The impact of geological heterogeneity on horizontal well-triplet performance in CO2-circulated geothermal reservoirs
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Abstract
CO2 circulated geothermal production can be integrated with CO2 geological sequestration as a utilization method to offset cost. Investigation of heterogeneity impact is limited to CO2 sequestration and its effect on CO2 circulation and associated heat recovery is unclear. This study is aimed to improve the understanding of this problem by numerical experiments. A set of spatially correlated heterogeneous porosity fields is generated using a variety of geostatistical parameters, i.e., variance, correlation lengths, anisotropy and azimuth. Heterogeneous fields of intrinsic permeability and initial/residual water saturation are derived from porosity using equations regressed from a field dataset. Twenty combinations of injection pressure and well space obtained by Latin-Hypercube sampling are deployed in each heterogeneous field, generating a suite of numerical geothermal reservoir models. Performance indicators, including lifespan, net stored CO2 , produced heat flux, and total recovered heat energy in lifespan, are calculated from each model simulation. The simulation results suggest that geologic heterogeneity could develop high-permeable CO2 flow paths, causing bypass of the hot low-permeable zones, shortened lifespan and reduced total recovered heat energy. Depending on the azimuth, anisotropy can create either flow barriers or preferential flow paths, increasing or decreasing heat sweeping efficiency. The relative angle between horizontal wells and the axis of maximum continuity of the heterogeneity can be optimized to maximize heat recovery efficiency. These finds provide useful insights of interplay between geological heterogeneity, well placement and operation of CO2 circulated geothermal production.
Cited as: Chen, M., Al-Saidi, A., Al-Maktoumi, A., Izady, A. The impact of geological heterogeneity on horizontal well-triplet performance in CO2-circulated geothermal reservoirs. Advances in Geo-Energy Research, 2022, 6(3): 192-205. https://doi.org/10.46690/ager.2022.03.03
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Abas, N., Khan, N. Carbon conundrum, climate change, CO2 capture and consumptions. Journal of CO2 Utilization, 2014, 8: 39-48.
Abbaszadeh, M., Koide, N., Murahashi, Y. Integrated characterization and flow modeling of a heterogeneous carbonate reservoir in Daleel field, Oman. SPE Reservoir Evaluation & Engineering, 2000, 3(2): 150-159.
Adams, B. M., Kuehn, T. H., Bielicki, J. M., et al. On the importance of the thermosiphon effect in CPG (CO2 plume geothermal) power systems. Energy, 2014, 69: 409-418.
Adams, B. M., Kuehn, T. H., Bielicki, J. M., et al. A comparison of electric power output of CO2 plume geothermal (CPG) and brine geothermal systems for varying reservoir conditions. Applied Energy, 2015, 140: 365-377.
Al-Lamki, M., Terken, J. M. The role of hydrogeology in Petroleum Development Oman. GeoArabia, 1996, 1(4): 495-510.
Atrens, A. D., Gurgenci, H., Rudolph, V. CO2 thermosiphon for competitive geothermal power generation. Energy & Fuels, 2009, 23(1): 553-557.
Buscheck, T. A., Bielicki, J. M., Chen, M., et al. Integrating CO2 storage with geothermal resources for dispatchable renewable electricity. Energy Procedia, 2014, 63: 7619-7630.
Buscheck, T. A., Elliot, T. R., Celia, M. A., et al. Integrated geothermal-CO2 reservoir systems: Reducing carbon intensity through sustainable energy production and secure CO2 storage. Energy Procedia, 2013, 37: 6587-6594.
Buscheck, T. A., Sun, Y., Chen, M., et al. Active CO2 reservoir management for carbon storage: Analysis of operational strategies to relive pressure buildup and improve injectivity. International Journal of Greenhouse Gas Control, 2012, 6: 230-245.
Chen, M., Abdalla, O., Izady, A., et al. Development and surrogate-based calibration of a CO2 reservoir model. Journal of Hydrology, 2020, 586: 124698.
Chen, M., Al-Maktoumi, A., Izady, A. Assessment of integrated CO2 geologic storage and geothermal harvest in a semi-closed thin reservoir. Sustainable Energy Technologies and Assessments, 2022, 49: 101773.
Chen, M., Al-Maktoumi, A., Rajabi, M. M., et al. Evaluation of CO2 sequestration and circulation in fault-bounded thin geothermal reservoirs in North Oman using response surface methods. Journal of Hydrology, 2021, 598: 126411.
Crooijmans, R., Willems, C., Nick, H., et al. The influence of facies heterogeneity on the doublet performance in low-enthalpy geothermal sedimentary reservoirs. Geothermics, 2016, 64: 209-219.
Dai, Z., Middleton, R., Viswanathan, H., et al. An integrated framework for optimizing CO2 sequestration and enhanced oil recovery. Environmental Science & Technology Letters, 2014, 1(1): 49-54.
Ershadnia, R., Wallace, C. D., Hajirezaie, S., et al. Hydro-thermo-chemo-mechanical modeling of carbon dioxide injection in fluvial heterogeneous aquifers. Chemical Engineering Journal, 2022, 431: 133451.
GCCSI. The Global Status of CCS, Summary Report, Global Carbon Capture and Storage Institute, 2014.
Hao, Y., Sun, Y., Nitao, J. J. Overview of NUFT: A versatile numerical model for simulating flow and reactive transport in porous media, in Groundwater Reactive Transport Models, edited by F. Zhang, G. Yeh, and J. C. Parker, Bentham Science Publisher, United Arab Emirates, pp. 212-239, 2012.
Harris, C., Jackson, S. J., Benham, G. P., et al. The impact of heterogeneity on the capillary trapping of CO2 in the Captain Sandstone. International Journal of Greenhouse Gas Control, 2021, 112: 103511.
IPCC (Intergovernmental Panel on Climate Change). IPCC Special Report on Carbon Dioxide Capture and Storage. Cambridge University Press, New York, USA, 2005.
Liu, G., Pu, H., Zhao, Z., et al. Coupled thermo-hydro-mechanical modeling on well pairs in heterogeneous porous geothermal reservoirs. Energy, 2019, 171: 631-653.
Mac Dowell, N., Fennell, P. S., Shah, N., et al. The role of CO2 capture and utilization in mitigating climate change. Nature Climate Change, 2017, 7: 243-249.
McKay, M. D., Beckman, R. J., Conover, W. J. A comparison of three methods for selecting values of input variables in the analysis of output from a computer code. Technometrics, 1979, 21(2): 239-245.
Nitao, J. J. Reference manual for the NUFT flow and transport code, version 2.0. Technical Report UCRL-MA-130651. Lawrence Livermore National Laboratory, Livermore, CA, 1998.
Randolph, J. B., Saar, M. O. Coupling carbon dioxide sequestration with geothermal energy capture in naturally permeable, porous geologic formations: Implications for CO2 sequestration. Energy Procedia, 2011, 4: 2206-2213.
Rasheed, Z., Raza, A., Gholami, R., et al. A numerical study to assess the effect of heterogeneity on CO2 storage potential of saline aquifers. Energy Geoscience, 2020, 1(1-2): 20-27.
Ren, J., Wang, Y., Feng, D., et al. CO2 migration and distribution in multiscale-heterogeneous deep saline aquifers. Advances in Geo-Energy Research, 2021, 5(3): 333-346.
Saar, M. O., Buscheck, T. A., Jenny, P., et al. Numerical study of multi-fluid and multi-level geothermal system performance. Paper Presented at Proceedings World Geothermal Congress 2015, Melbourne, Australia, 19-25 April, 2015.
Schütz, F., Winterleitner, G., Huenges, E. Geothermal exploration in a sedimentary basin: New continuous temperature data and physical rock properties from northern Oman. Geothermal Energy, 2018, 6: 5.
Shaffer, G. Long-term effectiveness and consequences of carbon dioxide sequestration. Nature Geoscience, 2010, 3: 464-467.
Sohal, M. A., Le Gallo, Y., Audigane, P., et al. Effect of geological heterogeneities on reservoir storage capacity and migration of CO2 plume in a deep saline fractured carbonate aquifer. International Journal of Greenhouse Gas Control, 2021, 108: 103306.
Sun, F., Yao, Y., Li, G., et al. Performance of geothermal energy extraction in a horizontal well by using CO2 as the working fluid. Energy Conversion and Management, 2018, 171: 1529-1539.
Willems, C. J., Nick, H. M., Donselaar, M. E., et al. On the connectivity anisotropy in fluvial hot sedimentary aquifers and its influence on geothermal doublet performance. Geothermics, 2017, 65: 222-233.
Williams, G. A., Chadwick, R. A. Influence of reservoir-scale heterogeneities on the growth, evolution and migration of a CO2 plume at the Sleipner Field, Norwegian North Sea. International Journal of Greenhouse Gas Control, 2021, 106: 103260.
Xu, T., Tian, H., Zhu, H., et al. China actively promotes CO2 capture, utilization and storage research to achieve carbon peak and carbon neutrality. Advances in Geo-Energy Research, 2022, 6(1): 1-3.
Zhang, L., Zhou, L., Al-Mugheiry, M., et al. Horizontal water flooding in Shuaiba carbonate reservoir of Daleel Field in Oman: From pilots’ performance to development era. Paper SPE-108392-MS Presented at SPE Annual Technical Conference and Exhibition, Anaheim, California, 11-14 November, 2007.
Zhao, G., Mu, L., Wu, X. The application of horizontal wells in effectively developing thinly-bedded carbonate reservoirs of block 5, Oman. Paper Presentation at AAPG Annual Convention and Exhibition, Long Beach, California, 22-25 April, 2012.
DOI: https://doi.org/10.46690/ager.2022.03.03
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