Abstract:

The theory of the fluid flowing at the deformed porous media gas reservoir is developing with the one of fluid flowing through porous media, and the production of deformation media gas reservoir is the one of fluid-solid coupling. In the early time, the main intention was to study the relation among pressure, porosity and permeability of reservoir. After the effective stress was introduced, the fluid flow model about liner elastic deformation was established, later, the fluid-solid coupling model about nonlinear elastic or plastic deformation. Now, the coupling model have been established considering the relation about fluid flow, stress and temperature. In China, the study of theory started very late and was based on the foreign theory . After 1990s, many scholars have begun to study the theory and gained many good results. And these results are very important to develop the gas reservoir in China at present. Certainly, the theory needs to be perfected continuously and be made a theory system for production.

Key words: deformed media, gas reservoir, fluid flow mechanics, fluid-solid coupling