An interior well is producing from a reservoir, developed on a 40-acre square pattern which has the following properties:
k = 150 md h = 20 ft
f = 15% rw = 0.33 ft
µ = 1.1 cp q = 500 STB/D
B = 1.35 RB/STB ct = 24.2 x10-6 psi-1
Pi = 4,000 psia A = 40 acres
Assuming this well has been producing at constant rate for a sufficiently long time to achieve pseudo-steady state flow, compute the flowing formation face pressure at the following times: 20, 50, 100, 150, 200, and 250 hours and plot the results. Based on this plot, what do you conclude about the behavior of the flowing bottomhole pressure of a well during pseudo-steady state flow?