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1. 发明申请

WO2011128611A2 SUBSEA WELLHEAD PROVIDING CONTROLLED ACCESS TO A CASING ANNULUS 审中-公开
标题翻译： SUBSEA WELLHEAD提供控制访问一个CASING ANNULUS
公开(公告)号：WO2011128611A2
公开(公告)日：2011-10-20
申请号：PCT/GB2011/000401
申请日：2011-03-22
申请人： AKER SUBSEA LIMITED , WILLOUGBY, Daniel, Alexander
发明人： WILLOUGBY, Daniel, Alexander
IPC分类号： E21B33/035
CPC分类号： E21B33/00 , E21B33/035 , E21B33/043 , E21B33/143 , E21B34/04
摘要： A subsea wellhead assembly includes a wellhead body (1) which disposed to support an isolation sleeve (39) for a production tree and to support below the isolation sleeve a production casing hanger (21) for a production casing string. The body also supports a second casing string outside the production casing string whereby to form an annulus (22) between the casing strings. The body includes a passageway (25) which is in communication with the annulus near a lower end of the body and extends upwardly within the wall of the body towards the upper end of the body. A valve (27) is accommodated in the upper part of the body and provides controlled communication between the passageway (25) and a port (43) which can be coupled to the isolation sleeve. The valve is controllable from a production tree and in particular is moveable between an open position and a closed position in response to fluid pressure applied to the valve from a production tree by way of the isolation sleeve.
摘要翻译：海底井口组件包括井口体（1），其设置成支撑用于生产树的隔离套筒（39）并且在隔离套筒下方支撑用于生产套管柱的生产套管悬挂器（21）。主体还支撑在生产套管柱之外的第二套管柱，从而在套管柱之间形成环（22）。主体包括通道（25），该通道（25）与主体的下端附近的环形空间连通，并且在主体的壁内朝向身体的上端向上延伸。阀门（27）容纳在主体的上部，并且在通道（25）和可连接到隔离套筒的端口（43）之间提供受控的连通。该阀可从生产树中控制，并且特别地可响应于通过隔离套筒从生产树施加到阀的流体压力而在打开位置和关闭位置之间移动。

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