Tarek Ahmed Translation – Chapter 3
Example. PVT properties of a gas sample taken from a dry gas reservoir
Calculate the ratio of gas flow under the following conditions:
(a) Calculation of Qg = 4000 pr = 3200 psi and PWF:
Step 2. Calculate the average pressure and determine the corresponding properties of gas.
Step 3. Qg recalculated using the equation pseudopressure Equation 3.1, to:
(b) calculation of Qg to pr = 2000 and PWF = 1200:
Step 1. Select the appropriate method of approach.
Since pr and PWF <= 2000, use the square root-pressure approach. Step 2. Calculate the average pressure and the corresponding ug and Z: