二元复合驱化学性能分析及提高采收率效果评价  

Chemical Performance Analysis of Binary Composite Flooding and Research on Enhanced Oil Recovery Technology

作　　者：贾东林[1] 闫海建 黄小峰 温磊[1] 王少楠 JIA Donglin;YAN Haijian;HUANG Xiaofeng;WEN Lei;WANG Shaonan(Yanchang Oilfield Co.,Ltd.,Zichang Oil Production Plant,Yan'an Shaanxi 717300,China;Xi'an Shiyou University,Xi'an Shaanxi 710065,China)

机构地区：[1]延长油田股份有限公司子长采油厂,陕西延安717300 [2]西安石油大学,陕西西安710065

出　　处：《当代化工》2024年第7期1540-1544,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金面上项目(项目编号:52174027)。

摘　　要：随着全球对化石能源的依赖持续增长,提高油田采收率成为石油工业的关键挑战之一。探讨了包含表面活性剂FDR和不同分子量聚丙烯酰胺的二元复合驱体系的化学稳定性、相容性、渗透率、流动特性以及驱油效果。结果表明:在低环境因素指数下(0~4),化学剂展示出较高的稳定性,而随着环境因素指数增加,其稳定性呈现波动并逐步下降。在渗透率与流动特性评估中,流动压力差的增加导致渗透率从0.265m D增加至1.236 mD。在驱油效果评价中,表面活性剂质量分数从1%增加到6.21%,驱油效率由1.212%提高至2.285%。此外,储层条件改善和优化注入压力对采收率的提升具有显著影响,特定条件下采收率可提高至3.283%。研究揭示了二元复合驱技术在不同条件下的性能表现,为优化油田采收率提供了理论和实践依据。As global dependence on fossil energy continues to grow,improving oil field recovery has become one of the key challenges for the petroleum industry.In this article,the chemical stability,compatibility,permeability,flow characteristics and oil displacement effect of a binary composite flooding system containing surfactant FDR and polyacrylamide of different molecular weights were discussed.The research results showed that under low environmental factor index(0~4),chemical agents showed high stability,but as the environmental factor index increased,their stability fluctuated and gradually decreased.In the evaluation of permeability and flow characteristics,the increase in flow pressure difference resulted in an increase in permeability from 0.265 mD to 1.236 mD.In the evaluation of oil displacement effect,the surfactant mass fraction increased from 1% to 6.21%,and the oil displacement efficiency increased from 1.212% to 2.285%.In addition,improving reservoir conditions and optimizing injection pressure had a significant impact on the improvement of recovery rate.Under certain conditions,the recovery rate could be increased to 3.283%.This study revealed the performance of binary composite flooding technology under different conditions and provided theoretical and practical basis for optimizing oil field recovery.

关 键 词：表面活性剂 聚丙烯酰胺 采收率 驱油效果 

分 类 号：TQ423[化学工程] TE39[石油与天然气工程—油气田开发工程]