Compound Balanced Pumping Unit

Compound Balanced Pumping Unit 

The compound balanced pumping unit is designed and developed by SANJACK Petro to address the inherent shortcomings of traditional beam pumps, such as high energy consumption and unsuitability for heavy oil production. 

  • Sanjack compound balance pumping unit has obtained the national patent.
  •  Compound balanced pumping unit is widely used in Chinese oil fields and exported to Kazakhstan, Algeria and other countries. 

 

Compound balance pumping unit is designed and manufactured according to sy/t5044-2003 “beam pumping unit” standard. Based on the traditional beam pumping machine, it can keep the original structure unchanged and add the beam tail balance device. 

At the same time, the beam tail balance device can change the pumping unit balance mode from simple crank balance to a combination of beam balance and crank balance composite balance. 

 

 

 

The unit integrates all the advantages of conventional beam pumping unit and optimizes the balance system to achieve the effect of low peak torque and power saving.  

 

When the pumping unit is working, the torque arm of the beam tail balance device changes with the position of the suspension point, so that the variation rule of the balance torque is consistent with the variation rule of the load torque. By balancing the load twice with beam tail balancing device and counterweight, the working conditions of the pumping unit are greatly improved, the selection grade of reducer and motor is reduced, and the lifting capacity of the pumping unit is increased. Compound balanced pumping unit is widely used in oil fields of our country, which has an energy saving effect of up to 30% compared with conventional beam pumping unit. 

Parameter Table
Model CYJY8-3-37HF CYJY10-3-53HF CYJY10-4.2-53HF CYJY12-4.2-73HF CYJY12-4.8-73HF CYJY14-5.4-89HF CYJY16-5.4-105HF CYJ16-5.5-89HF
Load rating(kN) 80 100 100 120 120 140 160 160
Stroke length(m) 3;2.5;2 3;2.5;2 4.2;3.6;3 4.2;3.6;3 4.8;4.2;3.6 5.4,4.5,3.6 5.4,4.5,3.6 5.5,4.6,3.7
Stroke frequency   (min-1 6,5,4 6,5,4 6,5,4 6,5,4 6,5,4 3,4,5 3,,4, 5 3,4, 5
Crank direction Clockwise
Balanced type Compound balanced
Gear Reducer Model CJH-850 CJH-1000 CJH-1000 CJH-1000 CJH-1000 CJH-1100 CJH-1200 CJH-1100
Gear ratio 28 31.73 31.73 31.73 31.73 39.52 30.246 39.52
Rated torque(kN.m) 37 53 53 73 73 89 105 89
Motor Model Y225M-8 Y250M-8 Y280S-8 Y280M-8 Y280M-8 Y315S-8 Y315M-8 Y315S-8
Power(kW) 22 30 37 45 45 55 75 55
 Speed (r/min) 730 730 740 740 740 740 740 740
Structure unbalance(kN) 7.6 7.7 4.26 6 0.237 -6.7 -7.2 -1.73
Total Weight(t) 18.6 19.5 23 25.3 26.3 32 34.5 33.9
Size(m) 8.24×2.2×6.793 8.24×2.27×6.793 11×2.3×8.5 11×2.7×8.7 11.9×2.7×9.3 10.58×2.74×10.15 10.58×2.74×10.15 12.37×3.52×10.15

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