Page 147 - Air and gas Drilling Field Guide 3rd Edition

138 CHAPTER 5 Compressors and Nitrogen Generators

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350 psig (241 N/cm gauge) at API Mechanical Equipment Standards. The after-
cooling and innercooling subsystems are at the right end of the skid in Figure 5-21.
The prime mover is in the middle of the skid, and the compressor is mounted at
the left end (or aft end) of the skid. The prime mover is a diesel-fueled, turbo-
charged Caterpillar Model ACERT C15 with an in-line 6-cylinder configuration.
This prime mover produces a peak of 540 hp (403 kW) at a speed of 1800 rpm
at API Mechanical Equipment Standards.
Figure 5-22 shows a skid-mounted, low pressure booster compressor system
unit that has a Joy Model WB-12, single- or two-stage, double-acting, reciprocating
piston compressor. The primer mover is a Detroit Model 12V71T DDEC diesel
fueled and turbocharged. The prime mover is rated at 585 hp (436 kW)at
2100 rpm. On the right end of the skid is the aftercooler, at the left end of the
skid is the prime mover, and in the center is the Joy compressor.
Operating in a single-stage mode, the booster is capable of an equivalent input
volumetric flow rate of 3000 scfm (1416 standard liters/sec)(at a minimum input
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pressure of 165 psig, or 114 N/cm gauge) and increasing the flow pressure to
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650 psig (448 N/cm gauge). Operating in a two-stage mode, the booster is capa-
ble of an input volumetric flow rate of 2150 scfm (1014 standard liters/sec)
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(at a minimum input pressure of 165 psig, or 114 N/cm gauge) and increasing
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flow pressure to 1400 psig (966 N/cm gauge).
Figure 5-23 shows a skid-mounted, high pressure booster compressor system
unit that has a Joy Model WB-11, single-stage, double-acting, reciprocating piston
compressor. The primer mover is a Caterpillar Model 3306 diesel fueled and tur-
bocharged. The prime mover is rated at 225 hp (155 KW) at 1800 rpm. On the
left end of the skid is the aftercooler, at the right end of the skid is the prime
mover, and in the center is the Joy compressor.

FIGURE 5-22. Skid-mounted, reciprocating piston low pressure booster compressor system
unit (courtesy of Weatherford International).