THE MAHOGANY SUBSALT DISCOVERY: A UNIQUE HYDROCARBON PLAY, OFFSHORE LOUISIANA
Published:December 01, 1993
HOLLY HARRISON, DWIGHT ‘CLINT’MOORE, PEGGY HODGKINS, 1993. "THE MAHOGANY SUBSALT DISCOVERY: A UNIQUE HYDROCARBON PLAY, OFFSHORE LOUISIANA", Salt, Sediment and Hydrocarbons, Adam’s Mark Hotel
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The Mahogany subsalt discovery is the petroleum industry’s first commercial subsalt oil development in the Gulf of Mexico. The discovery well tested 7,256 BOPD and 7.3 MMCFD on a 32/64” choke at 7,063 PSI flowing tubing pressure. The primary subsalt reservoir is a high-pressured oil sand with high permeability and porosity and has tremendous deliverability. The field is located 80 miles offshore Louisiana on Ship Shoal South Additions blocks 349/359. The structure is interpreted as a faulted anticline overlain by allochthonous salt. Prestack depth-migrated 3-D seismic data was integrated into a regional geologic model that was based on 2-D time-migrated data. Regionally, the area is characterized by multiple salt sheets, which form a salt canopy sutured east of Mahogany, and several older and deeper sheets are also identified. Subsalt depositional fairways can be approximated by mapping relative salt-induced paleo-bathymetry. Deepwater sand fairways are closely related to salt movements and extend under the salt sheets.