Introducing the non- linearity fractal theory to the seeping mechanics, applying the both parameters( D, θ) describes the fractal characteristics of the oil or gas reservoirs. The fractal dimension D delegates the geometry characteristic of the fractal body. The fractal index θ describes the connect circumstance of fractal network, and relating to the chart dimension d. Establish the unsteady seeping model of real gas of fractal gas reservoir, the solution of the infinite stratum and the gradually near solutions of long or short time are sought by using the Laplace transformation, and applying the numerical simulation method analyzes the well bottom pressure of the typical gas reservoir.
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