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在分析大情字井地区地层特点及钻井液应用情况的基础上 ,通过大量的室内试验 ,优选出了两性离子聚合物钻井液体系配方 ,并制定了相应的技术措施 ,在该区 5口井的应用中取得了较好的效果。
Based on the analysis of stratigraphic features and application of drilling fluid in Daqingzijing area, through a large number of laboratory tests, the formula of drilling fluid system of zwitterionic polymer was optimized and corresponding technical measures were formulated. In the five wells The application has achieved good results.