دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (1) the extreme width (breadth) of the hull of a ship or mobile offshore drilling rig. (2) a walking beam. See walking beam.

n: the weights on a beam pumping unit installed on the end of the walking beam, which is opposite the end over the well. The counterbalance offsets, or balances, the weight of sucker rods and other downhole equipment installed in the well.

n: a machine designed specifically for sucker rod pumping. An engine or motor (prime mover) is mounted on the unit to power a rotating crank. The crank moves a horizontal member (walking beam) up and down to produce reciprocating motion. This reciprocating motion operates the pump. Compare pump jack.

n: a beam pumping unit that has a counterbalance weight on the walking beam.

n: an arm keyed at right angles to a shaft and used for changing radius of rotation or changing reciprocating motion to circular motion or circular motion to reciprocating motion. On a beam pumping unit, the crank is connected by the pitman to the walking beam, thereby changing circular motion to reciprocating motion.

n: the post on cable-tool rigs that supports the end of the walking beam when the rig is not operating.

n: the safe prop under the forearm of the balance beam on cable drilling ,used to prevent the worker being hurt when the back end of the balance beam breakups

n: a chemical feed pump that injects chemical reagents into a flowline system to treat emulsions at a rate proportional to that of the flow of the well fluid. Operating power may come from electric motors or from linkage with the walking beam of a pumping well.

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.

n: the ann that connects the crank to the walking beam on a pumping unit by means of which rotary motion is converted to reciprocating motion.

the connecting rod from the rotating counterweights to the beam on a beam lift pumping unit.

n: a ratchet mechanism that is actuated by a fixed rod or chain connected to the walking beam of a pumping unit and that provides a slow rate of rotation to the rod string, distriooting the wear on both rods and tubing.