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首页> 外文会议>EAGE Conference Exhibition >An Integrated Modeling Approach for Characterizing Multiphase Flow, Chemical Transport, and Heat Transfer in Fractured Reservoirs (SPE-106996)
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An Integrated Modeling Approach for Characterizing Multiphase Flow, Chemical Transport, and Heat Transfer in Fractured Reservoirs (SPE-106996)

机译：用于表征多相流，化学输送和裂缝储层热传递的集成建模方法（SPE-106996）

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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 variabilityof 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 high-level radioactive waste of the U.S.), 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. The model is then used for the evaluation of unsaturated percolation fluxes and flow patterns, which is the most important goal of the site characterization. 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：即使在过去的几十年中在骨折岩石中的模拟和运输方面取得了重大进展，表征骨折水库仍然是一个巨大的挑战。这是因为实际裂缝储层内的固有复杂性，从多相流动和运输到裂缝网络的空间变化。为了研究含有高度异质，不饱和骨质凝固的含流体和热流量和化学同位素输送的耦合过程（用于储存美国高级放射性浪费的拟议的地下储存网站），我们介绍了一种综合建模方法。所提出的建模方法将各种水分，气动，热和地球化学同位素数据集成为综合三维数值模型，用于建模分析。然后，该模型用于评估不饱和渗透助熔助熔剂和流动模式，这是现场表征的最重要目标。特别地，该评估的结果表明，岩石基质中的水分和液体饱和度（例如水势和液态饱和）不足以确定原位渗透通量，而温度和地球化学同位素数据为净渗透率和流量提供更好的限制模式。此外，发现气动数据在估计大规模的骨折渗透率方面是极为宝贵的。由此证明了用于建模分析中的水文，气动，温度和地球化学数据的整合，以提供用于在复杂的裂缝储层中的流动和运输过程中的特征和运输过程的实用建模方法。

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