Heat mining assessment for geothermal reservoirs in Mexico using supercritical CO2 injection

Pan, Cai‐Yuan; Chávez, Óscar; Romero, Carlos E.; Levy, Edward K.; Aguilar-Corona, Alicia; Rubio-Maya, Carlos

doi:10.1016/j.energy.2016.02.072

Cited by 50 publications

(20 citation statements)

References 8 publications

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“…Reservoir characteristic parameters for the base case simulation are shown in Table 2. The general reservoir parameters were based on measured data from some typical reservoirs in Mexico [19]. Initial reservoir conditions as well as injection conditions are included in Table 3, where the initial pressure is increased by 10 bar for every 100 m of depth.…”

Section: Conceptual Model and Griddingmentioning

confidence: 99%

“…Due to its thermofluid behavior under supercritical conditions, a geothermal system utilizing sCO 2 as the subsurface heat exchange fluid, in a naturally porous or fracture permeability-enhanced geologic formation, would provide improved heat extraction for low temperature geothermal resources at shallower subsurfaces below the bedrock. It has been suggested that CO 2 -based geothermal systems could operate at up to 1.5 times the electricity-production efficiency of conventional water-based systems [19]. Additionally, the transport and solubility properties of sCO 2 would also help reduce contamination, scaling and degradation of power equipment found in steam-based geothermal systems.…”

Section: Introductionmentioning

confidence: 99%

“…It was concluded in this study that CO 2 injection for geothermal production is a more attractive option than pure CO 2 storage due to its higher economic benefits in spite of that many technological and economic issues still need to be solved. Finally, a study by the authors of this paper [19] reports an assessment of the feasibility of using sCO 2 for heat mining for twenty-one geothermal sites in Mexico.…”

Section: Introductionmentioning

confidence: 99%

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Fully coupled wellbore-reservoir simulation of supercritical CO2 injection from fossil fuel power plant for heat mining from geothermal reservoirs

Pan

Romero

Levy

et al. 2018

Journal of CO2 Utilization

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The concept of injecting supercritical CO 2 (sCO 2) into a geothermal reservoir was computationally investigated to obtain an insight into the performance of such system in terms of the benefit of using CO 2 captured from fossil fuel power plants for geothermal heat mining. A fully coupled wellbore-reservoir system was simulated considering the flow of pure sCO 2 in an injection well, interaction of sCO 2 and water in a permeable reservoir, initially filled with water, and the flow of the two-phase mixture of sCO 2 and water in a production well. A base case simulation was performed. Results of this simulation indicate that this CO 2 application is capable of providing a good source of renewable energy. It was found that for the reservoir section used in this study (0.08 km 3) about 8-9 MW th could be extracted from the geothermal resource in a steady state fashion, for a lifetime of the wells of 30 years. This is approximately equivalent to 100 MW th /km 3. A sensitivity analysis of the coupled wellbore-reservoir system provided information on the impact of certain parameters on the performance of the integrated system. Mass flow rate and temperature of injected CO 2 , and reservoir permeability have a first order impact on the pressure management of the reservoir and the amount of heat mining from the CO 2-based geothermal reservoir. Additionally, CO 2 injection temperature has a large effect on the thermosiphon characteristic of this type of systems.

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Section: Conceptual Model and Griddingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fully coupled wellbore-reservoir simulation of supercritical CO2 injection from fossil fuel power plant for heat mining from geothermal reservoirs

Pan

Romero

Levy

et al. 2018

Journal of CO2 Utilization

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“…In a brine‐based geothermal reservoir, approximately 10% of the mass fraction of brine can be expected in the production stream, which prevents the produced fluid from being directly used in a CO 2 ‐based power cycle. Current research usually focuses on CO 2 sequestration technology, evaluation of the sCO 2 ‐based power‐cycle performance, and configuration design of geothermal heat mining . Therefore, it is necessary to conduct studies on sCO 2 ‐brine separation issues.…”

Section: Introductionmentioning

confidence: 99%

“…Current research usually focuses on CO 2 sequestration technology, 8,9 evaluation of the sCO 2 -based power-cycle performance, 14 and configuration design of geothermal heat mining. [15][16][17][18][19][20][21][22][23][24][25] Therefore, it is necessary to conduct studies on sCO 2 -brine separation issues. Current mature geothermal-generation technologies require steam-water separators for wet geothermal reservoirs worldwide.…”

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confidence: 99%

Performance analysis and optimization design of an axial-flow vane separator for supercritical CO₂ (sCO₂ )-water mixtures from geothermal reservoirs

et al. 2019

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Summary Supercritical CO2 (sCO2) has been proven to be a promising working fluid for geothermal heat mining, and the produced hot sCO2 can be directly used for power generation. However, the sCO2 produced from a brine‐based reservoir may contain a certain amount of water, preventing direct power‐cycle utilization. In this paper, an axial vane separator was designed to address the separation problem of sCO2 and water produced from geothermal reservoirs. First, the influences of operational and structural parameters on the separation performance were analyzed through numerical simulations. Five factors were selected to develop separation performance regression models by the response‐surface method (RSM). Finally, geometrical parameter optimization was applied to these RSM models. The results show that the guide vane area and the exhaust inlet are the main locations impacting the system pressure drop. The separation performance can be affected by many factors, including the guide blade outlet angle, number of vanes, hub diameter, length of the vortex tube, droplet size, and inlet velocity. The water‐droplet size and the number of vanes are the most critical factors affecting the separation efficiency. The inlet velocity, the number of vanes, and the hub diameter have a larger influence on the pressure drop of the separator. The optimization results indicate that the separation efficiency can reach 100% under certain operating conditions with a pressure drop no greater than 100 kPa.

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Combination of double and single cyclic pressure alternation technique to increase CO ₂ sequestration with heat mining in enhanced geothermal reservoirs by thermo‐hydro‐mechanical coupling method

Sun

Bongole

et al. 2020

Int J Energy Res

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Summary The rise in global temperature due to an unceasingly increase in non‐condensable gases (NCG) prompts more development of safe and economical CCUS (Carbon Capture Utilization and Storage) technologies. Carbon dioxide (CO2) sequestration with heat mining in deep enhanced geothermal systems (EGSs) is one of the promising methods to reduce CO2 emitted to the atmosphere. In this study, a cyclic alternation of pressures at the injection and production wells is applied in an EGS for heat mining together with CO2 deposit. Simultaneous alternation of the injection and production pressures can significantly increase the amount of CO2 sequestrated compared to applying a fixed pumping or withdrawing pressures at the injector and producer respectively. At the injection well, alternation in pumping pressures at high frequency (small interval of days) increased CO2 sequestration rate. Reducing the pumping frequency resulted in the lowering of the total amount of CO2 sequestrated, lesser than using a fixed pumping pressure. The alternation in pumping frequency has a direct relationship to the CO2 sequestration rate. The frequency of the injection and production pressures refers to the interval in days of the interchange in pressure between high to a low value and vice‐versa. Furthermore, simultaneous alternation of pressures at the injection and production wells respectively (double cyclic method) improved geothermal heat extraction efficiency, thus higher performance for both geothermal and CO2 sequestration projects.

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Heat mining assessment for geothermal reservoirs in Mexico using supercritical CO2 injection

Cited by 50 publications

References 8 publications

Fully coupled wellbore-reservoir simulation of supercritical CO2 injection from fossil fuel power plant for heat mining from geothermal reservoirs

Fully coupled wellbore-reservoir simulation of supercritical CO2 injection from fossil fuel power plant for heat mining from geothermal reservoirs

Performance analysis and optimization design of an axial-flow vane separator for supercritical CO₂ (sCO₂ )-water mixtures from geothermal reservoirs

Combination of double and single cyclic pressure alternation technique to increase CO ₂ sequestration with heat mining in enhanced geothermal reservoirs by thermo‐hydro‐mechanical coupling method

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Heat mining assessment for geothermal reservoirs in Mexico using supercritical CO2 injection

Cited by 50 publications

References 8 publications

Fully coupled wellbore-reservoir simulation of supercritical CO2 injection from fossil fuel power plant for heat mining from geothermal reservoirs

Fully coupled wellbore-reservoir simulation of supercritical CO2 injection from fossil fuel power plant for heat mining from geothermal reservoirs

Performance analysis and optimization design of an axial-flow vane separator for supercritical CO2 (sCO2 )-water mixtures from geothermal reservoirs

Combination of double and single cyclic pressure alternation technique to increase CO 2 sequestration with heat mining in enhanced geothermal reservoirs by thermo‐hydro‐mechanical coupling method

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Product

Resources

About

Performance analysis and optimization design of an axial-flow vane separator for supercritical CO₂ (sCO₂ )-water mixtures from geothermal reservoirs

Combination of double and single cyclic pressure alternation technique to increase CO ₂ sequestration with heat mining in enhanced geothermal reservoirs by thermo‐hydro‐mechanical coupling method