Page 576 - Air and Gas Drilling Manual

11-14 Air and Gas Drilling Manual
With the above, Equation 6-73 becomes
1 2
f
iop 0 0938
.
2 log 114
.
0 00015
.
.
f iop 0 022
Equations 6-67 and 6-68 become, respectively,
.
10
a
iop
53 36
.
.
a iop 0 019
and
2
2
(.
2 635)
2
.
.
0 022 53 36 3
b iop
232 2 . ) 10 . 2 5
(
(.
0 0938)
4
b iop 673 900
,
Equation 6-72 becomes
. 05
2 (. 0 019 ) (. 0 250 )
,
(,448 ) 2 (673 900 ) (604 41 2 e 604 .41 1
. )
29
P
iop 2 (. 0 019 ) (. 0 250 )
e 604 .41
2
P iop 29 520 lb/ft abs
,
P iop
p iop
144
.
p 205 0 psia
iop