A pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system
The hydrate dissociation and gas production behaviors are investigated in a pilot-scale hydrate simulator (PHS) using a novel two-spot horizontal well system through experimental and numerical simulations. There are two horizontal wells located in the same symmetrical plane of the cylindrical reacto...
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Online Access: | http://ir.giec.ac.cn/handle/344007/11778 https://doi.org/10.1016/j.apenergy.2016.05.061 |
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/11778 2023-05-15T17:12:09+02:00 A pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system Li, Bo Liang, Yun-Pei Li, Xiao-Sen Zhou, Lei 2016-08-15 http://ir.giec.ac.cn/handle/344007/11778 https://doi.org/10.1016/j.apenergy.2016.05.061 英语 eng APPLIED ENERGY http://ir.giec.ac.cn/handle/344007/11778 doi:10.1016/j.apenergy.2016.05.061 Gas Hydrate Horizontal Well Depressurization Thermal Stimulation Numerical Simulation Science & Technology Technology Energy & Fuels Engineering QILIAN MOUNTAIN PERMAFROST QINGHAI-TIBET PLATEAU METHANE HYDRATE POROUS-MEDIA NATURAL-GAS THERMAL-STIMULATION PUFF METHOD NUMERICAL-SIMULATION VERTICAL WELL HEAT-TRANSFER Chemical Article 期刊论文 2016 ftchacadsciegiec https://doi.org/10.1016/j.apenergy.2016.05.061 2022-09-23T14:12:39Z The hydrate dissociation and gas production behaviors are investigated in a pilot-scale hydrate simulator (PHS) using a novel two-spot horizontal well system through experimental and numerical simulations. There are two horizontal wells located in the same symmetrical plane of the cylindrical reactor. Gas and water are produced from the lower well under depressurization, while hot water with the temperature of 80.0 degrees C is injected into the PHS from the upper one at a constant rate of 50 mL/min. Both the experimental and numerical results show that nearly all the produced gas is originated from hydrate dissociation, and the initial free gas in the vessel contributes little to the final gas production. The injected hot water is more likely to flow downwards under the gravity effect and be produced from the lower well, and hydrate dissociation is mainly stimulated by the heat conduction in the reactor. Two irregular dissociation interfaces are observed to surround the hydrate undissociated areas. One interface expands from the upper well, while the other one shrinks from the boundaries. The results of the gas-to-water ratio and the obtained net energy indicate that it is commercially feasible for hydrate exploitation using this kind of well design. In addition, it is found that the production efficiency of the system is strongly dependent on the initial hydrate saturation and the hot water injection rate. (C) 2016 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Methane hydrate permafrost Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Applied Energy 176 12 21 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Gas Hydrate Horizontal Well Depressurization Thermal Stimulation Numerical Simulation Science & Technology Technology Energy & Fuels Engineering QILIAN MOUNTAIN PERMAFROST QINGHAI-TIBET PLATEAU METHANE HYDRATE POROUS-MEDIA NATURAL-GAS THERMAL-STIMULATION PUFF METHOD NUMERICAL-SIMULATION VERTICAL WELL HEAT-TRANSFER Chemical |
spellingShingle |
Gas Hydrate Horizontal Well Depressurization Thermal Stimulation Numerical Simulation Science & Technology Technology Energy & Fuels Engineering QILIAN MOUNTAIN PERMAFROST QINGHAI-TIBET PLATEAU METHANE HYDRATE POROUS-MEDIA NATURAL-GAS THERMAL-STIMULATION PUFF METHOD NUMERICAL-SIMULATION VERTICAL WELL HEAT-TRANSFER Chemical Li, Bo Liang, Yun-Pei Li, Xiao-Sen Zhou, Lei A pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system |
topic_facet |
Gas Hydrate Horizontal Well Depressurization Thermal Stimulation Numerical Simulation Science & Technology Technology Energy & Fuels Engineering QILIAN MOUNTAIN PERMAFROST QINGHAI-TIBET PLATEAU METHANE HYDRATE POROUS-MEDIA NATURAL-GAS THERMAL-STIMULATION PUFF METHOD NUMERICAL-SIMULATION VERTICAL WELL HEAT-TRANSFER Chemical |
description |
The hydrate dissociation and gas production behaviors are investigated in a pilot-scale hydrate simulator (PHS) using a novel two-spot horizontal well system through experimental and numerical simulations. There are two horizontal wells located in the same symmetrical plane of the cylindrical reactor. Gas and water are produced from the lower well under depressurization, while hot water with the temperature of 80.0 degrees C is injected into the PHS from the upper one at a constant rate of 50 mL/min. Both the experimental and numerical results show that nearly all the produced gas is originated from hydrate dissociation, and the initial free gas in the vessel contributes little to the final gas production. The injected hot water is more likely to flow downwards under the gravity effect and be produced from the lower well, and hydrate dissociation is mainly stimulated by the heat conduction in the reactor. Two irregular dissociation interfaces are observed to surround the hydrate undissociated areas. One interface expands from the upper well, while the other one shrinks from the boundaries. The results of the gas-to-water ratio and the obtained net energy indicate that it is commercially feasible for hydrate exploitation using this kind of well design. In addition, it is found that the production efficiency of the system is strongly dependent on the initial hydrate saturation and the hot water injection rate. (C) 2016 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Li, Bo Liang, Yun-Pei Li, Xiao-Sen Zhou, Lei |
author_facet |
Li, Bo Liang, Yun-Pei Li, Xiao-Sen Zhou, Lei |
author_sort |
Li, Bo |
title |
A pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system |
title_short |
A pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system |
title_full |
A pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system |
title_fullStr |
A pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system |
title_full_unstemmed |
A pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system |
title_sort |
pilot-scale study of gas production from hydrate deposits with two-spot horizontal well system |
publishDate |
2016 |
url |
http://ir.giec.ac.cn/handle/344007/11778 https://doi.org/10.1016/j.apenergy.2016.05.061 |
genre |
Methane hydrate permafrost |
genre_facet |
Methane hydrate permafrost |
op_relation |
APPLIED ENERGY http://ir.giec.ac.cn/handle/344007/11778 doi:10.1016/j.apenergy.2016.05.061 |
op_doi |
https://doi.org/10.1016/j.apenergy.2016.05.061 |
container_title |
Applied Energy |
container_volume |
176 |
container_start_page |
12 |
op_container_end_page |
21 |
_version_ |
1766068938931699712 |