发明授权
- 专利标题： Method of downhole fluid separation and displacement and a plug utilized therein
- 专利标题（中）： 井下流体分离和移位方法及其中使用的塞子
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申请号： US10058700申请日： 2002-01-29
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公开(公告)号： US06554068B1公开(公告)日： 2003-04-29
- 发明人: Jiten Chatterji , B. Raghava Reddy , Frank Zamora , Roger S Cromwell
- 申请人： Jiten Chatterji , B. Raghava Reddy , Frank Zamora , Roger S Cromwell
- 主分类号： E21B3312
- IPC分类号： E21B3312
摘要：
A method of downhole fluid displacement and a plug utilized in the method according to which the plug is inserted in a pipe between two fluids for separating and displacing one of the fluids. The plug has a specific gravity of less than the fluid above it, so that, after the displacement operation, the plug floats to the top of the latter fluid for recovery.
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