Chinese offshore oil and gas company CNOOC Ltd. said on Feb. 6 production at its Stampede deepwater oil and gas field in the U.S. Gulf of Mexico has started.

The facility is designed for a gross topside processing capacity of about 80,000 barrels of oil per day, 40 million standard cubic feet of natural gas per day, and 100,000 barrels of water injection capacity per day, it said.

Subsidiaries of CNOOC, Hess Corp., Chevron Corp. and Statoil ASA each have a 25% stake in the project, while Hess is the operator.