Page 247 - Air and Gas Drilling Manual
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Chapter 5: Shallow Well Drilling Applications 5-89
81 2 .
PR =
100)
(
= 11 3 .
722 0 .
Figure 4-17 does not give data for power ratios less than 50 percent so a diesel fuel
consumption rate 0.700 lb/hp-hr will be assumed for power levels below 40 percent.
The total weight rate of diesel fuel consumption per hour is
˙ w = . 0 700 ( . ) =81 2 56 .9 lb/hr
f
Figure 5-19: Drill string injection pressure (same as compressor output pressure) for
Illustrative Example 5.5c.
The diesel fuel consumption rate (in United States gallons) for the drilling depth of
2,400 ft is
