石油钻采工艺2012，Vol.34Issue(2)：52-54,3.
提高深井取心效率技术研究
Research on improving deep well coring efficiency
摘要
Abstract
In order to deal with low coring efficiency in deep zone of Daqing field, the motor coring tool and high efficiency grinding coring bit are designed. The motor coring tool introduces ball dropping sub, jam reminder, inner barrel thread protector, and two-catcher assembly, which not only solves the problem of low ROP and core recovery when using conventional coring tool, but also makes jam found in time. The high efficiency grinding coring bit is durable and suitable for igneous formation. The field tests prove that the motor coring tool and high efficiency grinding coring bit have good performance and the coring efficiency in deep formation is improved.关键词
深井取心/动力钻具取心工具/取心钻头/投球机构/堵心报警/双岩心爪Key words
deep well coring/ motor coring tool/ coring bit/ ball dropping sub/ jam reminder/ two-catcher assembly分类
能源科技引用本文复制引用
刘春来,杨永祥,常珍,唐纯香,吴党辉,许宠..提高深井取心效率技术研究[J].石油钻采工艺,2012,34(2):52-54,3.基金项目
大庆钻探工程公司科研项目“提高深井取心效率技术研究”(编号:ZKY2008-001). （编号:ZKY2008-001）
