中低渗稠油油藏聚合物驱适应性分析  

Adaptability analysis of polymer flooding in mid-low permeability heavy oil reservoirs

作　　者：蒋平 周翔宇[2] 袁玉峰 王彪[3] 余晓玲[3] 李隆杰[2] 唐登宇 张贵才 葛际江[1,2] 裴海华 JIANG Ping;ZHOU Xiangyu;YUAN Yufeng;WANG Biao;YU Xiaoling;LI Longjie;TANG Dengyu;ZHANG Guicai;GE Jijiang;PEI Haihua(Key Laboratory of Unconventional Oil and Gas Development, Ministry of Education (China University of Petroleum(East China)), Qingdao 266580, China;School of Petroleum Engineering in China University of Petroleum(East China),Qingdao 266580,China;Jiangsu Oilfield Branch of SINOPEC, Yangzhou 225009, China)

机构地区：[1]非常规油气开发教育部重点实验室(中国石油大学(华东)),山东青岛266580 [2]中国石油大学(华东)石油工程学院,山东青岛266580 [3]中国石化江苏油田分公司工程院,江苏扬州225009

出　　处：《中国石油大学学报（自然科学版）》2021年第3期166-170,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中央高校基本科研业务费专项(19CX02017A);国家自然科学基金项目(51474234);霍英东高等院校青年教师基金基础性研究课题(151049)。

摘　　要：针对江苏油田中低渗普通稠油油藏开展聚合物驱适用性实验和分析。基于达西定律测定聚合物溶液和原油有效黏度,研究渗流速度对聚合物的有效黏度的影响规律,在聚合物流体力学半径表征的基础上,通过与岩心孔隙结构关联,明确造成聚合物注入压力升高的主要原因,进而以聚合物与原油的有效黏度为依据,评价不同黏度比下聚合物驱提高采收率的效果。结果表明,对于中低渗储层,可通过测定聚合物流体力学半径筛选适合区块孔喉尺度的聚合物质量浓度上限,以聚合物有效黏度与原油有效黏度比大于0.2作为聚合物质量浓度的下限。The applicability experiment and analysis of polymer flooding were carried out for mid-low permeability heavy oil reservoirs in Jiangsu Oilfield.The effective viscosity of polymer solution and crude oil were determined on the basis of the Darcy law.Then,the influence of seepage velocity on the effective viscosity of polymer was investigated.Based on the characterization of the hydrodynamic radius of polymer,the main reasons for the increase of polymer injection pressure were identified by correlation with core pore structure,and then the EOR effects of polymer flooding with different viscosity ratios were evaluated according to the effective viscosity of polymer and crude oil.The results show that,the upper limit of polymer concentration can be selected by measuring the hydrodynamic radius of polymer for mid-low permeability reservoirs.And the lower limit of polymer concentration is that the effective viscosity ratio of polymer to crude oil is greater than 0.2.

关 键 词：中低渗油藏 普通稠油 聚合物驱 有效黏度 提高采收率 

分 类 号：TE357[石油与天然气工程—油气田开发工程]