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

Pan, Chunjian; Romero, Carlos E.; Levy, Edward K.; Wang, Xingchao; Rubio-Maya, Carlos; Pan, Lehua

doi:10.1016/j.jcou.2018.09.003

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

Journal Article · Sat Sep 08 00:00:00 EDT 2018 · Journal of CO2 Utilization

DOI:https://doi.org/10.1016/j.jcou.2018.09.003· OSTI ID:1559155

Pan, Chunjian ^[1]; Romero, Carlos E. ^[1]; Levy, Edward K. ^[1];

^[1]; Rubio-Maya, Carlos ^[2]; Pan, Lehua ^[3]

Lehigh Univ., Bethlehem, PA (United States). Energy Research Center
Univ. Michoacana de San Nicolas de Hidalgo, Morelia (Mexico). Faculty of Mechanical Engineering
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth Sciences Div.

The concept of injecting supercritical CO₂ (sCO₂) into a geothermal reservoir was computationally investigated to assess its performance in terms of the benefit of using CO₂ captured from fossil power plants for geothermal heat mining. A coupled wellbore-reservoir system was simulated considering the flow of pure sCO₂ in an injection well, the interaction of sCO₂ and water in a permeable reservoir, and the flow of the two-phase mixture of sCO₂ and water in a production well. Results of simulations indicate that this CO₂ application is capable of providing a good source of renewable energy. It was found that for a reservoir with a 0.08 km³ volume, about 8-9 MW_th could be extracted in a steady state fashion for a 30-year lifetime operation. This is approximately equivalent to 100 MW_th/km³. A sensitivity analysis provided information on the impact of certain parameters on the performance of the integrated system. The injection flowrate, the distance between the production and injection wellbores and the penetrating depth of the production wellbore into the reservoir have a first order impact on the pressure management of the reservoir. Additionally, CO₂ injection temperature has a large effect on the thermosiphon characteristics of the system.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC); Mexican National Council of Science and Technology

Grant/Contract Number:: AC02-05CH11231; S0019-2012-04

OSTI ID:: 1559155

Journal Information:: Journal of CO2 Utilization, Vol. 27, Issue C; ISSN 2212-9820

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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