压裂返排液回用影响因素研究  

Study on influencing factors of fracturing flowback fluid reuse

作　　者：王佳 沈燕宾 路建萍 李俊华 WANG Jia;SHEN Yan-bin;LU Jian-ping;LI Jun-hua(Shaanxi Key Laboratory of Fine Petroleum Chemicals,Shaanxi Chemical Industry Research Institute Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]陕西化工研究院有限公司陕西省石油精细化学品重点实验室,陕西西安710054

出　　处：《应用化工》2022年第9期2651-2653,共3页Applied Chemical Industry

基　　金：陕西省技术创新引导专项项目(2019TG-008);陕西延长石油(集团)科技项目(ycsy2017ky-A-37)。

摘　　要：返排液处理后直接用作配液用水成为返排液处理工艺主要研究方向。压裂返排液必须经过特殊处理才能进行二次利用。研究在返排液中含量较高的总铁、Ca^(2+)、Mg^(2+)、硼酸根离子对返排液回用的影响。结果表明,Ca^(2+)、Mg^(2+)、总铁单独存在变化时,会对压裂返排液回用效果产生一定的影响。在实际应用过程中,返排液中各因素共同作用,影响因素硼酸根>总硬度>总铁,优化后的水质指标确定为硬度<400 mg/L,总铁<10 mg/L,硼酸根含量<3 mg/L。It is the main research direction of flowback liquid treatment technology that flowback liquid can be directly used as water for dispensing after treatment.Fracturing flowback fluid must undergo special treatment before it can be reused.This paper studies the influence of high content of total iron,calcium ion,magnesium ion and borate ions in flowback solution on the reuse of flowback solution.The results show that the change of calcium ion,magnesium ion,total iron,alone will have a certain influence on the recovery effect of fracturing flowback fluid.In the practical application process,various factors in the flowback solution act together,and the order of influencing factors is borate,total hardness and total iron.The optimized water quality index is determined to be hardness less than 400 mg/L,total iron less than 10 mg/L,borate content less than 3 mg/L.

关 键 词：压裂返排液 回用 水质特点 

分 类 号：TQ432.9[化学工程] TE357.3[石油与天然气工程—油气田开发工程]