公开(公告)号：US20040056663A1

公开(公告)日：2004-03-25

申请号：US10254752

申请日：2002-09-25

发明人： Paul L. Sinclair ,  Joseph K. Clontz

IPC分类号： G01V003/10 ,  G01V003/28

CPC分类号： G01V3/32

摘要： A method and apparatus for a downhole antenna comprising a housing having an outer surface and a longitudinally bored inner cavity, the outer surface having a first slot and a corresponding second slot extending from the outer surface to the longitudinally bored inner cavity; a first removable downhole antenna segment disposed in the first slot in a first transverse cross section of the housing, the first removable downhole antenna segment comprising at least one coil to inductively couple a signal from the longitudinally bored inner cavity to the earth formation. A second removable downhole antenna segment, interchangeable with the first removable downhole antenna segment, disposed in the corresponding second slot, the second slot in a second transverse cross section of the housing, the second removable downhole antenna segment comprising at least one coil to inductively couple a signal from the earth formation to the longitudinally bored inner cavity.

摘要翻译： 一种用于井下天线的方法和装置，包括具有外表面和纵向钻孔的内腔的壳体，所述外表面具有第一槽和从外表面延伸到纵向钻孔内腔的对应的第二槽; 第一可拆卸的井下天线段，其设置在壳体的第一横截面中的第一槽中，第一可拆卸的井下天线段包括至少一个线圈，以将来自纵向无孔内腔的信号感应地耦合到地层。 第二可移动井下天线段，与第一可移动井下天线段可互换，设置在相应的第二槽中，第二槽位于壳体的第二横截面中，第二可拆卸井下天线段包括至少一个线圈以感应耦合 从地层到纵向无孔内腔的信号。