日用化学工业（中英文）2023，Vol.53Issue(4)：373-381,9.DOI:10.3969/j.issn.1001-1803.2023.04.002
高温非均质油藏聚合物凝胶调驱实验研究
Experimental study on polymer gel profile control and flooding in high-temperature heterogeneous reservoirs
摘要
Abstract
After long-term exploitation of the high-temperature heterogeneous reservoirs in North China Oilfield, the water content becomes high and the heterogeneity is further enhanced, while conventional chemical flooding measures have poor effects in water control and enhancement of oil production. To solve this problem, the high-temperature resistance and the effects in profile control, water control and oil increase for polymer gels were studied through the combination of indoor screening, physical simulation, and theoretical analysis. The results showed that, the selected gel system had excellent high-temperature resistance and viscoelasticity, and the maximum viscosity was 4371.2 mPa·s after complete gelation. After 30 days of high temperature aging, the viscosity retention rate was 90.5％, and the elastic modulus and viscous modulus were 10.4 and 1.3 Pa, respectively. The system had strong plugging ability. In a certain range of permeability contrast, the abilities of profile improvement, water control and enhancement of oil production of the system were increased with the increase of permeability contrast. When the permeability contrast was increased from 2.13 to 8.16, the profile improvement rate after profile control was increased from 58％ to 92.8％; when the permeability contrast was increased from 2.06 to 8.08, the recovery rate after profile control and flooding was increased from 10.2％ to 19.5％.关键词
高温非均质油藏/聚合物凝胶/交联机理/调驱能力/采收率Key words
high-temperature heterogeneous reservoir/polymer gel/cross-linking mechanism/profile control and flooding/recovery rate分类
能源科技引用本文复制引用
廖建军,李华斌,邓金玭,何刚,刘思思,张肖..高温非均质油藏聚合物凝胶调驱实验研究[J].日用化学工业（中英文）,2023,53(4):373-381,9.基金项目
中国石油天然气股份有限公司科学研究与技术开发项目(HBYT-KTY-2020-JS-50312) （HBYT-KTY-2020-JS-50312）
