Page 530 - Standard Handbook Petroleum Natural Gas Engineering VOLUME2

Flow of Fluids 485

2. Gas specific weight at std conditions 7,
r,, = 0.0763~~ 0.0763(0.75)
=
= 0.05723 lb/ftg
3. Pipe flow area

A, = (n/4)D4 ~/4(9/12)~ 0.4418 ft*
=
4. Calculate Z, pg p,, and GOR at P, and Twg. From Gas P-V-T Program
(see Chapter 5) at p = 2,000 psia
T = 80°F

Z = 0.685
pg = 0.0185 cp

From Oil P-V-T program at p = 2,000 psia
T = 80°F

R, = 990 scf,/bbl
po = 2.96 cp

5. Calculate yg at p4 Tq and Zq

6. Calculate vapor superficial velocity, vsg from Equation 6-65

spgu - - (40 '0' )o.05724 = 5.48 ft/s
v.g =
A,p,(24)3,600 0.4418~10.95~24~3,600
'7. Calculate liquid superficial velocity va

v/!L= 40,000( 42) = 5.88
A, ('7.481)24(3,600)0.4418

8. Reynolds number and friction factor based on the superficial velocity,
from Equation 6-673
a) Liquid