喇嘛甸油田二类B油层聚驱开发效果评价  

Evaluation of Polymer Flooding Development Effect in Class II B Reservoir of Lamadian Oilfield

作　　者：曹广胜[1] 李耀卿 戈甜甜 杜雨洋 伊苇艺 CAO Guang-sheng;LI Yao-qing;GE Tian-tian;DU Yu-yang;YI Wei-yi(Key Laboratory of Improving Oil and Gas Recovery of Ministry of Education,Northeast Petroleum University,Daqing Heilongjiang 163318,China)

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《当代化工》2023年第9期2134-2138,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金,活性原油在非均质储层中的自适应控水增油机理(项目编号:51574089)。

摘　　要：随着油田开发不断的深入,油田开发对象逐渐转向物性较差的油层,聚合物驱可以更好地动用这类储层。喇嘛甸油田二类B油层非均质性严重,聚驱见效时间较晚、含水下降幅度小。通过油藏数值模拟开展了二类B油层的聚驱开发效果评价研究。研究表明:初始含水率一定时,较低的注入压力可以使二类B油层的中高渗透层剩余油的动用程度升高,且随着注聚压力的升高,见效时间缩短,含水率下降幅度降低;随着含水率的增加应逐渐升高注入压力,以提高低渗透率油层的采出程度;以1 200万相对分子质量聚合物、含水率95%、注入压力7 MPa进行矿场试验见效时间为6个月,累积增油14 675 m^(3),取得了较好的聚驱效果。With the continuous deepening of oilfield development,the target of oilfield development is gradually shifting towards reservoirs with poor physical properties,and polymer flooding can better utilize such reservoirs.The heterogeneity of Class II B oil layer in Lamadian Oilfield is severe,and polymer flooding takes effect later,with a small decrease in water cut.A study was conducted on the evaluation of polymer flooding development effectiveness for Class II B oil layers through reservoir numerical simulation.The research showed that when the initial water cut was constant,a lower injection pressure could increase the utilization degree of remaining oil in the middle and high permeability layers of Class II B oil layers.With the increase of injection pressure,the response time was shortened,and the decrease in water cut was reduced;As the water cut increased,the injection pressure should gradually increase in order to improve the recovery of low permeability reservoirs;At the water cut of 95%and injection pressure of 7 MPa,a field experiment was conducted with a molecular weight polymer of 12 million,and the response time was 6 months.The cumulative oil increase was 14675 m^(3),achieving good polymer flooding effect.

关 键 词：二类B油层 聚合物驱 见效时间 注聚参数优选 

分 类 号：TE327[石油与天然气工程—油气田开发工程]