为了稳健地规划和实施碳捕获与封存 (CCS) 项目，必须通过高保真流动模拟，结合各种假设的地下情景，全面评估目标储层的容量和注入能力以及盖层地层的遏制能力。然而，在实际的流动模拟框架中，将众多具有高传导性和复杂多相置换过程的断层纳入其中是一项挑战。在完整论文的研究中，作者提出了一种使用嵌入式离散裂缝模型 (EDFM) 模拟二氧化碳流经传导断层的有效工作流程，并回顾了其在全油田评估中的应用。
EDFM 最初是为了在流动模拟中精确模拟各种尺度的离散裂缝而提出的。在本研究中，传导断层被假设为较长的离散裂缝。
举例来说，我们可以设想一个油藏模型，其中有两个相交的导电断层（离散裂缝）。额外的网格块是通过沿着油藏网格块的单元边界对导电断层进行离散化来定义的。
For the robust planning and implementation of carbon capture and storage (CCS) projects, capacity and injectivity of target reservoirs and containment capability of caprock formations must be evaluated thoroughly through high-fidelity flow simulations with various hypothetical subsurface scenarios. However, it is challenging to incorporate numerous faults with high conductivity and complex multiphase displacement processes in a practical framework of flow simulations. In the study featured in the complete paper, the authors present an efficient workflow using an embedded discrete fracture model (EDFM) to simulate CO2 flow through conductive faults and review its application to full-field scale assessment.
EDFM originally was proposed to explicitly model discrete fractures of various scales in flow simulations. In this study, conductive faults were assumed to be long discrete fractures.
As an example, one may imagine a reservoir model with two intersecting conductive faults (discrete fractures). Extra gridblocks are defined by discretizing conductive faults by the cell boundaries of the reservoir gridblock.
