Off-Shore Gas Lift Compressor

Minor branches failure
Vibrations reduced below the swri danger value no failures occurred after modifications
Country:
Mediterranean Sea
Application:
Floating production storage and offloading (FPSO)
Compressor type:
Reciprocating compressor – 3 stage
Service
Gas lift compressor
Power:
1050 kW
Pressure:
120 bar
Off-Shore Gas Lift Compressor
Problem

Sudden welding ruptures on minor branches

  • high vibrations since the first start-up
  • skid design failed to consider alternating forces
  • poor support design
Solution

Acoustical study revealed the need for:

  • restriction orifices
  • new support installation