Research on High Temperature Compound Gas Drive Oil Displacement Mechanism for Heavy Oil Reservoirs

摘要：

Based on the analysis of the viscosity-temperature characteristics and rheological characteristics of heavy oil, this paper systematicaly investigates seepage characteristics and oil displacement mechanism of exploiting heavy oil by steam drive and high temperature compound gas drive. The experimental results indicate that, according to the displacement efficiency from strong to weak, each displacement method can be ranked as following: compound gas (steam,N2 and CO2) drive, compound gas(steam and N2) drive, compound gas (steam and CO2) drive, steam drive. The main stimulation mechanism of high temperature compound gas drive is to reduce viscosity by heating, to improve the sweep efficiency, to improve oil phase permeability and oil-water mobility ratio, to maintain and enhance formation pressure, to expand heavy oil volume and so on. The results of this research provide theoretical criterion for application of high temperature compound gas drive in heavy oil field.

关键词： Heavy oil Steam drive N2 CO2 Non-Newtonian

作者: LIU YiFei FAN Yao

作者单位: Department of Petroleum Engineering, Xian Petroleum University, P.R.China, 710065

会议类型: 国际会议

会议名称: 2009 International Forum on Porous Flow and Applications(第十届全国渗流力学学术会议)

会议地点: 武汉

会议语种:英文

页码: 508-513

在线出版日期: 2009-04-26（万方平台首次上网日期，不代表论文的发表时间）