基于分形理论计算相渗分流量曲线  

RELATIVE PERMEABILITY FRACTIONAL FLOW CURVE CALCULATION BASED ON FRACTAL THEORY

作　　者：刘西雷[1] 

机构地区：[1]中国石化股份胜利油田分公司地质科学研究院,山东东营257015

出　　处：《大庆石油地质与开发》2015年第1期59-62,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项"胜利油田特高含水期提高采收率技术研究"(2011ZX05011)部分研究成果

摘　　要：分流量方程是油田基础研究工作中的一项重要内容,尤其是在油藏工程、水驱油理论以及油藏数值模拟计算等领域,应用十分广泛。基于分形理论,通过详细分析相对渗透率测定实验数据,认为以含水饱和度(S_w)为标度,油水相对渗透率比值(K_(ro)/K_(rw))作为测量值具有分形特征,并基于此提出了一种新的分流量方程的拟合计算方法。该方法与传统油层物理学拟合计算的分流量方程相比较能在中低含水饱和度范围内大幅度提高产水率拟合精度,为油藏动态分析、水驱油理论与实验应用以及油藏数值模拟计算等提供可靠的基础资料,指导油田高效开发。Fractional flow equation is an important subject in oilfield basic research work, especially widely ap- plied the fields of reservoir engineering, waterflooding theory, reservoir numerical simulation calculation and so on. Based on fractal theory, through detailed analysis of the detected relative permeability experimental data, it is thought that regarding the water saturation Sw as the calibrating scale and the relative permeability ratio Kro/Krw as the measuring value have the fractal characteristics. And furthermore, on the basis of the above, a new matching and calculating method for the fractional flow equation is proposed. Compared with the fractional flow equation matched and calculated by the traditional reservoir physics, the method can greatly improve the matched precision in the ranges of medium-low water saturation, provide reliable data for reservoir dynamic analyses, waterflooding theory and experiment and application, reservoir numerical simulation calculation and so forth, thus the high-effi- ciency development of the oilfield can be guided.

关 键 词：分形理论 分流量方程 含水率 相对渗透率 

分 类 号：TE312[石油与天然气工程—油气田开发工程]