This paper analyzes the unsteady-state flow of a slightly compressible fluid into a slanted well and gives an equation for calculating the partial penetration and slanting of a well.

In this paper, a non-linear model for two dimension and two phases unsteady state flow through a porous medium is solved by a variational finite element method.

This paper considers the unsteady state flow behavior in a composite reservoir with an impermeable subregion by using Boundary Element Method (BEM).