What is a sucker rod
The sucker rod is the slender rod of the pumping well, which is connected to the polished rod and the lower part of the sucker pump to transmit power.
The single length of the sucker rod is 7.62 or 8 meters and 9.14 meters, and the material is generally low-carbon alloy steel after quenching and tempering treatment. It is connected one by one with internal thread hoops in the oil pipe and extends to the piston at the underground oil layer. Reciprocating motion to pump oil. The length of the current oil well is generally about 2,000 meters. Take Shengli Oilfield as an example, the deepest is more than 3,000 meters.
Composition: Pumping Unit, Sucker Rod, Oil Pump
The name of each part of the oil pumping system
1. Fixed valve 2, pump barrel 3, plunger 4, swimming valve 5, sucker rod 6, dynamic liquid level 7, oil pipe 8, casing 9, tee 10, packing box 11, polished rod 12, Donkey head 13, beam 14, connecting rod 15, crank 16, reducer 17, motor
Ordinary sucker rod: C, D, K, KD grade sucker rod
High-strength sucker rod: H grade, divided into HY, HL, KHL three types
Special Sucker Rod: Hollow Sucker Rod: Steel Rod
Continuous sucker rod: steel rod
Special sucker rod for screw pump: tapered thread sucker rod, plug-in sucker rod
Fiberglass sucker rod: fiber reinforced plastic sucker rod
Flexible sucker rod: carbon fiber composite sucker rod, wire rope sucker rod
Other types of sucker rods: electric heating sucker rods
From right to left are:
Sucker rod length, mm
Grade and type, C, D, K, KD, HL, HY, KHL
Nominal diameter of rod body, mm
Steel sucker rod code, CYG
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