发明申请
- 专利标题: Nuclear Magnetic Resonance Tool With Movable Magnets
- 专利标题(中): 具有可移动磁铁的核磁共振工具
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申请号: US13288508申请日: 2011-11-03
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公开(公告)号: US20120126809A1公开(公告)日: 2012-05-24
- 发明人: Tim Hopper , Luis E. Depavia , Yi-Qiao Song , David T. Oliver
- 申请人: Tim Hopper , Luis E. Depavia , Yi-Qiao Song , David T. Oliver
- 主分类号: G01V3/32
- IPC分类号: G01V3/32 ; G01R33/44
摘要:
Methods and systems are provided that enable logging while drilling NMR measurements to be made with a tool having magnets with positions adjustable or movable relative to each other. Such movement can affect the depth of investigation of the NMR tool. A variety of moving assemblies can be used to effectuate the movement, which can be performed either at the surface or downhole. The tool also can include a magnetically permeable member to control the magnetic field gradient.
公开/授权文献
- US08860413B2 Nuclear magnetic resonance tool with movable magnets 公开/授权日:2014-10-14