摘要
针对钻井中井壁失稳问题开展井壁稳定性研究 ,文中就井壁应力状态和失稳类型进行分析计算 ,并结合测井资料和岩心的室内实验结果进行分析 ,建立了一套计算地层坍塌压力的方法 ,结合盐城地区 3口井应用对比 ,坍塌压力剖面基本吻合现场实际 。
According to sidewall unstable problem during drilling,the study on sidewall stability is developed.The paper analyses sidewall stress state and sidewall unstable type,and combines with log data and indoor experimental result of core.Through analysis and calculation,the method of calculating slough formation pressure is proposed.By application of the method in 3 wells in Yancheng area,result shows that slough pressure section fits in with field practical condition.It supplies some basis for design of drilling fluid density.
出处
《钻采工艺》
CAS
2000年第4期22-26,共5页
Drilling & Production Technology
关键词
井眼稳定
井壁失稳
钻井工程
石油钻井
hole stabilization,theoretical research,log data,core,stratigraphic section,formation pressure detection,testing,evaluation
