Compressor Station Upgrade 2004 Print E-mail

SCFM DELIVERS RESULTS

OUTCOME:

•  Increased flow rate by 250%+ 
•  Reduced HP
•  Reduced maintenance cost by 15%  

The Customer Situation:
Customer compression station not performing as needed
•   The station was used for gas transmission though a pipeline•   The station consisted of 4 - 1085 hp engines driving two throw reciprocating compressors with engine drive coolers.

•   Customer initially wanted a new station and mothball the original

Challenges:
•    Station had high vibration and pulsation problems
•    Over horsepower at high suction high discharge pressures
•    Cooler outlet temperatures too high
•    Design point had changed from 220 suction/700 discharge to 400 suction/625 discharge.  (Range of pressure is now 170-490 suction to 500-684 discharge) 
•    Needed minimal downtime to the station  

The SCFM Solution:
Upgrade of existing station was the better option to meet customer’s project objectives 
•   Standard reciprocating compressor cylinders were replaced with pipeline cylinders.  (Rationale: to reduce hp, reduce cooler outlet temperature and increase flow rate.)
•   Scrubbers, bottles, cooler section and piping    
    °  Prefabricated to minimize station downtime and lower costs
 
    °  Redesigned to increase throughput, lower vibrations, pulsations and pressure drop 
•  New bottles made for the first unit.  Old bottles modified for the next unit to be revamped.  (Rationale: saved time and money.)
•  Used local labor for final welds and site installation.  Labor familiar with the station and the customer.  (Rationale: reduce delivery time.)

The Results: 
•   Flow rate increased from 15 MMSCFD to 40 MMSCFD
•   HP was lowered within the capabilities of the current engine limit
•   Upgrade to all four compression units was completed in 3 months (minimal station down time)
•   Project cost was reduced
•   Production and efficiency was increased