THE EQUATIONS FOR ESTIMATING OIL PRODUCTION BEFORE, AT AND AFTER BREAKTHROUGH FROM A RESERVOIR PRODUCED BY FLUID INJECTION

Estimation of oil production from a reservoir being produced by fluid injection was presented. Equations were propounded for estimating oil production before and at breakthrough from a reservoir being produced by fluid injection. The propounded equations are based on the rules of expressing viscosities and energy in terms of pressure and volume. The applicability of the equations was based on certain assumptions which were listed in the Theory. One of the Oil Production Equations was actually applied to compute the volume of oil producible from Reservoir AGU-2, located South-East Nigeria, before breakthrough. A Microsoft visual basic program was also developed based on the Oil Production Equation that can estimate oil recovery before breakthrough during a fluid injection process.