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首页> 外文会议>EAGE Conference Exhibition Incorporating SPE EUROPEC >An Integrated Modeling Approach for Characterizing Multiphase Flow, Chemical Transport, and Heat Transfer in Fractured Reservoirs
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An Integrated Modeling Approach for Characterizing Multiphase Flow, Chemical Transport, and Heat Transfer in Fractured Reservoirs

机译：用于描述裂缝性储层中多相流，化学物质输送和传热的综合建模方法

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摘要

Even with the significant progress made in modeling flow and transport in fractured rock in the last few decades, characterizing fractured reservoirs remains a great challenge. This is because of the inherent complexity within actual fractured reservoirs, from multiphase flow and transport to the spatial variability of the fracture network. To investigate coupled processes of fluid and heat flow and chemical isotopic transport in the highly heterogeneous, unsaturated fractured tuff of Yucca Mountain (a proposed underground repository site for storing U.S. high-level radioactive waste), we present an integrated modeling methodology. The proposed modeling approach integrates a wide variety of moisture, pneumatic, thermal, and geochemical isotopic field data into a comprehensive three-dimensional numerical model for modeling analyses. In particular, the results of this evaluation indicate that moisture data, such as water potential and liquid saturation in the rock matrix, are not sufficient to determine in situ percolation flux, whereas temperature and geochemical isotopic data provide better constraints to net infiltration rates and flow patterns. In addition, pneumatic data are found to be extremely valuable in estimating large-scale fracture permeability. The integration of hydrologic, pneumatic, temperature, and geochemical data into modeling analyses is thereby demonstrated to provide a practical modeling approach for characterizing flow and transport processes in complex fractured reservoirs.
机译：即使在过去几十年中在模拟裂缝岩石的流动和传输方面取得了重大进展，表征裂缝性储层仍然是一个巨大的挑战。这是因为从多相流和输运到裂缝网络的空间变异性，实际裂缝性储层的内在复杂性。为了研究尤卡山（一个拟建的用于存储美国高放射性废物的地下储存库）的高度异质，不饱和裂缝凝灰岩中流体和热流以及化学同位素传输的耦合过程，我们提出了一种集成的建模方法。拟议的建模方法将各种水分，气压，热力和地球化学同位素场数据整合到一个全面的三维数值模型中，以进行建模分析。特别是，该评估结果表明，水分数据（例如岩石基质中的水势和液体饱和度）不足以确定原位渗流通量，而温度和地球化学同位素数据对净渗透率和流量提供了更好的约束模式。另外，发现气动数据对于估计大规模裂缝渗透率非常有价值。从而证明了将水文，气压，温度和地球化学数据整合到建模分析中，可以为表征复杂裂缝性油藏的流动和运输过程提供实用的建模方法。

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