摘要
为开采聚合物驱后油藏剩余油,进一步提高采收率,分析凝胶调剖与表面活性剂驱油结合机理,采用小段塞多轮次交替注入方式;利用铬离子凝胶体系和RMA-1型表面活性剂,在大平板岩心上进行聚合物驱后凝胶与表面活性剂段塞驱油实验.结果表明:利用聚合物驱后凝胶与表面活性剂多轮次交替注入方式驱油后,其阶段采收率可在聚驱基础上提高10%以上,说明凝胶与表面活性剂交替注入驱油技术能够在聚合物驱后进一步挖掘剩余油,提高原油采收率.
In order to fully exploit the remaining oil after polymer flooding,further enhancing oil recovery,the combination mechanism of gel profile and surfactant flooding are analyzed.The multi-cycle and alternative injection oil displacement experiment was carried out on the large flat-panel model with the selected gel system and surfactant.The experimental results show that,the stage recovery of the gel and surfactant slug alternative injection flooding can improve more than 10% on the basis of the polymer flooding.It is shown that the technology of gel and surfactant alternative injection can enhance oil recovery through further tapping the remaining oil.
出处
《大庆石油学院学报》
CAS
北大核心
2010年第2期85-88,共4页
Journal of Daqing Petroleum Institute
基金
国家科技重大专项项目(2008ZX05010-004)
