低渗透油藏储层多尺度裂缝的建模方法研究

发布时间：2018-08-26 21:07

【摘要】：低渗透油藏储层中流体的流动是一个横跨致密基质、天然裂缝、水压裂缝、井筒的典型多尺度力学行为明确油藏储层中裂缝的尺度分级,建立精确的低渗透储层多尺度裂缝模型,探究多尺度之间的级联耦合作用过程和内在联系,是低渗透油藏渗流研究的关键,也是实现超低渗透油藏有效开发的重要理论基础。根据复杂学科的多尺度关联方法及油藏多尺度裂缝建模的相关文献资料,明确提出了油藏中多尺度裂缝的尺度分级标准,总结归纳了多尺度关联方法和低渗透油藏储层多尺度裂缝模型,分析了按连续介质思想和离散介质思想构建的几种代表模型的优劣。在此基础上,提出了储层裂缝多尺度建模的建议,并指出了低渗透油藏多尺度裂缝建模研究的趋势。
[Abstract]:The flow of fluid in low permeability reservoir is a typical multi-scale mechanical behavior across dense matrix, natural fracture, hydraulic fracture and wellbore. Establishing accurate multiscale fracture model of low permeability reservoir and exploring the cascade coupling process and internal relation between multiple scales are the key to the study of percolation in low permeability reservoir and the important theoretical foundation to realize the effective development of ultra low permeability reservoir. According to the multi-scale correlation method of complex subject and the related literature data of multi-scale fracture modeling in reservoir, the scale classification standard of multi-scale fracture in reservoir is clearly put forward. The multiscale correlation method and multiscale fracture model of low permeability reservoir are summarized, and the advantages and disadvantages of several representative models based on continuum and discrete medium are analyzed. On this basis, the paper puts forward the suggestion of multi-scale modeling of reservoir fracture, and points out the trend of multi-scale fracture modeling in low permeability reservoir.
【作者单位】：西南石油大学"油气藏地质及开发工程"国家重点实验室;西南石油大学地球科学与技术学院;武汉轻工大学多孔介质力学研究所;
【基金】：国家科技重大专项(2017ZX05013006)
【分类号】：P618.13

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