LH2500抗盐聚合物对注聚后期开发效果影响研究  

Study on the Influence of LH2500 Salt-resistant Polymer on the Late Development of Polymer Flooding

作　　者：夏境泽 李月 Xia Jingze;Li Yue(The Fourth Oil Extraction Plant of Daqing Oilfi eld Company Limited,Heilongjiang,163511)

机构地区：[1]大庆油田有限责任公司第四采油厂,黑龙江163511

出　　处：《当代化工研究》2024年第13期49-51,共3页Modern Chemical Research

摘　　要：为了改善普通聚合物驱(聚丙烯酰胺)在注聚后期含水回升速度快、剖面反转严重、中低渗透层剩余油富集等问题,在X油田A块6#站开展普通聚合物注聚后期更换LH2500抗盐聚合物现场试验。本文依据注聚后期更换LH2500抗盐聚合物后动态指标变化特征,开展该聚合物受效规律及效果评价方法研究。研究表明,由于其分子结构及理化性能特点,LH2500抗盐聚合物具有注聚后期注入能力强、含水升幅小、聚合物用量小、对中低渗透层有效动用等优势,其中注入速度达0.2 PV/a,采收率提升12%以上。该技术经济效益显著,推广应用前景广阔。In order to improve the problems of rapid water cut recovery,serious profile inversion and remaining oil enrichment in medium and low permeability polyacrylamide in the late stage of polymer flooding,the field test of replacing LH2500 salt-resistant polymer was carried out at 6#station of Block A in X oilfield.In this paper,the effect rule and evaluation method of LH2500 salt-resistant polymer were studied according to the dynamic index change characteristics of LH2500 salt-resistant polymer after polymer injection.The results show that LH2500 salt-resistant polymer has the advantages of strong injection ability,low water content,low polymer dosage and effective utilization of middle and low permeability layers due to its molecular structure and physical and chemical properties,the injection rate is 0.2 PV/a,and the recovery is increased by more than 12%.The technology has obvious economic benefit and wide application prospect.

关 键 词：抗盐聚合物 油层动用 注聚后期 开发效果 

分 类 号：TE3[石油与天然气工程—油气田开发工程]