摘要
压裂返排液液量大,易造成环境污染,其处理难度大,处理成本高。针对此问题,研究利用清洁压裂液返排液配制钻井液的工艺。通过正交实验、极差分析、单因素实验,优选出所配制的钻井液各项性能最佳的相应条件。线性膨胀率实验和泥球实验表明,清洁压裂液返排液配制的钻井液及其上清液都对膨润土的水化膨胀有较强的抑制作用,抑制性优于4%KCl溶液。
According to the problems of large liquid volume, difficult treatment, high processing cost, and environmental pollution on flowback-fluid of clean fracturing, it is proposed a process of clean fracturing flowback-fluid reusing for preparing drilling fluid. The corresponding conditions of optimum performance of prepared drilling fluid were screened by orthogonal designed experiment, range analysis, and single-factor experiment. From linear bentonite swelling experiment and mud ball experiment, the results indicate that the drilling fluid prepared by the backflow-liquid of clean fracturing and its supernatant have a good inhibitory effect on the hydration expansion of clay, and the inhibition capability is better than that of 4% KCl solution.
作者
张洁
张凡
赵毅
都伟超
陈刚
ZHANG Jie;ZHANG Fan;ZHAO Yi;DU Weichao(College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Environmental Pollution Control and Reservoir Protection in Oil and Gas Field, Xi’an Petroleum University, Xi’an 710065, China;Shaanxi Environmental Protection Company, Xi’an 710021, China;State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China)
出处
《复杂油气藏》
2019年第2期67-72,共6页
Complex Hydrocarbon Reservoirs
基金
国家自然科学基金项目“环保型聚糖-木质素钻井液体系的应用基础研究”(50874092)
陕西省教育厅科技服务地方专项(产业化培育项目)“杂多糖清洁钻井液在陕北油田定向井中的应用”(17JF025)
关键词
压裂返排液
钻井液
抑制性
fracturing flowback fluid
drilling fluid
inhibition
