Y区块变流度聚合物驱注入方式优化研究  

Optimization of Injection Method for Variable Flow Polymer Flooding in Block Y

作　　者：张承丽[1] 杨倩瑜 赵震 孙铎 刘灏亮 ZHANG Chengli;YANG Qianyu;ZHAO Zhen;SUN Duo;LIU Haoliang(College of Petroleum Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China;PetroChina Yumen Oilfield Branch Company,Jiuquan Gansu 735019,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]中国石油玉门油田分公司,甘肃酒泉735019

出　　处：《当代化工》2024年第8期1975-1978,共4页Contemporary Chemical Industry

基　　金：黑龙江省自然科学基金项目(项目编号:LH2020E013)。

摘　　要：Y区块属于二类油层,其油层发育、连通状况差异大,开采不均匀。为了更好地开发二类油层,需要进行变流度聚合物驱注入方式优化研究。运用数值模拟方法,进行水驱阶段历史拟合,研究剩余油分布情况,在此基础上设计“梯次降黏”“单一恒黏”“梯次增黏”3种方案进行变流度聚合物驱注入方式优化研究。结果表明:梯次降黏注入方式的效果最好,在水驱的基础上可提高采收率13.29%,比单一恒黏注入方式进一步提高采收率1.92%。研究成果对聚驱开发调整、实现聚驱优化提效有极大的借鉴意义。Block Y belongs to Class II oil layers,with significant differences in the development and connectivity of the oil layers,resulting in uneven exploitation.In order to better develop Class II oil reservoirs,it is necessary to conduct optimization research on the injection method of variable flow polymer flooding.The numerical simulation method was applied to fit the history of water flooding stage and study the distribution of remaining oil.Based on this,three schemes were designed to optimize the injection method of variable flow polymer flooding,including"cascade viscosity reduction""single constant viscosity"and"cascade viscosity increase".The results showed that the cascade viscosity reduction injection method had the best effect,which increased the recovery rate by 13.29%on the basis of water flooding,further increasing the recovery rate by 1.92%compared to a single constant viscosity injection method.The research results have great reference significance for the adjustment of polymer flooding development and the optimization and efficiency improvement of polymer flooding.

关 键 词：聚合物驱 数值模拟 梯次降黏 提高采收率 

分 类 号：TQ047[化学工程]