Page 618 - Air and Gas Drilling Manual

11-56 Air and Gas Drilling Manual
f
ianp 0 458 1 0 392 2
.
.
.
2 log 114
.
0 00015
.
f ianp 0 024
Equations 6-67 and 6-68 become, respectively,
.
10
a ianp
53 36
.
a 0 019
.
ianp
and
2 2
.
2 635)
0 024 53 36 (.
.
b ian p 2
(
.
2 32 2) ( 0 458 0 392) 10 2 2 2
.
.
.
0 392)
(. (.
0 458)
4
b 56 130
,
ianp
Equation 6-72 becomes
. 05
2 (. 0 019 ) ( . 1 250 )
2 2
(,540 ) (56 .130 ) (604 41 e 604 .41 1
31
. )
P
ianp
2 (. 0 019 ) ( . 1 250 )
e 604 .41
2
,
P 31 560 lb/ft abs
ian p
P ian p
p ian p
144
.
p ian p 219 2 psia
Turbine Motor Performance
The downhole pneumatic turbine motor Model 650 has a single stage axial flow
turbine device. There are 23 stator gas flow orifices around the periphery of the