Consider a well in a large, homogenous and isotropic reservoir. The well produced 100STB/D for 3 days,
Question:
Consider a well in a large, homogenous and isotropic reservoir. The well produced 100STB/D for 3 days, and was shut in for the next 1 day, produced 150 STB/D for the next 2 days, produced 50 STB/D for the next 1 day, and produced 200 STB/D for next 2 days .
a) Calculate and plot bottomhole pressure versus time in the reservoir for 9 days.
b) Calculate and plot pressure profile (pressure vs radius) in the reservoir at the end of 9 days.
B=1 RB/STB
μo=1 cP
h=10 ft
k=25 mD
φ=0.2
Pi=3000 psig
ct = 10*10-6 psi-1
S=0
rw = 1 ft.
Note 1: Please use field units to solve the pressure equations:
P(psia), q (STB/Day), k (mD), h (ft.), φ (fraction), μ (cP), ct (psi-1), r (ft.), t (hours), Bo (RB/STB).
Applied Regression Analysis and Other Multivariable Methods
ISBN: 978-1285051086
5th edition
Authors: David G. Kleinbaum, Lawrence L. Kupper, Azhar Nizam, Eli S. Rosenberg