A horizontal pipe 10cm in diameter (1.D.) and 3000cm long is filled with a sand of' 20% porosity. It has a connate water saturation of 30% and, at that water saturation, a permeability of oil of 200 md. The viscosity of the oil is 0.65 cp and the water is immobile.

(h) What is thc rate of advance of the flood front"

(i) How long will it takc to obtain all the recoverable oil, and how much will bcrecovered"

(j) How much pressure drop wil be required to produce oil at the rate of 0 055cu cm/sec when the water flood front is at the midpoint of the pipe?