摘要
针对水驱油藏降黏驱过程中储层原油动用规律不清晰的问题,采用多功能岩心实验装置和CT扫描仪,进行了层间渗透率差异储层的剩余油水驱转降黏驱的物理模拟实验。结果表明:层间渗透率差异储层采收率随渗透率的提高而提高,渗透率的提高更有利于高渗储层动用率的提高。层间渗透率差异储层模型均主要动用高渗透层原油,高渗透层原油动用率较高。渗透率差小的层间渗透率差异模型,上下层采出率差距较小;随渗透率差的增大,上下层采出率差距增大。研究结果可为水驱稠油油藏降黏驱剩余油的挖潜和采收率标定提供借鉴。
In order to solve the problem that the law of oil production in water-driven reservoir is not clear in the process of viscous-lowering flooding,the physical simulation experiment of transforming residual oil-water flooding into viscous-lowering flooding was carried out by using multi-functional core test device and CT scanner. Results showed that the recovery efficiency of reservoirs with different interlayer permeability increased with the increase of permeability,and the increase of permeability was more conducive to the increase of high permeability reservoir production rate. The reservoir models with different interlayer permeability mainly used high permeability reservoir oil,and the high permeability reservoir oil production rate was higher. In the permeability differential model with small permeability difference,the recovery rate difference between the upper and lower layers was small. With the increase of permeability difference,the recovery rate difference between the upper and lower layers increased. The research results can be used as reference for potential exploitation and recovery factor calibration of remaining oil in viscosive-reducing drive in heavy oil reservoirs by water flooding.
作者
王玲
徐宏光
蒲草
蔡韵凝
WANG Ling;XU Hongguang;PU Cao;CAI Yunning(Nanchong Vocational and Technical College,Nanchong 637000,China;Petroleum Engineering Research Insti-tute of Sinopec Shengli Oilfield Company,Dongying 257000,China;Working Station for Postdoctoral Scientific Research,Shengli Oil Administration,Dongying 257000,China)
出处
《精细石油化工进展》
CAS
2022年第4期20-22,共3页
Advances in Fine Petrochemicals
关键词
水驱稠油
降黏驱
层间渗透率差异储层
剩余油分布
油田采收率
water flooding heavy oil
viscosity reduction drive
differential interlayer permeability reservoir
distribution of remaining oil
oil recovery rate
