Abstract

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Use of numerical methods has been a popular tool for engineers especially with the advent of faster computers. This study uses the finite element method to solve the non-Darcy flow problem with a new boundary condition involving step functions.
The problem of non-Darcy skin reconsidered in terms of a distinct skin value during production and decreasing to a smaller value during well shut-in. The boundary condition is formulated and solution is performed using commercial finite element and finite difference solvers/simulators. We show that the current prevalent model of using non-Darcy coefficient to model this changing skin behavior is adequate for engineering purposes.