裂缝性油藏等效渗透率张量计算及表征单元体积研究  

Calculation of equivalent permeability tensor and study on representative element volume for modeling fractured reservoirs

作　　者：李亚军[1] 姚军[1] 黄朝琴[1] 张凯[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266555

出　　处：《水动力学研究与进展（A辑）》2010年第1期1-7,共7页Chinese Journal of Hydrodynamics

基　　金：国家973计划(2006CB202404);教育部111计划"油气田开发工程创新引智创新引智基地"项目资助

摘　　要：给出了利用等效渗透率张量来确定裂缝性油藏表征单元体积的方法。根据裂缝系统属性参数的统计资料,利用裂缝网络模拟技术建立了离散裂缝网络模型。建立了求解裂缝性油藏等效渗透率张量的数学模型,并给出了边界元求解方法。在此基础上,提出裂缝性油藏表征单元体积的确定方法,分析了裂缝实际分布及其属性参数对研究区域渗透特性和表征单元体积的影响。研究结果为裂缝性油藏渗流分析的参数确定提供了理论依据。The methodology is presented to predict the representative element volume （REV） of fractured reservoirs by calculating equivalent permeability tensors （EPT） in this paper. Based on the technology of fractured network simulation, discrete fracture networks of fractured reservoirs were realized using fracture statistics data. The mathematical model was established for calculating EPT with the boundary element method. The estimation method was presented to determine REV size of fractured reservoir. The influence of fracture properties and distribution on the permeability characteristic and REV size was analyzed. The result provides theoretical evidence to determine the parameters when analyzing the flow in fractured reservoirs.

关 键 词：裂缝性油藏 离散裂缝网络 等效连续介质 渗透率张量 表征单元体积 边界元方法 

分 类 号：TE344[石油与天然气工程—油气田开发工程]