首页 > 地调专题 > 局其他活动 > 第八届国际天然气水合物大会 > T3能源：勘探-生产-新技术
OS5C-6：THREE-DIMENSIONAL EXPERIMENTAL INVESTIGATION OF HEAT TRANSFER DURING HYDRATE DISSOCIATION IN PILOT-SCALE HYDRATE SIMULATOR
发布时间:2014-07-28
Yi WANG1, Xiao-Sen LI1,*, Gang LI1, Jing-Chun FENG1,2 Qing-Ping LI3, Zhao-Yang CHEN, Yu ZHANG
1. Centre for Gas Hydrate Research, Guangzhou Institute of Energy Conversion, CAS, CHINA; 2. University of Chinese Academy of Sciences, CHINA; 3. CNOOC Research Center, CHINA
The Pilot-Scale Hydrate Simulator (PHS), a three-dimensional 117.8 L pressure vessel, is used for investigating the gas production behaviors from hydrate reservoir. The characteristics of heat transfer during the hydrate dissociation in porous media using the depressurization and the thermal stimulation methods are studied in this work. The results indicate that the heat transfer models for depressurization and thermal stimulation are different. Therefore, the characteristics of hydrate dissociation using these methods are different. In the thermal stimulation method, the rate of heat loss on the boundary, the heat consumed rate by hydrate dissociation, and the heat transfer rate in porous media are calculated. In the depressurization method, the sensible heat in porous media is consumed for hydrate dissociation firstly, and then the heat transfer from the boundaries to dissociate hydrate. The rate of sensible heat consumed and the rate of heat transfer are calculated. In addition, the effect of boundary conditions on the heat transfer is also performed. By investigating the different heat transfer model, this study presents schemes to enhance the hydrate dissociation rate and recovery rate, further to improve the economical value for hydrate exploitation.
1. Centre for Gas Hydrate Research, Guangzhou Institute of Energy Conversion, CAS, CHINA; 2. University of Chinese Academy of Sciences, CHINA; 3. CNOOC Research Center, CHINA
The Pilot-Scale Hydrate Simulator (PHS), a three-dimensional 117.8 L pressure vessel, is used for investigating the gas production behaviors from hydrate reservoir. The characteristics of heat transfer during the hydrate dissociation in porous media using the depressurization and the thermal stimulation methods are studied in this work. The results indicate that the heat transfer models for depressurization and thermal stimulation are different. Therefore, the characteristics of hydrate dissociation using these methods are different. In the thermal stimulation method, the rate of heat loss on the boundary, the heat consumed rate by hydrate dissociation, and the heat transfer rate in porous media are calculated. In the depressurization method, the sensible heat in porous media is consumed for hydrate dissociation firstly, and then the heat transfer from the boundaries to dissociate hydrate. The rate of sensible heat consumed and the rate of heat transfer are calculated. In addition, the effect of boundary conditions on the heat transfer is also performed. By investigating the different heat transfer model, this study presents schemes to enhance the hydrate dissociation rate and recovery rate, further to improve the economical value for hydrate exploitation.
京公网安备 11010202007433号