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Drilling riser joints with buoyancy modules. A drilling riser is a conduit that provides a temporary extension of a subsea oil well to a surface drilling facility. Drilling risers are categorised into two types: marine drilling risers used with subsea blowout preventer (BOP) and generally used by floating drilling vessels; and tie-back drilling risers used with a surface BOP and generally ...
The manufacturing operations of the company at 2nd and Girard Streets in Houston, Texas, where it was located in the 1910s. Today, the site of the building is on the campus of University of Houston–Downtown. A February 1914 advertisement for the Sharp-Hughes Tool Company in Fuel Oil Journal.
NOV Inc., formerly National Oilwell Varco, is an American multinational corporation based in Houston, Texas.It is a worldwide provider of equipment and components used in oil and gas drilling and production operations, oilfield services, and supply chain integration services to the upstream oil and gas industry.
Grant Prideco, Inc. is a supplier of drill pipe and drill stem accessories headquartered in Houston, Texas.Since 2008, it has been a subsidiary of energy services company NOV Inc. Grant Prideco was included on the Fortune magazine top 1000 largest corporations for several years in the mid-2000s [1] [2] and through the 1990s and early 2000s was the world's largest oilfield drill pipe supplier.
Jackup platforms have been the most popular and numerous of various mobile types in existence. The total number of jackup drilling rigs in operation numbered about 540 at the end of 2013. The tallest jackup rig built to date is the Noble Lloyd Noble, completed in 2016 [3] with legs 214 metres (702 feet) tall. [4]
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 .
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Pride International, Inc. was an offshore oil drilling company headquartered in Houston, Texas. As of February 2011, it operated 26 drilling rigs. [1] In May 2011, it was acquired by Ensco (now Valaris Limited).