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Title: An international code comparison study on coupled thermal, hydrologic and geomechanical processes of natural gas hydrate-bearing sediments

Abstract

© 2020 Geologic reservoirs containing gas hydrate occur beneath permafrost environments and within marine continental slope sediments, representing a potentially vast natural gas source. Numerical simulators provide scientists and engineers with tools for understanding how production efficiency depends on the numerous, interdependent (coupled) processes associated with potential production strategies for these gas hydrate reservoirs. Confidence in the modeling and forecasting abilities of these gas hydrate reservoir simulators (GHRSs) grows with successful comparisons against laboratory and field test results, but such results are rare, particularly in natural settings. The hydrate community recognized another approach to building confidence in the GHRS: comparing simulation results between independently developed and executed computer codes on structured problems specifically tailored to the interdependent processes relevant for gas hydrate-bearing systems. The United States Department of Energy, National Energy Technology Laboratory, (DOE/NETL), sponsored the first international gas hydrate code comparison study, IGHCCS1, in the early 2000s. IGHCCS1 focused on coupled thermal and hydrologic processes associated with producing gas hydrates from geologic reservoirs via depressurization and thermal stimulation. Subsequently, GHRSs have advanced to model more complex production technologies and incorporate geomechanical processes into the existing framework of coupled thermal and hydrologic modeling. This paper contributes to the validation ofmore » these recent GHRS developments by providing results from a second GHRS code comparison study, IGHCCS2, also sponsored by DOE/NETL. IGHCCS2 includes participants from an international collection of universities, research institutes, industry, national laboratories, and national geologic surveys. Study participants developed a series of five benchmark problems principally involving gas hydrate processes with geomechanical components. The five problems range from simple geometries with analytical solutions to a representation of the world's first offshore production test of methane hydrates, which was conducted with the depressurization method off the coast of Japan. To identify strengths and limitations in the various GHRSs, study participants submitted solutions for the benchmark problems and discussed differing results via teleconferences. The GHRSs evolved over the course of IGHCCS2 as researchers modified their simulators to reflect new insights, lessons learned, and suggested performance enhancements. The five benchmark problems, final sample solutions, and lessons learned that are presented here document the study outcomes and serve as a reference guide for developing and testing gas hydrate reservoir simulators.« less

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE), Oil & Natural Gas
Contributing Org.:
IGHCCS2 Participants
OSTI Identifier:
1638565
Alternate Identifier(s):
OSTI ID: 1642081; OSTI ID: 1676395
Report Number(s):
PNNL-SA-154536
Journal ID: ISSN 0264-8172; S0264817220303494; 104566; PII: S0264817220303494
Grant/Contract Number:  
AC02-05CH11231; AC05-76RL01830
Resource Type:
Published Article
Journal Name:
Marine and Petroleum Geology
Additional Journal Information:
Journal Name: Marine and Petroleum Geology Journal Volume: 120 Journal Issue: C; Journal ID: ISSN 0264-8172
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English
Subject:
58 GEOSCIENCES; IGHCCS2; gas hydrates; code comparison study; natural gas hydrates; numerical simulation; coupled thermal-hydrological-mechanical (THM) processes; code comparison; geomechanics

Citation Formats

White, M. D., Kneafsey, T. J., Seol, Y., Waite, W. F., Uchida, S., Lin, J. S., Myshakin, E. M., Gai, X., Gupta, S., Reagan, M. T., Queiruga, A. F., Kimoto, S., Baker, R. C., Boswell, R., Ciferno, J., Collett, T., Choi, J., Dai, S., De La Fuente, M., Fu, P., Fujii, T., Intihar, C. G., Jang, J., Ju, X., Kang, J., Kim, J. H., Kim, J. T., Kim, S. J., Koh, C., Konno, Y., Kumagai, K., Lee, J. Y., Lee, W. S., Lei, L., Liu, F., Luo, H., Moridis, G. J., Morris, J., Nole, M., Otsuki, S., Sanchez, M., Shang, S., Shin, C., Shin, H. S., Soga, K., Sun, X., Suzuki, S., Tenma, N., Xu, T., Yamamoto, K., Yoneda, J., Yonkofski, C. M., Yoon, H. C., You, K., Yuan, Y., Zerpa, L., and Zyrianova, M. An international code comparison study on coupled thermal, hydrologic and geomechanical processes of natural gas hydrate-bearing sediments. United Kingdom: N. p., 2020. Web. https://doi.org/10.1016/j.marpetgeo.2020.104566.
White, M. D., Kneafsey, T. J., Seol, Y., Waite, W. F., Uchida, S., Lin, J. S., Myshakin, E. M., Gai, X., Gupta, S., Reagan, M. T., Queiruga, A. F., Kimoto, S., Baker, R. C., Boswell, R., Ciferno, J., Collett, T., Choi, J., Dai, S., De La Fuente, M., Fu, P., Fujii, T., Intihar, C. G., Jang, J., Ju, X., Kang, J., Kim, J. H., Kim, J. T., Kim, S. J., Koh, C., Konno, Y., Kumagai, K., Lee, J. Y., Lee, W. S., Lei, L., Liu, F., Luo, H., Moridis, G. J., Morris, J., Nole, M., Otsuki, S., Sanchez, M., Shang, S., Shin, C., Shin, H. S., Soga, K., Sun, X., Suzuki, S., Tenma, N., Xu, T., Yamamoto, K., Yoneda, J., Yonkofski, C. M., Yoon, H. C., You, K., Yuan, Y., Zerpa, L., & Zyrianova, M. An international code comparison study on coupled thermal, hydrologic and geomechanical processes of natural gas hydrate-bearing sediments. United Kingdom. https://doi.org/10.1016/j.marpetgeo.2020.104566
White, M. D., Kneafsey, T. J., Seol, Y., Waite, W. F., Uchida, S., Lin, J. S., Myshakin, E. M., Gai, X., Gupta, S., Reagan, M. T., Queiruga, A. F., Kimoto, S., Baker, R. C., Boswell, R., Ciferno, J., Collett, T., Choi, J., Dai, S., De La Fuente, M., Fu, P., Fujii, T., Intihar, C. G., Jang, J., Ju, X., Kang, J., Kim, J. H., Kim, J. T., Kim, S. J., Koh, C., Konno, Y., Kumagai, K., Lee, J. Y., Lee, W. S., Lei, L., Liu, F., Luo, H., Moridis, G. J., Morris, J., Nole, M., Otsuki, S., Sanchez, M., Shang, S., Shin, C., Shin, H. S., Soga, K., Sun, X., Suzuki, S., Tenma, N., Xu, T., Yamamoto, K., Yoneda, J., Yonkofski, C. M., Yoon, H. C., You, K., Yuan, Y., Zerpa, L., and Zyrianova, M. Thu . "An international code comparison study on coupled thermal, hydrologic and geomechanical processes of natural gas hydrate-bearing sediments". United Kingdom. https://doi.org/10.1016/j.marpetgeo.2020.104566.
@article{osti_1638565,
title = {An international code comparison study on coupled thermal, hydrologic and geomechanical processes of natural gas hydrate-bearing sediments},
author = {White, M. D. and Kneafsey, T. J. and Seol, Y. and Waite, W. F. and Uchida, S. and Lin, J. S. and Myshakin, E. M. and Gai, X. and Gupta, S. and Reagan, M. T. and Queiruga, A. F. and Kimoto, S. and Baker, R. C. and Boswell, R. and Ciferno, J. and Collett, T. and Choi, J. and Dai, S. and De La Fuente, M. and Fu, P. and Fujii, T. and Intihar, C. G. and Jang, J. and Ju, X. and Kang, J. and Kim, J. H. and Kim, J. T. and Kim, S. J. and Koh, C. and Konno, Y. and Kumagai, K. and Lee, J. Y. and Lee, W. S. and Lei, L. and Liu, F. and Luo, H. and Moridis, G. J. and Morris, J. and Nole, M. and Otsuki, S. and Sanchez, M. and Shang, S. and Shin, C. and Shin, H. S. and Soga, K. and Sun, X. and Suzuki, S. and Tenma, N. and Xu, T. and Yamamoto, K. and Yoneda, J. and Yonkofski, C. M. and Yoon, H. C. and You, K. and Yuan, Y. and Zerpa, L. and Zyrianova, M.},
abstractNote = {© 2020 Geologic reservoirs containing gas hydrate occur beneath permafrost environments and within marine continental slope sediments, representing a potentially vast natural gas source. Numerical simulators provide scientists and engineers with tools for understanding how production efficiency depends on the numerous, interdependent (coupled) processes associated with potential production strategies for these gas hydrate reservoirs. Confidence in the modeling and forecasting abilities of these gas hydrate reservoir simulators (GHRSs) grows with successful comparisons against laboratory and field test results, but such results are rare, particularly in natural settings. The hydrate community recognized another approach to building confidence in the GHRS: comparing simulation results between independently developed and executed computer codes on structured problems specifically tailored to the interdependent processes relevant for gas hydrate-bearing systems. The United States Department of Energy, National Energy Technology Laboratory, (DOE/NETL), sponsored the first international gas hydrate code comparison study, IGHCCS1, in the early 2000s. IGHCCS1 focused on coupled thermal and hydrologic processes associated with producing gas hydrates from geologic reservoirs via depressurization and thermal stimulation. Subsequently, GHRSs have advanced to model more complex production technologies and incorporate geomechanical processes into the existing framework of coupled thermal and hydrologic modeling. This paper contributes to the validation of these recent GHRS developments by providing results from a second GHRS code comparison study, IGHCCS2, also sponsored by DOE/NETL. IGHCCS2 includes participants from an international collection of universities, research institutes, industry, national laboratories, and national geologic surveys. Study participants developed a series of five benchmark problems principally involving gas hydrate processes with geomechanical components. The five problems range from simple geometries with analytical solutions to a representation of the world's first offshore production test of methane hydrates, which was conducted with the depressurization method off the coast of Japan. To identify strengths and limitations in the various GHRSs, study participants submitted solutions for the benchmark problems and discussed differing results via teleconferences. The GHRSs evolved over the course of IGHCCS2 as researchers modified their simulators to reflect new insights, lessons learned, and suggested performance enhancements. The five benchmark problems, final sample solutions, and lessons learned that are presented here document the study outcomes and serve as a reference guide for developing and testing gas hydrate reservoir simulators.},
doi = {10.1016/j.marpetgeo.2020.104566},
journal = {Marine and Petroleum Geology},
number = C,
volume = 120,
place = {United Kingdom},
year = {2020},
month = {10}
}

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