Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea | |
Li, Gang1; Moridis, George J.2; Zhang, Keni2; Li, Xiao-Sen1
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| 2010-11-01 | |
| Source Publication | ENERGY & FUELS
 |
| ISSN | 0887-0624 |
| Volume | 24Pages:6018-6033 |
| Contribution Rank | [Li, Gang; Li, Xiao-Sen] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China; [Moridis, George J.; Zhang, Keni] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA |
| Cooperation Status | 国际 |
| Abstract | 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 water production, making the hydrate accumulations at the Shenhu Area unattractive production targets with current technology |
| Subtype | Article |
| Other Abstract | 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 water production, making the hydrate accumulations at the Shenhu Area unattractive production targets with current technology |
| Keyword | Methane Hydrate Simulation Sediments Zone Well |
| Subject Area | Energy & Fuels ; Engineering |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1021/ef100930m |
| WOS Subject Extended | Energy & Fuels ; Engineering |
| URL | 查看原文 |
| WOS Keyword | METHANE HYDRATE ; SIMULATION ; SEDIMENTS ; ZONE ; WELL |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | National Natural Science Foundation of China [20773133, 51004089, 51076155]; CAS [KGCX2 YW 3X6, YZ200717]; Science & Technology Program of Guangdong Province [2009B050600006]; Assistant Secretary for Fossil Energy Office of Natural Gas and Petroleum Technology, through the National Energy Technology Laboratory, under the U S Department of Energy [DE AC02 05CH11231] |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000285265800023 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/8477 |
| Collection | 中国科学院广州能源研究所 天然气水合物开采技术与综合利用实验室 |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China 2.Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA |
| Recommended Citation GB/T 7714 | Li, Gang,Moridis, George J.,Zhang, Keni,et al. Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea[J]. ENERGY & FUELS,2010,24:6018-6033. |
| APA | Li, Gang,Moridis, George J.,Zhang, Keni,&Li, Xiao-Sen.(2010).Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea.ENERGY & FUELS,24,6018-6033. |
| MLA | Li, Gang,et al."Evaluation of Gas Production Potential from Marine Gas Hydrate Deposits in Shenhu Area of South China Sea".ENERGY & FUELS 24(2010):6018-6033. |
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