Mississippi Canyon 194 (Cognac) is located 12 miles southeast of the mouth of the Mississipi River in 1024 feet of water. The field extends over four 8 CS blocks acquired by Shell, Amoco, and partners in the March, 1974 Federal lease sale. Evaluation drilling started in 1975 and a 62-slot, two-rig platform was installed in October, 1978. The initial development consisted of 61 wells drilled between 1978-82. "Produce-while-drilling" production began in 1979 with permanent facilities installed in 1982.

Production peaked during 1984 at 83,000 BOPD and 130 MMCFPD. Prior to shut-in for redevelopment drilling in 1989, production declined to 11,000 BOPD and 45 MMCFPD. Cumulative production at that time was 120 MMBO and 220 MMCF. A 20-well redevelopment drilling program was executed during 1989-91. Production after the re-development peaked at 28,000 BOPD and 75 MMCFPD.

Preparation for the redevelopment began in 1987 with acquisition of a 3-D seismic survey. The interpreted survey indicated targets in new fault blocks as well as undrained areas in developed reservoirs. The seismic leads were supplemented by engineering and geological concepts on drainage and sand distribution in the field. The integration of geophysical, geological, and engineering data and concepts in planning and executing the redevelopment program is the subject of this presentation.

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