Title
Focus on shallow gas systems
Author
Verweij, J.M.
Nelskamp, S.
Publication year
2014
Abstract
Recent exploration activities in two of the largest deltas in the world, the still active Nile delta and the Cenozoic Southern North Sea (SNS) deltas, proved the potential of shallow gas resources. However, shallow gas production is still limited due to a lack of understanding of this gas system. For both the Nile and the SNS delta, there is an on-going debate about the origin of the gas. For both settings, the origin of shallow gas may be deep subsurface thermogenic sources, microbial sources in shallower strata, or a mixture of both. The origin of shallow gas was studied in the Dutch SNS delta as part of a comprehensive multidisciplinary workflow developed and applied to enhance the quantitative knowledge and understanding of the shallow gas play in the delta (Ten Veen et al., 2014). Timing and quantification of microbial gas generation in the SNS delta was studied using a combination of different modeling approaches, and included new detailed basal and surface thermal boundary conditions. Modeling results indicate that intra SNS delta deposits are an important source of microbial gas that are able to fill most of the available traps in the Dutch SNS delta.
Subject
Earth / Environmental
PG - Petroleum Geosciences
ELSS - Earth, Life and Social Sciences
Geological Survey Netherlands
Geosciences
Energy / Geological Survey Netherlands
Energy resources
Gases
Risk assessment
Gas systems
Model results
Southern North Sea
Thermal boundary conditions
Petroleum deposits
To reference this document use:
http://resolver.tudelft.nl/uuid:c5aa61be-4493-4832-ad31-362f89a051cb
TNO identifier
520182
Publisher
EAGE Publishing BV
ISBN
9789462820302
Source
1st EAGE Basin and Petroleum Systems Modeling Workshop: Advances in Basin and Petroleum Systems Modeling in Risk and Resource Assessment, 1-5
Document type
conference paper