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Macaroni Subsea System
Macaroni is located in Garden Banks 602 in the Gulf of Mexico about 225 miles southwest of New Orleans and 235 miles southeast of Houston in approximately 3,700 feet of water. The lease was acquired in OCS Lease Sale 122 held in August 1989.
Exploration and Discovery
Shell is the operator with a 51% interest. AGIP has a 34% interest and Sante Fe Snyder has a 15% interest in the project. The discovery well was drilled in late 1995 using the Transocean Rather. Two additional appraisal wells were drilled in 1996 and 1997.
The target reserves are Pliocene sands at depths between 20,500 and 24,000 feet subsea. The average API gravity of the crude is about 40 degrees and sulfur is less than 1%.
Development Plans
Shell announced in March 1998 its plans to develop Macaroni utilizing a subsea system tied back 12 miles to the Auger TLP on Garden Banks Block 426 in 2,860 feet of water.
The Macaroni subsea system consists of three subsea satellite wells clustered around a four-well subsea manifold in Garden Banks Block 602. Production flows through dual 6-inch by 10-inch pipe-in-pipe flowlines to the Auger TLP for processing.
FMC | Subsea trees, manifold, & jumpers |
|---|---|
| Kongsberg Offshore | Control system |
| Alcatel | Electro-hydraulic umbilical fabrication |
| J Ray McDermott | Flowline installation |
| Master Flo | Subsea Chokes |
| Stolt Comex Seaway | Umbilical installation |
| Intec | Engineering services |
| J Ray McDemott | Manifold Installation |
Transocean Richardson and Noble Paul Romano semisubmersibles drilled and completed the development wells.
Production
Production began August 23, 1999.