发明申请
- 专利标题： METHOD AND APPARATUS FOR SELECTIVE DOWN HOLE FLUID COMMUNICATION
- 专利标题（中）： 选择下孔流体通信的方法和装置
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申请号： US11469255申请日： 2006-08-31
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公开(公告)号： US20080053658A1公开(公告)日： 2008-03-06
- 发明人: David S. Wesson , Kevin R. George , Philip M. Snider
- 申请人： David S. Wesson , Kevin R. George , Philip M. Snider
- 主分类号： E21B43/14
- IPC分类号： E21B43/14 ; E21B43/117
摘要：
Methods and apparatus for perforating a formation in a wellbore without perforating a well bore casing. The methods and apparatus include an external casing perforating device configured so as not to perforate the casing. The interior of the perforating device serves as a fluid flow path between the casing and the formation following perforation and a valve in the casing selectively opens and closes the flow path.