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1. 发明公开

EP1082515A1 OFFSHORE DRILLING SYSTEM 有权
标题翻译：海洋钻井系统
公开(公告)号：EP1082515A1
公开(公告)日：2001-03-14
申请号：EP99915060.0
申请日：1999-03-26
申请人： Hydril Company
发明人： PETERMAN, Charles, P. , GOLDSMITH, Riley, G. , MOTT, Keith, C. , PELATA, Kenneth, L. , COLVIN, Kenneth, W.
IPC分类号： E21B7/128
CPC分类号： E21B21/08 , E21B21/001 , E21B21/01 , E21B33/085 , E21B43/36 , E21B2021/006 , F04B19/003 , F04B43/06 , Y10T137/86027 , Y10T137/86059
摘要： A system (10) for drilling a subsea well (30) from a rig (20) through a subsea wellhead below the rig (20) includes a wellhead stack (37) which is mounted on the subsea wellhead. The wellhead stack (37) comprises at least a subsea blowout preventer stack and a subsea diverter (106, 108). A drill string extends from the rig (20) through the wellhead stack (37) into the well (30) to conduct drilling fluid from the rig (20) to a drill bit in the well (30). A riser (52) which has one end coupled to the wellhead stack (37) and another end coupled to the rig (20) internally receives the drill string such that a riser annulus is defined between the drill string and the riser (52). A well annulus (66) extends from the bottom of the well (30) to the subsea diverter (106, 108) to conduct fluid away from the drill bit. A pump has a suction side in communication with the well annulus (66) and a discharge side in communication with the rig (20) and is operable to maintain a selected pressure gradient in the well annulus (66).
摘要翻译：一种用于从钻机（20）穿过钻机（20）下方的海底井口钻探海底井（30）的系统（10）包括安装在海底井口上的井口堆（37）。井口堆（37）包括至少一个海底防喷器堆和海底分流器（106,108）。钻柱（20）从井架（20）穿过井口堆（37）延伸到井（30）中，以将钻井液从井架（20）引导到井（30）中的钻头。其一端联接到井口堆（37）并且另一端联接到钻机（20）的立管（52）在内部接收钻柱，使得立管环被限定在钻柱和立管（52）之间。井环（66）从井（30）的底部延伸到海底分流器（106,108）以引导流体远离钻头。泵具有与井环（66）连通的吸入侧和与钻机（20）连通的排出侧，并且可操作以维持井环空（66）中的选定压力梯度。

2. 发明授权

EP1082515B1 OFFSHORE DRILLING SYSTEM 有权
标题翻译：海上钻井系统
公开(公告)号：EP1082515B1
公开(公告)日：2005-03-09
申请号：EP99915060.0
申请日：1999-03-26
申请人： Hydril Company
发明人： PETERMAN, Charles, P. , GOLDSMITH, Riley, G. , MOTT, Keith, C. , PELATA, Kenneth, L. , COLVIN, Kenneth, W.
IPC分类号： E21B7/128 , E21B21/00
CPC分类号： E21B21/08 , E21B21/001 , E21B21/01 , E21B33/085 , E21B43/36 , E21B2021/006 , F04B19/003 , F04B43/06 , Y10T137/86027 , Y10T137/86059
摘要： A system (10) for drilling a subsea well (30) from a rig (20) through a subsea wellhead below the rig (20) includes a wellhead stack (37) which is mounted on the subsea wellhead. The wellhead stack (37) comprises at least a subsea blowout preventer stack and a subsea diverter (106, 108). A drill string extends from the rig (20) through the wellhead stack (37) into the well (30) to conduct drilling fluid from the rig (20) to a drill bit in the well (30). A riser (52) which has one end coupled to the wellhead stack (37) and another end coupled to the rig (20) internally receives the drill string such that a riser annulus is defined between the drill string and the riser (52). A well annulus (66) extends from the bottom of the well (30) to the subsea diverter (106, 108) to conduct fluid away from the drill bit. A pump has a suction side in communication with the well annulus (66) and a discharge side in communication with the rig (20) and is operable to maintain a selected pressure gradient in the well annulus (66).

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