Initiation and expansion of layered fracture in sediments due to thermal-induced hydrate dissociation
文献类型：期刊论文
| 作者 | Zhang XH(张旭辉) ; Lu XB(鲁晓兵)
|
| 刊名 | Journal of Petroleum Science and Engineering
 |
| 出版日期 | 2015-09 |
| 卷号 | 133页码:881-888 |
| 通讯作者邮箱 | zhangxuhui@imech.ac.cn ; xblu@imech.ac.cn |
| 关键词 | hydrate-bearing sediment hydrate dissociation excess pore gas pressure dissociation zone layered fracture |
| ISSN号 | 0920-4105 |
| 产权排序 | [Zhang, X. H.; Lu, X. B.] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Res Ctr Gas Hydrate & Soil Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Zhang, XH (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Res Ctr Gas Hydrate & Soil Mech, Beijing 100190, Peoples R China. |
| 中文摘要 | Methane hydrate dissociation in sediment may lead to geological hazards such as marine landslide, collapse of wellbore. The physical mechanisms, especially on the evolution of sediment damage, are not very clear sediment though some numerical simulations were presented based on conventional landslide. A failure form, namely layered fracture in sediment, was observed in experiments during hydrate dissociation, It was a gap tilled with gas and water formed from continuous sediment by the gas and water expansion. A large laterally distributed layered fracture in seabed is a potential mechanism for marine landslide formation due to the very small shear strength in the fracture. This issue was analyzed based on dimensionless method and a two-phase mathematical model. The extension of the method and results to relate the engineering problem were discussed also. A mathematical model for studying the initiation and expansion of layered fracture was presented first by decoupling the expansion of hydrate dissociation front, gas seepage, and the movement of soil layer. Then the critical condition for the initiation of layered fracture was obtained and the thickness expansion of the layered fracture was numerically analyzed. The results could be used to evaluate the development of layered fractures under the condition of different hydrate recovery methods and geo-mechanical properties of hydrate formations in the future and will be extended to the study on the mechanism of marine landslide. (C) 2015 Elsevier B.V. All rights reserved, |
| 分类号 | 一类 |
| 类目[WOS] | Energy & Fuels ; Engineering, Petroleum |
| 研究领域[WOS] | Energy & Fuels ; Engineering |
| 关键词[WOS] | GAS-HYDRATE ; BEARING SEDIMENTS ; STRENGTH ; BEHAVIOR ; SLOPE |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.petrol.2015.03.024 |
| 语种 | 英语 |
| WOS记录号 | WOS:000365253300084 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/58321]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 推荐引用方式 GB/T 7714 | Zhang XH,Lu XB. Initiation and expansion of layered fracture in sediments due to thermal-induced hydrate dissociation[J]. Journal of Petroleum Science and Engineering,2015,133:881-888. |
| APA | 张旭辉,&鲁晓兵.(2015).Initiation and expansion of layered fracture in sediments due to thermal-induced hydrate dissociation.Journal of Petroleum Science and Engineering,133,881-888. |
| MLA | 张旭辉,et al."Initiation and expansion of layered fracture in sediments due to thermal-induced hydrate dissociation".Journal of Petroleum Science and Engineering 133(2015):881-888. |
入库方式： OAI收割
来源：力学研究所
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