Kinetic study of fulvic acid on methane hydrate formation and decomposition in clay-rich silty sediments
文献类型：期刊论文
| 作者 | Lv, Tao2,3; Pan, Jie3; Chen, Zhaoyang1,2; Cai, Jing1,2; Li, Xiaosen1,2 ; Zhang, Yu1,2
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| 刊名 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 217页码:12 |
| 关键词 | Methane hydrate Marine sediments Humic substances Fulvic acid Formation and decomposition NaCl |
| ISSN号 | 0920-4105 |
| DOI | 10.1016/j.petrol.2022.110916 |
| 通讯作者 | Lv, Tao(lvtao@xsyu.edu.cn) |
| 英文摘要 | Humic substances and salts are widely distributed in marine sediments, a phenomenon that undoubtedly increases the complexity of recovering methane from hydrate. In this work, kinetic experiments were carried out to determine the role of fulvic acid (FA) on methane hydrate formation and decomposition in marine sediments. We used the mixed clay-rich silty with pore water, containing 3.0 wt% NaCl, to simulate the sediments, with experimental pressure (12.7-14.6 MPa) and temperature (8.6-16.2 degrees C) conditions adopted from the hydrate reservoir of Shenhu area, South China Sea (SHCS). Results revealed that FA has favorable/unfavorable effects on methane hydrate formation in the sediments, in a concentration-dependent manner. FA solutions, at concentrations of 6.0 and 10.0 wt%, inhibited the formation of methane hydrate, because the high-water holding capacity itself could reduce water activity. Conversely, 2.0 wt% FA solution accelerated methane hydrate formation by arranging surrounding water molecules with H-bonds. Interestingly, it was found that the addition of FA could significantly weaken NaCl's inhibitory effect on methane hydrate formation, while water conversion ratios increased similar to 2/3-fold relative to NaCl without FA solution containing systems. These results suggested that presence of FA in marine sediments promoted hydrate reformation during reservoir production. Besides, we found that there is a synergistic effect between FA and NaCl in the process of methane decomposition. |
| WOS关键词 | MOLECULAR-DYNAMICS SIMULATION ; NATURAL-GAS HYDRATE ; DISSOCIATION ; DEPRESSURIZATION ; EQUILIBRIUM ; ENERGY ; WATER ; SAND ; CO2 |
| 资助项目 | Key Laboratory of Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences[E129kf1501] ; National Natural Science Foundation of China[51576202] ; National Natural Science Foundation of China[51736009] ; Guangdong Major project of Basic and Applied Basic Research[2020B0301030003] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000854985000002 |
| 出版者 | ELSEVIER |
| 资助机构 | Key Laboratory of Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Guangdong Major project of Basic and Applied Basic Research |
| 源URL | [http://ir.giec.ac.cn/handle/344007/37206]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Lv, Tao |
| 作者单位 | 1.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 3.Xian Shiyou Univ, Coll Petr Engn, Xian 710065, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lv, Tao,Pan, Jie,Chen, Zhaoyang,et al. Kinetic study of fulvic acid on methane hydrate formation and decomposition in clay-rich silty sediments[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2022,217:12. |
| APA | Lv, Tao,Pan, Jie,Chen, Zhaoyang,Cai, Jing,Li, Xiaosen,&Zhang, Yu.(2022).Kinetic study of fulvic acid on methane hydrate formation and decomposition in clay-rich silty sediments.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,217,12. |
| MLA | Lv, Tao,et al."Kinetic study of fulvic acid on methane hydrate formation and decomposition in clay-rich silty sediments".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 217(2022):12. |
入库方式： OAI收割
来源：广州能源研究所
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