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| Seepage characteristics of natural gas hydrate and its description |
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CHEN Yue-ming,ZHANG Xin-jun, DU Qing-jun
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(College of Petroleum Engineering in China University of Petroleum, Dongying 257061，Shandong Province, China )
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| Abstract: |
| The natural gas hydrate seepage is a physical and chemical seepage process of multiphase and multicomponent in non-isothemial condition，which includes phase transformation，energy transformation and physical property change of reservoir. The defining methods of parameters of porosity, permeability and saturation in natural gas hydrate reservoir were presented. The process of natural gas hydrate seepage was described based on the theory of seepage fluid mechanics and exploration model. Physical model and basic mathematical model were built based, on fluid mechanics theory in reservoir, and the present problems existing in the study of natural gas hydraie seepage were discussed? which provides theoretical foundation for further physical simulation and numerical calculation of natural gas hydrate reservoir. |
| Key words: natural gas hydrate seepage characteristics physical model mathematiuul model |
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