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

被引：0

作者：

Liu Yi Fei ^{[1
]}

Fan Yao ^{[1
]}

机构：

[1] Xian Petr Univ, Dept Petr Engn, Xian 710065, Peoples R China

来源：

FLOW IN POROUS MEDIA - FROM PHENOMENA TO ENGINEERING AND BEYOND | 2009年

关键词：

Heavy oil; Steam drive; N-2; CO2; Non-Newtonian;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

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,N-2 and CO2) drive, compound gas(steam and N-2) 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.

引用

页码：508 / 513

页数：6

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