COMPARISON OF SUPERCRITICAL CO2 WITH WATER AS GEOFLUID IN GEOTHERMAL RESERVOIRS WITH NUMERICAL INVESTIGATION USING FULLY COUPLED THERMO-HYDRO-GEOMECHANICAL MODEL

Manojkumar Gudala; Suresh Kumar Govindarajan; Bicheng Yan; Shuyu Sun

doi:10.1115/1.4055538

COMPARISON OF SUPERCRITICAL CO2 WITH WATER AS GEOFLUID IN GEOTHERMAL RESERVOIRS WITH NUMERICAL INVESTIGATION USING FULLY COUPLED THERMO-HYDRO-GEOMECHANICAL MODEL

Manojkumar Gudala, Suresh Kumar Govindarajan, Bicheng Yan, Shuyu Sun

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

In the present work, fully coupled dynamic thermo-hydro-mechanical (THM) model was employed to investigate the advantage and disadvantages of supercritical CO2 (SCCO2) over water as geofluids. Low-temperature zone was found in both SCCO2-EGS and water-EGS systems, but spatial expansion is higher in water-EGS. Although, the spatial expansion of SCCO2 into the rock matrix will help in the geo-sequestration. The expansion of stress and strain invaded zones were identified significantly in the vicinity of fracture and injection well. SCCO2-EGS system is giving better thermal breakthrough and geothermal life conditions compared to the water-EGS system. Reservoir flow impedance (RFI) and heat power are examined, and heat power are high in the water-EGS system. Minimum RFI is found in the SCCO2-EGS system at 45°C and 0.05 m/s. Maximum heat power for SCCO2-EGS was observed at 35°C, 20 MPa, and 0.15 m/s. Therefore, the developed dynamic THM model is having greater abilities to examine behaviour of SCCO2-EGS and water-EGS systems effectively. The variations occur in the rock matrix and the performance indicators are dependent on the type of fluid, injection/production velocities, initial reservoir pressure, injection temperature. The advantages of SCCO2-EGS system over the water-EGS system, providing a promising result to the geothermal industry as geofluid.

Original language	English (US)
Pages (from-to)	1-33
Number of pages	33
Journal	Journal of Energy Resources Technology
DOIs	https://doi.org/10.1115/1.4055538
State	Published - Sep 7 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-09-09
Acknowledged KAUST grant number(s): BAS/1/1351-01-01, BAS/1/1423-01-01, URF/1/4074-01-01
Acknowledgements: Manojkumar Gudala and Suresh Kumar Govindarajan gratefully acknowledge financial support from the Indian Institute of Technology–Madras; Manojkumar Gudala and Bicheng Yan thanks for the Research Funding from King Abdullah University of Science and Technology (KAUST), Saudi Arabia through the grants BAS/1/1423-01-01; Manojkumar Gudala and Shuyu Sun thanks for the Research Funding from King Abdullah University of Science and Technology (KAUST), Saudi Arabia through the grants BAS/1/1351-01-01 and URF/1/4074-01-01.

ASJC Scopus subject areas

Energy Engineering and Power Technology
Mechanical Engineering
Geochemistry and Petrology
Fuel Technology
Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1115/1.4055538

https://repository.kaust.edu.sa/bitstream/10754/681031/1/jert-21-2093%20%281%29.pdf

Cite this

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title = "COMPARISON OF SUPERCRITICAL CO2 WITH WATER AS GEOFLUID IN GEOTHERMAL RESERVOIRS WITH NUMERICAL INVESTIGATION USING FULLY COUPLED THERMO-HYDRO-GEOMECHANICAL MODEL",

abstract = "In the present work, fully coupled dynamic thermo-hydro-mechanical (THM) model was employed to investigate the advantage and disadvantages of supercritical CO2 (SCCO2) over water as geofluids. Low-temperature zone was found in both SCCO2-EGS and water-EGS systems, but spatial expansion is higher in water-EGS. Although, the spatial expansion of SCCO2 into the rock matrix will help in the geo-sequestration. The expansion of stress and strain invaded zones were identified significantly in the vicinity of fracture and injection well. SCCO2-EGS system is giving better thermal breakthrough and geothermal life conditions compared to the water-EGS system. Reservoir flow impedance (RFI) and heat power are examined, and heat power are high in the water-EGS system. Minimum RFI is found in the SCCO2-EGS system at 45°C and 0.05 m/s. Maximum heat power for SCCO2-EGS was observed at 35°C, 20 MPa, and 0.15 m/s. Therefore, the developed dynamic THM model is having greater abilities to examine behaviour of SCCO2-EGS and water-EGS systems effectively. The variations occur in the rock matrix and the performance indicators are dependent on the type of fluid, injection/production velocities, initial reservoir pressure, injection temperature. The advantages of SCCO2-EGS system over the water-EGS system, providing a promising result to the geothermal industry as geofluid.",

author = "Manojkumar Gudala and Govindarajan, {Suresh Kumar} and Bicheng Yan and Shuyu Sun",

note = "KAUST Repository Item: Exported on 2022-09-09 Acknowledged KAUST grant number(s): BAS/1/1351-01-01, BAS/1/1423-01-01, URF/1/4074-01-01 Acknowledgements: Manojkumar Gudala and Suresh Kumar Govindarajan gratefully acknowledge financial support from the Indian Institute of Technology–Madras; Manojkumar Gudala and Bicheng Yan thanks for the Research Funding from King Abdullah University of Science and Technology (KAUST), Saudi Arabia through the grants BAS/1/1423-01-01; Manojkumar Gudala and Shuyu Sun thanks for the Research Funding from King Abdullah University of Science and Technology (KAUST), Saudi Arabia through the grants BAS/1/1351-01-01 and URF/1/4074-01-01.",

year = "2022",

month = sep,

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doi = "10.1115/1.4055538",

language = "English (US)",

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T1 - COMPARISON OF SUPERCRITICAL CO2 WITH WATER AS GEOFLUID IN GEOTHERMAL RESERVOIRS WITH NUMERICAL INVESTIGATION USING FULLY COUPLED THERMO-HYDRO-GEOMECHANICAL MODEL

AU - Gudala, Manojkumar

AU - Govindarajan, Suresh Kumar

AU - Yan, Bicheng

AU - Sun, Shuyu

N1 - KAUST Repository Item: Exported on 2022-09-09 Acknowledged KAUST grant number(s): BAS/1/1351-01-01, BAS/1/1423-01-01, URF/1/4074-01-01 Acknowledgements: Manojkumar Gudala and Suresh Kumar Govindarajan gratefully acknowledge financial support from the Indian Institute of Technology–Madras; Manojkumar Gudala and Bicheng Yan thanks for the Research Funding from King Abdullah University of Science and Technology (KAUST), Saudi Arabia through the grants BAS/1/1423-01-01; Manojkumar Gudala and Shuyu Sun thanks for the Research Funding from King Abdullah University of Science and Technology (KAUST), Saudi Arabia through the grants BAS/1/1351-01-01 and URF/1/4074-01-01.

PY - 2022/9/7

Y1 - 2022/9/7

N2 - In the present work, fully coupled dynamic thermo-hydro-mechanical (THM) model was employed to investigate the advantage and disadvantages of supercritical CO2 (SCCO2) over water as geofluids. Low-temperature zone was found in both SCCO2-EGS and water-EGS systems, but spatial expansion is higher in water-EGS. Although, the spatial expansion of SCCO2 into the rock matrix will help in the geo-sequestration. The expansion of stress and strain invaded zones were identified significantly in the vicinity of fracture and injection well. SCCO2-EGS system is giving better thermal breakthrough and geothermal life conditions compared to the water-EGS system. Reservoir flow impedance (RFI) and heat power are examined, and heat power are high in the water-EGS system. Minimum RFI is found in the SCCO2-EGS system at 45°C and 0.05 m/s. Maximum heat power for SCCO2-EGS was observed at 35°C, 20 MPa, and 0.15 m/s. Therefore, the developed dynamic THM model is having greater abilities to examine behaviour of SCCO2-EGS and water-EGS systems effectively. The variations occur in the rock matrix and the performance indicators are dependent on the type of fluid, injection/production velocities, initial reservoir pressure, injection temperature. The advantages of SCCO2-EGS system over the water-EGS system, providing a promising result to the geothermal industry as geofluid.

AB - In the present work, fully coupled dynamic thermo-hydro-mechanical (THM) model was employed to investigate the advantage and disadvantages of supercritical CO2 (SCCO2) over water as geofluids. Low-temperature zone was found in both SCCO2-EGS and water-EGS systems, but spatial expansion is higher in water-EGS. Although, the spatial expansion of SCCO2 into the rock matrix will help in the geo-sequestration. The expansion of stress and strain invaded zones were identified significantly in the vicinity of fracture and injection well. SCCO2-EGS system is giving better thermal breakthrough and geothermal life conditions compared to the water-EGS system. Reservoir flow impedance (RFI) and heat power are examined, and heat power are high in the water-EGS system. Minimum RFI is found in the SCCO2-EGS system at 45°C and 0.05 m/s. Maximum heat power for SCCO2-EGS was observed at 35°C, 20 MPa, and 0.15 m/s. Therefore, the developed dynamic THM model is having greater abilities to examine behaviour of SCCO2-EGS and water-EGS systems effectively. The variations occur in the rock matrix and the performance indicators are dependent on the type of fluid, injection/production velocities, initial reservoir pressure, injection temperature. The advantages of SCCO2-EGS system over the water-EGS system, providing a promising result to the geothermal industry as geofluid.

UR - http://hdl.handle.net/10754/681031

UR - https://asmedigitalcollection.asme.org/energyresources/article/doi/10.1115/1.4055538/1146042/COMPARISON-OF-SUPERCRITICAL-CO2-WITH-WATER-AS

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DO - 10.1115/1.4055538

M3 - Article

SN - 0195-0738

SP - 1

EP - 33

JO - Journal of Energy Resources Technology

JF - Journal of Energy Resources Technology

ER -

COMPARISON OF SUPERCRITICAL CO2 WITH WATER AS GEOFLUID IN GEOTHERMAL RESERVOIRS WITH NUMERICAL INVESTIGATION USING FULLY COUPLED THERMO-HYDRO-GEOMECHANICAL MODEL

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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