Modeling flow and heat transfer of fractured reservoir: Implications for a multi-fracture enhanced geothermal system

نویسندگان

چکیده

The EGS (enhanced geothermal system), particularly the multi-fracture EGS, is expected to be a key method effectively develop deep resource. accurate modeling of flow and heat transfer in an reservoir, fracture, challenging. Therefore, improved model considering LTNE (local thermal non-equilibrium) non-Darcy rough fracture proposed. Then, temperature fields matrix are comprehensively investigated. relationship between analyzed. LTE equilibrium) compared determine specific process fracture. difference Darcy studied evaluate actual behavior. influences smooth fractures discussed. results show that direct contribution production close 100%, while mainly plays indirect role as source. There noticeable local low-pressure region induced by fluid density change matrix, conduction, especially rock dominates matrix. intense convection leads rate up 5000 times with conduction causing marked breakthrough. represents velocity significantly lower than when high injection employed production. total extracted reaches 7.51%.

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ژورنال

عنوان ژورنال: Journal of Cleaner Production

سال: 2022

ISSN: ['0959-6526', '1879-1786']

DOI: https://doi.org/10.1016/j.jclepro.2022.132708