页岩储层采出水污染及处理方式研究

Study on Produced-water Contamination and Its Comprehensive Treatment in Shale Reservoir

基于国内外页岩储层水力压裂后采出水的水质特征,分析了采出水污染的成因及组成;总结并分析了采出水回注、回用及外排等处理工艺的特征及其优缺点。结合国内外页岩气储层压裂采出水的处理得出结论现状进行分析,得出结论:将采出水尽可能的资源化,经过合理处理后加以利用,是页岩储层水力压裂后采出水处理的首要选择,也将有利于页岩气资源的可持续发展。

Based on the quality characteristics of the produced-water after hydraulic fracturing in shale reservoirs at home and abroad,the contamination causes of the produced-water and its compositions were analyzed.The characteristics,advantages and disadvantages of the treatment processes such as injection,reuse and efflux of produced-water were summarized and analyzed.Based on the analysis of the domestic and overseas status quo of Shale reservoir produced-water treatment,a conclusion was formed that making the Shale reservoir produced-water reclaimed as much as possible and utilizing it after reasonable treatment was the primary choice of shale reservoir produced-water treatment and it would be conducive to the sustainable development of shale gas resources.