- 专利标题: Electromagnetic borehole surveying method
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申请号: US09810426申请日: 2001-03-19
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公开(公告)号: US20020130663A1公开(公告)日: 2002-09-19
- 发明人: Arthur F. Kuckes , Rahn Pitzer , Herbert J. Susmann
- 主分类号: G01V003/08
- IPC分类号: G01V003/08 ; G01V003/10
摘要:
An apparatus and method for surveying the path of a borehole includes two single-axis field sensors located at a radius centered at a fixed location. Guide wires are located along the earth's surface above the prescribed borehole path and the known electromagnetic field produced by current in the guide wires are detected by the sensors. Values of X and Y vectors at multiple locations on a spherical surface at the radial distance of the sensors are calculated and compared with measured values to define the location of the sensors on the spherical surface to permit the lateral spacing between the sensors and the desired borehole path to be determined.
公开/授权文献
- US06466020B2 Electromagnetic borehole surveying method 公开/授权日:2002-10-15