Used to control the temperature of the flow stream, coolers are forced draft ambient air heat exchangers and are available with gas engines or electric motors.

Exterran Process Coolers are heat exchangers used to reduce gas and liquid wellstream temperatures to allow further processing and meet pipeline specifications. Three cooler types are available: natural gas engine drive, electric motor drive and ambient. Gas engine units are delivered complete with fuel gas filter, regulators, control panel and inlet and outlet piping to skid edge for fast installation and startup. In-stock Exterran Process Coolers have throughput capacities up to 30 MMscfd with minimal pressure drop and pressure ratings up to 1,440 psig.

Key Benefits


  • Concrete-filled skid dampens vibration to help prevent piping damage and system leaks
  • Stainless steel tubes extend equipment life
  • Ability to achieve temperatures within 15°F of ambient
  • Automated louvers for optimal temperature control


  • Flexibility to have electric motor drive with or without power generation
  • Removable plugs on tube ends allow easy service and cleanout
  • Large inventory of pre-assembled units allows fast delivery, installation and startup


  • Environmental containment skid with ASME code blowcase under engine
  • Added assurance of a warranty on our manufactured products that runs 12 months from startup or 18 months from delivery, whichever comes first
  • Prompt, professional service, support and spare parts from local technicians in or near every major oil & gas producing region in the U.S. and numerous areas around the world

How it Works

The wellstream enters the cooler and flows through the tubes, which lowers the temperature of the stream. The fan blows air across the tubes to allow continuous cooling. The louvers automatically adjust the airflow to maintain the outlet gas temperature, allowing optimized airflow through the system. The exiting stream can be cooled to within 15°F of ambient temperature.

Standard Features & Options

Standard Features

  • ANSI 900 RF inlet and outlet flanges at skid level
  • Temperature controlled automatic louvers
  • Pre-piped and assembled package
  • Concrete-filled oilfield type skid allows for tailboarding
  • Fuel gas assembly with ASME code sock filter
  • Containment blowcase tank
  • Enclosed control panel
  • Natural gas driven engine
  • ASME code cooler headers
  • Battery in locking case for engine starter, with alternator
  • High quality enamel paint system
  • Tool box


  • Electric drive motor
  • External power generation
  • Alternate cooler and fan size
  • Corrosion allowance
  • Optional materials for coils
  • Engine lube oil storage tank
  • Catalytic converter and silencer for control of emissions
  • Optional coatings
  • Sour gas service designed and built to NACE standards
  • Customization to meet additional specifications