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A jackup rig is a barge fitted with long support legs that can be raised or lowered. The jackup is maneuvered (self-propelled or by towing) into location with its legs up and the hull floating on the water. Upon arrival at the work location, the legs are jacked down onto the seafloor. Then "preloading" takes place, where the weight of the barge ...
Jackup rigs in Longkou, China. Jack-up Mobile Drilling Units (or jack-ups), as the name suggests, are rigs that can be jacked up above the sea using legs that can be lowered, much like jacks. These MODUs (Mobile Offshore Drilling Units) are typically used in water depths up to 120 metres (390 ft), although some designs can go to 170 m (560 ft ...
When offshore drilling moved into deeper waters of up to 30 metres (98 ft), fixed platform rigs were built, until demands for drilling equipment was needed in the 100 feet (30 m) to 120 metres (390 ft) depth of the Gulf of Mexico, the first jack-up rigs began appearing from specialized offshore drilling contractors. [11]
Valaris Limited (previously ENSCO-Rowan plc) is an offshore drilling contractor headquartered in Houston, Texas, and incorporated in Bermuda. It is the largest offshore drilling and well drilling company in the world, and owns 52 rigs, including 36 offshore jackup rigs, 11 drillships, and 5 semi-submersible platform drilling rigs. [1]
This type of platform can be installed in water depth up to 500 meters (1,600 feet). Jack-Up Rig – Jack-up rigs are mobile units with a floating hull that can be moved around; once they arrived at the desired location, the legs are lowered to the seafloor and locked into place. Then the platform is raised up out of the water.
Seadrill is an offshore drilling contractor providing worldwide offshore drilling services to the oil and gas industry. Its primary business is the ownership and operation of drillships, semi-submersible rigs, and jack-up rigs for operations in shallow to ultra-deep water in both benign and harsh environments. It provides a contract-based ...
The company has delivered its latest offshore jack-up rig, 'Dukhan,' which started operations in November 2014. In 2014, GDI signed contracts with shipyards in Singapore and Qatar to build a new jack-up offshore drilling rig ('Halul') and a Lift boat ('Al-Safliya'), respectively.
Douglas Complex. The Douglas Complex is a 54-metre (177 ft) high system of three linked platforms in the Irish Sea, 24 kilometres (15 mi) [1] off the North Wales coast. The Douglas oil field was discovered in 1990, and production commenced in 1996. Now operated by Eni, the complex consists of the wellhead platform, which drills into the seabed ...