High-temperature and high-pressure PVT measurements and derived thermodynamic properties of geothermal fluids from East Turkey

Talybov, M. A.; Abdulagatov, Ilmutdin M.

doi:10.1016/j.geothermics.2021.102125

Cited by 5 publications

(2 citation statements)

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“…Compared to water, the density and viscosity of CO 2 more greatly varied with pressure and temperature, and specific values were calculated using CMG Winprop 2023. 20.…”

Section: Materials Properties and Boundary Conditionsmentioning

confidence: 99%

“…A porous media model for water flow in the EGS was developed for heat transfer characterization and shows that a triple-well set has better performance [19]. Experiments were performed to measure water properties under geothermal reservoir conditions to accurately calibrate Tai-type parameters [20]. Compared to water, the advantages of CO 2 include lower viscosity, higher compressibility, no mineral interactions, and CO 2 sequestration in the reservoir [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Heat Extraction Evaluation of CO2 and Water Flow through Different Fracture Networks for Enhanced Geothermal Systems

Sun,

Song,

Zhang

et al. 2023

Energies

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Enhanced geothermal system (EGS) technologies have been developed to improve geothermal energy production from hot dry rock (HDR). In this study, discrete fracture network models for geometric topological networks that consider different parameters (the fracture density and the fracture length index) were built on the basis of fractal geometry theory. The heat extraction processes of CO2 and water as the working fluid through different discrete fracture networks were simulated with the application of the thermal–hydraulic–mechanical (THM) coupled method. A series of sensitivity analyses were carried out to reveal the influences of fracture parameters on heat transfer processes. Based on the simulation results, heat extraction efficiencies and temperature distributions in the reservoir of CO2 and water as the working fluid were compared, which showed that CO2 as the working fluid can bring a faster thermal breakthrough. It was found that the fracture length index a = 2.5 and the fracture density I = 5.0 can provide the highest heat extraction rate compared with other cases. This study provides a detailed analysis of fracture parameters and working fluids, which will contribute to the optimized management of geothermal energy production.

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“…Compared to water, the density and viscosity of CO 2 more greatly varied with pressure and temperature, and specific values were calculated using CMG Winprop 2023. 20.…”

Section: Materials Properties and Boundary Conditionsmentioning

confidence: 99%