Poster 9: Chalk studies - ebn.nl · Presented at EAGE 2014. Chalk studies by EBN 5 • Identifying...
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www.ebn.nl www.ebn.nl 24 mei 2016 Poster 9: Chalk studies Exploration day Nora Heijnen
Transcript of Poster 9: Chalk studies - ebn.nl · Presented at EAGE 2014. Chalk studies by EBN 5 • Identifying...
www.ebn.nlwww.ebn.nl24 mei 2016
Poster 9: Chalk studies
Exploration dayNora Heijnen
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Chalk fields in the Dutch northern offshore
2
?
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Post mortem analysis
3
71 wells evaluated, only 25% considered valid test for the Chalk
No test
Invalid test
Valid negative test
Valid positive test
35
17
15
4
Presented at EAGE 2014
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Chalk leads
4
>55 untested closures of which >30 in open acreage
STOIIP 10-300 MMbbls each
Possible intra-Chalk structural or stratigraphical traps
Presented at EAGE 2014
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Chalk studies by EBN
5
• Identifying and mapping intra-chalk units and unconformities (Van de Voet, 2015)
• Reconstructing halokinetic development of salt structures (Van Winden, 2015) (poster 6)
• 3D reconstruction – predicting chalk prospects in Chalk (van Straaten, 2016) (poster 6)
• Hydrocarbon show database (Heerema, 2016, ongoing)
• Improved Chalk Group facies and velocity modelling based on well log correlation, Dutch North Sea Basin (ongoing, Van Wingerden)
• Seismic geomorphology of the Chalk in the Netherlands (ongoing)
• Chalk Formation evaluation: identifying similarities and differences in Dutch Chalk wells (EBN internal)
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Intra-Chalk units
6
Thickness Danian [ms]
Thickness Coniancian - Campanian [ms]
Thickness Maastrichtian [ms] Thickness Turonian [ms]
Thickness Cenomenian [ms]
Van de Voet (2015)
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Hydrocarbon show database
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Heerema (2016), ongoing
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Hydrocarbon show database
8
Heerema (2016), ongoing
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The role of Chalk Facies
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HRL-02, 1078.6 meter
Predicted PHI (dec) from wireline loggings
Co
re P
HI (
dec
)
Top
+- 3cm
A12-02
0 0.1 0.2 0.3 0.4 0.5
0.5
0.4
0.3
0.2
0.1
0
Van Wingerden, ongoing
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Chalk geomorphology
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EBN, ongoing
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Chalk reservoir evaluation
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Main data types:
• Well logs
• Well test / PVT data
• Core information (RCA)
• Pressure data
• Biostratigraphic information
• Facies
Only public data is presentedEBN, ongoing
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Chalk reservoir evaluation
12
Main data types:
• Well logs
• Well test / PVT data
• Core information (RCA)
• Pressure data
• Biostratigraphic information
• Facies
Only public data is presentedEBN, ongoing
www.ebn.nlwww.ebn.nl
Chalk reservoir evaluation
13
Main data types:
• Well logs
• Well test / PVT data
• Core information (RCA)
• Pressure data
• Biostratigraphic information
• Facies
Only public data is presentedEBN, ongoing
www.ebn.nlwww.ebn.nl
Chalk reservoir evaluation
14
Main data types:
• Well logs
• Well test / PVT data
• Core information (RCA)
• Pressure data
• Biostratigraphic information
• Facies
Only public data is presentedEBN, ongoing
www.ebn.nlwww.ebn.nl
Poster 9
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