中国石油大学学报（自然科学版）2025，Vol.49Issue(3)：149-157,9.DOI:10.3969/j.issn.1673-5005.2025.03.016
致密油储层清洁压裂液破胶液高效排驱规律及机制
High efficient displacement rule and mechanism of gel breaking fluid of clean fracturing fluid in tight oil reservoir
摘要
Abstract
A new type of clean fracturing fluid was prepared and its oil-water interfacial tension,wetting adjustment ability and emulsification performance were comprehensively evaluated.The effect of the soak time on the dynamic displacement of gel breaking fluid was analyzed.The displacement effect and mechanism were investigated by high temperature and high pressure NMR online displacement experiment.The results show that the pressure reduction rate of clean fracturing fluid is 84.9%com-pared with that of water injection huff and puff and slick water.And the oil recovery is 1.9 times higher than that of water in-jection and 4.3 times higher than that of slick water.Compared with direct flowback,the oil recovery is increased by 22.6%-23.1%.When the soak time is more than 8 h,the degree of oil production does not change with the increase of the soak time.关键词
致密油/清洁压裂液/破胶液/高效排驱/作用机制Key words
tight oil/clean fracturing fluid/gel breaking fluid/high efficient displacement/mechanism分类
能源科技引用本文复制引用
孙鑫,戴彩丽,侯树刚,孙永鹏,杜焕福,王春伟..致密油储层清洁压裂液破胶液高效排驱规律及机制[J].中国石油大学学报（自然科学版）,2025,49(3):149-157,9.基金项目
国家重点研发计划项目(2019YFA0708700) （2019YFA0708700）
国家自然科学基金重点项目(51834010) （51834010）
山东省博士后基金项目(SDCX-ZG- （）
