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公开(公告)号:EP2565374A1
公开(公告)日:2013-03-06
申请号:EP11290384.4
申请日:2011-08-29
CPC分类号: E21B47/06 , E21B47/011 , E21B49/00
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.
摘要翻译: 本文的技术涉及用于井眼(106)中的传感器的压力补偿系统,所述井眼(106)中具有井眼流体(111)。 该系统包括井下工具(104)和可定位在其中的至少一个压力补偿器(112)。 所述压力补偿器包括其中具有第一补偿流体(238)的第一补偿流体部分(216),具有第一压力调节装置(226)的第一压力补偿部分(226),所述第一压力调节装置用于基于井眼调节第一补偿流体的补偿压力 井筒流体的压力,其中具有第二补偿流体(252)的至少一个第二补偿流体段(218)以及具有第二压力调节设备(246)的至少一个第二压力补偿段,所述第二压力补偿段用于调节井筒流体的传感器压力 基于第一补偿流体的补偿压力计算第二补偿流体。