羊塔克地区复杂地层高密度饱和盐水钻井液技术研究  

Research on High Density-saturated Brine Drilling Fluid in Complex Formation of Yangtake Region

作　　者：蒋明英[1,2] 龚文平[1] 李中全[3] 严利咏[4] 廖升平[4] 严敏[4] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [2]中石油安全环保技术研究院HSE新技术推广中心,北京100083 [3]塔里木油田分公司生产运行处,新疆库尔勒841000 [4]长江大学地球科学学院,湖北荆州434023

出　　处：《石油天然气学报》2010年第3期281-284,共4页Journal of Oil and Gas Technology

基　　金：中国石油天然气股份有限公司科技风险创新研究项目(07-06D-01-04-02-05)

摘　　要：采用适当密度的钻井液技术是复杂岩性地层钻井成功的关键。通过对羊塔克地区下第三系复杂地层不稳定因素及其对钻井作业的潜在危害进行分析研究,对钻井液的配伍进行改进,优选了适合该地区的KCl/聚合物饱和盐水钻井液体系。该钻井液体系具有良好的流变性、造壁性、润滑性和抑制性。现场应用表明,该钻井液体系对该地区顺利钻进、井下安全及油气层保护有非常好的效果。The key of successful drilling of complex lithological formation was to use drilling fluid with appropriate density.The labile factors of complex formation of Eogene system in Yangtake Region and some potential danger in well drilling were analyzed,the compatibility of the drilling fluid was improved and the KCl /polymer saturated brine drilling fluid system was optimized as the appropriate drilling fluid.The drilling fluid system has good rheological property,plastering capacity,lubricity and inhibition.Field application result shows that the drilling fluid is effect for easy drilling of downhole safety and hydrocarbon reservoir protection.

关 键 词：羊塔克地区 复杂地层 钻井液 井眼闭合 稳定井壁 

分 类 号：TE254.3[石油与天然气工程—油气井工程]