发明授权
US08788207B2 Precise borehole geometry and BHA lateral motion based on real time caliper measurements
有权
基于实时卡尺测量精确的井眼几何和BHA横向运动
- 专利标题: Precise borehole geometry and BHA lateral motion based on real time caliper measurements
- 专利标题(中): 基于实时卡尺测量精确的井眼几何和BHA横向运动
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申请号: US13194179申请日: 2011-07-29
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公开(公告)号: US08788207B2公开(公告)日: 2014-07-22
- 发明人: Jianyong Pei , Thomas Dahl , John Macpherson
- 申请人: Jianyong Pei , Thomas Dahl , John Macpherson
- 申请人地址: US TX Houston
- 专利权人: Baker Hughes Incorporated
- 当前专利权人: Baker Hughes Incorporated
- 当前专利权人地址: US TX Houston
- 代理机构: Cantor Colburn LLP
- 主分类号: E21B47/08
- IPC分类号: E21B47/08
摘要:
Disclosed is a method for estimating a geometry of a borehole penetrating the earth. The method includes: performing a plurality of borehole caliper measurements with N transducers at a plurality of times, wherein for each time a measurement set comprises measurements made by the N transducers at that time; dividing a cross-section of the borehole into S sectors; obtaining an estimate of the borehole geometry by connecting representative radius points in adjacent sectors; displacing each measurement set according to a displacement vector related to an offset of each measurement set from the estimated geometry if the displacement vector exceeds a selection criterion; iterating the obtaining an estimate of the borehole geometry and the displacing each measurement set based on a latest displacement vector; and providing a latest obtained estimate as the geometry of the borehole when all of the displacement vectors no longer exceed the selection criterion for the displacing.