Paleozoic Plays of NW Europe Conference London, 26 ... - EBN
[Pages:22]Paleozoic Plays of NW Europe Conference ? London, 26-27 May 2016
Zechstein Carbonates revisited
New Insights and New Chances for an Old Play
Bastiaan Jaarsma* (EBN), Kees Geel (TNO) and Walter Eikelenboom (EBN)
Marsden Bay (just South of Newcastle)
1
It started a while ago...
First discovery ever in The Netherlands in Zechstein in 1923 ? well Corle-1
2
Zechstein carbonates in the Southern Permian Basin
E&P and UGS in Zechstein carbonates across the basin at present
Auk & Argyll oil fields (ZE1)
Active exploration
A6-A gas field
HC shows, active exploration (ZE2)
Outcrops near Durham; E&P in onshore / offshore
ZE3 (Platten) dolomite gas field trend (Hewett, Wissey,
P06), Alkmaar UGS
Gas produced from Zechstein in K-blocks
German gas fields (ZE2)
Friesland gas fields (ZE2/ZE3)
Rehden UGS (ZE3)
Drenthe gas fields (ZE2)
Oil and gas fields (ZE2)
Zechstein-2 carbonate distribution and facies map from Geluk (2007)
3
Zechstein carbonates in the Southern Permian Basin
review by EBN and TNO to revise map in dutch northern offshore
literature, well data, seismic and outcrops MSc interns Jan Schneider (VU), Joke Loos
(KUL), Sjoerd Tolsma (UU) and Coen Paulides (TUD, ongoing)
Zechstein-2 carbonate distribution and facies map from Geluk (2007)
4
SPB Zechstein stratigraphy and sequences
Zechstein shelf-basin profile in SPB from Taylor (1984) in Glennie (1990)
Z3C Z2C Z1C
Zechstein lithostratigraphy and depositional sequences for Durham Province, from Catuneanu et al. (2011) after Tucker (1991)
5
Reviewing Zechstein-1 carbonates distribution
core material and reports from 5 wells ? idealized Z1 sequence shown below
Transition from shallow marine lst to algal mat facies consists of oncoids
high-perm streak with vugs
Z2 Stinkschiefer (basinal facies)
Z1 Anhydrite nodules
Z1 Algal mats
Z1 Shallow marine lst
Z1 Kupferschiefer
The Z1C in the Cleaver bank area deposited on a
platform, with potential for a good reservoir rock
6
Zechstein-2 carbonates depositional model
wells indicate presence of carbonate buildup in large part of study area
Daigram after Geluk (2007) and Slowakiewicz et al. (2013)
7
Zechstein in seismic ? E02-02 buildup
presence of carbonate buildups in study area confirmed in new seismic
W
Tertiary E
Chalk
Basal Zechstein unit
Pre-Zechstein
1000 m
DEF survey seismic courtesy Spectrum ASA 8
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