SOUTH AFRICAN GEOPHYSICAL ASSOCIATION 2005



SOUTH AFRICAN GEOPHYSICAL ASSOCIATION 2005

WEDNESDAY 14 SEPTEMBER

SESSION 1 OPENING PLENARY

09:00 Welcome: Robin Sutherland, Chairman SAGA 2005

09:30 Klaas Koster, Vice President SEG

What’s new in Society, Exploration, and Geophysics

09:50 The role of a professional society in fostering the multi-disciplinary future of exploration and production.

Theo Kortekaas, Vice President EAGE

10:10 Prizewinning published paper

10:30 TEA

TRACK1

SESSION 2 MULTIDISCIPLINARY

11:10 Combined stochastic and deterministic modelling as an

innovative approach to jointly interpret multi-method airborne

geophysical data sets

Detlef G Eberle, Research & Airborne Geophysicist, Federal

Institute for Geosciences & Natural Resources (BGR) of Germany

11:30 Innovative data processing methods for gradient airborne

geophysical datasets

Desmond Fitzgerald, Managing Director, Intrepid Geophysics

11:50 Creating realistic 3D Geology models rapidly, using geophysics

to test them

Philip McInerney, New Product Manager, Intrepid Geophysics

12:10 Multidisciplinary geophysical investigations applied to

unconformity-associated uranium exploration,

Athabasca Basin, Canadian Shield

Michael David Thomas, Research Scientist, Geological

Survey of Canada, Natural Resources Canada

12:30 LUNCH

TRACK2

SESSION 3 SEISMICS

The establishment of AfricaArray and sustainable geophysics

training

Paul Dirks, University of the Witwatersrand

The Initiation of the South Atlantic Ocean: The broad context,

the local questions

Colin Reeves, Professor and Consultant, Earthworks

"AfricaSpan" regional 2D seismic and potential field programs

Neil Taylor, Business Development Manager, GX Technology

The value of long offset acquisition offshore Namibia

Steve Toothill, Interpretation Advisor, Veritas DGC

SESSION 4 MAGNETICS

13:50 On kimberlite detection in brown-field exploration:

some challenges to geophysics

Moctar Doucouré, Senior Technical Specialist, De Beers Group Services

14:10 Some thoughts on the crustal structure of the

Mauritanides as revealed by geophysical data

Jaco Smit, Senior Geophysicist, Council for Geoscience

14:30 A 3D magnetic model of the Vredefort impact

structure: Preliminary results of a magnetic survey

over the granulite-amphibolite transition

Manfriedt Muundjua, Student, University of the

Witwatersrand

14:50 New palaeomagnetic data from the main and upper

zones of the Bushveld Complex

Shawn Letts, Student, University of the Witwatersrand

15:10 TEA

SESSION 6 MAGNETICS AND MULTIDISCIPLINARY

15:50 Coaltech2020 - Aeromagnetic Merge Project

Stephanus Johannes du Plessis, Divisional

Geophysicist, Anglo American

16:10 Enhancing extended Euler deconvolution

Gordon Cooper, Associate Professor, University of the

Witwatersrand

16:30 Testing of geodetic and geophysical parameters on

potential sites for space geodesy observatory

Sakia Madiseng, Student, University of the

Witwatersrand and HartRAO

16:50 Development of an environmental geophysics test site

Stoffel Fourie, Geophysicist, Council for Geoscience

SESSION 5 SEISMIC + MULTIDISCIPLINARY

Smarter depth information: using geology in

geophysical inversions

Chris Wijns, Group Geophysicist, Resolute Mining

Implications of palaeogeotherms for the thermal

history of the Witwatersrand Basin, South Africa

Michael Jones, Senior Research Officer, University of

the Witwatersrand

Comparison of seismic location methods on a South

African gold mine

Ben Young, Seismologist, GeoHydroSeis

Seismic magnitude and its application in the South

African mining industry

Darren Burrows, Seismologist, GeoHydroSeis

15:10 TEA

SESSION 7 SEISMICS

Fast track reservoir characterisation of a subtle

Paleocene deep marine turbidite field using a rock

physics and seismic modelling led workflow

Henry Morris, Lead Geophysicist, Ikon Science

The applicability of various seismic offset reflectivity models

George Smith, Senior Lecturer, University of Cape Town

Program realization of direct and inverse problems

of the AVO

Liliya Malovichko, Geophysicist, Permneftegeofyzica

The fluid factor angle applied to the Sable oil field area (South Africa)

Buhlebufikile Pius Hlatshwayo, Intern Geophysicist,

Petroleum Agency SA

THURSDAY 15 SEPTEMBER

SESSION 8 GRAVITY

08:30 Errors assessment of airborne vertical gravity data

processing procedures

Laurent Ameglio, Chief Geophysicist, Fugro Airborne

Survey

08:50 Quality measures for airborne gravity gradiometry

Karel Zuidweg, Business Development Manager, Bell

Geospace Limited

09:10 The application of the continuous wavelet transform

to potential field data

Gordon Cooper, Associate Professor, University of the

Witwatersrand

09:30 Processing of gravity data using gravity wavelets

Antony Chatu, Student, University of the

Witwatersrand

09:50 Three-dimensional gravity model of the

Witwatersrand Basin and Vredefort impact

Structure

Stephen Coomber, Student, University of the

Witwatersrand

10:10 TEA

SESSION 9 SEISMICS

Ibhubesi Field, South Africa: is cross-plotting of AVO attributes a

reliable / suitable technique to predict gas directly

Mxolisi Mbandezi, Student, University of Cape Town

Adding value to old seismic data through re-processing

Mark Gibson, Consultant, GeoScience Solutions

Case studies on Kirchhoff and wave equation anisotropic PSDM

Sergio Grion, Research Geophysicist, Veritas DGC

Angle gathers for wave equation pre stack depth migration

Pierre Lanfranchi, R&D Manager, CGG

AVO analysis unlocking additional reserves?

Andrew Dippenaar, Chief Geophysicist, PetroSA

10:10 TEA

SESSION 10 GRAVITY + RADAR

10:50 Imaging deep geology using full tensor gravity

gradiometry inversion: K-2, deepwater Gulf of Mexico

Phillip Houghton, Sales Manager, ARKeX

11:10 Detail geophysical investigation - Anglo Platinum –

Paardekraal shaft

Stephanus Johannes du Plessis, Divisional

Geophysicist, Anglo American

11:30 Borehole radar EM wave simulation for mining

applications using a parallel implementation of the

3-D FDTD algorithm

Pradip Mukhopadhyay, PhD Student, University of

Cape Town

11:50 Improved interpretation of borehole radar data

through interactive 3D forward modeling

Declan Vogt, Manager, CSIR Miningtek

12:10 Borehole radar delineation of the UG2 reef at

Modikwa Platinum Mine

Petro du Pisani, Research Geophysicist, CSIR

Miningtek

12:30 LUNCH

SESSION 11 ELECTRICAL

Application of the multi-electrode resistivity method to surface-

water/ground-water interaction as applied to vegetation controls

Louise Soltau, Hydrogeophysicist, CSIR Environmentek

Surface nuclear magnetic resonance (SNMR) sounding technique applied to primary aquifers in Southern Africa

Reinie Meyer, Project leader, CSIR Environmentek

Electro-kinetic soundings with a TDEM instrument

Valeriya Hallbauer-Zadorozhnaya, Senior Scientist,

Council For Geoscience

In-mine electrical resistance tomography (ERT)

Michael van Schoor, Senior Research Geophysicist,

CSIR Miningtek

Development of a combined resistivity and induced polarization instrument for the laboratory environment

Leonie Mare, Geophysicist, Council for Geoscience

12:30 LUNCH

SESSION 12 ELECTRO-MAGNETICS

13:50 Application of an improved S-layer differential

transform on TDEM sounding data to delineate an

iron ore deposit

Magdel Combrinck, Lecturer, University of Pretoria

14:10 Numerical integration for reducing degree of

generated noise

Solomon Lephoto, Student, University of Pretoria

14:30 Effects of uneven terrain on forward modeled

TDEM data

Josphat Mahanyele, Student, University of Pretoria

14:50 The development of low temperature SQUID

systems for the geosciences

Tiaan le Roux, Manager Geophysical Research, Anglo

American

15:10 TEA

SESSION 14 ELECTRO- MAGNETICS

15:50 IP effect as an indicator of hydrocarbon

contamination of ground water. A new case study in

South Africa

Valeriya Hallbauer-Zadorozhnaya, Senior Scientist,

Council for Geoscience

16:10 2.5-D inversion of airborne electromagnetic data

Glenn Wilson, Postdoctoral Fellow, CSIRO Division of

Exploration and Mining

16:30 Electromagnetic measurement of coal roof-beam

thickness

Liam Candy, Research Engineer, CSIR Mining

Technology

16:50 Comparison of the capabilities of neutron

tomography with X-ray tomography on geological

samples

Nono Mary Mahlatji, Student, University of the

Witwatersrand

SESSION 13 DRILL (BOREHOLE)

Borehole orientation surveys: Results from a benchmark study

Anton Wolmarans, Section Geophysicist, De Beers

Borehole orientation surveys: Results from a benchmark study

Anton Wolmarans, Section Geophysicist, De Beers

The effect of magnetometer and accelerometer errors on the predicted

trajectories of boreholes surveyed by EMS instruments

Wessel van Brakel, Research Engineer, University of Stellenbosch

Recommendations for wire-line calipers

Reece van Buren, Geophysicist, De Beers

15:10 TEA

SESSION 15 SEISMICS

Hybrid velocity modeling for depth imaging: Examples from offshore

Gabon

Michael Schoeman, Manager Depth Imaging, Geophysical Development

Corporation

3D surface-related multiple removal, a hybrid approach

Neil Hargreaves, Senior Research Geophysicist, Veritas

DGC

Application of high-resolution 3D seismic to mine planning in platinum

shallow mines

Eric Gillot, Area Geophysicist, CGG

Hard layer investigation at Namakwa Sands

Kazek Trofimzcyk, Section Geophysicist, Anglo American

FRIDAY 16 SEPTEMBER

SESSION 16 MAGNETO-TELLURICS

09:10 Comparison of the electromagnetic structure of

Archean cratons

Alan Jones, Senior Professor, Dublin Institute for

Advanced Studies

09:30 Electrical anisotropy across southern Africa derived

from MT studies and compared with seismic

anisotropy results

Mark Hamilton, Student, University of the

Witwatersrand & Dublin Institute for Advanced Studies

09:50 Application of wavelet transform de-noising

techniques to geophysical data

Janine Cole, Geophysicist, Council for Geoscience

10:10 Titan-24: the application of distributed array

technology to geological mapping and target definition

Simon John Bate, Managing Director, Quantec

Geoscience Africa

10:30 TEA

SESSION 18 MULTIDISCIPLINARY

10:50 Geophysical characterisation and delineation of the

AK6 kimberlite

Anre Vorster, Manager Geophysics, De Beers

11:10 Contributions to the gravity field of Southern Africa

from crustal thickness variations and mantle seismic

velocity variations

Susan Webb, Lecturer, University of the Witwatersrand

11:30 The use of binary encoding in the identification of

rock types from low level airborne near-infra-red

measurements

Edgar Stettler, Principle Scientist, Council for

Geoscience

11:50 Visibility filtering of potential field data

Gordon Cooper, Associate Professor, University of the

Witwatersrand

SESSION 17 SEISMICS

Total volume interpretation: A holistic approach to seismic structure

and reservoir characterization

Charles Thomas, Business Development Manager, Halliburton Digital &

Consulting Solutions

Acoustic / Chirp surveys applied on Coal (A world first?)

Stephanus Johannes du Plessis, Divisional Geophysicist, Anglo American

Electric and electromagnetic methods: an opportunity to enhance the

seismic reflection tool

Charles Boulanger, Manager for Subsurface methods, CGG

Simultaneous inversion of pre-stack seismic data

Brian Russell, Vice President, Veritas DGC

10:30 TEA

12:30 CHAIRMAN CLOSING

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download