Similar Structure of Solution for the Model of Nonlinear Seepage in Multilayer Composite Reservoir

Jie Shen, Qiang Wang, Shunchu Li


Aimed at the multilayer composite reservoir, the model of nonlinear seepage is established in different outer boundary (infinity, closed, constant pressure) conditions. Through linearization and Laplace transform of the model, boundary value problem of the nonlinear seepage model is transformed into the boundary value problem of ordinary differential equation, and then constructing similar kernel function, similar structure of solution of reservoir pressure in the Laplace space is obtained in different outer boundary conditions for linearized model, this research provides a theoretical basis for well test analysis.


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