Page 26 - Standard Handbook Petroleum Natural Gas Engineering VOLUME2
P. 26
14 Reservoir Engineering
1.14
2 .o
1.12
1.10
I .8 1.01
f
1.a
1.6 1.04
1.-
1.00
I .4 0 zaa4Ca
TEMP. *F
Presaure correctlan factor lfl
tor woter m. temp.rotue.*E
I .2 Presumed oppllcable to brines
but not confirmed erWrlrnentally.
Viscosity at elevated pressure:
I .o PP.T “P*T) fp.T1
0.8
0.6
0.4
0.2
0
40 80 120 160 200 240 280 320 360 400
TEMPERATURE, “F
Figure 5-12. Water viscosities for various salinities and temperatures [13].
For conventional field units, p is in psia, V is in ft3, T is in OR (OF + 460), z is
dimensionless, n is in lb moles, and R is 10.73 psia ft3/lb mole OR [14]. The
gas formation volume factor, Bg, is the volume of gas in the reservoir occupied
by a standard fts of gas at the surface:
v ft3 - znR( T, + 460)
B= - (5-2)
5.615fts/bbl 5.615
where T, is the reservoir temperature in OF.
