Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea
The Shenhu Area is located in the Pearl River Mouth Basin the northern continental slope of the South China Sea In 2007 gas hydrate samples were recovered during the scientific expedition conducted by the China Geological Survey in the area Using numerical simulation and currently available data fro...
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/8477 2023-05-15T17:12:11+02:00 Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea Li, Gang Moridis, George J. Zhang, Keni Li, Xiao-Sen 2010-11-01 http://ir.giec.ac.cn/handle/344007/8477 https://doi.org/10.1021/ef100930m 英语 eng ENERGY & FUELS Li, Gang; Moridis, George J.; Zhang, Keni; Li, Xiao-Sen.Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea,ENERGY & FUELS,2010,24():16,6018-6033 http://ir.giec.ac.cn/handle/344007/8477 https://dx.doi.org/10.1021/ef100930m doi:10.1021/ef100930m 6 Methane Hydrate Simulation Sediments Zone Well Energy & Fuels Engineering Science & Technology Technology Chemical Article 期刊论文 2010 ftchacadsciegiec https://doi.org/10.1021/ef100930m 2022-09-23T14:12:06Z The Shenhu Area is located in the Pearl River Mouth Basin the northern continental slope of the South China Sea In 2007 gas hydrate samples were recovered during the scientific expedition conducted by the China Geological Survey in the area Using numerical simulation and currently available data from site measurements including the water depth, thickness of the hydrate bearing layer (HBL) sediment porosity, salinity, and pressures and temperatures at key locations, we developed preliminarily estimates of the production potential of these hydrates as gas-producing resource We used measurements of ambient temperature in the sediments to determine the local geothermal gradient Evidence from this and other field studies showed that the initial pressure distribution followed the hydrostatic gradient Direct measurements from core samples provided estimates of the initial hydrate saturation and of the intrinsic permeabilities in the various strata of the system The hydrate accumulations in the Shenhu Area appear to be hydrate deposits involving a single HBL within fine textured sediments and boundaries (overburden and underburden layers) which have the same intrinsic permeabilities with the HBL We investigated gas production from the Shenhu hydrates by means of depressurization and thermal stimulation using a single horizontal well placed in the middle of the HBL The simulation results indicated that the hydrates dissociate along cylindrical Interfaces around the well and along horizontal dissociation interfaces at the top and bottom of the HBL Production is invariably lower than that attainable in a confined system, and thermal stimulation is shown to affect only a limited region around the well The sensitivity analysis demonstrates the dependence of production on the level of depressurization, the initial hydrate saturation, the intrinsic permeability of the HBL, the temperature of the well, and the initial temperature of the HBL A general observation is that gas production is low and is burdened with significant ... Article in Journal/Newspaper Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Energy & Fuels 24 11 6018 6033 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Methane Hydrate Simulation Sediments Zone Well Energy & Fuels Engineering Science & Technology Technology Chemical |
spellingShingle |
Methane Hydrate Simulation Sediments Zone Well Energy & Fuels Engineering Science & Technology Technology Chemical Li, Gang Moridis, George J. Zhang, Keni Li, Xiao-Sen Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea |
topic_facet |
Methane Hydrate Simulation Sediments Zone Well Energy & Fuels Engineering Science & Technology Technology Chemical |
description |
The Shenhu Area is located in the Pearl River Mouth Basin the northern continental slope of the South China Sea In 2007 gas hydrate samples were recovered during the scientific expedition conducted by the China Geological Survey in the area Using numerical simulation and currently available data from site measurements including the water depth, thickness of the hydrate bearing layer (HBL) sediment porosity, salinity, and pressures and temperatures at key locations, we developed preliminarily estimates of the production potential of these hydrates as gas-producing resource We used measurements of ambient temperature in the sediments to determine the local geothermal gradient Evidence from this and other field studies showed that the initial pressure distribution followed the hydrostatic gradient Direct measurements from core samples provided estimates of the initial hydrate saturation and of the intrinsic permeabilities in the various strata of the system The hydrate accumulations in the Shenhu Area appear to be hydrate deposits involving a single HBL within fine textured sediments and boundaries (overburden and underburden layers) which have the same intrinsic permeabilities with the HBL We investigated gas production from the Shenhu hydrates by means of depressurization and thermal stimulation using a single horizontal well placed in the middle of the HBL The simulation results indicated that the hydrates dissociate along cylindrical Interfaces around the well and along horizontal dissociation interfaces at the top and bottom of the HBL Production is invariably lower than that attainable in a confined system, and thermal stimulation is shown to affect only a limited region around the well The sensitivity analysis demonstrates the dependence of production on the level of depressurization, the initial hydrate saturation, the intrinsic permeability of the HBL, the temperature of the well, and the initial temperature of the HBL A general observation is that gas production is low and is burdened with significant ... |
format |
Article in Journal/Newspaper |
author |
Li, Gang Moridis, George J. Zhang, Keni Li, Xiao-Sen |
author_facet |
Li, Gang Moridis, George J. Zhang, Keni Li, Xiao-Sen |
author_sort |
Li, Gang |
title |
Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea |
title_short |
Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea |
title_full |
Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea |
title_fullStr |
Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea |
title_full_unstemmed |
Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea |
title_sort |
evaluation of gas production potential from marine gas hydrate deposits in shenhu area of south china sea |
publishDate |
2010 |
url |
http://ir.giec.ac.cn/handle/344007/8477 https://doi.org/10.1021/ef100930m |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
ENERGY & FUELS Li, Gang; Moridis, George J.; Zhang, Keni; Li, Xiao-Sen.Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea,ENERGY & FUELS,2010,24():16,6018-6033 http://ir.giec.ac.cn/handle/344007/8477 https://dx.doi.org/10.1021/ef100930m doi:10.1021/ef100930m |
op_rights |
6 |
op_doi |
https://doi.org/10.1021/ef100930m |
container_title |
Energy & Fuels |
container_volume |
24 |
container_issue |
11 |
container_start_page |
6018 |
op_container_end_page |
6033 |
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1766068968512028672 |