油气储层流动单元划分标准的探讨  

Discussion on Classification Criteria of Reservoir Flow Unit

作　　者：高博禹[1] 彭仕宓[1] 龚宏杰[1] 岳湘安[1] 

机构地区：[1]石油大学(北京)资源与信息学院,北京昌平102249

出　　处：《中国矿业大学学报》2005年第1期82-86,共5页Journal of China University of Mining & Technology

基　　金：国家重大基础研究前期研究专项(2002CCA00700)

摘　　要：根据对大量岩心样品的统计分析,研究了流动层指数(flowzoneidex,Ifz)的基础定义和物理意义.结果认为:Ifz值相近的岩心样品具有较大的孔隙度和大的渗透率变化范围,但不一定属于同一类流动单元.Ifz值并不能准确的表征影响流体流动的岩石物理性质,单纯采用Ifz值作为划分储层流动单元的标准是值得商榷的.采用渗透率、层内渗透率纵向非均质参数(变异系数、突进系数、极差)、孔隙度和束缚水饱和度等参数作为标准划分流动单元并应用该方法研究了蒙古林砾岩油藏储层,结果表明:这些参数能够较为准确的描述储层内部油水运动规律相似的储集带.In accordance with the I_(fz) deduction process from Kozeny-Carman formulation, the fundamental concept and physical significance of I_(fz) were studied based on the statistical analysis of core data. The result indicates that the core samples with similar I_(fz) value and a wide range of porosity and permeability do not always belong to the same flow unit. It is questioned that the I_(fz) value is used as a unique criteria to classify flow unit because it cannot accurately describe the physical characteristics of cores. Parameters such as permeability, vertical permeability, heterogeneity parameters (variation factor, abrupt injection factor, gradation), porosity, and the initial water saturation are used to classify flow unit. The application of this method in Menggulin conglomerate reservoir shows that these parameters can exactly describe the reservoir zone within which the oil and water have a similar flow rule.

关 键 词：流动单元 渗透率 砾岩油藏 岩心 油气储层 非均质 孔隙度 储集 岩石物理性质 束缚水饱和度 

分 类 号：TD712[矿业工程—矿井通风与安全] P618[天文地球—矿床学]