Page 542 - Standard Handbook Petroleum Natural Gas Engineering VOLUME2

496 Production

4. Find the average pressure:

pltyl=- P1+Pn+p,= 1'455+1'955 +14.7 = 1,719.7psia
2 2
5. Find the average temperature:

6. Find ZaT for gas phase
za- = f(T,,P,)
= 0.72

T, = T/Tpc = 550/394 = 1.4

p, = 1,719.7/660 = 26
7. Find the average specific weight of the gas phase:

1719 7 520 1
= 0.752(0.0764)--- = 8,8231b/fts
14.7 5500.72
8. Find R, at Taw and p, (see Chapter 5)

T, = 90°F, pw = 1,719.7 psia

9. Calculate the average viscosity of the oil from correlations (see Chapter 5)

pod = 10" - 1.0
X = T-1,16sexp(6.9824 - 0.04658 OAPI)

X = 90-1,163exp(6.9824 - 0.04658 x 54) = 0.4646