超稠油三元复合吞吐中CO_2溶解驱油实验研究  

Laboratory study of CO_2 dissolved flooding mechanism on ternary combination soaks in super heavy oil reservoir

作　　者：欧阳传湘[1,2] 马成[2] 吕露[2] 张伟[3] 

机构地区：[1]中国地质大学研究生院,湖北武汉430023 [2]长江大学石油工程学院 [3]中国石油大港油田公司采油一厂

出　　处：《石油地质与工程》2011年第6期121-123,10,共3页Petroleum Geology and Engineering

摘　　要：通过实验测定了不同温度压力下含CO2超稠油的粘度和不同含水率体系中的溶解度变化规律。研究结果表明,超稠油溶解CO2后,体积会膨胀增大,原油粘度降低;CO2在超稠油中的溶解度随压力增加而增加,随温度升高而降低;CO2在油水系统油中所溶解的比例随温度升高而减小,随压力升高而减小,随含水增加而下降;CO2在稠油中的溶解有利于提高超稠油采收率,且CO2溶解得越多越有利。As super heavy oil has high viscosity and less effective, studying the effect of CO2 dissolved flooding mechanism in ternary combination soaks of super heavy oils is a good way to improver super heavy oil recovery. Through laboratory study, the super heavy oil viscosity and CO2 solubility in super heavy oil and different WC liquid, under different temperature and pressure have been tested. The results showed that viscosity of super heavy oil was decreased significantly with increasing temperature, CO2 solubility increased with pressure increasing and temperature dropping. In oil-water system, CO2 solubility decreased with pressure, temperature and water cut dropping. Laboratory ternary combination soaks study showed that CO2 dissolved in water-oil system, especially dissolved in super heavy oil, which can improve the oil recovery.

关 键 词：稠油开发 三元复合吞吐 CO2溶解驱油 实验研究 

分 类 号：TE357[石油与天然气工程—油气田开发工程]