发明公开
- 专利标题： Downhole pressure compensator and method of same
- 专利标题（中）： 井下压力补偿器及其方法
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申请号： EP11290384.4申请日： 2011-08-29
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公开(公告)号： EP2565374A1公开(公告)日： 2013-03-06
- 发明人: Gregoire, Jacob , Nguyen-Thuyet, Alain
- 申请人： Services Pétroliers Schlumberger
- 申请人地址： 42, rue Saint Dominique 75007 Paris FR
- 专利权人： Services Pétroliers Schlumberger
- 当前专利权人： Services Pétroliers Schlumberger
- 当前专利权人地址： 42, rue Saint Dominique 75007 Paris FR
- 代理机构： Rzaniak, Martin
- 主分类号： E21B47/01
- IPC分类号： E21B47/01 ; E21B47/06 ; G01L19/06
摘要：
The techniques herein relate to a pressure compensation system for a sensor in a wellbore (106) having a wellbore fluid (111) therein. The system includes a downhole tool (104) and at least one pressure compensator (112) positionable therein. The pressure compensator includes a first compensating fluid section (216) having a first compensating fluid (238) therein, a first pressure compensation section having a first pressure regulation device (226) for adjusting a compensation pressure of the first compensating fluid based on a wellbore pressure of the wellbore fluid, at least one second compensating fluid section (218) having a second compensating fluid (252) therein, and at least one second pressure compensation section having a second pressure regulation device (246) for adjusting a sensor pressure of the second compensating fluid based on the compensation pressure of the first compensating fluid.
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