The data given in the attached table refers to a constant rate drawdown

test on an oil well.

Question: Determine the formation permeability, skin factor and pressure

drop caused by skin using semilog analysis.

Reservoir Data:

P = 6500 psia

h = 120 ft

Bo = 1.25

9,-9500 STB/D

p = 0.20

Ho=1.2 mPa.s

c=2.0*10-5 psi 1

r=0.3 ft