The South Pass 49 field is located near the mouth of the Mississippi River in approximately 400 feet of water on OCS blocks South Pass 33, 48, and 49. The field was discovered by Gulf Oil Company in 1974 and has produces in excess of 115 MMBOE to date. The field produces from Lower Pliocene sands, which consist of the Discorbis 20 through Discorbis 70 sands, ranging in depths from 7,600 feet to 9,400 feet.
The South Pass 78 complex is located 86 miles southeast of New Orleans in water depths ranging from approximately 140 to 190 feet on four lease blocks. The complex was discovered in 1972 by Pennzoil Energy Co. and has produced in excess of 240 MMBOE to date. The field produces from a 68 stacked oil and gas reservoir, with sands ranging in depths of -3,000 to 15,300 feet. The field is dominated by a large piercement salt dome, with its shallowest penetration being in the southwest corner of block 57. Hydrocarbons are trapped in the field by a combination of faulting and/or complex stratigraphy associated with the reservoir sands. The reservoirs range in age from Lower Pleistocene to Upper Miocene.