Gas compressor unit JG

pistonstationarypositive pressure

Overview
These medium-sized, driver-rated, separable reciprocating compressors Ariel JG and JGA are designed for field gas gathering and are also effective for fuel‑gas boost (co‑gen), underbalanced drilling (UBD) and CNG. They are commonly paired with electric motor drives or natural gas engines. Regular, minimal maintenance ensures long continuous, trouble‑free operation.

Applications

• Field gas gathering
• Fuel‑gas boost / co‑generation
• Gas lift and underbalanced drilling (UBD)
• Compressed natural gas (CNG) applications

Key features

• Frame: cast‑iron base with removable lightweight aluminum top cover for service access
• Oil filtration: screw‑on, high‑efficiency filters (5 µm nominal / 17 µm absolute)
• Pistons and rods: gray‑iron or wear‑resistant steel pistons; precision‑machined alloy steel piston rods with crosshead nut locking; rolled threads sized 1/4 in below rod diameter for easier installation
• Versatile cylinders: designed for wide pressure ranges and combinable into many configurations to deliver required flow and pressure

Materials

• Frame: gray cast iron; crankshaft: forged steel; crosshead guide: gray cast iron; trimetal main bearings
• Crosshead: ductile iron; crosshead pin: alloy steel
• Connecting rod: forged steel; bronze pin bushing; trimetal rod bearings; grade‑8 tension bolts

Technical specifications (typical)

• Typical applications: gas gathering, fuel‑gas boost, gas lift, UBD, CNG
• Frame configurations: 2‑, 4‑ and 6‑throw
• Power range by configuration: 252 to 840 HP (188 to 626 kW)
• Available strokes: 3.5 in and 3.0 in (model dependent)
• Maximum speed: up to 1,800 rpm
• Maximum piston speed: up to 900 ft/min
• Standard rod diameter: 1.125 in (29 mm)
• Total rod loads published: up to 20,000 lb (≈89 kN)
• Approximate weights: from ~2,200 lb (≈998 kg) to ~7,600 lb (≈3,447 kg) depending on configuration
• Nominal package width: 80 in (2,032 mm); crank centerline: 10.25 in (260 mm)
• Oil filters: screw‑on, 5 µm nominal / 17 µm absolute