Abstract The capabilities to efficiently model the transport of mass and heat in geothermal reservoirs at supercritical conditions are necessary to support the efforts to explore and utilize supercritical hydrothermal systems, as well as to extend the utilization of existing geothermal fields at greater depths, where supercritical temperatures might be encountered. Similar capabilities are needed to model the flow in wells producing supercritical fluids, possibly in a coupled way with the reservoir flow. As a step in this direction, the new EOS2H module for sub-critical and steam-like super-critical H2O-CO2 mixtures has been linked to T2Well, the extension of the TOUGH2 numerical reservoir simulator developed for the transient modeling of fully coupled wellbore-reservoir flow. The resulting code is verified against simulations performed with other supercritical reservoir simulators and steady-state subcritical and supercritical wellbore flow simulations. It is then used to perform coupled wellbore-reservoir flow simulations at the well-sector scale relevant to the conditions found in well IDDP-1, Krafla, Iceland.

中文翻译：

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类蒸汽超临界地热系统井筒-储层耦合流动建模

摘要 有效模拟超临界条件下地热储层中质量和热量传输的能力对于支持探索和利用超临界热液系统的努力以及在更深的深度扩展现有地热田的利用是必要的，其中超临界温度可能会遇到。需要类似的能力来模拟生产超临界流体的井中的流动，可能以与储层流动耦合的方式。作为朝这个方向迈出的一步，用于亚临界和类似蒸汽的超临界 H2O-CO2 混合物的新 EOS2H 模块已与 T2Well 相关联，T2Well 是为全耦合井筒瞬态建模而开发的 TOUGH2 数值油藏模拟器的扩展。水库流量。生成的代码通过其他超临界油藏模拟器以及稳态亚临界和超临界井眼流动模拟进行的模拟进行验证。然后，它用于在与冰岛克拉夫拉的 IDDP-1 井中发现的条件相关的井段规模上执行耦合的井筒-储层流动模拟。