层间非均质油藏提液效果数值模拟  

Numerical simulation of development effect of enhanced liquid production in heterogeneous reservoirs

作　　者：冯其红[1] 王守磊[1,2] 白军伟 韩晓冬[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中海油研究总院,北京100027 [3]中国石化胜利油田分公司胜利采油厂,山东东营257051

出　　处：《油气地质与采收率》2013年第3期49-52,114,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"海上稠油油藏高含水期剩余油分布机理研究"(2011ZX05024-002-002)

摘　　要：为了描述提液措施的作用机理,基于黑油模型,考虑启动压力的影响,建立了三维三相数学模型,并采用隐压显饱法进行求解。通过建立概念模型,对渗透率级差、提液幅度、提液时机和初始采液速度对提液效果的影响进行了研究。结果表明,随着渗透率级差的增大,提液提高采收率幅度先增加后减小,渗透率级差为3～7时提液效果最佳;在一定提液幅度下,随着渗透率级差的增大,提液效果逐渐变差,随着提液幅度的增加,提液效果逐渐变好;提液时机越早,越有利于发挥低渗透层的生产能力,提液效果越好;初始采液速度大,渗透率级差大的提液效果好。In order to describe the mechanism and characteristics of enhanced liquid production in heterogeneous reservoirs, and based on the traditional black oil model, a three-dimensional, three-phase mathematical model, which takes threshold pressure gradient into account, is put forward. And, a corresponding numerical simulator is developed, in which the Implicit Pressure Explicit Saturation Method is used. Through establishing the conceptual models, the influences of permeability ratio (the ratio of highest permeability to lowest permeability), the amplitude and time of enhanced liquid production, and the initial liquid production rate are studied. The results show that: under certain amplitude of enhanced liquid production, the development effect of enhanced liquid production becomes worse with the increase of permeability ratio. The development effect of enhanced liquid production gets better while the amplitude of enhanced liquid production increases. The earlier of enhanced liquid production, the better development effect is. When the initial liquid production rate is larger, the development effect of enhanced liquid production for the model with larger permeability ratio is better.

关 键 词：提液效果 启动压力 数值模拟 渗透率级差 初始采液速度 

分 类 号：TE319[石油与天然气工程—油气田开发工程]