发明授权
US06794875B2 Induction well logging apparatus and method 失效
感应测井仪和方法

  • 专利标题: Induction well logging apparatus and method
  • 专利标题(中): 感应测井仪和方法
  • 申请号: US10151497
    申请日: 2002-05-20
  • 公开(公告)号: US06794875B2
    公开(公告)日: 2004-09-21
  • 发明人: Robert W. Strickland
  • 申请人: Robert W. Strickland
  • 主分类号: G01V310
  • IPC分类号: G01V310
Induction well logging apparatus and method
摘要:
A coil arrangement and method of collecting and processing data in induction logging of wells is disclosed. The coil arrangement includes three essentially identical coils made of elliptical conductive loops lying in a plane tilted from the axis of the logging tool. Each coil is centered on the same point in space. Data are preferably collected by using the coil arrangement for both transmitter and receiver, and transmitting at three closely-spaced frequencies, one from each of the transmitter coils. The transmitted signals are received and recorded, at which time they are operated on mathematically to create rotation of an after-the-fact virtual sonde for measuring desired earth formation properties.
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