发明公开
EP2576970A2 GATE VALVE, METHOD FOR RETURNED DRILLING MUD PRESSURE CONTROL AND/OR WELL KILLING, AND USES OF A GATE VALVE
有权
滑阀，压力控制方法回到导向孔冲洗和/或BOHRLOCHTOTPUMPEN，以及滑阀的使用
- 专利标题： GATE VALVE, METHOD FOR RETURNED DRILLING MUD PRESSURE CONTROL AND/OR WELL KILLING, AND USES OF A GATE VALVE
- 专利标题（中）： 滑阀，压力控制方法回到导向孔冲洗和/或BOHRLOCHTOTPUMPEN，以及滑阀的使用
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申请号： EP11727411.8申请日： 2011-06-03
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公开(公告)号： EP2576970A2公开(公告)日： 2013-04-10
- 发明人: ROLLAND, Nils Lennart
- 申请人： Statoil Petroleum AS
- 申请人地址： 4035 Stavanger NO
- 专利权人： Statoil Petroleum AS
- 当前专利权人： Statoil Petroleum AS
- 当前专利权人地址： 4035 Stavanger NO
- 代理机构： Weaver, Richard
- 优先权： NO20100799 20100603
- 国际公布： WO2011151445 20111208
- 主分类号： E21B34/02
- IPC分类号： E21B34/02 ; F16K3/02 ; F16K27/04
摘要：
The present invention relates to a gate valve (10), in particular for returned drilling mud pressure control and/or well killing. The gate valve comprises: a flow passage (14); and a gate member (22) movable for intersecting the flow passage. The gate member includes a gate port (28) which extends from one face (34a) to an opposite face (34b) of the gate member and is alignable with the flow passage for allowing material in the flow passage to pass through the gate member, and a groove or recess (30) is provided in an inner wall (32) of the gate port, the groove or recess extending from the one face to the opposite face of the gate member. The present invention further relates to a method for returned drilling mud pressure control and/or well killing, and uses of a gate valve.
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