Gas Production from Hot Water Circulation through Hydraulic Fractures in Methane Hydrate-Bearing Sediments: THC-Coupled Simulation of Production Mechanisms
Methane hydrates, widely found in permafrost and deep marine sediments, have great potential as a future energy source. Conventional production schemes perform poorly for challenging hydrate reservoirs with low permeability. We propose an efficient production scheme by combining hydraulic fracturing...
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Online Access: | http://www.osti.gov/servlets/purl/1643775 https://www.osti.gov/biblio/1643775 https://doi.org/10.1021/acs.energyfuels.0c00241 |
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ftosti:oai:osti.gov:1643775 2023-07-30T04:04:55+02:00 Gas Production from Hot Water Circulation through Hydraulic Fractures in Methane Hydrate-Bearing Sediments: THC-Coupled Simulation of Production Mechanisms Ju, Xin Liu, Fang Fu, Pengcheng White, Mark D. Settgast, Randolph R. Morris, Joseph P. 2021-03-24 application/pdf http://www.osti.gov/servlets/purl/1643775 https://www.osti.gov/biblio/1643775 https://doi.org/10.1021/acs.energyfuels.0c00241 unknown http://www.osti.gov/servlets/purl/1643775 https://www.osti.gov/biblio/1643775 https://doi.org/10.1021/acs.energyfuels.0c00241 doi:10.1021/acs.energyfuels.0c00241 03 NATURAL GAS 2021 ftosti https://doi.org/10.1021/acs.energyfuels.0c00241 2023-07-11T09:44:41Z Methane hydrates, widely found in permafrost and deep marine sediments, have great potential as a future energy source. Conventional production schemes perform poorly for challenging hydrate reservoirs with low permeability. We propose an efficient production scheme by combining hydraulic fracturing from horizontal wells and hot water circulation through fractures. A fully coupled thermo-hydro-chemical (THC) model is developed to simulate the key physical processes during gas production from a hydrate reservoir representative of typical geological settings in Shenhu, South China Sea. We found that the gas production process has two distinct stages divided by thermal breakthrough: a relatively short prebreakthrough stage and a postbreakthrough stage yielding stable gas production. Heat advection along and near the hydraulic fracture dominates the prebreakthrough stage, whereas conduction-driven thermal recovery in the volume around fractures dominates the postbreakthrough stage. We identified that the steady-state injection temperature has a strong effect on the performance of the proposed scheme while the fluid mass circulation rate has a moderate impact beyond a threshold. The proposed scheme proves to be efficient and robust over a range of reservoir conditions with respect to initial hydrate saturation and intrinsic permeability, including their spatial heterogeneities, thereby offering a promising solution for challenging reservoir conditions. Other/Unknown Material Methane hydrate permafrost SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Energy & Fuels 34 4 4448 4465 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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03 NATURAL GAS Ju, Xin Liu, Fang Fu, Pengcheng White, Mark D. Settgast, Randolph R. Morris, Joseph P. Gas Production from Hot Water Circulation through Hydraulic Fractures in Methane Hydrate-Bearing Sediments: THC-Coupled Simulation of Production Mechanisms |
topic_facet |
03 NATURAL GAS |
description |
Methane hydrates, widely found in permafrost and deep marine sediments, have great potential as a future energy source. Conventional production schemes perform poorly for challenging hydrate reservoirs with low permeability. We propose an efficient production scheme by combining hydraulic fracturing from horizontal wells and hot water circulation through fractures. A fully coupled thermo-hydro-chemical (THC) model is developed to simulate the key physical processes during gas production from a hydrate reservoir representative of typical geological settings in Shenhu, South China Sea. We found that the gas production process has two distinct stages divided by thermal breakthrough: a relatively short prebreakthrough stage and a postbreakthrough stage yielding stable gas production. Heat advection along and near the hydraulic fracture dominates the prebreakthrough stage, whereas conduction-driven thermal recovery in the volume around fractures dominates the postbreakthrough stage. We identified that the steady-state injection temperature has a strong effect on the performance of the proposed scheme while the fluid mass circulation rate has a moderate impact beyond a threshold. The proposed scheme proves to be efficient and robust over a range of reservoir conditions with respect to initial hydrate saturation and intrinsic permeability, including their spatial heterogeneities, thereby offering a promising solution for challenging reservoir conditions. |
author |
Ju, Xin Liu, Fang Fu, Pengcheng White, Mark D. Settgast, Randolph R. Morris, Joseph P. |
author_facet |
Ju, Xin Liu, Fang Fu, Pengcheng White, Mark D. Settgast, Randolph R. Morris, Joseph P. |
author_sort |
Ju, Xin |
title |
Gas Production from Hot Water Circulation through Hydraulic Fractures in Methane Hydrate-Bearing Sediments: THC-Coupled Simulation of Production Mechanisms |
title_short |
Gas Production from Hot Water Circulation through Hydraulic Fractures in Methane Hydrate-Bearing Sediments: THC-Coupled Simulation of Production Mechanisms |
title_full |
Gas Production from Hot Water Circulation through Hydraulic Fractures in Methane Hydrate-Bearing Sediments: THC-Coupled Simulation of Production Mechanisms |
title_fullStr |
Gas Production from Hot Water Circulation through Hydraulic Fractures in Methane Hydrate-Bearing Sediments: THC-Coupled Simulation of Production Mechanisms |
title_full_unstemmed |
Gas Production from Hot Water Circulation through Hydraulic Fractures in Methane Hydrate-Bearing Sediments: THC-Coupled Simulation of Production Mechanisms |
title_sort |
gas production from hot water circulation through hydraulic fractures in methane hydrate-bearing sediments: thc-coupled simulation of production mechanisms |
publishDate |
2021 |
url |
http://www.osti.gov/servlets/purl/1643775 https://www.osti.gov/biblio/1643775 https://doi.org/10.1021/acs.energyfuels.0c00241 |
genre |
Methane hydrate permafrost |
genre_facet |
Methane hydrate permafrost |
op_relation |
http://www.osti.gov/servlets/purl/1643775 https://www.osti.gov/biblio/1643775 https://doi.org/10.1021/acs.energyfuels.0c00241 doi:10.1021/acs.energyfuels.0c00241 |
op_doi |
https://doi.org/10.1021/acs.energyfuels.0c00241 |
container_title |
Energy & Fuels |
container_volume |
34 |
container_issue |
4 |
container_start_page |
4448 |
op_container_end_page |
4465 |
_version_ |
1772816560694493184 |