Modeling of gas production from hydrates in porous media ...

• Main Author: Hong, Huifang
• Format: Master Thesis
• Language: English
• Published: University of Calgary 2003
• Subjects: Methane hydrate; permafrost
• Online Access: https://dx.doi.org/10.11575/prism/21961; https://prism.ucalgary.ca/handle/1880/39982

Bibliography: p. 194-204 ... : Gas hydrates are considered to be an alternative energy resource of the future, as they exist in enormous quantities in permafrost and offshore environments. However, due to the severe environmental conditions of gas hydrate reservoirs and their solid nonflowing form, extensive technological development and expertise are required before commercial gas production becomes possible. In this work, both analytical and numerical mathematical models are developed to perform simulation studies of gas production from methane-hydrate by the depressurization method. The three primary mechanisms involved in hydrate decomposition in porous media are considered to be the heat transfer to the decomposing zone, the kinetics of hydrate decomposition and the gas-water two-phase flow. The relative importance of these mechanisms is compared over a realistic range of physical properties. Considering the rate-controlling mechanisms, a new analytical model is developed to predict the performance of hydrate decomposition in porous ...