The hydraulic fracturing are widely used in oil field as a good means of the exploit of low permeability oilgas reservoir and the output increase of oil field. To make the hydraulic fracturing scheme economic, reasonable, and improved, a numerical solution is given to the mathematic model of predicting the hydraulic fracturing oil's output on condition of constant wellbored Pressure production of oil-gas reservoir. The various conditions and elements needed to be considered for the model are described. It provides an overview on the numerical solution of nonlinear parabolic oil-gas reservoir equations with the fracture in the area and the coefficient depending on the unknown function.

In this paper, the solution of magnetization intensity J(α,β)on imaginary magnetic dipole layer was obtained by the represantation of dipole layer field density component which was regarded as the first kind Fredholm intergral equation and the potential data on the rectangle grid point was computed by the solution J(α,β)which was taken into the represantation. It realizes gridding the scattered potential data which keep the physical character of potential data.