The facilities

A manned drilling and production platform on an eight-leg steel jacket in about 300 ft of water on the U.S. Gulf of Mexico shelf. A platform rig on the drilling deck, its derrick reaching about 290 ft above the sea, drills new wells while the platform produces. Wells come up through conductors inside the jacket to dry trees on the cellar deck; separators, gas dehydration and compression clean the oil and gas before they leave by pipeline; gas turbines make the power; quarters for 96 people and a helideck sit at the far end from the wells.

A floating drilling and production platform in about 3,000 ft of water in the deepwater U.S. Gulf of Mexico. Four 72 ft steel columns on a ring pontoon carry a three-level deck box about 280 ft square. Twelve steel tendons pull the hull down to piled foundations on the seabed, so it hardly heaves and the wells end in dry trees on deck, reached through top-tensioned risers. A platform rig on the upper deck drills and works over the wells. Separators, an electrostatic treater, glycol dehydration and turbine-driven compressors handle about 100,000 barrels of oil and 150 million standard cubic feet of gas a day, which leave by steel catenary risers. Three gas turbine generators make the power; quarters for 150 people with the helideck on top stand at the west end, away from the well bay, the process and the flare.