The bottom hole pressure in a well has been declining at a constant rate of 1.4 psi/day. The reservoir characteristics are as follows:
A = 160 Acres h= 60 ft rw = 0.33ft
Bo = 1.35 RB/STB µo = 2 cp ct = 24.2x10-6 psi-1
q = 300 STB/D PR = 3,500 psia Pwf = 3,255 psia
(a) What is the porosity?
(b) What is the permeability?
(c) What would the permeability be, if the bottomhole pressure had been constant (steady state flow)?