摘要
乌兹别克斯坦金戈什古里油田地层情况复杂，侏罗系地层含有巨厚盐岩层，盐层厚度为300～1800m，盐岩层斜井段长度大干1500m。施工井均为大位移定向井及水平井，主要的技术难点是定向及水平井难点和巨厚盐膏层钻井难点的结合形成的一系列技术问题。通过使用欠饱和盐水钻井液和饱和盐水钻井液技术，优化井身结构、钻具结构和钻井参数，18口井的施工，平均井径扩大率为8％，复杂、事故损失率小于0．5％，收到了良好的经济效益和社会效益。
Wells drilled in JinGeShiGuLi oilfield(Kazakhstan) penetrated salt layers which are 300-1 800 m in thickness.The horizontal section of the wells was commonly longer than 1,500 m.Saturated / under-saturated salt drilling fluids were used in these wells.Other engineering measures,such as optimizing casing program,BHA and drilling parameters,should be employed in combination with good drilling fluid rheology and filtration properties.The average rate of hole enlargement was only 8%,and rate of loss in dealing with downhole troubles was less than 0.5%.
出处
《钻井液与完井液》
CAS
北大核心
2008年第4期43-45,共3页
Drilling Fluid & Completion Fluid
关键词
饱和盐水钻井液
井眼稳定
井眼净化
抗盐
水平井
大位移井
Saturated salt drilling fluids
Bore hole stabilization
Bore hole cleaning
Salt resistance
Horizontal wells
Extended-reach wells.
