Project Profile
Value: Undisclosed
Location: Garden Banks quadrant, block 244, Gulf of Mexico, USA
Production: 70 million standard cubic feet of natural gas and 20,000 barrels of oil
equivalent (per day)
Water Depth: 670m (2,200ft)
The Cottonwood field is located in the Garden Banks quadrant, block 244, in the US sector of the Gulf of Mexico. Cottonwood is the operator\'s first subsea development project in the Gulf of Mexico. It is also the first field in deepwaters developed and put into production by Petrobras, as operator, outside of Brazil. The wellstream is primarily gas.
The Cottonwood discovery was drilled in June 2001 by Kerr-McGee as operator, with Petrobras holding a 33.3% working interest. Petrobras acquired 100% interest in the field in December 2004. The field development consists of a two-well, long-distance subsea tieback via 27km (17 miles) of 152mm (6in) pipeline to the W&T-operated and Enterprise-owned fixed platform in East Cameron block 373. The two trees lie in water depths of 670m (2,200ft). Petrobras America selected FMC technologies to supply subsea drilling and production equipment for the project. A keynote of the field is the high pressures involved. The wellheads, therefore, feature 15,000psi enhanced horizontal subsea trees with a tree bore size of 5in x 2in. FMC also supplied pipeline end terminations and production control system.
In 2007, first well was brought online. The gas flow rate is being increased initially to 40 million standard cubic feet a day (1.1 million cubic metres a day). A second well raised the field production to 70 million standard cubic feet of natural gas a day (2.0 million cubic metres a day), combined with oil condensate production that will take the field production to 20,000 barrels of oil equivalent a day.
Operators:
Petrobras: Operator with 100% interest
Contractors:
FMC: Supply subsea drilling and production equipment for the project, and pipeline end terminations and production control system
Oceaneering Multiflex: Manufacturing of the umbilicals