Experimental and numerical investigation of hydrate-guest molecule exchange kinetics
The 2012 Ignik Sikumi #1 Field Trial in Alaska was designed to test at field scale a methane hydrate production methodology that involves injecting carbon dioxide (CO2) in situ to exchange with methane (CH4) within a hydrate structure, thus releasing the methane for production. Since the completion...
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ftoceanrep:oai:oceanrep.geomar.de:50528 2023-05-15T17:12:04+02:00 Experimental and numerical investigation of hydrate-guest molecule exchange kinetics Yonkofski, Catherine M.R. Horner, Jake A. White, Mark D. 2016-09 text https://oceanrep.geomar.de/id/eprint/50528/ https://oceanrep.geomar.de/id/eprint/50528/1/Yonkofski.pdf https://doi.org/10.1016/j.jngse.2016.03.080 en eng Elsevier https://oceanrep.geomar.de/id/eprint/50528/1/Yonkofski.pdf Yonkofski, C. M. R., Horner, J. A. and White, M. D. (2016) Experimental and numerical investigation of hydrate-guest molecule exchange kinetics. Journal of Natural Gas Science and Engineering, 35 . pp. 1480-1489. DOI 10.1016/j.jngse.2016.03.080 <https://doi.org/10.1016/j.jngse.2016.03.080>. doi:10.1016/j.jngse.2016.03.080 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.1016/j.jngse.2016.03.080 2023-04-07T15:51:56Z The 2012 Ignik Sikumi #1 Field Trial in Alaska was designed to test at field scale a methane hydrate production methodology that involves injecting carbon dioxide (CO2) in situ to exchange with methane (CH4) within a hydrate structure, thus releasing the methane for production. Since the completion of the field trial, experimental and numerical investigations have sought to better understand observations in terms of CH4 production and changes to the hydrate bearing formation. Collectively, these insights may lead to more effective strategies for producing CH4 from naturally occurring hydrates. This study presents results from a laboratory experiment performed at conditions experienced during the field trial (8.27 MPa and 275.15 K) to collect data relating to the CH4 molecular exchange process. The experiment intentionally isolated the kinetic guest molecule exchange process from additional hydrate formation and mechanical changes to the hydrate bearing sand. Data were used to inform development of numerical models that were then used to fit key hydrate parameters (bound water saturation, kinetic formation constant, kinetic exchange constant, and preferential exchange weighting factors) and analyze experimental results. Results were in agreement with observations of preferential CO2/CH4 guest molecule exchange at Ignik Sikumi #1 and from previous experimental studies while providing quantitative estimates of changing hydrate compositions. Additionally, simulations confirmed hydrate behavior and composition profiles otherwise indirectly evidenced by experimental results. Article in Journal/Newspaper Methane hydrate Alaska OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Journal of Natural Gas Science and Engineering 35 1480 1489 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The 2012 Ignik Sikumi #1 Field Trial in Alaska was designed to test at field scale a methane hydrate production methodology that involves injecting carbon dioxide (CO2) in situ to exchange with methane (CH4) within a hydrate structure, thus releasing the methane for production. Since the completion of the field trial, experimental and numerical investigations have sought to better understand observations in terms of CH4 production and changes to the hydrate bearing formation. Collectively, these insights may lead to more effective strategies for producing CH4 from naturally occurring hydrates. This study presents results from a laboratory experiment performed at conditions experienced during the field trial (8.27 MPa and 275.15 K) to collect data relating to the CH4 molecular exchange process. The experiment intentionally isolated the kinetic guest molecule exchange process from additional hydrate formation and mechanical changes to the hydrate bearing sand. Data were used to inform development of numerical models that were then used to fit key hydrate parameters (bound water saturation, kinetic formation constant, kinetic exchange constant, and preferential exchange weighting factors) and analyze experimental results. Results were in agreement with observations of preferential CO2/CH4 guest molecule exchange at Ignik Sikumi #1 and from previous experimental studies while providing quantitative estimates of changing hydrate compositions. Additionally, simulations confirmed hydrate behavior and composition profiles otherwise indirectly evidenced by experimental results. |
format |
Article in Journal/Newspaper |
author |
Yonkofski, Catherine M.R. Horner, Jake A. White, Mark D. |
spellingShingle |
Yonkofski, Catherine M.R. Horner, Jake A. White, Mark D. Experimental and numerical investigation of hydrate-guest molecule exchange kinetics |
author_facet |
Yonkofski, Catherine M.R. Horner, Jake A. White, Mark D. |
author_sort |
Yonkofski, Catherine M.R. |
title |
Experimental and numerical investigation of hydrate-guest molecule exchange kinetics |
title_short |
Experimental and numerical investigation of hydrate-guest molecule exchange kinetics |
title_full |
Experimental and numerical investigation of hydrate-guest molecule exchange kinetics |
title_fullStr |
Experimental and numerical investigation of hydrate-guest molecule exchange kinetics |
title_full_unstemmed |
Experimental and numerical investigation of hydrate-guest molecule exchange kinetics |
title_sort |
experimental and numerical investigation of hydrate-guest molecule exchange kinetics |
publisher |
Elsevier |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/50528/ https://oceanrep.geomar.de/id/eprint/50528/1/Yonkofski.pdf https://doi.org/10.1016/j.jngse.2016.03.080 |
genre |
Methane hydrate Alaska |
genre_facet |
Methane hydrate Alaska |
op_relation |
https://oceanrep.geomar.de/id/eprint/50528/1/Yonkofski.pdf Yonkofski, C. M. R., Horner, J. A. and White, M. D. (2016) Experimental and numerical investigation of hydrate-guest molecule exchange kinetics. Journal of Natural Gas Science and Engineering, 35 . pp. 1480-1489. DOI 10.1016/j.jngse.2016.03.080 <https://doi.org/10.1016/j.jngse.2016.03.080>. doi:10.1016/j.jngse.2016.03.080 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.jngse.2016.03.080 |
container_title |
Journal of Natural Gas Science and Engineering |
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35 |
container_start_page |
1480 |
op_container_end_page |
1489 |
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1766068830261477376 |