公开(公告)号：EP1253285B1

公开(公告)日：2010-09-01

申请号：EP02252599.2

申请日：2002-04-11

申请人： Camco International (UK) Ltd.

发明人： Boucher, Marcel L ,  Jarvis, Brian Peter ,  McCarthy, Tim

IPC分类号： E21B47/08

CPC分类号： E21B47/08

公开(公告)号：EP1253285A3

公开(公告)日：2003-07-16

申请号：EP02252599.2

申请日：2002-04-11

申请人： Camco International (UK) Ltd.

发明人： Boucher, Marcel L ,  Jarvis, Brian Peter ,  McCarthy, Tim

IPC分类号： E21B47/08

CPC分类号： E21B47/08

摘要： An accelerometer caliper while drilling arrangement comprising a drill bit 10 having an axis 12 of rotation and a gauge region 14, a caliper tool body 20, a first accelerometer 24 mounted upon the caliper tool body 20 and arranged to measure acceleration in a first direction 25, and a second accelerometer 28 mounted upon the caliper tool body 20 and arranged to measure acceleration in a second direction 29 orthogonal to the first direction 25, wherein the caliper tool body 20 and the drill bit 10 are coupled to one another in such a manner that the first and second accelerometers 24, 28 are mounted in a known relationship to the drill bit 10.