钻井液与完井液2025，Vol.42Issue(1)：127-133,7.DOI:10.12358/j.issn.1001-5620.2025.01.014
滑溜水压裂返排液在钻井液中资源化利用
Recycling in Drilling Fluids of Flowback Fluids from Slick Water Fracturing Operation
摘要
Abstract
When using slickwater fracturing fluids in reservoir stimulation,large amount of fluids flowed back from the hole have complex compositions and need to be discharged.In disposing these fluids,the"zero discharge"technology does not work.To solve this problem,the techniques for the treatment of the flowback slickwater fracturing fluid are optimized to retain the effective components to the maximum,and the slickwater fracturing fluid after treatment is then used as a component of drilling fluids,thereby realizing the recycling of the water phase and part of the additives in the flowback fracturing fluid.An environmentally friendly low-friction drilling fluid is formulated with flowback slickwater fracturing fluids,the composition of which is as follows:make-up water+4%sodium bentonite+0.3%soda ash+3%polysaccharide+0.1%FA-367+1.0%CMC-LV+1.0%methyl oleate.Laboratory experiment results show that the properties of this drilling fluid are stable at temperatures between 25℃and 150℃,the percent shale core recovery on hot rolling test is at least 90%,the linear rate of expansion of shale cores is reduced by at least 72%,the friction coefficient is reduced by at least 80%,and the drilling fluid satisfies the requirements of environment protection.The micromorphology of the mud cakes under SEM proves that this drilling fluid has good shale inhibitive capacity and good filtration control property at elevated temperatures.关键词
滑溜水压裂液/水基钻井液/压裂返排液/环境保护/资源化利用Key words
Slickwater fracturing fluid/Water based drilling fluid/Flowback fracturing fluid/Environment protection/Recycling分类
能源科技引用本文复制引用
刘怀珠,赵康宁,陈东,张超,常晓峰,张洁,张望远,张帆..滑溜水压裂返排液在钻井液中资源化利用[J].钻井液与完井液,2025,42(1):127-133,7.基金项目
国家自然科学基金-青年科学基金项目"共价键抗高温解吸附及隔离膜稳定井壁机理研究"(52204011) （52204011）
陕西省自然科学基础研究计划一般项目(青年)"应对陕北页岩气钻井壁失稳的成膜钻井液新体系研究"(2022JQ-493) （青年）
省部级国家重点实验室开放课题"抗高温有机硅聚糖提速护壁环保钻井液研究"(PLN2022-15). （PLN2022-15）
