摘要
盐层和盐膏层井段引起的盐岩蠕变缩径,不仅易造成卡钻事故,完井后还会挤毁套管,使油井报废。液力变径钻头以其结构简单、开关灵活、操作简便、安全性能高等特点,能够成功地对弹塑性岩层、蠕变盐层、小井眼等井段实施扩眼,尤其对采用爆炸方式松螺纹仍无法起出套管的井,进行下钻一次多点切割,切割成功率高达 100%,具有较高的使用价值。
The reduced borehole diameter caused by creeping salt layer and salt gel will bring blocking pipe or extrude easing when completion finishe.Hydraulic variable diameter drilling bit can enlarge the reduce borehole in elastic layer and salt gel layer for it features simple structure,easy on/off and operation and high safe,It can specially cut the casing at multi-section for the casing that cannot be solved by explosion with 100% success
出处
《石油矿场机械》
2005年第2期61-63,共3页
Oil Field Equipment
关键词
蠕变缩径
液力变径钻头
套管切割
套管锻铣
creep reducing diameter
hydraulic variable diameter drilling bit
casing cutting
casing firing milling
