Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Thermal Diffusion Characteristics in Permafrost during the Exploitation of Gas Hydrate | |
| Wei, Yusen1,2; Xiong, Youming1; Liu, Zhiqiang3; Lu, Jingsheng4 | |
| 2021-03-10 | |
| Source Publication | GEOFLUIDS
 |
| ISSN | 1468-8115 |
| Volume | 2021Pages:10 |
| Corresponding Author | Xiong, Youming(xiongym@swpu.edu.cn) ; Lu, Jingsheng(lujs@ms.giec.ac.cn) |
| Abstract | Methane hydrate is the vast potential resources of natural gas in the permafrost and marine areas. Due to the occurrence of phase transition, the gas hydrate is dissociated into gas and water and absorbs lots of heat. The incomprehensive knowledge of endothermic reaction in permafrost sediments still restricted the production efficiency of hydrate commercial development. This endothermic reaction leads to a complex thermal diffusion in permafrost, which directly influences the phase transition in turn. In this research, the heat during the exploitation is transferred in two forms (specific heat and latent heat). Besides, the melting point is not constant but depends on the pore size of the reservoir rock. According to these features, a thermal diffusion model with phase transition is established. To calculate the governing equation, the pore size distribution is obtained by using the nuclear magnetic resonance (NMR) method. The heating tests are conducted and simulated to calibrate the coefficient (i.e., transverse surface relaxivity) of NMR. Then, the temperature field evolution of the hydrate reservoir during the exploitation is simulated by using the calibrated values. The results show that the temperature curves have a typical plateau related to the pore size distribution, which is effective to obtain the surface relaxivity. The heat transfer is remarkably limited by the endothermic effect of the phase transition. The hydrate recovery efficiency may depend largely on the heating capacity of the engineering operation and the rate of gas production. Compared to the conventional petroleum industry, it is significant to control the maximum temperature and temperature distribution in engineering operations during hydrate development. This research on the temperature behavior during onshore permafrost hydrate production could provide the theoretical support to control heat behavior of offshore hydrate production. |
| DOI | 10.1155/2021/6620288 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Science Foundation of China[52004261] ; Natural Science Foundation of China[51661165011] ; PetroChina Innovation Foundation[2019D-5007-0216] ; Fund of Key Laboratory of Gas Hydrate Chinese Academy of Sciences[E029020501] ; National Key Research and Development Program of China[2017YFC0307305] ; National Key Research and Development Program of China[2019YFC0312301] ; Natural Science Foundation of Guangdong Province[2017A030310448] ; Natural Science Foundation of Guangdong Province[2018B0303110007] ; Guangdong Province MEDProject[GDME-2018D001] ; Guangdong Province MEDProject[GDME-2018D002] ; Guangdong Marine Economy Promotion Projects (MEPP) fund[GDOE[2019]A41] ; Guangdong Special Support Program[2019BT02L278] |
| WOS Research Area | Geochemistry & Geophysics ; Geology |
| Funding Organization | Natural Science Foundation of China ; PetroChina Innovation Foundation ; Fund of Key Laboratory of Gas Hydrate Chinese Academy of Sciences ; National Key Research and Development Program of China ; Natural Science Foundation of Guangdong Province ; Guangdong Province MEDProject ; Guangdong Marine Economy Promotion Projects (MEPP) fund ; Guangdong Special Support Program |
| WOS Subject | Geochemistry & Geophysics ; Geology |
| WOS ID | WOS:000631886800005 |
| Publisher | WILEY-HINDAWI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/32845 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Xiong, Youming; Lu, Jingsheng |
| Affiliation | 1.Southwest Petr Univ, Sch Petr Engn, Chengdu 610500, Peoples R China 2.CNOOC Shenzhen Branch, Shenzhen 518000, Peoples R China 3.China Univ Petr, Coll Petr Engn, Beijing 102249, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
| Recommended Citation GB/T 7714 | Wei, Yusen,Xiong, Youming,Liu, Zhiqiang,et al. Thermal Diffusion Characteristics in Permafrost during the Exploitation of Gas Hydrate[J]. GEOFLUIDS,2021,2021:10. |
| APA | Wei, Yusen,Xiong, Youming,Liu, Zhiqiang,&Lu, Jingsheng.(2021).Thermal Diffusion Characteristics in Permafrost during the Exploitation of Gas Hydrate.GEOFLUIDS,2021,10. |
| MLA | Wei, Yusen,et al."Thermal Diffusion Characteristics in Permafrost during the Exploitation of Gas Hydrate".GEOFLUIDS 2021(2021):10. |
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