作　　者： ; ;

机构地区： 中国石油大学北京石油工程学院石油工程教育部重点实验室

出　　处： 《内蒙古石油化工》 2009年第10期30-31,共2页

摘　　要： 目前油田常规注水开发难度不断增加,应用注CO2气驱技术能够有效解决注水困难等问题,提高了原油采收率。在室内实验研究的基础上,应用数值模拟技术优化了注气方式及注气时机;分析了油藏地质参数对注CO2气驱提高采收率的影响。研究表明:水气交替注入方式更优;非均质性越强,开发效果越差;油藏渗透率越大、含油饱和度越高、原油粘度越低,注CO2驱油效果越好。 The traditional water flood development of reservoir has been more and more difficult, which can be resolved by CO2 flooding, and the oil recovery is raised. Based on laboratory investigation in house, the thesis optimizes the gas injection methods and injecting time, analyses the influence of geologic reservoir parameters on enhanced oil recovery by COw flooding. The research demonstrates that water alternating gas is the optimum style,and that the CO2 gas displacement efficiency decreases with the reservoir heterogeneity and the oil viscosity, and increases with the permeability and the oil saturation.

关 键 词： 驱油 数值模拟 提高采收率 地质参数 影响因素

领　　域： [石油与天然气工程] [石油与天然气工程]