发明授权
- 专利标题： Creating an underbalance condition in a wellbore
- 专利标题（中）： 在井筒中产生不平衡状况
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申请号： US10776153申请日： 2004-02-11
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公开(公告)号： US06874579B2公开(公告)日： 2005-04-05
- 发明人: Ashley B. Johnson , Lawrence A. Behrmann , Wenbo Yang , Fokko Harm Cornelis Doornbosch
- 申请人： Ashley B. Johnson , Lawrence A. Behrmann , Wenbo Yang , Fokko Harm Cornelis Doornbosch
- 申请人地址： US TX Sugar Land
- 专利权人： Schlumberger Technology Corp.
- 当前专利权人： Schlumberger Technology Corp.
- 当前专利权人地址： US TX Sugar Land
- 代理机构： Trop, Pruner & Hu PC
- 代理商 Jaime A. Castaño; Brigitte Echols
- 主分类号： E21B43/117
- IPC分类号： E21B43/117 ; E21B21/00 ; E21B34/00 ; E21B37/08 ; E21B43/04 ; E21B43/11 ; E21B43/119 ; E21B43/26 ; E21B49/08 ; F42B3/02 ; F42D5/045 ; E21B43/116 ; E21B29/00
摘要：
An apparatus and method of perforating and surging a section of the wellbore includes running a perforating gun into the well on a string having an isolation valve above the perforating gun, closing the valve, and perforating the well with the isolation valve closed so that the formation is isolated from the well surface. An underbalance pressure is provided above the isolation valve, and then, the isolation valve is opened to surge the formation.
公开/授权文献
- US20040159432A1 Creating an underbalance condition in a wellbore 公开/授权日：2004-08-19
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