |

| | |OIL VOLUME FLOW RATE |A volume flow rate of gas. |

| | | |AVERAGE OIL VOLUME FLOW RATE |An average volume flow rate of oil. |

| |AVERAGE VOLUME FLOW RATE |A volume flow rate which is the quotient obtained by dividing the total|

| | |sum of a set of volume flow rate measurements by the total number of |

| | |measurements. |

| | |AVERAGE GAS VOLUME FLOW RATE |An average volume flow rate of gas. |

| | |AVERAGE HC-CONDENSATE VOLUME FLOW RATE |An average volume flow rate of hc-condensate. |

| | |AVERAGE OIL VOLUME FLOW RATE |An average volume flow rate of oil. |

| |

|RATIO |A measure which is the relation between two similar magnitudes in |

| |respect to the number of times the first contains the second, |

| |integrally or fractionally. |

| |GAS-OIL RATIO AT T AND P |A ratio which is the ratio of dissolved gas compared to an amount of |

| | |oil at a given temperature and pressure. |

| |SAND CONTENT RATIO |A ratio representing the amount of sand in a fluid. |

| | |SAND CONTENT RATIO AVERAGED |A sand content ratio that is averaged |

| |VOLUME FRACTION |The ratio of the volume occupied by a component to the total volume of |

| | |the system. |

| | |VOLUME FRACTION OF BASIC SEDIMENTS AND WATER IN OIL |A volume fraction of basic sediments and water in an analysed oil |

| | | |sample. |

| | |VOLUME FRACTION OF BASIC SEDIMENTS IN OIL |A volume fraction of basic sediments in an analysed oil sample. |

| | |VOLUME FRACTION OF GAS IN FLUID STREAM |A volume fraction of gas in fluid stream. |

| | |VOLUME FRACTION OF GAS IN WELL ZONE |A volume fraction which is the ratio of gas compared to the volume of |

| | | |total liquids in a producing zone |

| | |VOLUME FRACTION OF HC-CONDENSATE IN WELL ZONE |A volume fraction which is the ratio of hc-condensate compared to the |

| | | |volume of total liquids in a producing zone |

| | |VOLUME FRACTION OF OIL IN FLUID STREAM |A volume fraction of oil in fluid stream. |

| | |VOLUME FRACTION OF OIL IN WELL ZONE |A volume fraction which is the ratio of oil compared to the volume of |

| | | |total liquids in a producing zone |

| | |VOLUME FRACTION OF PRODUCED WATER FROM TOTAL LIQUID |A volume fraction which is the ratio of water produced compared to the |

| | | |volume of total liquids produced. |

| | |VOLUME FRACTION OF WATER IN FLUID STREAM |A volume fraction of water in fluid stream. |

| | |VOLUME FRACTION OF WATER IN OIL |A volume fraction of water in an analysed oil sample. |

| | |VOLUME FRACTION OF WATER IN WELL ZONE |A volume fraction which is the ratio of water compared to the volume of|

| | | |total liquids in a producing zone |

| | |CONCENTRATION |A ratio (often given in percent) of one type of substance in relation |

| | | |to a different type of substance in the same mixture. |

| | | |CONCENTRATION MASS PER VOLUME |A concentration given as mass per volume. |

| | | |CONCENTRATION OF SALT IN OIL |A concentration mass per volume of salt in oil. |

| |PERCENTAGE |A ratio that is quantity or amount reckoned as so much in the hundred, |

| | |i.e. as so many hundredth parts of another, especially of the whole of |

| | |which it is a part. |

| | |VOLUME PERCENTAGE |A percentage of the volume occupied by a component to the total volume |

| | | |of the system. |

| | | |VOLUME PERCENTAGE OF BASIC SEDIMENTS AND WATER IN OIL |A volume percentage of basic sediments and water in an analysed oil |

| | | | |sample. |

| | | |VOLUME PERCENTAGE OF BASIC SEDIMENTS IN OIL |A volume percentage of basic sediments in an analysed oil sample. |

| | | |VOLUME PERCENTAGE OF WATER IN OIL |A volume percentage of water in an analysed oil sample. |

3 Production volume terms

|GAS VOLUME |A volume of gas obeying the physical law of gases. |

| |GAS LIFT VOLUME |A volume of gas use for gas lifting. |

| | |GAS LIFT VOLUME AVERAGED |A lift gas volume averaged over a period of time. |

| | | |LIFT GAS VOLUME AVERAGED - KSM3 |An average gas lift volume measured in thousand standard cubic metre. |

| | | |LIFT GAS VOLUME AVERAGED – MMSCF |An average gas lift volume measured in million standard cubic feet. |

| | | |LIFT GAS VOLUME AVERAGED - SM3 |An average gas lift volume measured in standard cubic metre. |

| | |LOWER LIMIT LIFT GAS VOLUME |A lift gas volume that represents a minimum amount. |

| | |UPPER LIMIT LIFT GAS VOLUME |A lift gas volume that represents a maximum amount. |

| |PRODUCED GAS VOLUME |A gas volume which is the volume of gas produced. |

| | |ALLOCATED PRODUCED GAS VOLUME |A produced gas volume which is the assumed gas volume produced from a |

| | | |well over a specified period of time. |

| | | |ALLOCATED PRODUCED GAS VOLUME - KSM3 |An allocated produced gas volume measured in thousand standard cubic |

| | | | |metre. |

| | | |ALLOCATED PRODUCED GAS VOLUME - MMSCF |An allocated produced gas volume measured in million standard cubic |

| | | | |feet. |

| | | |ALLOCATED PRODUCED GAS VOLUME - SM3 |An allocated produced gas volume measured in standard cubic metre. |

| | | | |ALLOCATED NET PRODUCED GAS VOLUME |A net produced gas volume which is the assumed net gas volume produced |

| | | | | |from a well over a specified period of time. |

| | |NET PRODUCED GAS VOLUME |A produced gas volume which is the net volume of gas produced from a |

| | | |well. |

| | |PLANNED PRODUCED GAS VOLUME |A produced gas volume which is the planned gas volume produced from a |

| | | |well over a specified period of time. |

| | | |PLANNED PRODUCED GAS VOLUME - KSM3 |A planned gas volume produced from a well over a specified period of |

| | | | |time measured in thousand standard cubic metre. |

| | | |PLANNED PRODUCED GAS VOLUME - MMSCF |A planned gas volume produced from a well over a specified period of |

| | | | |time measured in million cubic feet |

| | | |PLANNED PRODUCED GAS VOLUME - SM3 |A planned gas volume produced from a well over a specified period of |

| | | | |time measured in standard cubic metre. |

| | | |PLANNED PRODUCED GAS VOLUME FROM WELL ZONE |A planned produced gas volume from a specific well zone over a |

| | | | |specified period of time. |

| | | | |PLANNED PRODUCED GAS VOLUME FROM WELL ZONE - BBLS |A planned produced gas volume from a specific well zone measured in US |

| | | | | |barrels. |

| | | | |PLANNED PRODUCED GAS VOLUME FROM WELL ZONE - MMSCF|A planned produced gas volume from a specific well zone measured in |

| | | | | |million standard cubic feet. |

| | | | |PLANNED PRODUCED GAS VOLUME FROM WELL ZONE - SM3 |A planned produced gas volume from a specific well zone measured in |

| | | | | |standard cubic metre. |

| | | |UPPER LIMIT PLANNED PRODUCED GAS VOLUME |A planned produced gas volume which is the highest planned gas volume |

| | | | |produced from a well over a specified period of time. |

| | | | |UPPER LIMIT PLANNED PRODUCED GAS VOLUME - KSM3 |An upper limit planned produced gas volume measured in thousand |

| | | | | |standard cubic metre. |

| | | | |UPPER LIMIT PLANNED PRODUCED GAS VOLUME - SM3 |An upper limit planned produced gas volume measured in standard cubic |

| | | | | |metre. |

| | |THEORETICAL PRODUCED GAS VOLUME |A produced gas volume which is the calculated theoretical gas volume |

| | | |produced from a well over a specified period of time. |

| | | |THEORETICAL NET PRODUCED GAS VOLUME |A net produced gas volume which is the calculated theoretical net gas |

| | | | |volume produced from a well over a specified period of time. |

| | | |THEORETICAL PRODUCED GAS VOLUME - KSM3 |A theoretical produced gas volume measured in thousand standard cubic |

| | | | |metre. |

| | | |THEORETICAL PRODUCED GAS VOLUME - MMSCF |A theoretical produced gas volume measured in million standard cubic |

| | | | |feet. |

| | | |THEORETICAL PRODUCED GAS VOLUME - SM3 |A theoretical produced gas volume measured in standard cubic metre. |

| | | |THEORETICAL PRODUCED GAS VOLUME FROM WELL ZONE |A theoretical produced gas volume produced from a specific well zone. |

| | | | |THEORETICAL PRODUCED GAS VOLUME FROM WELL ZONE - |A theoretical produced gas volume from well zone measured in US |

| | | | |BBLS |barrels. |

| | | | |THEORETICAL PRODUCED GAS VOLUME FROM WELL ZONE - |A theoretical produced gas volume from well zone measured in million |

| | | | |MMSCF |standard cubic feet. |

| | | | |THEORETICAL PRODUCED GAS VOLUME FROM WELL ZONE - |A theoretical produced gas volume from well zone as measured in |

| | | | |SM3 |standard cubic metre. |

| |VOLUME OF GAS IN BLOCK |A volume of gas that is estimated to exist in a specific block. |

| |VOLUME OF GAS IN PLACE |A gas volume that is the volume of gas estimated to exist in a field or|

| | |reservoir. |

| |VOLUME OF GAS IN WELL ZONE |A gas volume that is the volume of gas contained in a specific drainage|

| | |zone in a well. |

| | |ALLOCATED VOLUME OF GAS IN WELL ZONE |The volume of gas assigned to be in a specific well zone. |

| | | | |ALLOCATED VOLUME OF GAS IN WELL ZONE - BBLS |An allocated volume of gas in well zone measured in US barrel. |

| | | | |ALLOCATED VOLUME OF GAS IN WELL ZONE - M3 (AT |An allocated volume of gas in well zone measured in cubic metre at |

| | | | |RESERVOIR CONDITIONS) |reservoir conditions (i.e. with a volume factor based on the given |

| | | | | |reservoir conditions). |

| | | | |ALLOCATED VOLUME OF GAS IN WELL ZONE - MMSCF |An allocated volume of gas in well zone measured in million standard |

| | | | | |cubic feet. |

| | | | |ALLOCATED VOLUME OF GAS IN WELL ZONE - SM3 |An allocated volume of gas in well zone measured in standard cubic |

| | | | | |metre. |

| |STANDARD VOLUME GAS |A standard volume of a gas. |

|HC-CONDENSATE VOLUME |A liquid volume that is a volume of hydrocarbon condensate (light |

| |hydrocarbon fractions produced with natural gas or natural occurring in|

| |an oil reservoir). |

| |PRODUCED HC-CONDENSATE VOLUME |A liquid volume which is the volume of hc-condensate produced from a |

| | |well. |

| | |ALLOCATED PRODUCED HC-CONDENSATE VOLUME |A produced hc-condensate volume which is the assumed condensate volume |

| | | |produced from a well over a specified period of time. |

| | | |ALLOCATED PRODUCED HC-CONDENSATE VOLUME - BBLS |An allocated produced hc-condensate volume measured in US barrels. |

| | | |ALLOCATED PRODUCED HC-CONDENSATE VOLUME - SM3 |An allocated produced hc-condensate volume measured in standard cubic |

| | | | |metre. |

| | |NET PRODUCED HC-CONDENSATE VOLUME |A produced hc-condensate volume which is the net volume of condensate |

| | | |produced from a well. |

| | | |ALLOCATED NET PRODUCED HC-CONDENSATE VOLUME |A net produced hc-condensate volume which is the assumed net condensate|

| | | | |volume produced from a well over a specified period of time. |

| | |PLANNED PRODUCED HC-CONDENSATE VOLUME |A produced hc-condensate volume which is the planned condensate volume |

| | | |produced from a well over a specified period of time. |

| | |THEORETICAL PRODUCED HC-CONDENSATE VOLUME |A produced hc-condensate volume which is the calculated theoretical |

| | | |condensate volume produced from a well over a specified period of time.|

| | | |THEORETICAL NET PRODUCED HC-CONDENSATE VOLUME |A net produced hc-condensate volume which is the calculated theoretical|

| | | | |net condensate volume produced from a well over a specified period of |

| | | | |time. |

| | | |THEORETICAL PRODUCED HC-CONDENSATE VOLUME - BBLS |A theoretical produced hc-condensate volume measured in US barrels. |

| | | |THEORETICAL PRODUCED HC-CONDENSATE VOLUME - SM3 |A theoretical produced hc-condensate volume measured in standard cubic |

| | | | |metre. |

| | | |THEORETICAL PRODUCED HC-CONDENSATE VOLUME FROM WELL ZONE|A theoretical produced hc-condensate volume from a well zone as |

| | | | |measured in standard cubic meters |

| | | | |THEORETICAL PRODUCED HC-CONDENSATE VOLUME FROM |A theoretical produced hc-condensate volume from a well zone measured |

| | | | |WELL ZONE - BBLS |in US barrels. |

| | | | |THEORETICAL PRODUCED HC-CONDENSATE VOLUME FROM |A theoretical produced hc-condensate volume from a well zone measured |

| | | | |WELL ZONE - SM3 |in standard cubic metre. |

| |VOLUME OF HC-CONDENSATE IN BLOCK |A hc-condensate volume that is the volume of condensate estimated to |

| | |exist in a specific block. |

| |VOLUME OF HC-CONDENSATE IN PLACE |A hc-condensate volume that is a volume of condensate estimated to |

| | |exist in a field or reservoir. |

| |VOLUME OF HC-CONDENSATE IN WELL ZONE |A hc-condensate volume that is the volume of condensate contained in a |

| | |specific drainage zone in a well. |

| | |ALLOCATED VOLUME OF HC-CONDENSATE IN WELL ZONE |The volume of hc-condensate assigned to be in a specific well zone. |

| | | |ALLOCATED VOLUME OF HC-CONDENSATE IN WELL ZONE - BBLS |An allocated hc-condensate volume of zone measured in US barrel. |

| | | |ALLOCATED VOLUME OF HC-CONDENSATE IN WELL ZONE - SM3 |An allocated hc-condensate volume of zone measured in cubic metre. |

| | |NET VOLUME OF HC-CONDENSATE IN WELL ZONE |A volume of hc-condensate in well zone that is estimated to be possible|

| | | |to extract out of the total volume possible. |

|OIL VOLUME |A liquid volume which is a volume of oil. |

| |PRODUCED OIL VOLUME |A oil volume which is the volume of oil produced from a well. |

| | |ALLOCATED PRODUCED OIL VOLUME |A produced oil volume which is the assumed oil volume produced from a |

| | | |well over a specified period of time. |

| | |PLANNED PRODUCED OIL VOLUME |A produced oil volume which is the planned oil volume produced from a |

| | | |well over a specified period of time. |

| | |THEORETICAL PRODUCED OIL VOLUME |A produced oil volume which is the calculated theoretical oil volume |

| | | |produced from a well over a specified period of time. |

| | |NET PRODUCED OIL VOLUME |A produced oil volume which is the net volume of oil produced from a |

| | | |well. |

| | | |ALLOCATED NET PRODUCED OIL VOLUME |A net produced oil volume which is the assumed net oil volume produced |

| | | | |from a well over a specified period of time. |

| | | | |ALLOCATED NET PRODUCED OIL VOLUME - BBLS |An allocated net produced oil volume measured in US barrels. |

| | | | |ALLOCATED NET PRODUCED OIL VOLUME - SM3 |An allocated net produced oil volume measured in standard cubic metre. |

| | | |PLANNED NET PRODUCED OIL VOLUME |A net produced oil volume which is the planned net oil volume produced |

| | | | |from a well over a specified period of time. |

| | | | |PLANNED NET PRODUCED OIL VOLUME - BBLS |A planned net oil volume produced from a well over a specified period |

| | | | | |of time measured in US barrels. |

| | | | |PLANNED NET PRODUCED OIL VOLUME - SM3 |A planned net oil volume produced from a well over a specified period |

| | | | | |of time measured in standard cubic metre. |

| | | | |PLANNED NET PRODUCED OIL VOLUME FROM WELL ZONE |A planned net produced oil volume from a specific zone in the well |

| | | | |PLANNED NET PRODUCED OIL VOLUME FROM WELL ZONE - |A planned net produced oil volume from well zone measured in US |

| | | | |BBLS |barrels. |

| | | | |PLANNED NET PRODUCED OIL VOLUME FROM WELL ZONE - |A planned net produced oil volume from well zone measured in standard |

| | | | |SM3 |cubic metre. |

| | | | |UPPER LIMIT PLANNED NET PRODUCED OIL VOLUME |A planned net produced oil volume which is the maximum net oil volume |

| | | | | |produced from a well over a specified period of time. |

| | | | |UPPER LIMIT PLANNED NET PRODUCED OIL VOLUME - SM3 |An upper limit planned net produced oil volume, measured in standard |

| | | | | |cubic metre. |

| | | |THEORETICAL NET PRODUCED OIL VOLUME |A net produced oil volume which is the calculated theoretical net oil |

| | | | |volume produced from a well over a specified period of time. |

| | | | |THEORETICAL NET PRODUCED OIL VOLUME - BBLS |A theoretical net produced oil volume measured in US barrels. |

| | | | |THEORETICAL NET PRODUCED OIL VOLUME - SM3 |A theoretical net produced oil volume measured in standard cubic metre.|

| | | | |THEORETICAL NET PRODUCED OIL VOLUME FROM WELL ZONE|A theoretical net produced oil volume which is the estimated net oil |

| | | | | |volume produced from a well zone over a specific period of time. |

| | | | |THEORETICAL NET PRODUCED OIL VOLUME FOR A WELL |A theoretical net produced oil volume from a zone as measured in |

| | | | |ZONE |barrels |

| | | | |THEORETICAL NET PRODUCED OIL VOLUME FROM WELL ZONE|A theoretical net produced oil volume from a zone measured in standard |

| | | | |- SM3 |cubic metre. |

| |VOLUME OF OIL IN BLOCK |A volume of oil that is estimated to exist in a specific block. |

| |VOLUME OF OIL IN PLACE |A volume of oil that is estimated to exist in a field or reservoir |

| |VOLUME OF OIL IN WELL ZONE |A volume of oil that is contained in a specific drainage zone in a well|

| | |ALLOCATED VOLUME OF OIL IN WELL ZONE |The volume of oil assigned to be in a specific well zone. |

| | | |ALLOCATED VOLUME OF OIL IN WELL ZONE - M3 (AT RESERVOIR |An allocated oil volume of zone measured in cubic metre at reservoir |

| | | |CONDITIONS) |conditions (i.e. with a volume factor based on the given reservoir |

| | | | |conditions). |

| | |NET VOLUME OF OIL IN WELL ZONE |A volume of oil in well zone that is estimated to be possible to |

| | | |extract out of the total volume possible. |

| | | |ALLOCATED NET VOLUME OF OIL IN WELL ZONE |A net volume of oil in well zone which is assigned to a specific well. |

| | | | |ALLOCATED NET VOLUME OF OIL IN WELL ZONE - BBLS |An allocated net oil volume of zone measured in us barrels. |

| | | | |ALLOCATED NET VOLUME OF OIL IN WELL ZONE - SM3 |An allocated net oil volume of zone measured in standard cubic metre. |

|WATER VOLUME |A liquid volume that is the volume of water. |

| |PRODUCED WATER VOLUME |A water volume which is the volume of water produced from a well. |

| | |ALLOCATED PRODUCED WATER VOLUME |A produced water volume which is the assumed water volume produced from|

| | | |a well over a specified period of time. |

| | | |ALLOCATED NET PRODUCED WATER VOLUME |A net produced water volume which is the assumed net water volume |

| | | | |produced from a well over a specified period of time. |

| | | |ALLOCATED PRODUCED WATER VOLUME - BBLS |An allocated produced water volume measured in US barrel. |

| | | |ALLOCATED PRODUCED WATER VOLUME - M3 |An allocated produced water volume measured in metre cubed. |

| | |NET PRODUCED WATER VOLUME |A produced water volume which is the net volume of water produced from |

| | | |a well. |

| | | |ALLOCATED NET PRODUCED WATER VOLUME |A net produced water volume which is the assumed net water volume |

| | | | |produced from a well over a specified period of time. |

| | | |THEORETICAL NET PRODUCED WATER VOLUME |A net produced water volume which is the calculated theoretical net |

| | | | |water volume produced from a well over a specified period of time. |

| | |PLANNED PRODUCED WATER VOLUME |A produced water volume which is the planned water volume produced from|

| | | |a well over a specified period of time. |

| | | |PLANNED PRODUCED WATER VOLUME - BBLS |A planned water volume produced from a well over a specified period of |

| | | | |time measured in US barrels. |

| | | |PLANNED PRODUCED WATER VOLUME - M3 |A planned water volume produced from a well over a specified period of |

| | | | |time measured in metre cubed. |

| | | |PLANNED PRODUCED WATER VOLUME FROM WELL ZONE |A planned produced water volume from a well zone over a specified |

| | | | |period of time. |

| | | | |PLANNED PRODUCED WATER VOLUME FROM WELL ZONE - |A planned produced water volume from a well zone as measured in US |

| | | | |BBLS |barrels. |

| | | | |PLANNED PRODUCED WATER VOLUME FROM WELL ZONE - M3 |A planned produced water volume from a well zone measured in metre |

| | | | | |cubed. |

| | | |UPPER LIMIT PLANNED PRODUCED WATER VOLUME |A planned produced water volume which, according to the plan, is the |

| | | | |highest water volume produced from a well over a specified period of |

| | | | |time. |

| | | | |UPPER LIMIT PLANNED PRODUCED WATER VOLUME - M3 |An upper limit planned produced water volume measured in cubic meters |

| | |THEORETICAL PRODUCED WATER VOLUME |A produced water volume which is the calculated theoretical water |

| | | |volume produced from a well over a specified period of time. |

| | | |THEORETICAL NET PRODUCED WATER VOLUME |A net produced water volume which is the calculated theoretical net |

| | | | |water volume produced from a well over a specified period of time. |

| | | |THEORETICAL PRODUCED WATER VOLUME - BBLS |A theoretical produced water volume measured in US barrels. |

| | | |THEORETICAL PRODUCED WATER VOLUME - M3 |A theoretical produced water volume measured in metre cubed. |

| | | |THEORETICAL PRODUCED WATER VOLUME FROM WELL ZONE |A theoretical produced water volume produced from a specific well zone |

| | | | |over a specified period of time. |

| | | | |THEORETICAL PRODUCED WATER VOLUME FROM WELL ZONE -|A theoretical produced water volume from well zone as measured in US |

| | | | |BBLS |barrels. |

| | | | |THEORETICAL PRODUCED WATER VOLUME FROM WELL ZONE -|A theoretical produced water volume from well zone as measured in metre|

| | | | |M3 |cubed. |

| |VOLUME OF WATER IN WELL ZONE |A water volume that is the volume of water contained in a specific |

| | |drainage zone in a well. |

| | |ALLOCATED VOLUME OF WATER IN WELL ZONE |The volume of water assigned to be in a specific well zone. |

| | | |ALLOCATED VOLUME OF WATER IN WELL ZONE - BBLS |An allocated net oil volume of zone measured in US barrel. |

| | | |ALLOCATED VOLUME OF WATER IN WELL ZONE - M3 |An allocated net oil volume of zone measured in metre cubed. |

| | | |ALLOCATED VOLUME OF WATER IN WELL ZONE - M3 (AT |An allocated water volume of zone measured in cubic metre at reservoir |

| | | |RESERVOIR CONDITIONS) |conditions (i.e. with a volume factor based on the given reservoir |

| | | | |conditions). |

| | |NET VOLUME OF WATER IN WELL ZONE |A volume of water in well zone that is estimated to be possible to |

| | | |extract out of the total volume possible. |

| |MONTHLY PRODUCTION VOLUME |A volume which includes the production for a month. |

|SOLIDS VOLUME |A volume which is the volume of solids. |

| |PRODUCED SOLIDS VOLUME |A volume which is the volume of solids produced from a well. |

4 Production mass (weight) terms

|PRODUCED GAS MASS |A gas mass which is the mass of gas produced from a well. |

| |ALLOCATED PRODUCED GAS MASS |A mass which is the assumed gas mass produced from a well over a specified |

| | |period of time. |

| |ALLOCATED NET PRODUCED GAS MASS |A mass which is the assumed net gas mass produced from a well over a specified |

| | |period of time. |

| | |ALLOCATED PRODUCED GAS MASS - KG |An allocated produced gas volume measured in kilogram. |

| | |ALLOCATED PRODUCED GAS MASS - TONNE |An allocated produced gas volume measured in metric tonne. |

| |NET PRODUCED GAS MASS |A produced gas mass which is the net mass of gas produced from a well. |

| |THEORETICAL PRODUCED GAS MASS |A mass which is the theoretical gas mass produced from a well over a specified |

| | |period of time. |

| |ALLOCATED GAS CUT RATE VOLUME |A standard volume gas which is the assumed fraction of gas in the total flow |

| | |rate produced from a well. |

|PRODUCED HC-CONDENSATE MASS |A liquid mass which is the mass of hc-condensate produced from a well. |

| |ALLOCATED PRODUCED HC-CONDENSATE MASS |A produced hc-condensate mass which is the assumed mass of condensate produced |

| | |from a well over a specified period of time. |

| | |ALLOCATED PRODUCED HC-CONDENSATE MASS - KG |An allocated produced hc-condensate mass measured in kilogram. |

| | |ALLOCATED PRODUCED HC-CONDENSATE MASS - TONNE |An allocated produced hc-condensate mass measured in metric tonne. |

| |THEORETICAL PRODUCED HC-CONDENSATE MASS |A mass which is the theoretical hc-condensate mass produced from a well over a |

| | |specified period of time. |

| |NET PRODUCED HC-CONDENSATE MASS |A produced hc-condensate mass which is the net mass of hc-condensate produced |

| | |from a well. |

|PRODUCED OIL MASS |A liquid mass which is the mass of oil produced from a well. |

| |ALLOCATED PRODUCED OIL MASS |A mass which is the assumed oil mass produced from a well over a specified |

| | |period of time. |

| |NET PRODUCED OIL MASS |A produced oil mass which is the net mass of oil produced from a well. |

| | |ALLOCATED NET PRODUCED OIL MASS |A mass which is the assumed net oil mass produced from a well over a specified |

| | | |period of time. |

| | |ALLOCATED NET PRODUCED OIL MASS - KG |A mass which is the assumed net oil mass produced from a well over a specified |

| | | |period of time measured in kilograms. |

| | |ALLOCATED NET PRODUCED OIL MASS - TONNE |A mass which is the assumed net oil mass produced from a well over a specified |

| | | |period of time measured in metric tonne. |

| |THEORETICAL PRODUCED OIL MASS |A mass which is the theoretical oil mass produced from a well over a specified |

| | |period of time. |

|PRODUCED WATER MASS |A liquid mass which is the mass of water produced from a well. |

| |ALLOCATED PRODUCED WATER MASS |A produced water mass which is the assumed mass of water produced from a well |

| | |over a specified period of time. |

| | |ALLOCATED PRODUCED WATER MASS - KG |An allocated produced water mass measured in kilogram. |

| | |ALLOCATED PRODUCED WATER MASS - TONNE |An allocated produced water mass measured in metric tonne. |

| |NET PRODUCED WATER MASS |A produced water mass which is the net mass of water produced from a well. |

| |THEORETICAL PRODUCED WATER MASS |A produced water mass which is the theoretical water mass produced from a well |

| | |over a specified period of time. |

|SOLID MASS |A mass that is the mass of a quantity solid. |

| |PRODUCED SOLIDS MASS |A solid mass which is the mass of solids produced from a well. |

| | |

|SAND CONTENT |A quantity of sand. |

| |SAND CONTENT AVERAGED |An average quantity of sand. |

| |UPPER LIMIT SAND CONTENT |An upper limit quantity of sand. |

5 Definitions of pressure terms.

|BOTTOMHOLE PRESSURE |A pressure at the bottom of a well. |

| |AVERAGE BOTTOMHOLE PRESSURE |An average pressure at the bottom of a well. |

| | |AVERAGE BOTTOMHOLE PRESSURE - BARG |An average bottomhole pressure expressed in bar gauge. |

| | |AVERAGE BOTTOMHOLE PRESSURE - PSIG |An average bottomhole pressure expressed in psi gauge. |

| |LOWER LIMIT BOTTOMHOLE PRESSURE |A bottomhole pressure which is the lowest acceptable. |

| |UPPER LIMIT BOTTOMHOLE PRESSURE |A bottom hole pressure which is the highest acceptable. |

|CHOKE VALVE INLET PRESSURE |A pressure at the inlet of a choke valve. |

| |CHOKE LINE FLUID STREAM PRESSURE AT CHOKE VALVE INLET SIDE | |

| |CHOKE VALVE INLET PRESSURE AVERAGED |An average pressure at the outlet of a choke valve. |

| |LOWER LIMIT CHOKE VALVE INLET PRESSURE |A choke valve inlet pressure which is the lowest acceptable. |

| |UPPER LIMIT CHOKE VALVE INLET PRESSURE |A choke valve inlet pressure which is the highest acceptable. |

|CHOKE VALVE OUTLET PRESSURE |A pressure at the outlet of a choke valve. |

| |CHOKE LINE FLUID STREAM PRESSURE AT CHOKE VALVE OUTLET SIDE | |

| |LOWER LIMIT CHOKE VALVE OUTLET PRESSURE |A choke valve outlet pressure which is the lowest acceptable. |

| |UPPER LIMIT CHOKE VALVE OUTLET PRESSURE |A choke valve outlet pressure which is the highest acceptable. |

| |CHOKE VALVE OUTLET PRESSURE AVERAGED |An average pressure at the outlet of a choke valve. |

| | |CHOKE VALVE OUTLET PRESSURE AVERAGED - BARG |An averaged choke valve outlet pressure measured in bar gauge. |

| | |CHOKE VALVE OUTLET PRESSURE AVERAGED - PSIG |An averaged choke valve outlet pressure measured in PSI gauge |

|LIFT GAS PRESSURE |A pressure which is the pressure of the gas in a gas lift system. |

| |AVERAGE LIFT GAS PRESSURE |A gas lift pressure which is the average pressure of a gas lift system.|

| | |AVERAGE LIFT GAS PRESSURE - BARG |An average gas lift pressure which is the adjusted supply pressure of |

| | | |the gas lift system measured in bar gauge. |

| | |AVERAGE LIFT GAS PRESSURE - PSIG |An average gas lift pressure which is the adjusted supply pressure of |

| | | |the gas lift system measured in PSI gauge. |

| |LOWER LIMIT LIFT GAS PRESSURE |A gas lift pressure which is the least acceptable. |

| |MEASURED LIFT GAS PRESSURE |A measured pressure in a gas lift system. |

| |RISER BASE LIFT GAS PRESSURE |A gas lift pressure which is the gas lift pressure at riser base. |

| |UPPER LIMIT LIFT GAS PRESSURE |A gas lift pressure which is the highest acceptable. |

|INTERNAL PRESSURE |A pressure which is acting on the inside. |

| |SUBSEA ELECTRONIC MODULE INTERNAL PRESSURE |An internal pressure that is the pressure in a subsea electronic |

| | |module. |

|PIPELINE PRESSURE |A pressure in a pipeline |

| |SUBSEA FLOWLINE PRESSURE AVERAGED |A pressure in a subsea flowline which is averaged. |

| | |SUBSEA FLOWLINE PRESSURE AVERAGED – BARG |A pressure in a subsea flowline which is averaged, measured in bar |

| | | |gauge. |

| | |SUBSEA FLOWLINE PRESSURE AVERAGED – PSIG |A pressure in a subsea flowline which is averaged, measured in PSI |

| | | |gauge. |

|PRE CHARGE PRESSURE |A pressure that is the pressure used for pre charging a system or |

| |cavity. |

| |SUBSEA HIGH PRESSURE ACCUMULATOR PRE CHARGE PRESSURE |A high pressure pre charge pressure that is the pre charge pressure for|

| | |a compensator on a subsea control module. |

| |SUBSEA LOW PRESSURE ACCUMULATOR PRE CHARGE PRESSURE |A low pressure pre charge pressure that is the pre charge pressure for |

| | |a compensator on a subsea control module. |

|WELL ANNULUS PRESSURE |A pressure in a well annulus. |

| |WELL ANNULUS B PRESSURE | |A well annulus pressure in the "B" annulus |

| |WELL ANNULUS C PRESSURE | |A well annulus pressure in the "C" annulus |

| |WELL ANNULUS PRESSURE AVERAGED |A well annulus pressure averaged |

| | |WELL ANNULUS PRESSURE AVERAGED - PSIG |A well annulus pressure averaged measured in PSI gauge. |

|WELLHEAD ANNULUS PRESSURE |A pressure at the wellhead annulus. |

| |WELLHEAD ANNULUS PRESSURE AVERAGED |A wellhead annulus pressure that is averaged |

| | |WELL ANNULUS PRESSURE AVERAGED - BARG |A well annulus pressure averaged measured in bar gauge. |

|WELLHEAD DOWNSTREAM PRESSURE |The wellhead pressure, as measured at the master production valve. |

| |WELLHEAD DOWNSTREAM PRESSURE AVERAGED |An averaged wellhead downstream pressure |

| | |WELLHEAD DOWNSTREAM PRESSURE AVERAGED - BARG |An averaged wellhead downstream pressure measured in bar gauge. |

| | |WELLHEAD DOWNSTREAM PRESSURE AVERAGED - PSIG |An averaged wellhead downstream pressure measured in psi gauge. |

|WELLHEAD PRESSURE |A pressure that is the pressure registered in the wellhead of a well. |

| |WELLHEAD PRESSURE AVERAGED |A wellhead pressure that is averaged. |

| | |WELLHEAD PRESSURE AVERAGED - BARG |An averaged wellhead pressure, measured in bar gauge, |

| | |WELLHEAD PRESSURE AVERAGED - PSIG |An averaged wellhead pressure, measured in psi gauge. |

| |UPPER LIMIT PRESSURE AT WELLHEAD |The maximum allowable wellhead pressure |

| | |PLANNED UPPER LIMIT PRESSURE AT WELLHEAD |The upper limit wellhead pressure that is planned for |

| | |PLANNED UPPER LIMIT PRESSURE AT WELLHEAD - BARG |An upper limit pressure which is the highest wellhead pressure that is |

| | | |planned for measured in bar gauge. |

6 Definitions of temperature terms.

|BOTTOMHOLE TEMPERATURE |A temperature at the bottom of a well. |

| |AVERAGE BOTTOMHOLE TEMPERATURE |An average temperature at the bottom of a well. |

| |LOWER LIMIT BOTTOMHOLE TEMPERATURE |A bottomhole temperature which is the lowest acceptable. |

| |BOTTOMHOLE TEMPERATURE - DEG F |A bottomhole temperature in degree Fahrenheit. |

| |BOTTOMHOLE TEMPERATURE - DEG C |A bottomhole temperature in degree Celsius. |

| |UPPER LIMIT BOTTOMHOLE TEMPERATURE |A bottom hole temperature which is the highest acceptable. |

|CHOKE LINE FLUID STREAM TEMPERATURE AT CHOKE VALVE OUTLET SIDE |A temperature which is the temperature in the fluid stream on the |

| |outlet side of a choke valve. |

| |CHOKE LINE FLUID STREAM TEMPERATURE AT CHOKE VALVE OUTLET SIDE |An average of the fluid stream temperature at choke line outlet side. |

| |AVERAGED | |

| | |CHOKE LINE FLUID STREAM TEMPERATURE AT CHOKE VALVE |A choke line fluid stream at choke valve outlet side, measured in |

| | |OUTLET SIDE AVERAGED - DEG C |degree Celsius. |

| | |CHOKE LINE FLUID STREAM TEMPERATURE AT CHOKE VALVE |A choke line fluid stream at choke valve outlet side, measured in |

| | |OUTLET SIDE AVERAGED - DEG F |degree Fahrenheit. |

|LIFT GAS TEMPERATURE |A temperature of the gas in a gas lift system. |

| |AVERAGE LIFT GAS TEMPERATURE |An average temperature of the gas in a gas lift system. |

| | |AVERAGE LIFT GAS TEMPERATURE - DEG C |An average temperature of the gas in a gas lift system expressed in |

| | | |degree Celsius. |

| | |AVERAGE LIFT GAS TEMPERATURE - DEG F |An average temperature of the gas in a gas lift system expressed in |

| | | |degree Fahrenheit. |

| |LOWER LIMIT LIFT GAS TEMPERATURE |A lower limit temperature of the gas in a gas lift system. |

| |MEASURED LIFT GAS TEMPERATURE |A temperature measured in the gas in a gas lift system. |

| |UPPER LIMIT LIFT GAS TEMPERATURE |An upper limit temperature of the gas in a gas lift system. |

|WELLHEAD DOWNSTREAM TEMPERATURE |A wellhead temperature, as measured at the master production valve |

| |WELLHEAD DOWNSTREAM TEMPERATURE AVERAGED |An averaged wellhead downstream temperature |

| | |WELLHEAD DOWNSTREAM TEMPERATURE AVERAGED - DEG C |An averaged wellhead downstream temperature measured in degree Celcius.|

| | |WELLHEAD DOWNSTREAM TEMPERATURE AVERAGED - DEG F |An averaged wellhead downstream temperature measured in degree |

| | | |Fahrenheit. |

|WELLHEAD TEMPERATURE |A temperature measured at the wellhead |

| |WELLHEAD TEMPERATURE AVERAGED |A wellhead temperature that is averaged. |

| | |WELLHEAD TEMPERATURE AVERAGED - DEG C |An averaged wellhead temperature, measured in degree Celsius. |

| | |WELLHEAD TEMPERATURE AVERAGED - DEG F |An averaged wellhead temperature, measured in degree Fahrenheit. |

7 Definitions of Names, Dates and other information terms

|IDENTIFIER |A term which is sufficiently unique within a context to identify an object. |

| |NAME |An identifier which is the utterance or expression by which an object e.g. a |

| | |thing, person, organisation, place, etc. is known or spoken to or of. |

| | |FLOWLINE NAME |A name of a flowline. |

| | |OIL & GAS PRODUCTION FACILITY NAME |A name of an oil & gas production facility. |

| | |PETROLEUM FIELD NAME |A name of an oil or gas field. |

| | |SUBSEA TEMPLATE NAME |A name of a subsea template. |

| | |TEMPLATE NAME |A name of a template structure for subsea oil and gas production. |

| | |WELL ALTERNATIVE NAME |A name used as an alternative name of a well. |

| | |WELL NAME |A name that is the name of an oil well drilled in order to produce or inject |

| | | |gas, oil or water. Rules for describing/naming the well are given by NPD. |

| | |WELL OFFICIAL NAME |A name which is used by the authoritative body of the country where the well |

| | | |is located. |

| | | |WELL NPD NAME |A well official name which is used by the Norwegian Petroleum Directorate. |

| |IDENTIFICATION CODE |An identifier which is encoded according to some convention. Typically but |

| | |not necessarily concatenated from parts each with a meaning. |

| | |FAULT BLOCK IDENTIFICATION CODE |An identification code for a fault block. |

| | |FLOWLINE IDENTIFICATION CODE |An identification code of a flowline. |

| | |FORMATION CODE | |

| | |FORMATION IDENTIFICATION CODE |An identification code for a formation structure. |

| | |TEMPLATE IDENTIFICATION CODE |An identification code of a template structure for subsea oil and gas |

| | | |production. |

| | |TEMPLATE SLOT NUMBER |An identification code of a template slot number. |

| | |WELL IDENTIFICATION CODE |An identification code for a well. |

| | | |OPEN WORKS UNIQUE WELL IDENTIFIER |An identification code which is the Open Works unique well identifier. This |

| | | | |is a standard 16-character code which defines the bottomhole location and |

| | | | |each significant drilling or completion event in the well. |

| | |WELLBORE INTERVAL SEQUENCE NUMBER |A sequence number which identifies a well perforation. |

| | |WELLBORE NUMBER |An identification code of a wellbore. |

|INFORMATION |A set of one or more facts about something. |

| |DESCRIPTION |An information that describes something. |

| | |WELL TYPE |A description of a well. |

| |COORDINATE SYSTEM |A temporary class to aid in migration of STEPlib mathematical objects to ECM |

| | |V4. |

| | |UTM COORDINATE SYSTEM |A coordinate system which divides the earth into 60 zones, each 6 degrees of |

| | | |longitude wide. These zones define the reference point for UTM (Universal |

| | | |Transverse Mercator) grid coordinates within the zone. UTM zones extend from |

| | | |a latitude of 80 degrees so |

| | |UTM COORDINATES |The UTM (Universal Transvers Mercator) grid coordinates. |

| | | |UTM EASTING COORDINATE |A UTM coordinate which is the distance in metres to the east. |

| | | |UTM NORTHING COORDINATE |A UTM coordinate which is the distance in metres to the north. |

| | |

|END DATE |A date during which something ended, or may end. |

| |WELL END DATE |An end date referring to the date which is the date that operations in the |

| | |well stopped |

| | |PLANNED END DATE OF WELL PRODUCTION |A date which is the planned or predicted future date for the termination of |

| | | |well production. |

| | |WELL PRODUCTION END DATE |A well end date which is the date the well stopped production. |

|START DATE |A date during which something started, or may start. |

| |WELL START DATE |A start date which is the date when an operation in the well started. |

| | |WELL COMMISSIONING START DATE |A well start date which is the date the commissioning of the well started. |

| | |WELL DRILLING START DATE |A well start date which is the date the drilling of the well started. |

| | |WELL PRODUCTION START DATE |A well start date which is the date the well started production. |

| | |WELL ABANDONMENT DATE |The date when operations of a well cease permanently. |

| | |CAPPED WELL DATE |The date when operations of a well cease. |

|NUMBER OF GAS LIFT OPERATING HOURS |A count which is the number of operating hours for a gas lift system. |

|NUMBER OF HOURS ON STREAM |A count which is the number of hours on stream. |

8 Miscellaneous production related terms

|PLANT |A device which consists of the land, buildings, machinery, apparatus, and fixtures |

| |employed in carrying on a trade or an industrial business. |

| |OIL & GAS PRODUCTION FACILITY |A plant employed in carrying out the processes and activities required to produce and|

| | |stabilize crude oil. |

| | |

|SUPPORT |A device which is capable of keeping some other thing from falling, sinking or |

| |failing. |

| |COLUMN |A support which is a cylindrical or slightly tapering body of considerably greater |

| | |length than diameter, erected vertically as a support. |

| | |

|GAS LIFTING |To reduce the hydrostatic pressure of a vertical fluid column by injecting gas into |

| |the fluid. |

| |WELL GAS LIFTING |Gas lifting of the fluid column contained in the production tubing in a wellbore. |

| | |

|OPERATIONAL STATUS |An operating state which applies to a service line. |

| |STATUS FOR PLANNED MONTHLY PRODUCTION RATES |An operational status that includes the status for planned monthly production rates. |

| | |

|ROCK (GEOL.) |A solid compound that is one of stratified or igneous material constituents of which |

| |the earth's crust is composed, including sands, clays etc. |

| |FAULT BLOCK |A mass of naturally displaced rock. |

| |FORMATION |Any assemblage of rocks which have some character in common, whether of origin, age |

| | |or composition. The formation terminology means the lithological character and origin|

| | |of the rock. |

| | |

|RKB HEIGHT |A height which is the elevation from a location along the drillstring to the Kelly |

| |Bushing on the drill floor. The abbreviation RKB means Relative to Kelly Bushing. |

| | |

|WATER DEPTH |A depth which is the depth from sea level to the seabed. |

| |UPPER LIMIT OPERATING WATER DEPTH |A water depth that is the upper limit water depth where an object is designed to |

| | |operate. |

3 Generic data

This list of generic terms is part of the ISO 13926 core library and have thus been agreed in the ISO committee.

|AREA |A = double integral (dx.dy) where x and y are cartesian coordinates |

| |AVERAGE AREA |An area which is the quotient obtained by dividing the total sum of a set of area |

| | |measurements by the total number of measurements. |

|ARTEFACT |An inanimate physical object that is made or given shape by man. |

|COMMAND |An information which is a set of instructions |

| |START COMMAND |A command intended to initiate the beginning of an activity |

| |STOP COMMAND |A command to terminate an action or a set of actions. |

|COUNT |The number of something |

|DEVICE |A functional object which is a specification of the capabilities an object is intended to |

| |fulfil. |

|DISTANCE |A measure of remoteness between two points |

| |LENGTH |ISO 31-1:1992(E) Length is one of the base quantities on which the SI is based. ISO 31 |

| | |provides no definition. |

| | |MEASURED LENGTH |A length which is the measured length. |

| |STRAIGHT LINEAR DISTANCE |A distance which is the distance between two points in space measured along a straight line.|

|DURATION |The continuance or length of time |

|ELECTRICAL RESISTANCE |In electrical and acoustical fields, the real part of the impedance characterised by the |

| |dissipation of energy as opposed to its storage. Electrical resistance may vary with |

| |temperature, polarity, field illumination, purity of materials etc. Reciprocal of |

| |conductance. |

| |INSULATION ELECTRICAL RESISTANCE |An electrical resistance that is a measure of the resistance between earth and an electrical|

| | |circuit. |

|FORCE |The resultant force acting on a body is equal to the derivative with respect to time of the |

| |momentum of the body |

|FORMAT |A coding system according to a set of rules. Typically standardised |

| |DATE FORMAT | |

| | |YYYY-MM-DD |A date format in the format 2004-12-27. |

|IDENTIFIER |A term which is sufficiently unique within a context to identify an object. |

| |IDENTIFICATION CODE |An identifier which is encoded according to some convention. Typically but not necessarily |

| | |concatenated from parts each with a meaning. |

| |NAME |An identifier which is the utterance or expression by which an object e.g. a thing, person, |

| | |organisation, place, etc. is known or spoken to or of. |

| | |CODE |A name which is structured according to some coding rule |

|INFORMATION |A set of one or more facts about something. |

| |COMMENT |An information content which is written criticism or explanation. |

|ISO/IS 15926-4 SINGLE_PROPERTY_DIMENSION |A 'property_space' that is a single and complete continuum of properties each of which maps |

| |to a single number. |

| |RATIO |A measure which is the relation between two similar magnitudes in respect to the number of |

| | |times the first contains the second, integrally or fractionally. |

|MASS | |

| |GAS MASS | |A mass that is the mass of a quantity gas. |

| |LIQUID MASS | |A mass that is the mass of a quantity liquid. |

|OPERATING STATE |A concept of state which states a set of conditions under which an object or systems is |

| |expected to operate. |

|OPERATOR |Type of limit represented by a class of Characteristic. |

| |AVERAGE |An Operator that is the result obtained by adding several amounts together and then dividing|

| | |the total by the number of amounts. |

| |LOWER LIMIT |An operator that is a lower bounded range of quantities. |

| |UPPER LIMIT |An operator indicating that the Characteristic Class represents the largest allowable |

| | |quantity. |

|PRESSURE |Force perpendicular to the area divided by area. p = dF/dA where dF is the perpendicular |

| |component of the force acting on the area element dA. The pressure is positive when the |

| |force is acting into the area. |

| |AVERAGE PRESSURE |A pressure which is the quotient obtained by dividing the total sum of a set of pressure |

| | |measurements by the total number of measurements. |

| |DESIGN PRESSURE |A pressure which an object is designed to withstand. |

| |MEASURED PRESSURE |A pressure which is a readout from an instrument (e.g. pressure transmitter). |

| |OPERATING PRESSURE |A pressure under which an object is expected to operate |

| |LOWER LIMIT PRESSURE |A pressure which is the lowest allowable pressure. |

| |UPPER LIMIT PRESSURE |A pressure which is the highest allowable pressure. |

|(QUANTITY) |(Not in library) |

| |UPPER LIMIT QUANTITY |A quantity which is the highest allowable. |

| |AVERAGE QUANTITY |A quantity which is the quotient obtained by dividing the total sum of a set of quantity |

| | |measurements by the total number of measurements. |

|SIGNAL |A detectable physical quantity or impulse (as a voltage, current, or magnetic field strength) by |

| |which messages or information can be transmitted. |

|RATE |A property meaning a number of events happening over time. |

| |EROSION RATE | |A rate which states the decrease in thickness caused by erosion with respect to time. |

| |FLOW RATE | |A flow of substance pr unit time. |

|TEMPERATURE |The degree or intensity of heat or cold as measured on a thermometric scale, and a measure of |

| |whether two systems are relatively hot or cold with respect to one another. Two systems brought |

| |into contact will, after sufficient time, be in thermal equilibrium |

| |CELSIUS TEMPERATURE |t = T - To where To is defined as being equal to 273,15K |

| |FAHRENHEIT TEMPERATURE | |

| |MEASURED TEMPERATURE |A temperature which is a readout from an instrument (e.g. thermometer). |

| |UPPER LIMIT TEMPERATURE |A temperature which is the highest allowable temperature, i.e. which is not to be exceeded. |

|TO REDUCE |To diminish in size, amount, extent, or number |

|VOLUME |V = tripple integral (dx.dy.dz) where x, y and z are cartesian coordinates |

| |GAS VOLUME | |A volume of gas obeying the physical law of gases. |

| |LIQUID VOLUME | |A volume which contains a liquid. |

| |SOLIDS VOLUME | |A volume which is the volume of solids. |

|VOLTAGE |An electrical potential or potential difference expressed in volts. |

|WEIGHT |The weight of a body in a specific reference system is the force which, when applied to the body, |

| |would give it an acceleration equal to free fall in that reference system |

| |DRY WEIGHT |A weight of an object excluding any operating or process fluids. |

[pic]

-----------------------

Wellhead w/Christmas Tree (HXT):

Well Production Tubing assembly

Wellhead housing

Well Tubing (String)

Casing (String)

Pipe

Tree cap

Christmas Tree

Production outlet

Pressure class

Tubing hanger

Production Master Valve

Annulus Master Valve

Plug

Nominal Size

Nominal Length

Flow Rate

Tubing annulus

Casing “B” annulus

Annulus circulation Valve

Crossover flowloop

Tubing hanger seal

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