Parameter sensitivity and economic analyses of an interchange-fracture enhanced geothermal system
Abstract view|1246|times PDF download|232|times
Abstract
Previous research has shown that interchange-fracture enhanced geothermal systems show desirable heat extraction performance. However, their parameter sensitivity has not been systematically investigated. In this study, a three-dimensional, unsteady flow and heat transfer model for an enhanced geothermal system with an interchange-fracture structure was established. The influences of pivotal parameters, including stimulated reservoir volume permeability, fracture spacing, fracture aperture, and injection flow rate on the thermal extraction performance of the interchange-fracture enhanced geothermal system were systematically researched. In addition, the economics of this system were evaluated. The results show that the heat extraction performance of the interchange-fracture system is significantly affected by a change of stimulated reservoir volume permeability and injection flow rate. Increasing permeability reduces electricity costs and improves economic income, while increasing the injection flow rate increases output power but hinders the long-term running stability of the system. Our research provides guidance for the optimal design of an interchange-fracture enhanced geothermal system.
Cited as: Yu, G., Liu, C., Zhang, L., Fang, L. Parameter sensitivity and economic analyses of an interchange-fracture enhanced geothermal system. Advances in Geo-Energy Research, 2021, 5(2): 166-180, doi: 10.46690/ager.2021.02.06
Keywords
Full Text:
PDFReferences
Abdel-Salam, M. R. H., Zaidi, A. Field study of cooling performance of two ground-source heat pumps in Cana-dian single-family houses. Applied Thermal Engineering, 2021, 184: 116294.
Aliyu, M. D., Archer, R. A. Numerical simulation of multifracture HDR geothermal reservoirs. Renewable Energy, 2021, 164: 541-555.
Anyim, K., Gan, Q. Fault zone exploitation in geothermal reservoirs: Production optimization, permeability evolu-tion and induced seismicity. Advances in Geo-Energy Research, 2020, 4(1): 1-12.
Bai, Q., Liu, Z., Zhang, C., et al. Geometry nature of hydraulic fracture propagation from oriented perforations and implications for directional hydraulic fracturing. Computers and Geotechnics, 2020, 125: 103682.
Barends, F. Complete solution for transient heat transport in porous media, following Lauwerier’s concept. Paper SPE 134670 Presented at SPE Annual Technical Conference and Exhibition, Florence, Italy, 19-22 September, 2010.
Bongole, K., Sun, Z., Yao, J. Potential for geothermal heat mining by analysis of the numerical simulation parameters in proposing enhanced geothermal system at Bongor Basin, Chad. Simulation Modelling Practice and Theory, 2021, 107: 102218.
Bujakowski, W., Barbacki, A., Miecznik, M., et al. Modelling geothermal and operating parameters of EGS installations in the lower triassic sedimentary formations of the central Poland area. Renewable Energy, 2015, 80: 441-453.
Chen, S., Ding, B., Gong, L., et al. 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.
Ding, J., Wang, S. 2D modeling of well array operating enhanced geothermal system. Energy, 2018, 162: 918-932.
Gong, F., Guo, T., Sun, W., et al. Evaluation of geothermal energy extraction in Enhanced Geothermal System (EGS) with multiple fracturing horizontal wells (MFHW). Renewable Energy, 2020, 151: 1339-1351.
Habibzadeh-Bigdarvish, O., Yu, X., Li, T., et al. A novel full-scale external geothermal heating system for bridge deck de-icing. Applied Thermal Engineering, 2021, 185: 116365.
Holzbecher, E. O. Modeling Density-Driven Flow In Porous Media. Berlin, German, Springer, 1998.
Ijeje, J. J., Gan, Q., Cai, J. Influence of permeability anisotropy on heat transfer and permeability evolution in geothermal reservoir. Advances in Geo-Energy Research, 2019, 3(1): 43-51.
Lei, Z., Zhang, Y., Yu, Z., et al. Exploratory research into the enhanced geothermal system power generation project: The Qiabuqia geothermal field, Northwest China. Renewable Energy, 2019, 139: 52-70.
Lei, Z., Zhang, Y., Zhang, S., et al. Electricity generation from a three-horizontal-well enhanced geothermal system in the Qiabuqia geothermal field, China: Slickwater fracturing treatments for different reservoir scenarios. Renewable Energy, 2020, 145: 65-83.
Li, K., Bian, H., Liu, C., et al. Comparison of geothermal with solar and wind power generation systems. Renewable and Sustainable Energy Reviews, 2015, 42: 1464-1474.
Liao, Y., Sun, X., Sun, B., et al. Geothermal exploitation and electricity generation from multibranch U-shaped well-enhanced geothermal system. Renewable Energy, 2021, 163: 2178-2189.
Ma, Y., Li, S., Zhang, L., et al. Numerical simulation study on the heat extraction performance of multi-well injection enhanced geothermal system. Renewable Energy, 2020, 151: 782-795.
Ma, Y., Li, S., Zhang, L., et al. Study on the effect of well layout schemes and fracture parameters on the heat extraction performance of enhanced geothermal system in fractured reservoir. Energy, 2020, 202: 117811.
Pollack, A., Mukerji, T. Accounting for subsurface uncertainty in enhanced geothermal systems to make more robust techno-economic decisions. Applied Energy, 2019, 254: 113666.
Shi, Y., Song, X., Shen, Z., et al. Numerical investigation on heat extraction performance of a CO2 enhanced geothermal system with multilateral wells. Energy, 2018, 163: 38-51.
Song, X., Yu, S., Li, G., et al. Numerical simulation of heat extraction performance in enhanced geothermal system with multilateral wells. Applied Energy, 2018, 218: 325-337.
Sun, F., Yao, Y., Li, G., et al. Geothermal energy development by circulating CO2 in a U-shaped closed, loop geothermal system. Energy Conversion and Management, 2018, 174: 971-982.
Sun, Z. X., 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, G., Song, X., Shi, Y., et al. Production performance of a novel open loop geothermal system in a horizontal well. Energy Conversion and Management, 2020, 206: 112478.
Wang, K., Wu, X. Downhole thermoelectric generation in unconventional horizontal wells. Fuel, 2019, 254: 115530.
Zaigham, N. A., Nayyar, Z. A. Renewable hot dry rock geothermal energy source and its potential in Pakistan. Renewable and Sustainable Energy Reviews, 2010, 14(3): 1124-1129.
Zeng, Y. C., Su, Z., Wu, N. Y. 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.
Zhao, Y., Feng, Z., Feng, Z., et al. THM (Thermo-hydro-mechanical) coupled mathematical model of fractured media and numerical simulation of a 3D enhanced geothermal system at 573 K and buried depth 6000-7000 M. Energy, 2015, 82: 193-205.
Zhou, Z., Jin, Y., Zeng, Y., et al. Investigation on fracture creation in hot dry rock geothermal formations of China during hydraulic fracturing. Renewable Energy, 2020, 153: 301-313.
Refbacks
- There are currently no refbacks.
Copyright (c) 2021 The Author(s)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.