哈萨克斯坦萨吉兹区块气田储层保护技术研究  

Research on Reservoir Protection Technology in the Gas Field of Sajiqi Block in Kazakhstan

作　　者：李行[1] 王松[1] 王浩任[1] 龙怀远 

机构地区：[1]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《长江大学学报（自然科学版）》2017年第15期56-59,共4页Journal of Yangtze University(Natural Science Edition)

基　　金：国家自然科学基金项目(41072109)

摘　　要：对哈萨克斯坦萨吉兹区块气田的潜在损害因素进行分析与评价,结果表明该区域地层为强水敏性损害,具有较强的水敏损害,存在中等偏弱速敏性、弱应力敏感性、中等的酸敏感性、中等偏弱的碱敏感性。再对该地区储层孔、渗特征进行分析,初步确定适合该区域储层特性的钻井液体系,在该基础上优选填充粒子和防水锁剂加入到钻井液中,以改善钻井液的封堵能力,降低水锁效应。该体系性能稳定,对储层岩心的渗透率恢复值达到80%以上,能够有效保护储层,现场应用效果良好。The potential damage factors of the gas field in Sajiqi Block of Kazakhstan were analyzed and evaluated,the results showed that the formation was strong water-sensitive damage,and there was a mid-weak velocity sensitivity,weak stress sensitivity,mid-acidic sensitivity and mid-weak alkaline sensitivity.At the same time the characteristics of reservoir porosity and permeability were analyzed,and the drilling fluid system suitable for reservoir characteristics of the block was preliminarily determined,on the basis of the study,the filling particles and water-lock preventing agent were chosen and put into the drilling fluid system for improving the sealing ability of the drilling fluid and reducing the effect of water lock.The performance of the system is stable,the permeability recovery value of the reservoir cores reaches more than 80%,which can effectively protect the reservoir,and good effect is obtained in field application.

关 键 词：钻井液 高温高压 敏感性 储层保护 暂堵剂 防水锁剂 哈萨克斯坦萨吉兹区块 

分 类 号：TE254.3[石油与天然气工程—油气井工程]