大庆石油地质与开发2025，Vol.44Issue(3)：112-120,9.DOI:10.19597/J.ISSN.1000-3754.202309028
适用于海上高温高盐油藏深部调驱的超分子复合微球体系制备及性能评价
Preparation and performance evaluation of supramolecular composite microsphere system for deep profile control in high-ptemperature and high-salinity offshore reservoirs
摘要
Abstract
In view of the problem that conventional polymer microsphere systems are not suitable for high-tempera-ture and high-salinity reservoirs due to poor temperature and salt resistance,a supramolecular composite micro-sphere system containing temperature-resistant group siloxane and salt-resistant group AMPS is successfully pre-pared via emulsion polymerization method.The influence of components dosages,reaction time and reaction temper-ature on the performance of microsphere system is investigated.The structure and performance of the system are characterized and evaluated through instrument detection and analysis,and its plugging performance and displace-ment effect are tested by physical simulated displacement experiment.The results show that average initial particle size of composite microsphere system is about 480 nm,with mass fraction of active matter of 25.7%.The system is stable for 14 d in condition of 170℃temperature and 34 691 mg/L salinity,and still has plugging effect after aging for 60 d.The system has good injectivity and plugging capability.Initial resistance factor of the system with mass concentration of 1 000～4 000 mg/L is≤5 at permeability of 30×10-3～300×10-3 μm2,with maximum plugging rate of 88.3%for cores with permeability of 223.8×10-3～261.0×10-3 μm2.Microsphere system with mass concentration of 2 000 mg/L gets maximum incremental recovery of 20.69 percentage points in core displacement experiment with permeability contrast of 10.Field test in high-temperature and high-salinity reservoirs gets net incremental oil pro-duction of 4 603.1 m3,with stimulation-effective period exceeding 7 months and significant oil incremental effect.The technique plays demeonstration role for development of high-temperature and high-salinity offshore reservoirs.关键词
超分子微球/耐温耐盐/乳液聚合/性能评价/深部调驱Key words
supramolecular microsphere/temperature and salt resistance/emulsion polymerization/performance evaluation/deep profile control分类
能源科技引用本文复制引用
李翔,郑玉飞,刘丰钢,徐国瑞,鞠野,宫汝祥,朱彤宇,柏溢..适用于海上高温高盐油藏深部调驱的超分子复合微球体系制备及性能评价[J].大庆石油地质与开发,2025,44(3):112-120,9.基金项目
国家自然科学基金项目"纳米粒子调控交联聚合物凝胶触变性机制研究"(51704035) （51704035）
中国海洋石油集团有限公司三新三化项目"超分子微球调驱优化研究及应用"(YSB21YF004). （YSB21YF004）
