水平井压裂返排液循环利用技术研究  

Study on Recycling Technology of Horizontal well Fracturing Fluid

作　　者：周佩[1] 刘宁[1] 董俊[1] 王小勇[1] 何治武[1] 

机构地区：[1]中国石油长庆油田分公司油气工艺研究院低渗透油气田勘探开发国家工程实验室

出　　处：《油气田环境保护》2015年第5期46-48,92,共3页Environmental Protection of Oil & Gas Fields

摘　　要：文章以提高压裂返排液处理效率、水循环再利用为目标,针对长庆油田安平某水平井压裂返排液的性质特点,采用"混凝-沉降-精细过滤"处理工艺,对压裂返排液进行处理,处理后水样中Ca^(2+)和浊度均大幅下降,总硬度控制在300 mg/L。处理后的水配制的低温胍胶压裂液体系其耐温、抗剪切性能良好,具有良好的流变性能、破胶性能,不产生多余的残渣,能够满足现场压裂施工作业要求。各项性能评价说明采用该技术处理后的水可循环用于配置压裂液。In this paper,to improve the efficiency of fracturing fluid treatment and realize water reuse,according to the characteristics of the horizontal well fracturing fluid from Anping in Changqing oilfield, 'coagulation-sedimentation-fine filtering' process was adopted processed in water with Ca^((2+)) and turbidity were dropped,total hardness controlled at 300 mg/L.The treated water recycling configuration fracturing fluid,to achieve 'zero emissions' goal.The preparation of the basic properties of the crosslinked gel fracturing well in 70℃,170 s^(_1) under the conditions of temperature,shear good performance to meet the construction requirements fracturing.Therefore,the technology not only to solve the intractable environmental problems,but also achieved a recycling and 'zero emissions' aim to protect the environment for the domestic processing of fracturing fluid explore a new path.

关 键 词：水平井 压裂返排液 零排放 循环利用 

分 类 号：X741[环境科学与工程—环境工程]