Nonlinear Flow Analysis Of Fractal Composite Reservoir Based On The Similar Structure

This paper studies the solution of the similar structure in fractal composite reservoir nonlinear flow, and mainly describes from the following four chapters: chapter one outlines domestic and international research situation on fractal composite reservoir and development trend, and introduces the basic concepts of fractal theory; the second chapter gives some basic assumptions of fractal composite reservoir nonlinear flow and establishes considering the impact of the second gradient, non-linear differential equations which was based on fractal theory. The third and the four chapters are the focus in this paper. They have respectively summarize that not considering and considering well-bore storage and effective diameter of the fractal composite reservoir in the (infinite, constant pressure, closed) outside the boundary conditions of three non-linear flow model, and be linearization, and use Laplace transform method, in Laplace space obtain the three outer boundary conditions dimensionless reservoir pressure and bottom-hole pressure of exact solutions. Last, concludes the solutions similar structure of the reservoir model in Laplace space. The paper systematically reveals the fractal composite reservoir linear flow reservoir of pressure dynamic distribution and obtains main conclusions—the solutions structure similar. The reservoir in the actual preparation for such well-test analysis software provides a great convenience and it is also a promoting on automated analysis of the percolation.