聚驱后“正电胶调剖+三元复合驱”提高采收率技术  

Combined EOR Method of Positively-charged-gel Profile Control With ASP Flooding After Polymer Flooding

作　　者：曹瑞波[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《西安石油大学学报（自然科学版）》2016年第1期58-61,67,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家科技重大专项"聚合物驱后进一步提高采收率新技术"(编号:2011ZX05010-005)

摘　　要：为了提高聚驱后油藏采收率,通过室内实验研究了聚驱后"正电胶调剖+三元复合驱"提高采收率技术。结果表明,正电胶可与油层中存留的聚合物发生物理化学反应,生成絮状络合物堵塞高渗层,起到调整油层非均质性的作用。该技术发挥了正电胶调剖扩大波及体积、三元复合驱提高驱油效率的双重作用,实现了"调、堵、驱"相结合。应用该技术,物理模型聚驱实验可提高采收率14.5%,效果显著。In order to enhance the oil recovery factor after polymer flooding, a new oil displacing method is put forward, which combinespositively-charged gel profile control with ASP flooding. Research results indicated that the physical and chemical reaction of the posi-tively-charged gel with the residual polymer in oil reservoir can generate floceulent complex, which can plug high permeability layers andreduce the heterogeneity of oil reservoirs. The technology could both increase swept volume by positively-charged gel and enhance recov-ery efficiency by ASP flooding, and it realizes the combination of profile controlling, plugging and oil displacing. Experimental resultshows that this technology can enhance the recovery factor by 14.5% after polymer flooding. So the technology has good field applica-tion prospect.

关 键 词：提高采收率技术 正电胶 调剖机理 三元复合驱 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]