运用聚合物驱油技术提高采收率方法研究  

Study on Improving Oil Recovery by Using Polymer Flooding Technology

作　　者：李刚[1] 宋群华 高振东[2] 叶政钦[2] 陈栋[1] 王凯[3] LI Gang;SONG Qun-hua;GAO Zhen-dong;YE Zheng-qin;CHEN Dong;WANG Kai(Xingzichuan Oil Production Plant of Yanchang Oilfield Co.,Ltd.,Yan'an Shaanxi 716099,China;Yanchang Oilfield Co.,Ltd,Yan'an Shaanxi 716099,China;China University of Petroleum(East China),Qingdao Shandong 266580,China)

机构地区：[1]延长油田股份有限公司杏子川采油厂,陕西延安716099 [2]延长油田股份有限公司,陕西延安716099 [3]中国石油大学(华东),山东青岛266580

出　　处：《当代化工》2022年第8期1974-1977,1983,共5页Contemporary Chemical Industry

基　　金：国家科技重大专项,大型油气田及煤层气开发(项目编号:2018ZX07002-002)。

摘　　要：随着我国低渗透油藏不断开发,聚合物驱油技术已在部分油田开展规模试验与应用。由于国内油田储层、地质特征等的差异性,同样的驱油技术并不一定适应所有的低渗透油藏,为了提高该技术的适应性,以H低渗透油藏取样岩心作为实验研究对象,通过实验模拟取样岩心中注入X聚合物过程中实验参数的设定及最优参数的选取,研究X聚合物在低渗透多孔介质中的驱油效果。结果表明:使用X聚合物驱油时,随着聚合物溶液注入质量浓度的增加,采收率增幅保持在9.1%~15.3%范围内,X聚合物具有明显驱油效果。当注入不同质量浓度聚合物时,在5PV范围内,取样岩心驱油样的含水率可以控制在60%以内,聚合物驱油技术在H低渗透油田室内试验效果显著,可进一步推广现场试验。Along with the constant development of low permeability reservoir in China, the scale test and application of polymer flooding technology has been carried out in some oil fields. Due to the differences in domestic oilfield reservoirs and geological characteristics, the same oil displacement technology may not be suitable for all low-permeability reservoirs. In order to improve the adaptability of this technology, taking sampling core of H low permeability reservoir as experimental research object, the oil displacement effect of X polymer in low permeability porous media was studied by simulating the setting of experimental parameters and the selection of optimal parameters in the process of injecting X polymer into sampled cores. The results showed that the recovery rate increased by 9.1%~15.3% with the increase of polymer solution injection mass concentration, and the X polymer had significant oil displacement effect. When the polymer was injected with different mass concentrations, the water content of the sample core flooding was controlled within 60% in the range of 5 PV. The polymer flooding technology had remarkable effect in the laboratory test of H low permeability oilfield, which should be further popularized in the field test.

关 键 词：低渗透油藏 聚合物 驱油 采收率 

分 类 号：TQ016[化学工程]