Abstract：The temperature distribution and flowing characteristics of the dissociated gas and water from hydrate bearing porous sediments were investigated by utilizing a one dimension experimental model setup. With the developed apparatus, the gas hydrate was formed by mixing methane gas with NaCl solution at proper temperature and pressure condition. The experiments were run for the thermal stimulation method by injecting hot water at different temperatures and rates. The experimental results suggest that the gas production rate increases with time until it reaches a maximum and then it begins to decrease. However, the water production rate keeps nearly constant during the whole production process. The calculated energy ratio for all experimental runs is in the range of 0.38~2.59. The injection water temperature and rate as well as the hydrate content in the sediment all influence the energy ratio of thermal stimulation production.
2006, Vol. 6 
