深井灰岩破碎地层取心技术及应用  

DEEP BROKEN FORMATION CORING TECHNOLOGY AND ITS APPLICATION

作　　者：成景民[1] 冯会斌[1] 王治中[2] 刘振宇[1] 

机构地区：[1]中原油田钻井公司 [2]中国石油大学

出　　处：《钻采工艺》2006年第3期26-27,122,共2页Drilling & Production Technology

摘　　要：深井灰岩破碎地层取心效果受地层岩性、地层倾角以及构造地应力对地层的挤压作用等因素影响较大,采用常规取心工具收获率低(邻井当深3井取心收获率仅有23%)。通过改造常规取心工具,加大内筒和钻头工作的稳定性,减小钻头内台阶与井筒底端间隙,完善取心工艺,制定合理的操作规程以及强化现场管理,使建阳1井取心平均收获率达98.17%,总取心进尺100多米,解决了该地区深井海相灰岩破碎地层取心收获率低的难题,为本区取心作业积累了经验。Core recovery of deep broken limestone formation is very low due to the influence of its lithology, formation dip and tectonic earth stress. By modifying the conventional coring tool, increasing the stability of the inner barrel and bit, reducing the gap between bit inner shoulder and bottom-hole, improving coring technology, working out proper operation regulation and strengthening on-site management, the core recovery of Well Jianping 1 reaches 98.17% with 100m coring footage.

关 键 词：取心钻井 取心工具 收获率 破碎地层 应用 

分 类 号：TE244[石油与天然气工程—油气井工程]