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Structural Configuration of a Subsalt Hydrocarbon Trap Aadjacent to a Salt Wall in Green Canyon, GOM
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
The oil field described in this study is located subsalt adjacent to a salt wall in the northern Gulf of Mexico. Data from field development wells are used in conjunction with seismic data to constrain a structural interpretation of the field. The field occurs in a dipping halokinetic sequence (dip magnitudes range from ~20 to overturned). The interpretation indicates that the reservoir sand interval pinches out before intersecting the salt-sediment interface (SSI). Two general populations of sub-seismic scale structures (deformation bands and small offset faults) are observed in core and image logs from wells adjacent to the SSI. One population in which deformation bands and faults trend approximately parallel to the strike of the SSI (observed where the SSI is relatively linear), and one in which these features trend at a high angle to the SSI. The population that trends at a high angle to the SSI occurs in the vicinity of an along strike change in trend of the SSI and an associated change in flap geometry.