DIPMETER APPARATUS AND METHOD FOR INVESTIGATING EARTH FORMATIONS,申请号CA19922081785-传众专利搜索

DIPMETER APPARATUS AND METHOD FOR INVESTIGATING EARTH FORMATIONS

申请公布号：CA2081785(C)

申请号：CA19922081785

申请日期：1992.10.30

申请公布日期：1996.08.27

申请人：

SCHLUMBERGER CANADA LIMITED

发明人：CLARK, BRIAN;BONNER, STEPHEN D.;JUNDT, JACQUES;LULING, MARTIN;ROSTHAL, RICHARD A.

分类号：E21B47/026;G01V3/20;(IPC1-7):G01V3/18

主分类号：E21B47/026

摘要：A disclosed embodiment utilizes one or more toroidal coil antennas mounted, in an insulating medium, on a drill collar to induce currents which travel in a path that includes the drill collar and earth formations around the drill collar. At least one array of electrodes is provided on at least one stabilizer blade of the drill collar and is utilized to detect currents transmitted by toroidal coil antennas which return via the formations to the electrodes laterally; that is, approximately normal to the axis of the drill collar. 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.