摘要
以齐40块蒸汽驱为例,应用CMG数值模拟软件,建立蒸汽驱基础模型,研究了各因素对蒸汽驱开发效果的影响。结果表明,采出程度和油汽比随正韵律油藏渗透率变异系数的增大逐渐增加,当渗透率变异系数超过0.7后采出程度和油汽比减小;采出程度和油汽比随反韵律油藏渗透率变异系数的增大逐渐减小;截止到蒸汽突破时,采出程度随倾角的增大逐渐减小;采出程度和油汽比随隔层厚度的增加逐渐减小;无论油藏有无隔层情况下,射开下部1/3位置时,开发效果最好;平面渗透率各向异性越强,开发效果越差;分层注汽级数越多,开发效果越好。
By taking steam stimulation of Qi-40 block as an example,by applying CMG numerical simulation software,the base model of steam drive has been established,and the impacts of various factors on development effects have been analyzed.The results indicate with the gradual increase of the positive rhythm reservoir permeability coefficient,the recovery degree and oil-steam ratio increase.When the permeability coefficient of variation is over 0.7,the recovery degree and the oil-steam ratio decrease.With the gradual increase of the positive rhythm reservoir permeability coefficient,the recovery degree and oil-steam ratio decrease.At the steam breakthrough,with the increases of dip angle,the recovery degree decreases,with the increases of the barrier thickness,the recovery degree and oil-steam ratio decrease.Regardless of whether there is the compartment or not,then devel-opment effect is the best when 1/3 position has been shot.When the plane permeability anisotropy is stronger,the development effect is poorer.When the steam injection stratified series are more,the development effects are better.
出处
《石油地质与工程》
CAS
2014年第5期106-109,158,共4页
Petroleum Geology and Engineering
基金
国家科技重大专项"提高稠油蒸汽驱效率技术"(2011ZX05012-003)
关键词
齐40块
蒸汽驱
数值模拟
开发效果
Qi-40 block
steam flooding
numerical simulation
development effects
