The study of single and two-phase flow of fluid through vertical pipes; Preliminary assesment of reservoir performance using the semi steady state inflow equation; Mathematical theories of flow through the fracture : an assessment; Development of an oil field computer aided; Numerical reservoir simulation two-phase (oil-water), two dimensional flow in a volumetric reservoir; The effect of reservoir gas on drilling mud properties; Simulation of two phase flow solution gas drive reservoir solve using point successive over-relaxation method