دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. an oil well pumping unit that is powered by an internal-combustion engine, electric motor, or rod line from a central power source. The walking beam of the pumping jack provides reciprocating motion to the pump rods of the well. See walking beam.2. a device that is manually operated to turn an engine over for starting. v: to raise or lift.

n: the fitting that hoist the weight and equipment.