Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator
The kinetic behaviors of methane hydrate dissociation under depressurization in porous media are investigated through experimental and numerical simulations. Hydrate samples with low gas saturations (S-G <= 0.10) are synthesized in the pilot-scale hydrate simulator (PHS), a novel three-dimensiona...
Published in: | Applied Energy |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://ir.giec.ac.cn/handle/344007/10637 https://doi.org/10.1016/j.apenergy.2014.05.018 |
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/10637 2023-05-15T17:11:55+02:00 Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator Li, Bo Li, Xiao-Sen Li, Gang Feng, Jing-Chun Wang, Yi 2014-09-15 http://ir.giec.ac.cn/handle/344007/10637 https://doi.org/10.1016/j.apenergy.2014.05.018 英语 eng APPLIED ENERGY http://ir.giec.ac.cn/handle/344007/10637 doi:10.1016/j.apenergy.2014.05.018 Gas Hydrate Depressurization Porous Media Numerical Simulation Intrinsic Rate Science & Technology Technology Energy & Fuels Engineering ETHYLENE-GLYCOL INJECTION METHANE-HYDRATE POROUS-MEDIA PRODUCTION BEHAVIOR UNCONSOLIDATED SEDIMENT THERMAL-STIMULATION 5-SPOT WELL PUFF METHOD DISSOCIATION DECOMPOSITION Chemical Article 期刊论文 2014 ftchacadsciegiec https://doi.org/10.1016/j.apenergy.2014.05.018 2022-09-23T14:12:28Z The kinetic behaviors of methane hydrate dissociation under depressurization in porous media are investigated through experimental and numerical simulations. Hydrate samples with low gas saturations (S-G <= 0.10) are synthesized in the pilot-scale hydrate simulator (PHS), a novel three-dimensional pressure vessel with effective inner volume of 117.8 L. Three experimental runs with different production pressure at the central vertical well have been carried out. The intrinsic dissociation rate constant k(0) is fitted to be approximately 4578 kg/(m(2) Pa s) using the experimental data of run 1, and it is used for the kinetic simulation in all the three runs. The whole production process can be divided into two stages: the free gas and mixed gas production (stage I) and the gas production from hydrate dissociation (stage II). Both the experimental and numerical simulation results show that the gas production rate increases with the decrease of the production pressure, while the water extraction rate will rise much higher if the wellbore pressure is dropped extremely low. The free gas saturation is found to be a key factor that affects the overall production behaviors of marine hydrate deposits. In addition, the comparisons of the kinetic and equilibrium models indicate that the kinetic limitations are very small in the PHS. The hydrate dissociation under depressurization in the PHS is mainly controlled by the mass and heat transfer processes. (C) 2014 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Applied Energy 129 274 286 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Gas Hydrate Depressurization Porous Media Numerical Simulation Intrinsic Rate Science & Technology Technology Energy & Fuels Engineering ETHYLENE-GLYCOL INJECTION METHANE-HYDRATE POROUS-MEDIA PRODUCTION BEHAVIOR UNCONSOLIDATED SEDIMENT THERMAL-STIMULATION 5-SPOT WELL PUFF METHOD DISSOCIATION DECOMPOSITION Chemical |
spellingShingle |
Gas Hydrate Depressurization Porous Media Numerical Simulation Intrinsic Rate Science & Technology Technology Energy & Fuels Engineering ETHYLENE-GLYCOL INJECTION METHANE-HYDRATE POROUS-MEDIA PRODUCTION BEHAVIOR UNCONSOLIDATED SEDIMENT THERMAL-STIMULATION 5-SPOT WELL PUFF METHOD DISSOCIATION DECOMPOSITION Chemical Li, Bo Li, Xiao-Sen Li, Gang Feng, Jing-Chun Wang, Yi Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator |
topic_facet |
Gas Hydrate Depressurization Porous Media Numerical Simulation Intrinsic Rate Science & Technology Technology Energy & Fuels Engineering ETHYLENE-GLYCOL INJECTION METHANE-HYDRATE POROUS-MEDIA PRODUCTION BEHAVIOR UNCONSOLIDATED SEDIMENT THERMAL-STIMULATION 5-SPOT WELL PUFF METHOD DISSOCIATION DECOMPOSITION Chemical |
description |
The kinetic behaviors of methane hydrate dissociation under depressurization in porous media are investigated through experimental and numerical simulations. Hydrate samples with low gas saturations (S-G <= 0.10) are synthesized in the pilot-scale hydrate simulator (PHS), a novel three-dimensional pressure vessel with effective inner volume of 117.8 L. Three experimental runs with different production pressure at the central vertical well have been carried out. The intrinsic dissociation rate constant k(0) is fitted to be approximately 4578 kg/(m(2) Pa s) using the experimental data of run 1, and it is used for the kinetic simulation in all the three runs. The whole production process can be divided into two stages: the free gas and mixed gas production (stage I) and the gas production from hydrate dissociation (stage II). Both the experimental and numerical simulation results show that the gas production rate increases with the decrease of the production pressure, while the water extraction rate will rise much higher if the wellbore pressure is dropped extremely low. The free gas saturation is found to be a key factor that affects the overall production behaviors of marine hydrate deposits. In addition, the comparisons of the kinetic and equilibrium models indicate that the kinetic limitations are very small in the PHS. The hydrate dissociation under depressurization in the PHS is mainly controlled by the mass and heat transfer processes. (C) 2014 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Li, Bo Li, Xiao-Sen Li, Gang Feng, Jing-Chun Wang, Yi |
author_facet |
Li, Bo Li, Xiao-Sen Li, Gang Feng, Jing-Chun Wang, Yi |
author_sort |
Li, Bo |
title |
Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator |
title_short |
Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator |
title_full |
Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator |
title_fullStr |
Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator |
title_full_unstemmed |
Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator |
title_sort |
depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator |
publishDate |
2014 |
url |
http://ir.giec.ac.cn/handle/344007/10637 https://doi.org/10.1016/j.apenergy.2014.05.018 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
APPLIED ENERGY http://ir.giec.ac.cn/handle/344007/10637 doi:10.1016/j.apenergy.2014.05.018 |
op_doi |
https://doi.org/10.1016/j.apenergy.2014.05.018 |
container_title |
Applied Energy |
container_volume |
129 |
container_start_page |
274 |
op_container_end_page |
286 |
_version_ |
1766068671126437888 |