发明授权
- 专利标题: Method for analysis of pressure response in underground formations
- 专利标题(中): 地下地层压力响应分析方法
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申请号: US11914219申请日: 2005-05-10
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公开(公告)号: US08132453B2公开(公告)日: 2012-03-13
- 发明人: Raj Kumar Michael Thambynayagam , Jeffrey Spath , Raj Banerjee , David Brian White , Peter Allan Goode
- 申请人: Raj Kumar Michael Thambynayagam , Jeffrey Spath , Raj Banerjee , David Brian White , Peter Allan Goode
- 申请人地址: US TX Sugar Land
- 专利权人: Schlumberger Technology Corporation
- 当前专利权人: Schlumberger Technology Corporation
- 当前专利权人地址: US TX Sugar Land
- 国际申请: PCT/GB2005/001820 WO 20050510
- 国际公布: WO2006/120366 WO 20061116
- 主分类号: E21B49/08
- IPC分类号: E21B49/08 ; E21B47/06
摘要:
A reservoir pressure in an underground formation surrounding a well is analyzed based on a direct measurement of the pressure at the wall of the well using the permeability of mud cake on the wall of the well in the region in which the pressure measurement is made; determining the thickness of mud cake on the well of the well; determining the hydrostatic pressure in the well in the region in which the pressure measurement is made; calculating a pressure decay index from the mud cake permeability and thickness, the hydrostatic pressure and the measured pressure; and using the pressure decay index to analyze the measured pressure to derive the reservoir pressure.
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