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The first semi-submersible floating production platform was the Argyll FPF converted from the Transworld 58 drilling semi-submersible in 1975 for the Hamilton Brothers North Sea Argyll oil field. As the oil industry progressed into deeper water and harsh environments, purpose-built production semi-submersible platforms were designed.
Atlantis PQ is a BP and BHP joint venture semi-submersible oil platform on permanent location over the Green Canyon Atlantis Oil Field in deepwater Gulf of Mexico, 190 mi (310 km) south of New Orleans. The "PQ" identifies the platform as being a production facility with crew quarters. [2]
The Songa Mercur is a semi-submersible drilling rig designed by Friede & Goldman, ex Shelf 10 and La Muralla. It is capable of drilling in water up to a depth of 1,200 feet (370 m). [2] [3] In May 2006, Songa Offshore signed a nine-month contract with Chevron to use the rig in Australia. [4]
Petrobras 36 (P-36) was a floating semi-submersible oil platform. Prior to its sinking on 20 March 2001, it was the largest in the world. [3] It was owned by Petrobras, a semi-public Brazilian oil company headquartered in Rio de Janeiro. [4] The cost of the platform was US$350 million (currently US$602 million). [5]
Semi-Submersible platforms have pontoons and columns, typically two parallel spaced apart pontoons with buoyant columns upstanding from those pontoons to support a deck. Some of the semi-submersible vessels only have a single caisson, or column, usually denoted as a buoy while others utilize three or more columns extended upwardly from buoyant ...
Semi-submersible types are used for petroleum exploration in deep waters. They are fixed in place by column tubes, piles, or other bracing systems. The pontoon-type VLFS platform rests on the water surface and is intended for deployment in calm waters such as a cove, a lagoon or a harbor. Its basic element is a simple box structure; it usually ...
It operates 15 drilling rigs including 11 semi-submersible platforms and 4 drillships. [1] In September 2024, Noble Corporation completed its acquisition of the Texas firm. [ 2 ]
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