聚合物及表面活性剂前置段塞对三元复合驱采收率影响  

Effect of pre-slug of Polymer/Surfactant upon the recovery efficiency of ASP compound flooding

作　　者：吴文祥[1] 孙灵辉[1] 胡锦强[1] 刑德琪[2] 

机构地区：[1]大庆石油学院石油工程学院,黑龙江大庆163318 [2]大庆石油化工总厂计划与生产部,黑龙江大庆163714

出　　处：《大庆石油学院学报》2005年第6期95-97,114,共4页Journal of Daqing Petroleum Institute

摘　　要：基于变异因数为0.65的两维纵向非均质正韵律物理模型,分析了聚合物及表面活性剂二元前置段塞中聚合物质量浓度、段塞大小及固定二元前置段塞、聚合物与表面活性剂及碱三元体系段塞大小对三元复合驱油效果的影响.结果表明:化学剂总成本相同的条件下,聚合物及表面活性剂二元前置段塞聚合物质量浓度越高,其三元复合驱采收率越高,且出口含水率大于60%时,二元前置段塞聚合物质量浓度应为1 000 mg/L;聚合物及表面活性剂二元前置段塞大小对三元复合驱采收率没有影响,只是随着二元前置段塞的增加,岩心出口含水率下降;固定二元前置段塞,ASP段塞越大,出口含水率越低,其驱油效果越好.Based on the two dimensional positive rhythm inhomogeneous physical models whose alteration index is 0.65,the effects of the polymer concentration and slug size in the Polymer/Surfactant pre-slug,and of the slug size of the polymer/surfactant/alkali ternary system on the flooding efficiency are studied.The results show that when the total costs of the chemical agents are equal,the higher of the polymer solution in the pre-slug,the higher the recovery efficiency of the ternary system,and when the water cut of the outlet is higher than 60%,the polymer solution in the pre-slug should be 1 000 mg/L;the size of the polymer/surfactant pre-slug has no effect on the recovery ratio of the ternary flooding,only the water cut decreases with the increase of the pre-slug size.When the pre-slug size is set,the larger the ASP slug,the lower the water cut of the outlet,the better the flooding efficiency.

关 键 词：二元复合体系 前置段塞 三元复合驱 原油采收率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]