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Fluid overpressure as a control on sandstone reservoir quality in a mechanical compaction dominated setting: Magnolia Field, Gulf of Mexico

Sathar, S.; Jones, S.J.

Fluid overpressure as a control on sandstone reservoir quality in a mechanical compaction dominated setting: Magnolia Field, Gulf of Mexico Thumbnail


Authors

S. Sathar



Abstract

The reservoir quality (porosity and permeability) of deeply buried hydrocarbon reservoir sandstones in sedimentary basins is significantly affected by burial diagenesis. Many deep reservoirs develop anomalous fluid overpressures during burial. Previous studies on the effect of fluid overpressure on reservoir quality in these deep reservoirs have been inconclusive because of the difficulty in constraining the individual contributions of various porosity preserving factors that are simultaneously active in these reservoirs. Owing to its rapid burial and low burial temperatures, the Neogene gravity-flow sandstone reservoirs from the Magnolia Field, Gulf of Mexico, offers a unique opportunity to investigate in isolation the effect of fluid overpressure on reservoir quality. Examination of petrography, pore pressure and routine core analysis datasets showed a positive correlation between high fluid overpressure and enhanced reservoir quality. This study confirms that fluid overpressure preserves reservoir quality in deeply buried sandstone reservoirs in compaction dominated, high sedimentation basin settings.

Journal Article Type Article
Acceptance Date Feb 10, 2016
Online Publication Date Mar 7, 2016
Publication Date Jun 1, 2016
Deposit Date Apr 8, 2016
Publicly Available Date Mar 7, 2017
Journal Terra Nova
Print ISSN 0954-4879
Electronic ISSN 1365-3121
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 28
Issue 3
Pages 155-162
DOI https://doi.org/10.1111/ter.12203
Public URL https://durham-repository.worktribe.com/output/1414779

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Accepted Journal Article (4.9 Mb)
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Copyright Statement
This is the accepted version of the following article: Sathar, S. & Jones, S.J. (2016). Fluid overpressure as a control on sandstone reservoir quality in a mechanical compaction dominated setting: Magnolia Field, Gulf of Mexico. Terra Nova 28(3): 155-162, which has been published in final form at https://doi.org/10.1111/ter.12203. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.






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