Regional Report - Gulf of Mexico: Automated software workflow optimizes Lower Tertiary reservoirs ///
The deepwater Lower Tertiary play is an extension of the established, onshore, Lower Tertiary Wilcox trend that runs along the Gulf Coast in southern Texas and Louisiana. Onshore, it is primarily a gas play, while in the deepwater Gulf of Mexico (GOM), the play targets the subsalt, Paleogene oil formation. This trend is 175 mi offshore and about 80 mi wide by 300 mi long. Most activity takes place in the Alaminos Canyon, Keathley Canyon and Walker Ridge areas.
The trend is generally characterized by older sediments with lower porosities, ultra-deep water depths, and high bottomhole pressures (BHPs). For this trend, water depths range from 4,000 to 10,000 ft, and target reservoirs lie in depths between 25,000 and 35,000 ft. The reservoirs are thick, typically exceeding 1,000 ft gross, with high sand content [Halliburton 2011].
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