发明名称 |
OFFSHORE-BOHRSYSTEM |
摘要 |
<p>A system for drilling a subsea well from a rig through a subsea wellhead below the rig includes a wellhead stack which is mounted on the subsea wellhead. The wellhead stack includes at least a subsea blowout preventer stack and a subsea diverter. A drill string extends from the rig through the wellhead stack into the well to conduct drilling fluid from the rig to a drill bit in the well. A riser which has one end coupled to the wellhead stack and another end coupled to the rig internally receives the drill string such that a riser annulus is defined between the drill string and the riser. A well annulus extends from the bottom of the well to the subsea diverter to conduct fluid away from the drill bit. A pump has a suction side in communication with the well annulus and a discharge side in communication with the rig and is operable to maintain a selected pressure gradient in the well annulus.</p> |
申请公布号 |
DE69924108(D1) |
申请公布日期 |
2005.04.14 |
申请号 |
DE1999624108 |
申请日期 |
1999.03.26 |
申请人 |
HYDRIL CO., HOUSTON |
发明人 |
PETERMAN, P.;GOLDSMITH, G.;MOTT, C.;PELATA, L.;COLVIN, W. |
分类号 |
E21B21/00;E21B21/01;E21B21/08;E21B33/08;E21B43/36;F04B19/00;F04B43/06;(IPC1-7):E21B7/128 |
主分类号 |
E21B21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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