优势渗流通道灰色系统识别方法

The advantage seepage channel identification method by grey system

油气藏中地层流体的优势渗流通道的识别一直都是油气藏研究重点问题,且运用常规的方法只能评价单一因素对优势渗流通道的影响,而灰色系统可以对多个参考序列和比较序列进行关联分析,分析比较序列和参考序列的关联性,从而评价各个因素之间的关联程度。本文详细论述了邓氏关联度分析法的基本原理,并将其应用到如今还未涉及到的油气藏地层渗流的判定识别当中,通过计算各地质参数、生产参数与优势渗流通道之间的关联度和权重系数来评价各个因素对优势渗流通道影响的大小程度,在分析了各地质和生产的关键参数,确定了各个参数对于优势渗流通道评定的重要性的大小,同时利用权重系数建立优势渗流通道的数学模型,并利用甲型水驱曲线对灰色关联分析进行验证,通过本文的论述为优势渗流通道的识别提供新的方法。

The advantage seepage channel identification in the reservoir research has always been a key problem,and the conventional method can only be used to evaluate a single factor＇s influence to the advantage seepage channel, but grey correlation analysis of the system can be more than one reference sequences and relative sequences, by analyzing the correlation between sequence and the comparison of the reference sequence, to evaluate the degree of association between factors.This paper discusses the basic principle of Deng＇s relational analysis method,and its now not related to the oil and gas formation fluid flow,degree between the calculation of each geological parameters, production parameters and advantages of seepage channel relational degree and weight coefficient to evaluate the impact of various factors on the advantages seepage channel,in the analysis of the key parameters of Geology and production, determine the size of each parameter for evaluating the importance of preferential seepage channel,at the same time,based on weight coefficient establish mathematical model about the advantage seepage channel,and the use the influenza a water drive curve authenticating the grey relational analysis,to provide a new method to identify the advantages seepage channel.