发明公开
EP0541425A2 Dipmeter apparatus and method for investigating earth formations
失效
Neigungsmessgerätund -verfahren zum Untersuchen von Erdformationen。
- 专利标题： Dipmeter apparatus and method for investigating earth formations
- 专利标题（中）： Neigungsmessgerätund -verfahren zum Untersuchen von Erdformationen。
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申请号： EP92402946.5申请日： 1992-10-30
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公开(公告)号： EP0541425A2公开(公告)日： 1993-05-12
- 发明人: Clark, Brian , Luling, Martin , Bonner, Stephen D. , Jundt, Jacques , Rosthal, Richard A.
- 申请人： SCHLUMBERGER LIMITED , SERVICES PETROLIERS SCHLUMBERGER , SCHLUMBERGER TECHNOLOGY B.V. , SCHLUMBERGER HOLDINGS LIMITED
- 申请人地址： 277 Park Avenue New York, N.Y. 10172 US
- 专利权人： SCHLUMBERGER LIMITED,SERVICES PETROLIERS SCHLUMBERGER,SCHLUMBERGER TECHNOLOGY B.V.,SCHLUMBERGER HOLDINGS LIMITED
- 当前专利权人： SCHLUMBERGER LIMITED,SERVICES PETROLIERS SCHLUMBERGER,SCHLUMBERGER TECHNOLOGY B.V.,SCHLUMBERGER HOLDINGS LIMITED
- 当前专利权人地址： 277 Park Avenue New York, N.Y. 10172 US
- 代理机构： Stoole, Brian David
- 优先权： US786138 19911031
- 主分类号： E21B47/026
- IPC分类号： E21B47/026 ; G01V3/20
摘要：
A disclosed embodiment (Fig. 2) utilizes one or more toroidal coil antennas (205, 215) mounted, in an insulating medium (206), on a drill collar (202) to induce currents which travel in a path that includes the drill collar (202) and earth formations around the drill collar (202). At least one array of electrodes (A1-A20) is provided on at least one stabilizer blade (220A) of the drill collar (202) and is utilized to detect currents transmitted by toroidal coil antennas (205, 215) which return via the formations to the electrodes (A1-A20) laterally; that is, approximately normal to the axis of the drill collar (202). Signal traces are obtained from measurements taken at respective ones of the transducers, and a dip characteristic of the formations is determined from the signal traces and from signals representing the rotational orientation of the drill collar (202).
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