Conventional pumping units, also known as beam pumps, are widely used in oil and gas extraction for their simplicity, reliability, and suitability for onshore wells. These units consist of a prime mover, usually an electric motor or a gas engine, connected to a gearbox that converts the rotational motion into the reciprocating motion of a walking beam. The walking beam is a long, horizontal arm that pivots on a Samson post, with one end connected to the gearbox and the other end attached to a horsehead, which is linked to a polished rod. The polished rod extends down the wellbore and is connected to the sucker rod string, which in turn is attached to the pump at the bottom of the well. As the walking beam moves up and down, it causes the sucker rods to reciprocate, activating the downhole pump to draw oil to the surface. Conventional pumping units are known for their durability, able to operate in harsh environments with minimal maintenance. They are suitable for low to medium production wells and can be easily adjusted to optimize the pumping rate. Despite the emergence of more advanced technologies, conventional pumping units remain a staple in the oil and gas industry due to their proven performance, ease of repair, and cost-effectiveness for many well conditions.
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