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Assessment of Gas Production Potential from Hydrate Reservoir in Qilian Mountain Permafrost Using Five-Spot Horizontal Well System
Liang, Yun-Pei1,2; Li, Xiao-Sen3; Li, Bo1,2
2015-10-01
Source PublicationEnergies
Volume8Issue:10
AbstractThe main purpose of this study is to investigate the production behaviors of gas hydrate at site DK-2 in the Qilian Mountain permafrost using the novel five-spot well (5S) system by means of numerical simulation. The whole system is composed of several identical units, and each single unit consists of one injection well and four production wells. All the wells are placed horizontally in the hydrate deposit. The combination method of depressurization and thermal stimulation is employed for hydrate dissociation in the system. Simulation results show that favorable gas production and hydrate dissociation rates, gas-to-water ratio, and energy ratio can be acquired using this kind of multi-well system under suitable heat injection and depressurization driving forces, and the water production rate is manageable in the entire production process under current technology. In addition, another two kinds of two-spot well (2S) systems have also been employed for comparison. It is found that the 5S system will be more commercially profitable than the 2S configurations for gas production under the same operation conditions. Sensitivity analysis indicates that the gas production performance is dependent on the heat injection rate and the well spacing of the 5S system.
SubtypeArticle
KeywordGas Hydrate Depressurization Thermal Stimulation Five-spot Well Qilian Mountain Permafrost
WOS HeadingsScience & Technology ; Technology
DOI10.3390/en81010796
WOS Subject ExtendedEnergy & Fuels
WOS KeywordQINGHAI-TIBET PLATEAU ; METHANE HYDRATE ; POROUS-MEDIA ; NUMERICAL-SIMULATION ; SENSITIVITY-ANALYSIS ; PUFF METHOD ; NORTHWEST CHINA ; DEPOSITS ; DEPRESSURIZATION ; DISSOCIATION
Indexed BySCI
Language英语
WOS SubjectEnergy & Fuels
WOS IDWOS:000364230500010
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10899
Collection中国科学院广州能源研究所
Affiliation1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China
2.Chongqing Univ, Coll Resources & Environm Sci, Chongqing 400044, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China
Recommended Citation
GB/T 7714
Liang, Yun-Pei,Li, Xiao-Sen,Li, Bo. Assessment of Gas Production Potential from Hydrate Reservoir in Qilian Mountain Permafrost Using Five-Spot Horizontal Well System[J]. Energies,2015,8(10).
APA Liang, Yun-Pei,Li, Xiao-Sen,&Li, Bo.(2015).Assessment of Gas Production Potential from Hydrate Reservoir in Qilian Mountain Permafrost Using Five-Spot Horizontal Well System.Energies,8(10).
MLA Liang, Yun-Pei,et al."Assessment of Gas Production Potential from Hydrate Reservoir in Qilian Mountain Permafrost Using Five-Spot Horizontal Well System".Energies 8.10(2015).
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