Numerical analysis of methane hydrate decomposition experiments by depressurization around freezing point in porous media
文献类型：期刊论文
| 作者 | Li, Bo1,2; Liang, Yun-Pei1,2; Li, Xiao-Sen3; Wu, Hui-Jie3 |
| 刊名 | fuel
 |
| 出版日期 | 2015-11-01 |
| 卷号 | 159页码:925-934 |
| 关键词 | Gas hydrate Porous media Depressurization Numerical simulation Freezing point |
| 英文摘要 | the depressurization-induced decomposition behaviors of methane hydrate around the freezing point in porous media are investigated in this numerical study. a total of three cases have been simulated in a cylindrical reactor using a central vertical well with the production pressure p-w = 2.20, 2.60, and 3.00 mpa, respectively. the simulation results of the pressure and temperature profiles and gas production processes are then compared with the corresponding experimental data. both the experimental and numerical results indicate the existence of a "freezing stage'' in the case of p-w = 2.20 mpa (case 1). four phases of gas, liquid, ice, and hydrate are observed to coexist in the reactor in this freezing stage. comparing with other two cases, the hydrate dissociation in case 1 is promoted by three kinds of heat: the reservoir sensible heat q(s), the conducted heat from the boundaries q(b), and the latent heat from ice transition q(i). it is found that the q(s) and q(i) play an important role in promoting the fastest hydrate dissociation in the early depressurization stage of case 1. in addition, the ice phase is found to be formed in the central area of the hydrate deposit and in the vicinity of the production well. although the formed ice may cause flow blockage for the gas and water, the released latent heat is still attractive for the fast hydrate dissociation under depressurization around the freezing point. (c) 2015 elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | energy & fuels ; engineering, chemical |
| 研究领域[WOS] | energy & fuels ; engineering |
| 关键词[WOS] | qilian mountain permafrost ; ethylene-glycol injection ; gas-production ; natural-gas ; thermal-stimulation ; quiescent reactor ; horizontal wells ; dissociation ; sediment ; deposits |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000360006100103 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/10853]  |
| 专题 | 中国科学院广州能源研究所 |
| 作者单位 | 1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 2.Chongqing Univ, Coll Resources & Environm Sci, Chongqing 400044, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Bo,Liang, Yun-Pei,Li, Xiao-Sen,et al. Numerical analysis of methane hydrate decomposition experiments by depressurization around freezing point in porous media[J]. fuel,2015,159:925-934. |
| APA | Li, Bo,Liang, Yun-Pei,Li, Xiao-Sen,&Wu, Hui-Jie.(2015).Numerical analysis of methane hydrate decomposition experiments by depressurization around freezing point in porous media.fuel,159,925-934. |
| MLA | Li, Bo,et al."Numerical analysis of methane hydrate decomposition experiments by depressurization around freezing point in porous media".fuel 159(2015):925-934. |
入库方式： OAI收割
来源：广州能源研究所
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