Geothermal modeling in complex geological systems with ComPASS

In deep geothermal reservoirs, faults and fractures play a major role, serving as regulators of fluid flow and heat transfer while also providing feed zones for production wells. To accurately model the operation of geothermal fields, it is necessary to explicitly consider objects of varying spatial...

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Vydáno v:Computers & geosciences Ročník 194; s. 105752
Hlavní autoři: Armandine Les Landes, A., Beaude, L., Castanon Quiroz, D., Jeannin, L., Lopez, S., Smai, F., Guillon, T., Masson, R.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 01.01.2025
Elsevier
Témata:
Deviated wells
Earth Sciences
Faulted and fractured reservoir
geometry
Geothermal reservoir modeling
heat transfer
mathematical models
Multi-component multi-phase flow
Sciences of the Universe
Unstructured meshes
Unstructured meshes
Faulted and fractured reservoir
Geothermal reservoir modeling
Deviated wells
Multi-component multi-phase flow
ISSN:0098-3004, 1873-7803
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Shrnutí:In deep geothermal reservoirs, faults and fractures play a major role, serving as regulators of fluid flow and heat transfer while also providing feed zones for production wells. To accurately model the operation of geothermal fields, it is necessary to explicitly consider objects of varying spatial scales, from the reservoir scale itself, to that of faults and fractures, down to the scale of the injection and production wells. Our main objective in developing the ComPASS geothermal flow simulator, was to take into account all of these geometric constraints in a flow and heat transfer numerical model using generic unstructured meshes. In its current state, the code provides a parallel implementation of a spatio-temporal discretization of the non-linear equations driving compositional multi-phase thermal flows in porous fractured media on unstructured meshes. It allows an explicit discretization of faults and fractures as 2D hybrid objects, embedded in a 3D matrix. Similarly, wells are modeled as one dimensional graphs discretized by edges of the 3D mesh which allows arbitrary multi-branch wells. The resulting approach is particularly flexible and robust in terms of modeling. Its practical interest is demonstrated by two case studies in high-energy geothermal contexts. •ComPASS is an open-source, evolutive, massively parallel platform for hydrothermal modeling.•ComPASS core is written in compiled high-performance and a Python API allows simulation setup.•ComPASS uses non-isothermal Coats formulation to solve multi-phase, multi-component Darcy flows.•ComPASS enables simulations of large and complex geothermal reservoirs involving highly non-linear problems.
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ISSN:0098-3004
1873-7803
DOI:10.1016/j.cageo.2024.105752