摘要
采集油田开发取心检查井聚驱主流线和分流线油藏的油砂样品,检测得到黏度、流度、含油饱和度、驱油效率等油藏实验参数,对剩余油的特征、流动性、开采潜力及控制因素等进行了研究。结果表明:剩余油的黏度、流度、含油饱和度、驱油效率等都呈现不同程度的非均质性特征,聚驱主流线较分流线油藏剩余油黏度、流度高,含油饱和度低,驱油效率高;油藏参数对驱油效率影响趋势和程度不同,主流线与分流线油藏剩余油的黏度、流度、孔隙度、渗透率与驱油效率的相关性差别较大;聚驱主流线油藏驱油效率受孔隙度和流度控制,聚驱分流线油藏驱油效率明显受孔隙度、流度和黏度控制;聚驱主流线油藏剩余油开采潜力高于分流线。
By means of collecting the oil-sand samples in the polymer-flooded main and diversion streamlines of the oilfield-development coring-detecting wells,the experimental parameters such as the viscosity,mobility,oil saturation and oil displaced efficiency were obtained,the remained oil characteristics,mobility,exploration potential and controlling factors were studied.The results show that the viscosity,mobility,oil saturation and oil displaced efficiency of the remained oil have different degrees of the heterogeneity.Compared with the diversion streamline oil reservoir,the viscosity and mobility of the main streamline reservoir are higher,the oil saturation is lower and the oil displaced efficiency is higher;the reservoir parameters influence the oil displaced efficiency in different trends and degrees,the correlation contrast of the viscosity,mobility,porosity and permeability between the main and diversion streamline remained oil reservoir is much more greater;the polymer-flooded main-streamline efficiency is controlled by the porosity and mobility,while the efficiency of the polymer-flooded diversion streamline reservoir is dominated by the porosity,mobility and viscosity;the production potential of the remained oil in the polymer-floo-ded main streamline reservoir is higher than that of the diversion streamline reservoir.
作者
白琳
BAI Lin(No. 6 Oil Production Plant of Daqing Oilfield Co Ltd., Daqing 163114, China)
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2018年第2期108-114,共7页
Petroleum Geology & Oilfield Development in Daqing
基金
中国石油天然气股份有限公司科学研究与技术开发项目"大庆探区非常规油气实验技术研究"(2012E-2603-06)
关键词
聚合物驱
主流线
分流线
剩余油黏度
流度
含油饱和度
驱油效率
polymer flooding
main streamline
diversion streamline
remained oil viscosity
mobility
oil saturation
oil displaced efficiency
