There are two models of the GasJack compressor for handling liquids, one with a standard blowcase and the other with an industrial positive displacement diaphragm pump. Both configurations include a high-capacity, gravity-feed, slug-catcher vessel with 2-in. dump line positioned upstream from the blowcase or pump. The slug-catcher includes a high-level controller that is designed to automatically prevent the unit from shutting down on high liquid level, enabling the unit to continue running and discharge liquids. The high-level controller in the slug catcher vessel is designed to automatically re-open the main inlet controller when the liquid levels are brought back down.
The blowcase configuration handles up to 140 BPD (23 m3/d) and includes a level-control in the blowcase—in addition to the one in the slug-catcher. A secondary dry-gas supply (such as the casing-head, a separator, or a propane tank) provides back up gas to run the engine and maintain instrumentation pressure during long shut-ins when the compressor is dealing with large slugs of liquids. After discharging the liquid, the unit automatically cycles back to suction.
The industrial pump configuration handles up to 450 BPD and features a Hydra-Cell H25 pump. Belt-driven by the compressor engine, the pump includes a pneumatic clutch that engages to discharge the liquid. A key benefit of this setup is the capability to handle liquid when very little gas is available.