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Evaluation of Gas Production from Marine Hydrate Deposits at the GMGS2-Site 8, Pearl River Mouth Basin, South China Sea
Wang, Yi1,2,3; Feng, Jing-Chun1,2,3,4; Li, Xiao-Sen1,2,3; Zhang, Yu1,2,3; Li, Gang1,2,3
2016-03-01
Source PublicationENERGIES
Volume9Issue:3
AbstractNatural gas hydrate accumulations were confirmed in the Dongsha Area of the South China Sea by the Guangzhou Marine Geological Survey 2 (GMGS2) scientific drilling expedition in 2013. The drilling sites of GMGS2-01, -04, -05, -07, -08, -09, -11, -12, and -16 verified the existence of a hydrate-bearing layer. In this work gas production behavior was evaluated at GMGS2-8 by numerical simulation. The hydrate reservoir in the GMGS2-8 was characterized by dual hydrate layers and a massive hydrate layer. A single vertical well was considered as the well configuration, and depressurization was employed as the dissociation method. Analyses of gas production sensitivity to the production pressure, the thermal conductivity, and the intrinsic permeability were investigated as well. Simulation results indicated that the total gas production from the reference case is approximately 7.3 x 10(7) ST m(3) in 30 years. The average gas production rate in 30 years is 6.7 x 10(3) ST m(3)/day, which is much higher than the previous study in the Shenhu Area of the South China Sea performed by the GMGS-1. Moreover, the maximum gas production rate (9.5 x 10(3) ST m(3)/day) has the same order of magnitude of the first offshore methane hydrate production test in the Nankai Trough. When production pressure decreases from 4.5 to 3.4 MPa, the volume of gas production increases by 20.5%, and when production pressure decreases from 3.4 to 2.3 MPa, the volume of gas production increases by 13.6%. Production behaviors are not sensitive to the thermal conductivity. In the initial 10 years, the higher permeability leads to a larger rate of gas production, however, the final volume of gas production in the case with the lowest permeability is the highest.
SubtypeArticle
KeywordDual Hydrate Layer Natural Gas Hydrate Depressurization Massive Hydrate Layer Pearl River Mouth Basin Guangzhou Marine Geological Survey 2 (Gmgs2)
WOS HeadingsScience & Technology ; Technology
DOI10.3390/en9030222
WOS Subject ExtendedEnergy & Fuels
WOS KeywordSINGLE HORIZONTAL WELL ; METHANE HYDRATE ; SHENHU AREA ; POROUS-MEDIA ; NUMERICAL-SIMULATION ; PRODUCTION BEHAVIOR ; BRINE STIMULATION ; SANDY SEDIMENT ; CARBON-DIOXIDE ; DISSOCIATION
Indexed BySCI
Language英语
WOS SubjectEnergy & Fuels
WOS IDWOS:000373625500025
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/11228
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
3.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Yi,Feng, Jing-Chun,Li, Xiao-Sen,et al. Evaluation of Gas Production from Marine Hydrate Deposits at the GMGS2-Site 8, Pearl River Mouth Basin, South China Sea[J]. ENERGIES,2016,9(3).
APA Wang, Yi,Feng, Jing-Chun,Li, Xiao-Sen,Zhang, Yu,&Li, Gang.(2016).Evaluation of Gas Production from Marine Hydrate Deposits at the GMGS2-Site 8, Pearl River Mouth Basin, South China Sea.ENERGIES,9(3).
MLA Wang, Yi,et al."Evaluation of Gas Production from Marine Hydrate Deposits at the GMGS2-Site 8, Pearl River Mouth Basin, South China Sea".ENERGIES 9.3(2016).
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