A sucker rod is a type of steel or fiberglass rod, usually between 25 and 30 feet (7 to 9 meters) in length, that is threaded at both ends. It is an essential component in the oil industry, used to connect the surface and downhole components of a reciprocating piston pump located in an oil well.
The pumpjack, which is visible above ground, drives the well pump and is connected to the downhole pump at the bottom of the well by a series of interconnected sucker rods. The fiberglass rods are available in 37 1/2-foot lengths and diameters of 3/4, 7/8, 1, and 1 1/4 inches, with metallic threaded ends, one female and the other male.
The surface unit plays a crucial role in transferring energy from the prime-mover to the sucker rod string for pumping the well. To accomplish this, it must convert the rotary motion of the prime-mover to reciprocating motion for the sucker rod, while also reducing the speed of the prime-mover to a suitable pumping speed. This speed reduction is achieved using a gear reducer, while a walking beam converts the rotary motion of the crankshaft into oscillatory motion. The walking beam is supported by a Samson post and saddle bearing, with the crank arm connected to the walking beam by means of a pitman arm. The horse head and bridle ensure that the pull on the sucker rod string remains vertical at all times, avoiding any bearing movement to the section of the sucker rod string above the stuffing box.
The polished rod and stuffing box combination is used to maintain an effective liquid seal at the surface, preventing fluid leaks and ensuring efficient pumping of the well. Overall, the sucker rod and its associated equipment play a vital role in the successful operation of oil wells.
If you are interested in Vigor’s Sucker Rod or other gas downhole tools for the oil and gas industry, please do not hesitate to contact us and we will provide you with the best quality products and services.
Post time: Dec-05-2023
