摘要
以大港油田港西三区储层和流体为实验对象,开展了聚合物驱合理黏度比实验研究。结果表明:随黏度比(μp/μo)、岩心平均渗透率和渗透率变异系数增加,聚合物驱采收率增幅扩大;随原油黏度增大,聚合物驱采收率增幅降低。从技术效果和经济效益两方面考虑,聚合物驱合理黏度比(μp/μo)约为1。
According to the reservoir characteristics,development status and existing problems in polymer flooding in Block 3 of Gangxi area in Dagang Oilfield,based on the deep research of the polymer flooding mechanism and theory,using the theories of physical chemistry,polymer materials science and reservoir engineering as guidance,the reasonable viscosity ratio( μP/μo) of polymer flooding in the block is studied by means of physical simulation experiment under the specific reservoir and fluid condition. The results show that,the increment of oil recovery of polymer flooding increases with the increase of viscosity ratio( μP/μo),core average permeability and permeability variation coefficient,and it decreasee with the increase of crude oil viscosity. Comprehensively considering technical and economic effects,the reasonable viscosity ratio( μP/μo) in polymer flooding should be about1. The research results will play an important guiding role to improving the effect of polymer flooding in Block 3 of Gangxi area in Dagang Oilfield.
出处
《西安石油大学学报(自然科学版)》
CAS
北大核心
2014年第5期70-74,8,共5页
Journal of Xi’an Shiyou University(Natural Science Edition)
基金
中国石油重大矿场试验项目"高浓度聚驱与聚/表二元驱特征研究"(编号:DGYT-2012-JS-593)资助
关键词
聚合物驱
合理黏度比
驱油效果
经济效益
大港油田
polymer flooding
reasonable viscosity ratio
displacement effect
economic benefit
Dagang Oilfied