发明授权
- 专利标题: Apparatus and measuring stress in a subterranean formation
- 专利标题(中): 装置和测量地层中的应力
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申请号: US13392301申请日: 2009-08-31
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公开(公告)号: US08978461B2公开(公告)日: 2015-03-17
- 发明人: Gang Li , Kenneth E. Williams
- 申请人: Gang Li , Kenneth E. Williams
- 申请人地址: US TX Houston
- 专利权人: Halliburton Energy Services, Inc.
- 当前专利权人: Halliburton Energy Services, Inc.
- 当前专利权人地址: US TX Houston
- 国际申请: PCT/US2009/055484 WO 20090831
- 国际公布: WO2011/025498 WO 20110303
- 主分类号: E21B49/00
- IPC分类号: E21B49/00 ; E21B47/00
摘要:
A method and apparatus for determining a stress field in a subterranean formation include deploying a stress measurement tool on a tubular string, opening at least three fractures in three different radial directions in the subterranean formation, and closing the at least three fractures. The at least three fractures are reopened while measuring stress and strain conditions. From the reopening, a tangential stress component for each of the at least three fractures is determined. From the tangential stress components and radial directions of the at least three fractures, the stress field of the subterranean formation is determined.