发明授权
- 专利标题: Subsurface electromagnetic measurements using cross-magnetic dipoles
- 专利标题(中): 使用交叉磁偶极子的地下电磁测量
-
申请号: US11752112申请日: 2007-05-22
-
公开(公告)号: US07759943B2公开(公告)日: 2010-07-20
- 发明人: Dean M. Homan , Dzevat Omeragic , Tianhua Zhang , Nicolas Sebline
- 申请人: Dean M. Homan , Dzevat Omeragic , Tianhua Zhang , Nicolas Sebline
- 申请人地址: US TX Sugar Land
- 专利权人: Schlumberger Technology Corporation
- 当前专利权人: Schlumberger Technology Corporation
- 当前专利权人地址: US TX Sugar Land
- 代理商 Darla Fonseca; Brigitte Echols; Charlotte Rutherford
- 主分类号: G01V3/30
- IPC分类号: G01V3/30 ; G01V3/18
摘要:
Sensor assemblies including transmitter and receiver antennas to respectively transmit or receive electromagnetic energy. The sensor assemblies are disposed in downhole tools adapted for subsurface disposal. The receiver is disposed at a distance less than six inches (15 cm) from the transmitter on the sensor body. The sensor transmitter or receiver includes an antenna with its axis tilted with respect to the axis of the downhole tool. A sensor includes a tri-axial system of antennas. Another sensor includes a cross-dipole antenna system.