Gas Engine

Gas Engine

Gas Powered Well Head Compressor Units

When conventional artificial lift systems cannot be used, it is possible to increase the oil and gas flow by increasing the surface pressure and overcome the back pressure at the wellhead produces by the flow lines.

How It Works

A well head compressor unit is comprised of two basic components:

  • Compressor
  • Separator

The compressor suck the gas directly from the wellhead, even if at very low pressure, and compress it into the flowline at higher pressure.

The heart of the Compression unit is the 6,5l (400 cu) 8 cylinder a ‘V’ engine that used four cylinders for the compressor and the other four as system motor generating 46HP power.

The motor can be self-sustained by the well produced gas.

The separator separates the dragged fluids (up to 50bpd), the fluids will be automatic discharged into a drain tank or re-injected into the line downstream of the compressor The gas can even be sent into a scrubber for treatment and used for engine power supply and pneumatic system.


The full skid dimension is 1.8 m x 3.7 m with a weight of di 2.7 ton due to this is easy to carry and can be installed even in small area.

  • Engine size: 6,5l (400 cu)
  • Engine power: 230 CID, 46 HP (First bank)
  • Engine compression: 170 CID (Second bank)
  • Compress ration: 20:1 with a single stage
  • Suction Pressure: from 16” Hg vacuum to 60 PSIG (4bar)
  • Discharge Pressure: from 50 to 450 PSIG (30 bar)
  • Natural Gas throughput: up to 750 mcf/Day (20,000 m3/day) Dependant on suction and discharge pressure
  • Blow case separator capacity: Standard 36 Bbl/Day (6 m3/day) – 1.5 Bbl/Hr slugging up to 1 Bbl
  • Gravity Feed Vessel (Optional ): increases liquid handling to +/- 6 BPH
  • Fuel gas consumption: 7-10 mcfd (depending on compressor load)
  • Inlet pressure when empty: 12” Hg at 0.2 bar
  • Outlet pressure: up to 32 bar
  • Max flow rate: 24000 mc/g
  • Compress gas cooler system: yes

Suction and disc pressure curves:

Main Benefits

  • Increasing Production from Oil and Gas Wells
  • Improved Cash Flow from existing wells
  • Minimal expense. Non-invasive
  • Easy to operate, easy to maintain
  • Outstanding Safety Record
  • Low emissions, efficient fuel gas usage (less burned gas, then fewer emissions)
  • Quiet operation < 65 dBA @ 100 meters for “open” , < 42dBA @ 100 meters for “enclosed”
  • Small physical footprint
  • Gravity Feed Vessel (Optional ): increases liquid handling to +/- 6 BPH