Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Study on Hydrate Production Behaviors by Depressurization Combined with Brine Injection in the Excess-Water Hydrate Reservoir | |
Zeng, Haopeng1,2,3; Zhang, Yu1,2 ; Zhang, Lei1,2,3; Chen, Zhaoyang1,2; Li, Xiaosen1,2
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| 2022-06-01 | |
| Source Publication | ENTROPY
 |
| Volume | 24Issue:6Pages:16 |
| Corresponding Author | Zhang, Yu(zhangyu1@ms.giec.ac.cn) ; Li, Xiaosen(lixs@ms.giec.ac.cn) |
| Abstract | Depressurization combined with brine injection is a potential method for field production of natural gas hydrate, which can significantly improve production efficiency and avoid secondary formation of hydrate. In this work, the experiments of hydrate production using depressurization combined with brine injection from a simulated excess-water hydrate reservoir were performed, and the effects of NaCl concentration on hydrate decomposition, temperature change, and heat transfer in the reservoir were investigated. The experimental results indicate that there is little gas production during depressurization in a excess-water hydrate reservoir, and the gas dissociated from hydrate is trapped in pores of sediments. The high-water production reduces the final gas recovery, which is lower than 70% in the experiments. The increasing NaCl concentration only effectively promotes gas production rate in the early stage. The final cumulative gas production and average gas production rate have little difference in different experiments. The NaCl concentration of the produced water is significantly higher than that which is in contact with hydrate in the sediments because the water produced by hydrate decomposition exists on the surface of undissociated hydrate. The high concentration of NaCl in the produced water from the reactor significantly reduces the promoting effect and efficiency of NaCl solution on hydrate decomposition. The injection of NaCl solution decreases the lowest temperature in sediments during hydrate production, and increases the sensible heat and heat transfer from environment for hydrate decomposition. The changes of temperature and resistance effectively reflect the distribution of the injected NaCl solution in the hydrate reservoir. |
| Keyword | methane hydrate depressurization NaCl concentration gas production excess-water |
| DOI | 10.3390/e24060765 |
| WOS Keyword | NATURAL-GAS HYDRATE ; METHANE HYDRATE ; THERMAL-STIMULATION ; DISSOCIATION ; DECOMPOSITION ; TECHNOLOGY ; SEDIMENTS ; HEAT |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52076208] ; National Natural Science Foundation of China[51736009] ; Guangdong Special Support Program[2019BT02L278] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2020D044] ; Science and Technology Program of Guangzhou[20202102080159] ; Guangdong Basic and Applied Basic Research Foundation[2022A1515010835] |
| WOS Research Area | Physics |
| Funding Organization | National Natural Science Foundation of China ; Guangdong Special Support Program ; Special Project for Marine Economy Development of Guangdong Province ; Science and Technology Program of Guangzhou ; Guangdong Basic and Applied Basic Research Foundation |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000816156500001 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/36920 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Zhang, Yu; Li, Xiaosen |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100083, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Zeng, Haopeng,Zhang, Yu,Zhang, Lei,et al. Study on Hydrate Production Behaviors by Depressurization Combined with Brine Injection in the Excess-Water Hydrate Reservoir[J]. ENTROPY,2022,24(6):16. |
| APA | Zeng, Haopeng,Zhang, Yu,Zhang, Lei,Chen, Zhaoyang,&Li, Xiaosen.(2022).Study on Hydrate Production Behaviors by Depressurization Combined with Brine Injection in the Excess-Water Hydrate Reservoir.ENTROPY,24(6),16. |
| MLA | Zeng, Haopeng,et al."Study on Hydrate Production Behaviors by Depressurization Combined with Brine Injection in the Excess-Water Hydrate Reservoir".ENTROPY 24.6(2022):16. |
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