Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir | |
Jin, Guangrong1; Liu, Jie1; Liu, Lihua1; Zhai, Haizhen1; Wu, Daidai1 ; Xu, Tianfu2
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| 2020-12-01 | |
| Source Publication | MARINE AND PETROLEUM GEOLOGY
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| ISSN | 0264-8172 |
| Volume | 122Pages:21 |
| Corresponding Author | Liu, Lihua(liulh@ms.giec.ac.cn) |
| Abstract | The lithological characteristics of subsurface formations control the variations in the permeability. Herein, the effect of lithological rhythm on gas production was numerically investigated for depressurization applied in a confined hydrate reservoir. The lithological rhythm structures from simple uniform, positive, and reverse rhythms to complex composite rhythms were designed. The water-to-gas ratio showed that economic feasibility of all rhythms varied with the expansion of the hydrate dissociation region. The depth of high permeability region affected the hydrate dissociation and temperature recovery. Therefore, the gas production rate of positive rhythm was higher than that of the uniform and reverse rhythms, while the reverse rhythm was economically more suitable in the later stages of the production. Furthermore, the gas and water production rates decreased with the increase in the permeability contrast. The number of composite rhythmic layers negligibly affected the gas production rate, while it significantly affected the hydrate saturation distribution, indicating an increasing hydraulic connectivity in the lateral direction that may lead to water breakthrough. Moreover, the rhythmic structures significantly affected the gas production rate and the economic feasibility, and controlled the developed depth of high hydraulic connectivity. Therefore, minor and large seepage pathways could form in a complex rhythm reservoir. |
| Keyword | Natural gas hydrate Lithological rhythm Permeability contrast Rhythm structure Hydraulic connectivity Economic feasibility |
| DOI | 10.1016/j.marpetgeo.2020.104696 |
| WOS Keyword | STRATIGRAPHIC TEST WELL ; SOUTH CHINA SEA ; BEARING SEDIMENT ; METHANE HYDRATE ; SHENHU AREA ; THERMAL-STIMULATION ; OFFSHORE PRODUCTION ; NANKAI TROUGH ; PERMEABILITY ; STABILITY |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41776071] ; National Natural Science Foundation of China[41602255] ; Guangdong MEPP Fund[GDOE[2019]A41] ; Guangdong MEPP Fund[GDOE [2019]A39] ; Foundation of the CAS Key Laboratory of Gas Hydrate[E0290207] ; Foundation of the CAS Key Laboratory of Gas Hydrate[y807jd1001] ; Foundation of the CAS Key Laboratory of Gas Hydrate[y807je1001] ; Institution of South China Sea Ecology and Environmental Engineering, CAS[ISEE2018Y1303] |
| WOS Research Area | Geology |
| Funding Organization | National Natural Science Foundation of China ; Guangdong MEPP Fund ; Foundation of the CAS Key Laboratory of Gas Hydrate ; Institution of South China Sea Ecology and Environmental Engineering, CAS |
| WOS Subject | Geosciences, Multidisciplinary |
| WOS ID | WOS:000581551200064 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/34893 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Liu, Lihua |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 2.Jilin Univ, Key Lab Groundwater Resources & Environm, Minist Educ, Changchun 130021, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Jin, Guangrong,Liu, Jie,Liu, Lihua,et al. Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir[J]. MARINE AND PETROLEUM GEOLOGY,2020,122:21. |
| APA | Jin, Guangrong,Liu, Jie,Liu, Lihua,Zhai, Haizhen,Wu, Daidai,&Xu, Tianfu.(2020).Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir.MARINE AND PETROLEUM GEOLOGY,122,21. |
| MLA | Jin, Guangrong,et al."Effect of lithological rhythm on gas production performance via depressurization through a vertical well in a confined hydrate reservoir".MARINE AND PETROLEUM GEOLOGY 122(2020):21. |
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