Comparison of multi-field coupling numerical simulation in hot dry rock thermal exploitation of enhanced geothermal systems

Shichao Chen, Bin Ding, Liang Gong, Zhaoqin Huang, Bo Yu, Shuyu Sun

Abstract view|466|times       PDF download|122|times

Abstract


 

In order to alleviate the environmental crisis and improve energy structure, countries from all over the world have focused on the hot dry rock geothermal resources with great potential and with little pollution. The geothermal heat production from Enhanced Geothermal System (EGS) comes with complex multi-field coupling process, and it is of great significance to study the temporal and spatial evolution of geothermal reservoir. In this work, a practical numerical model is established to simulate the heat production process in EGS, and the comparison of thermal-hydraulic (TH), thermal-hydraulic-mechanical (THM) and thermal-hydraulic-mechanical-chemical (THMC) coupling in geothermal reservoir is analyzed. The results show that the stable production stage of the three cases is approximately 5 years; however, compared with TH and THMC coupling, the service-life for THM coupling decreased by 1140 days and 332 days, respectively. The mechanical enhanced effects are offset by the chemical precipitation, and the precipitation from SiO2 is much larger than the dissolution of calcite.

Cited as: Chen, S., Ding, B., Gong, L., Huang, Z., Yu, B., Sun, S. Comparison of multi-field coupling numerical simulation in hot dry rock thermal exploitation of enhanced geothermal systems. Advances in Geo-Energy Research, 2019, 3(4): 396-409, doi: 10.26804/ager.2019.04.07


Keywords


Numerical simulation; TH coupling; THM coupling; THMC coupling; comparative analysis

Full Text:

PDF

References


Abousleiman, Y., Cheng, A.H.D., Cui, L., et al. Mandels problem revisited. Geotechnique 1996, 46(2): 187-195.

Bai, B. One-dimensional thermal consolidation characteristics of geotechnical media under non-isothermal condition. Eng. Mech. 2005, 22(5): 186-191.

Bao, X., Wu, Y., Wei, M., et al. Impact of water/CO2 -rock interactions on formation physical properties in EGS. Sci. Technol. Rev. 2014, 32(14): 42-47.

Baria, R., Baumgartner, J., Rummel, F., et al. HDR/HWR reservoir: Concepts, understanding and creation. Geother-mics 1999, 28(4-5): 533-552.

Chen, T., Liu, G., Liao, S. A comparison study of reservoir boundary conditions of Enhanced Geothermal Systems (EGS). Energy Procedia 2019, 160: 301-309.

Chen, Y., Ma, G., Wang, H. The simulation of thermo-hydro-chemical coupled heat extraction process in fractured geothermal reservoir. Appl. Therm. Eng. 2018, 143: 859-870.

China Geological Survey. China geothermal energy development report. 2018-08-25.

Fakcharoenphol, P., Xiong, Y., Hu, L., et al. User’s Guide of TOUGH2-EGS. A Coupled Geomechanical and Reactive Geochemical Simulator for Fluid and Heat Flow in Enhanced Geothermal Systems Version 1.0. Colorado School of Mines, Golden, CO (United States), 2013.

Guo, L., Zhang, Y., Yu, Z., et al. Hot dry rock geothermal potential of the Xujiaweizi area in Songliao Basin, northeastern China. Environ. Earth Sci. 2016, 75(6): 470.

Han, S., Cheng, Y., Gao, Q., et al. Investigation on heat extraction characteristics in randomly fractured geothermal reservoirs considering thermos-poroelastic effects. Energy Sci. Eng. 2019, 7: 1705-1726.

Huang, X., Zhu, J., Li, J., et al. Parametric study of an enhanced geothermal system based on thermo-hydro-mechanical modeling of a prospective site in Songliao Basin. Appl. Therm. Eng. 2016, 105: 1-7.

Huang, Z., Winterfeld, P.H., Xiong, Y., et al. Parallel simulation of fully-coupled thermal-hydro-mechanical processes in CO2 leakage through fluid-driven fracture zones. Int. J. Greenhouse Gas Control 2015, 34: 39-51.

Hu, L., Winterfeld, P.H., Fakcharoenphol, P., et al. A novel fully-coupled flow and geomechanics model in enhanced geothermal reservoirs. J. Pet. Sci. Eng. 2013, 107: 1-11.

Ijeje, J.J., Gan, Q., Cai, J. Influence of permeability anisotropy on heat transfer and permeability evolution in geothermal reservoir. Adv. Geo-Energy Res. 2019, 3(1): 43-51.

Izadi, G., Elsworth, D. The influence of thermal-hydraulic-mechanical-and chemical effects on the evolution of permeability, seismicity and heat production in geothermal reservoirs. Geothermics 2015, 53: 385-395.

Kazemi, H., Ehyaei, M.A. Energy, exergy, and economic analysis of a geothermal power plant. Adv. Geo-Energy Res. 2018, 2(2): 190-209.

Liu, G., Zhou, B., Liao, S. Inverting methods for thermal reservoir evaluation of enhanced geothermal system. Renewable Sustainable Energy Rev. 2018, 82: 471-476.

Liu, X., Liu, Q., Liu, B., et al. Numerical manifold method for thermalhydraulic coupling in fractured enhance geothermal system. Eng. Anal. Bound. Elem. 2019, 101: 67-75.

Ogata, S., Yasuhara, H., Kinoshita, N., et al. Modeling of coupled thermal-hydraulic-mechanical-chemical processes for predicting the evolution in permeability and reactive transport behavior within single rock fractures. Int. J. Rock Mech. Min. Sci. 2018, 107: 271-281.

Rutqvist, J., Wu, Y., Tsang, C., et al. A modeling approach for analysis of coupled multiphase fluid flow, heat transfer, and deformation in fractured porous rock. Int. J. Rock Mech. Min. Sci. 2002, 39(4): 429-442.

Song, X., Shi, Y., Li, G., et al. Numerical simulation of heat extraction performance in enhanced geothermal system with multilateral wells. Appl. Energy 2018, 218: 325-337.

Sun, Z., Zhang, X., Xu, Y., et al. Numerical simulation of the heat extraction in EGS with thermal-hydraulic-mechanical coupling method based on discrete fractures model. Energy 2017, 120: 20-33.

Wang, Y., Li, T., Chen, Y., et al. A three-dimensional thermo-hydro-mechanical coupled model for enhanced geothermal systems (EGS) embedded with discrete fracture networks. Comput. Method. Appl. M 2019, 356: 465-489.

Wei, X., Feng, Z., Zhao, Y. Numerical simulation of thermo-hydro-mechanical coupling effect in mining fault-mode hot dry rock geothermal energy. Renewable Energy 2019, 139: 120-135.

Xu, T., Sonnenthal, E., Spycher, N., et al. TOUGHREACT user’s guide: A simulation program for non-isothermal multiphase reactive geochemical transport in variable saturated geologic media. Lawrence Berkeley National Lab.(LBNL), Berkeley, CA (United States), 2004.

Yao, J., Zhang, X., Sun, Z., et al. Numerical simulation of the heat extraction in 3D-EGS with thermal-hydraulic-mechanical coupling method based on discrete fractures model. Geothermics 2018, 74: 19-34.

Yu, C., Lei, S., Yang, C., et al. Scenario analysis on operational productivity for target EGS reservoir in I-lan area, Taiwan. Geothermics 2018, 75: 208-219.

Zeng, Y., Su, Z., Wu, N. Numerical simulation of heat production potential from hot dry rock by water circulating through two horizontal wells at Desert Peak geothermal field. Energy 2013, 56: 92-107.

Zeng, Y., Wu, N., Su, Z., et al. Numerical simulation of heat production potential from hot dry rock by water circulating through a novel single vertical fracture at Desert Peak geothermal field. Energy 2013, 63: 268-282.


Refbacks

  • There are currently no refbacks.


Copyright (c) 2019 The Author(s)

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Copyright ©2018. All Rights Reserved