Hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand
To study the effect of salt concentration of brine injection on hydrate dissociation, hydrate dissociation experiments induced by depressurization in conjunction with warm brine stimulation have been carried out in a Cubic Hydrate Simulator (CHS). The dual horizontal wells were set as the well confi...
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Online Access: | http://ir.giec.ac.cn/handle/344007/11749 https://doi.org/10.1016/j.apenergy.2016.04.090 |
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/11749 2023-05-15T17:12:07+02:00 Hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand Feng, Jing-Chun Wang, Yi Li, Xiao-Sen 2016-07-15 http://ir.giec.ac.cn/handle/344007/11749 https://doi.org/10.1016/j.apenergy.2016.04.090 英语 eng APPLIED ENERGY http://ir.giec.ac.cn/handle/344007/11749 doi:10.1016/j.apenergy.2016.04.090 Hydrate Depressurization Thermal Stimulation Warm Brine Brine Concentration Science & Technology Technology Energy & Fuels Engineering SOUTH CHINA SEA DUAL HORIZONTAL WELLS METHANE-HYDRATE GAS-PRODUCTION THERMAL-STIMULATION HEAT-TRANSFER POROUS-MEDIA PRODUCTION BEHAVIORS RESERVOIR INJECTION Chemical Article 期刊论文 2016 ftchacadsciegiec https://doi.org/10.1016/j.apenergy.2016.04.090 2022-09-23T14:12:39Z To study the effect of salt concentration of brine injection on hydrate dissociation, hydrate dissociation experiments induced by depressurization in conjunction with warm brine stimulation have been carried out in a Cubic Hydrate Simulator (CHS). The dual horizontal wells were set as the well configuration. The results indicate that the salinity in the reservoir decreases continuously during the depressurizing stage under the mixture of fresh water from hydrate dissociation. However, the salinity increases overtime during the constant-pressure stage (the injection stage) by the mass transfer with the injected brine. The gas production rate and heat-transfer rate for pure water injection are lower than those for brine injection. In addition, raising the injected salinity can enhance the rates of heat transfer and gas production when the salinity is lower than 10.0%. However, the promotion effect of brine injection on hydrate dissociation is limited when the injected salinity is beyond 10.0%. This is because the specific heat of the brine declines with the increase of the salinity, which causes the decrease of heat injection rate. The water production rate equals to the water injection rate in the process of brine injection. The energy analysis and the evaluation of energy ratio indicate that the optimal injected salinity in this work is 10.0%. (C) 2016 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Applied Energy 174 181 191 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Hydrate Depressurization Thermal Stimulation Warm Brine Brine Concentration Science & Technology Technology Energy & Fuels Engineering SOUTH CHINA SEA DUAL HORIZONTAL WELLS METHANE-HYDRATE GAS-PRODUCTION THERMAL-STIMULATION HEAT-TRANSFER POROUS-MEDIA PRODUCTION BEHAVIORS RESERVOIR INJECTION Chemical |
spellingShingle |
Hydrate Depressurization Thermal Stimulation Warm Brine Brine Concentration Science & Technology Technology Energy & Fuels Engineering SOUTH CHINA SEA DUAL HORIZONTAL WELLS METHANE-HYDRATE GAS-PRODUCTION THERMAL-STIMULATION HEAT-TRANSFER POROUS-MEDIA PRODUCTION BEHAVIORS RESERVOIR INJECTION Chemical Feng, Jing-Chun Wang, Yi Li, Xiao-Sen Hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand |
topic_facet |
Hydrate Depressurization Thermal Stimulation Warm Brine Brine Concentration Science & Technology Technology Energy & Fuels Engineering SOUTH CHINA SEA DUAL HORIZONTAL WELLS METHANE-HYDRATE GAS-PRODUCTION THERMAL-STIMULATION HEAT-TRANSFER POROUS-MEDIA PRODUCTION BEHAVIORS RESERVOIR INJECTION Chemical |
description |
To study the effect of salt concentration of brine injection on hydrate dissociation, hydrate dissociation experiments induced by depressurization in conjunction with warm brine stimulation have been carried out in a Cubic Hydrate Simulator (CHS). The dual horizontal wells were set as the well configuration. The results indicate that the salinity in the reservoir decreases continuously during the depressurizing stage under the mixture of fresh water from hydrate dissociation. However, the salinity increases overtime during the constant-pressure stage (the injection stage) by the mass transfer with the injected brine. The gas production rate and heat-transfer rate for pure water injection are lower than those for brine injection. In addition, raising the injected salinity can enhance the rates of heat transfer and gas production when the salinity is lower than 10.0%. However, the promotion effect of brine injection on hydrate dissociation is limited when the injected salinity is beyond 10.0%. This is because the specific heat of the brine declines with the increase of the salinity, which causes the decrease of heat injection rate. The water production rate equals to the water injection rate in the process of brine injection. The energy analysis and the evaluation of energy ratio indicate that the optimal injected salinity in this work is 10.0%. (C) 2016 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Feng, Jing-Chun Wang, Yi Li, Xiao-Sen |
author_facet |
Feng, Jing-Chun Wang, Yi Li, Xiao-Sen |
author_sort |
Feng, Jing-Chun |
title |
Hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand |
title_short |
Hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand |
title_full |
Hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand |
title_fullStr |
Hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand |
title_full_unstemmed |
Hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand |
title_sort |
hydrate dissociation induced by depressurization in conjunction with warm brine stimulation in cubic hydrate simulator with silica sand |
publishDate |
2016 |
url |
http://ir.giec.ac.cn/handle/344007/11749 https://doi.org/10.1016/j.apenergy.2016.04.090 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
APPLIED ENERGY http://ir.giec.ac.cn/handle/344007/11749 doi:10.1016/j.apenergy.2016.04.090 |
op_doi |
https://doi.org/10.1016/j.apenergy.2016.04.090 |
container_title |
Applied Energy |
container_volume |
174 |
container_start_page |
181 |
op_container_end_page |
191 |
_version_ |
1766068899621634048 |