Invention Grant
US09243717B2 Gate valve, method for returned drilling mud pressure control and/or well killing, and uses of a gate valve
有权
闸阀，返回钻井泥浆压力控制和/或井杀灭的方法以及闸阀的使用
- Patent Title: Gate valve, method for returned drilling mud pressure control and/or well killing, and uses of a gate valve
- Patent Title (中): 闸阀，返回钻井泥浆压力控制和/或井杀灭的方法以及闸阀的使用
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Application No.: US13701122Application Date: 2011-06-03
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Publication No.: US09243717B2Publication Date: 2016-01-26
- Inventor: Nils Lennart Rolland
- Applicant: Nils Lennart Rolland
- Applicant Address: NO Stavanger
- Assignee: STATOIL PETROLUEM AS
- Current Assignee: STATOIL PETROLUEM AS
- Current Assignee Address: NO Stavanger
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: NO20100799 20100603
- International Application: PCT/EP2011/059202 WO 20110603
- International Announcement: WO2011/151445 WO 20111208
- Main IPC: F16K3/00
- IPC: F16K3/00 ; E21B21/10 ; F16K3/02
Abstract:
A gate valve is provided for returned drilling mud pressure control and/or well killing. The gate valve includes a flow passage; and a gate member movable for intersecting the flow passage. The gate member includes a gate port which extends from one face to an opposite face 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 is provided in an inner wall of the gate port, the groove or recess extending from the one face to the opposite face of the gate member. A method is provided for returned drilling mud pressure control and/or well killing, and uses of a gate valve.
Public/Granted literature
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