An oil well is producing from a cylindrical reservoir with a drainage area of 20 acres. Calculate the well pressure, given the following data:
rw = 6 in, ? = 5 cp,
k = 75 mD, h = 10 ft,
pe = 5000 psia, q = 175 BOPD,
BOPD is short for "Barrel of Oil Produced per Day".
Calculate the pressure in the reservoir at a distance 5 ft from the well. What is the pressure drop from the well to this position, in percentage of the total pressure difference in the reservoir.