The double-edged characteristics of the soaking time during hydrate dissociation by periodic depressurization combined with hot water injection
文献类型：期刊论文
| 作者 | Li, Xiao-Yan2; Wan, Kun1,3,4; Wang, Yi3,4; Li, Xiao-Sen3,4 |
| 刊名 | APPLIED ENERGY
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 325页码:11 |
| 关键词 | Methane hydrate Soaking time Depressurization Thermal stimulation Heat transfer |
| ISSN号 | 0306-2619 |
| DOI | 10.1016/j.apenergy.2022.119891 |
| 通讯作者 | Wang, Yi(wangyi@ms.giec.ac.cn) ; Li, Xiao-Sen(lixs@ms.giec.ac.cn) |
| 英文摘要 | The combination of depressurization and thermal stimulation is considered as a promising production method of gas hydrates. In this study, the experiments of methane hydrate dissociation by periodic depressurization combined with hot water injection (D&H) were conducted. Each cycle of D&H was consisted of the hot water injection stage, the soaking stage, and the depressurization stage (below the equilibrium pressure). The in-fluences of the soaking time (4 min, 8 min, 12 min) on the hydrate dissociation behavior, the ratio of gas to water, and the energy efficiency were analyzed. The experimental results showed that, in the early period of depressurization combined with hot water injection stage (DHS), most of the consumed heat (70-90 %) during hydrate dissociation was provided by the heat transferred from surroundings. The proportion of the heat of the injected hot water to the consumed heat in the early period of DHS was only 10-30 %, and it quickly increased to 50-60 % in the later period of DHS. The calculation showed that the reduction of the soaking time improved the heat transfer rate from surroundings to the hydrate reservoirs at the soaking stage, thereby increasing the hydrate dissociation rate. However, the reduction of the soaking time decreased the thermal efficiency and the energy efficiency during hydrate production. For the soaking time of 4 min, 8 min, and 12 min, the range of the thermal efficiency were respectively 0.34-0.82, 0.50-1.06, and 0.54-1.20, and the range of the energy efficiency were respectively 6.24-14.89, 8.91-18.82, and 9.62-21.13. Meanwhile, the reduction of the soaking time also decreased the ratio of gas production to water production, which was adverse for hydrate production. This study makes up for the deficiency that the current understanding of soaking time in periodic depressurization com-bined with heat injection is insufficient. The research shows that the soaking time has a double-edged charac-teristic, which are helpful for choosing a suitable soaking time during gas hydrate production by periodic depressurization combined with hot water injection in actual field. |
| WOS关键词 | NATURAL-GAS HYDRATE ; METHANE HYDRATE ; THERMAL-STIMULATION ; PUFF METHOD ; PRODUCTION BEHAVIOR ; CARBON-DIOXIDE ; POROUS-MEDIA ; HUFF ; RESERVOIR ; SEDIMENT |
| 资助项目 | Key Program of National Natural Science Foundation of China[51736009] ; National Natural Science Foundation of China[52122602] ; Guangdong Special Support Program-Local innovation and entrepreneurship team project[2019BT02L278] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2022D043] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2020D044] ; Youth Innovation Promotion Association CAS[2018382] ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences[YJKYYQ20200061] ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province[2019B030302004] ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province[2020B0301030003] ; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development[E239kf0301] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000874937300006 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | Key Program of National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Special Support Program-Local innovation and entrepreneurship team project ; Special Project for Marine Economy Development of Guangdong Province ; Youth Innovation Promotion Association CAS ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province ; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development |
| 源URL | [http://ir.giec.ac.cn/handle/344007/37606]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Wang, Yi; Li, Xiao-Sen |
| 作者单位 | 1.Univ Sci & Technol China, Sch Energy Sci & Engn, Hefei 230000, Peoples R China 2.Changzhou Univ, Jiangsu Key Lab Oil & Gas Storage & Transportat Te, Changzhou 213016, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiao-Yan,Wan, Kun,Wang, Yi,et al. The double-edged characteristics of the soaking time during hydrate dissociation by periodic depressurization combined with hot water injection[J]. APPLIED ENERGY,2022,325:11. |
| APA | Li, Xiao-Yan,Wan, Kun,Wang, Yi,&Li, Xiao-Sen.(2022).The double-edged characteristics of the soaking time during hydrate dissociation by periodic depressurization combined with hot water injection.APPLIED ENERGY,325,11. |
| MLA | Li, Xiao-Yan,et al."The double-edged characteristics of the soaking time during hydrate dissociation by periodic depressurization combined with hot water injection".APPLIED ENERGY 325(2022):11. |
入库方式： OAI收割
来源：广州能源研究所
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