非常规压裂返排液回注处理实验研究  

Experimental study on reinjection treatment of unconventional fracturing flow-back fluid

作　　者：韩卓[1] 郭威[2] 张太亮[2] 王扬[1] 邹京伦[1] 李泽锋[2] 

机构地区：[1]中国石化胜利油田分公司技术检测中心 [2]西南石油大学化学化工学院

出　　处：《石油与天然气化工》2014年第1期108-112,共5页Chemical engineering of oil & gas

摘　　要：油气井作业过程中产生的压裂返排液已成为当前油田地表水体主要污染源之一。对非常规开采压裂返排液进行了主要污染成分分析，结合油田现场处理现状提出了回注处理工艺，并进行了实验研究。结果表明，在采用破胶、Fe/C微电解、混凝和压滤的处理工艺后，压裂返排液达到ρ（悬浮物）＜10 mg/L、ρ（油）＜30 mg/L、pH值为6～9的标准要求。该研究为压裂返排液回注处理工艺、装置的设计及现场实施提供了实验基础。Flow-back waste water from fracturing operation in the production process of oil and gas wells has become one of main pollution sources in the oilfield .This paper analyzed the main pollution components of the unconventional drilling fracturing flow-back fluid ,put forward the disposal reinjection treatment process according to the present situation of oilfield site ,and carried out experimental research .The results showed that the standards （SS〈10 mg/L ,oil con-tent〈30 mg/L ,pH=6 -9） could be reached by series of disposal methods ,such as gel break-ing ,ferric-carbon micro-electrolysis ,flocculation and filter pressing .Aiming to meet the require-ments of reinjection ,experimental basis for design and implementation of treatment device and disposing of flow-back fluid from unconventional fracturing were provided .

关 键 词：非常规压裂返排液 破胶 微电解 混凝 

分 类 号：X741[环境科学与工程—环境工程]