发明申请
- 专利标题: Method and Apparatus for Directional Well Logging
- 专利标题(中): 定向测井方法与装置
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申请号: US13128261申请日: 2009-11-23
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公开(公告)号: US20120067644A1公开(公告)日: 2012-03-22
- 发明人: Jaideva Goswami , Brian Clark , Betty Rong , Miguel F. Pabon , Jan S. Morley
- 申请人: Jaideva Goswami , Brian Clark , Betty Rong , Miguel F. Pabon , Jan S. Morley
- 国际申请: PCT/US2009/065463 WO 20091123
- 主分类号: E21B47/02
- IPC分类号: E21B47/02 ; G01V3/30
摘要:
A method and apparatus are provided for making directional measurements toward a formation of different resistivity that is proximate to the borehole, but which is not penetrated by the borehole. The disclosed methods and apparatus include the use of at least one insulated gap and at least one magnetometer positioned within a non-magnetic housing that is disposed within a non-magnetic tubular. An electric current is applied across the insulated gap, which results in current leaking into the surrounding formations. When a formation of contrasting resistivity is proximate to the logging apparatus, the magnetometer detects a secondary magnetic due to the contrasting formation. The direction of the secondary magnetic field can be used to determine the direction to the contrasting formation. The magnitude of the secondary magnetic field can be used to determine the distance position to the contrasting formation.
公开/授权文献
- US09360580B2 Method and apparatus for directional well logging 公开/授权日:2016-06-07
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