发明授权
US06378363B1 Method for obtaining leak-off test and formation integrity test profiles from limited downhole pressure measurements
有权
从有限的井下压力测量中获得泄漏测试和地层完整性测试曲线的方法
- 专利标题: Method for obtaining leak-off test and formation integrity test profiles from limited downhole pressure measurements
- 专利标题(中): 从有限的井下压力测量中获得泄漏测试和地层完整性测试曲线的方法
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申请号: US09443537申请日: 1999-11-19
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公开(公告)号: US06378363B1公开(公告)日: 2002-04-30
- 发明人: Jean-Michel Hache , Iain Rezmer-Cooper , Kais Gzara
- 申请人: Jean-Michel Hache , Iain Rezmer-Cooper , Kais Gzara
- 主分类号: E21B4400
- IPC分类号: E21B4400
摘要:
The present invention presents a method that effectively restores the real-time advantage of annular pressure while drilling (APWD) measurements taken during certain drilling operations that require the mud circulation pumps to be turned off (a “pumps-off” condition). APWD data, such as pressure measurements, is obtained from instruments and related electronics within the BHA. APWD data can be measured, stored and even processed in the BHA during a pumps-off condition for subsequent processing or communication of a reduced amount of data to the driller at the surface.
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