钻进式井壁取心器推靠方法的分析  

Analysis of Leaning-Against Method for Drilling Type Sidewall Coring Tool

作　　者：王世圻[1] 

机构地区：[1]北京航天自动控制研究所

出　　处：《航天控制》1998年第2期77-80,共4页Aerospace Control

摘　　要：钻进式井壁取心器在井下钻取岩心时，必须牢固地推靠在井壁上，即姿态和位置不允许发生变化，否则就会卡钻，不能取出岩心。一般常用的单臂推靠法不够可靠，本文介绍的三臂推靠法克服了单臂推靠的缺点，极大地提高了取心收获率，并且简化了操作。When a drilling type sidewall coring tool picks core in the well, it must lean against the well wall firmly, i e , the attitude and position are not allowed to be varied, otherwise it will be jammed and the core cannot be picked out. The single-arm leaning-against method now used is not quite reliable, in this paper a 3-arm leaning-against method is recommended to overcome the deficiency of the single-arm method, it increases the coring yield greatly and simplifies the operation.

关 键 词：取心器 油井 钻进式 井壁取心器 钻井 推靠 

分 类 号：TE921.3[石油与天然气工程—石油机械设备]