Numerical Evaluation of Long-Term Depressurization Production of a Multilayer Gas Hydrate Reservoir and Its Hydraulic Fracturing Applications
In this study, a multilayer gas hydrate reservoir model was implemented based on the geological conditions of the Shenhu area in the South China Sea (SHCS) to predict the production performance of the reservoir during long-term depressurization. Hydraulic fracturing technology was introduced to boos...
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AMER CHEMICAL SOC
2022
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/36619 2023-12-24T10:18:34+01:00 Numerical Evaluation of Long-Term Depressurization Production of a Multilayer Gas Hydrate Reservoir and Its Hydraulic Fracturing Applications Lv, Tao Cai, Jing Ding, Yalong Pan, Jie Chen, Zhaoyang Li, Xiaosen 2022-03-17 http://ir.giec.ac.cn/handle/344007/36619 https://doi.org/10.1021/acs.energyfuels.1c04017 英语 eng AMER CHEMICAL SOC ENERGY & FUELS http://ir.giec.ac.cn/handle/344007/36619 doi:10.1021/acs.energyfuels.1c04017 METHANE HYDRATE PRODUCTION BEHAVIOR DISSOCIATION SHENHU Energy & Fuels Engineering Chemical 期刊论文 2022 ftchacadsciegiec https://doi.org/10.1021/acs.energyfuels.1c04017 2023-11-24T01:15:48Z In this study, a multilayer gas hydrate reservoir model was implemented based on the geological conditions of the Shenhu area in the South China Sea (SHCS) to predict the production performance of the reservoir during long-term depressurization. Hydraulic fracturing technology was introduced to boost production, and its positive/negative impact on the production behavior of the hydrate reservoir was evaluated. Results show that hydrate dissociation is severely constrained by pressure propagation and fluid flow in the low reservoir. During production, almost half of the wellhead gas production is from the dissolved gas in seawater and the free gas contained in sediments. Massive secondary hydrate forms and gathers in the hydrate layer I and near the interface of hydrate layers. Underlying free gas is conducive to reservoir production, in which the cumulative wellhead gas production can be increased by similar to 59% compared to the reservoir lacking underlying free gas. On one hand, hydraulic fracturing can significantly promote hydrate dissociation and increase the capacity of production, especially for long-distance fracture implemented in the middle part of the hydrate layer. On the other hand, high permeability in the fractured zone also provides a convenient channel for water in the sedimentary layer. After hydraulic fracturing, the production efficiency of the reservoir is still low due to the involvement of more pore water. In future, the combination of hydraulic fracturing and other auxiliary means can be considered to develop hydrate reservoirs. Report Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Energy & Fuels 36 6 3154 3168 |
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Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
METHANE HYDRATE PRODUCTION BEHAVIOR DISSOCIATION SHENHU Energy & Fuels Engineering Chemical |
spellingShingle |
METHANE HYDRATE PRODUCTION BEHAVIOR DISSOCIATION SHENHU Energy & Fuels Engineering Chemical Lv, Tao Cai, Jing Ding, Yalong Pan, Jie Chen, Zhaoyang Li, Xiaosen Numerical Evaluation of Long-Term Depressurization Production of a Multilayer Gas Hydrate Reservoir and Its Hydraulic Fracturing Applications |
topic_facet |
METHANE HYDRATE PRODUCTION BEHAVIOR DISSOCIATION SHENHU Energy & Fuels Engineering Chemical |
description |
In this study, a multilayer gas hydrate reservoir model was implemented based on the geological conditions of the Shenhu area in the South China Sea (SHCS) to predict the production performance of the reservoir during long-term depressurization. Hydraulic fracturing technology was introduced to boost production, and its positive/negative impact on the production behavior of the hydrate reservoir was evaluated. Results show that hydrate dissociation is severely constrained by pressure propagation and fluid flow in the low reservoir. During production, almost half of the wellhead gas production is from the dissolved gas in seawater and the free gas contained in sediments. Massive secondary hydrate forms and gathers in the hydrate layer I and near the interface of hydrate layers. Underlying free gas is conducive to reservoir production, in which the cumulative wellhead gas production can be increased by similar to 59% compared to the reservoir lacking underlying free gas. On one hand, hydraulic fracturing can significantly promote hydrate dissociation and increase the capacity of production, especially for long-distance fracture implemented in the middle part of the hydrate layer. On the other hand, high permeability in the fractured zone also provides a convenient channel for water in the sedimentary layer. After hydraulic fracturing, the production efficiency of the reservoir is still low due to the involvement of more pore water. In future, the combination of hydraulic fracturing and other auxiliary means can be considered to develop hydrate reservoirs. |
format |
Report |
author |
Lv, Tao Cai, Jing Ding, Yalong Pan, Jie Chen, Zhaoyang Li, Xiaosen |
author_facet |
Lv, Tao Cai, Jing Ding, Yalong Pan, Jie Chen, Zhaoyang Li, Xiaosen |
author_sort |
Lv, Tao |
title |
Numerical Evaluation of Long-Term Depressurization Production of a Multilayer Gas Hydrate Reservoir and Its Hydraulic Fracturing Applications |
title_short |
Numerical Evaluation of Long-Term Depressurization Production of a Multilayer Gas Hydrate Reservoir and Its Hydraulic Fracturing Applications |
title_full |
Numerical Evaluation of Long-Term Depressurization Production of a Multilayer Gas Hydrate Reservoir and Its Hydraulic Fracturing Applications |
title_fullStr |
Numerical Evaluation of Long-Term Depressurization Production of a Multilayer Gas Hydrate Reservoir and Its Hydraulic Fracturing Applications |
title_full_unstemmed |
Numerical Evaluation of Long-Term Depressurization Production of a Multilayer Gas Hydrate Reservoir and Its Hydraulic Fracturing Applications |
title_sort |
numerical evaluation of long-term depressurization production of a multilayer gas hydrate reservoir and its hydraulic fracturing applications |
publisher |
AMER CHEMICAL SOC |
publishDate |
2022 |
url |
http://ir.giec.ac.cn/handle/344007/36619 https://doi.org/10.1021/acs.energyfuels.1c04017 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
ENERGY & FUELS http://ir.giec.ac.cn/handle/344007/36619 doi:10.1021/acs.energyfuels.1c04017 |
op_doi |
https://doi.org/10.1021/acs.energyfuels.1c04017 |
container_title |
Energy & Fuels |
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36 |
container_issue |
6 |
container_start_page |
3154 |
op_container_end_page |
3168 |
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1786207605431992320 |