| Numerical Study on Dissociation of Gas Hydrate and Its Sensitivity to Physical Parameters |
| |
| 引用本文： | 白玉湖,李清平,喻西崇,冯国智. Numerical Study on Dissociation of Gas Hydrate and Its Sensitivity to Physical Parameters[J]. 中国海洋工程, 2007, 21(4): 625-636 |
| |
| 作者姓名： | 白玉湖 李清平 喻西崇 冯国智 |
| |
| 作者单位： | Technology Research Dept. China National Offshore Oil Corp，Research Center，Technology Research Dept.，China National Offshore Oil Corp，Research Center，Technology Research Dept.，China National Offshore Oil Corp，Research Center，Technology Research Dept.，China National Offshore Oil Corp，Research Center，Beijing 100027，China，Beijing 100027，China，Beijing 100027，China，Beijing 100027，China |
| |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| |
| 摘 要： | The natural gas hydrate resource is tremendous.How to utilize the gas from hydrates safely is researchers' concern.In this paper,a one-dimensional model is developed to simulate the hydrate dissociation by depressurization in hydrate-bearing porous medium.This model can be used to explain the effects of the flow of multiphase fluids,the endothermic process of hydrate dissociation,the variation of permeability,the convection and conduction on the hydrate dissociation.Numerical results show that the hydrate dissociation can be divided into three stages:a rapid dissociation stage mainly governed by hydrate dissociation kinetics after an initially slow dissociation stage governed mainly by flow,and finally a slow dissociation stage.Moreover,a numerical approach of sensitivity analysis of physical parameters is proposed,with which the quantitative effect of all the parameters on hydrate dissociation can be evaluated conveniently.
|
| 关 键 词： | 模拟技术 波浪 天然气 氧化物 |
Numerical Study on Dissociation of Gas Hydrate and Its Sensitivity to Physical Parameters |
| |
| BAI Yu-hu,LI Qing-ping,YU Xi-chong,FENG Guo-zhi. Numerical Study on Dissociation of Gas Hydrate and Its Sensitivity to Physical Parameters[J]. China Ocean Engineering, 2007, 21(4): 625-636 |
| |
| Authors: | BAI Yu-hu LI Qing-ping YU Xi-chong FENG Guo-zhi |
| |
| Affiliation: | Technology Research Dept. , China National Offshore Oil Corp, Research Center, Beijing 100027, China |
| |
| Abstract: | The natural gas hydrate resource is tremendous.How to utilize the gas from hydrates safely is researchers' concern.In this paper,a one-dimensional model is developed to simulate the hydrate dissociation by depressurization in hydrate-bearing porous medium.This model can be used to explain the effects of the flow of multiphase fluids,the endothermic process of hydrate dissociation,the variation of permeability,the convection and conduction on the hydrate dissociation.Numerical results show that the hydrate dissociation can be divided into three stages:a rapid dissociation stage mainly governed by hydrate dissociation kinetics after an initially slow dissociation stage governed mainly by flow,and finally a slow dissociation stage.Moreover,a numerical approach of sensitivity analysis of physical parameters is proposed,with which the quantitative effect of all the parameters on hydrate dissociation can be evaluated conveniently. |
| |
| Keywords: | gas hydrate depressurization mathematical modeling sensitivity analysis hydrate dissociation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
