API spec 11E belt pumping unit

Main advantages:

1. Slow speed and long stroke: long stroke has high filling coefficient and small fluid impact; slow stroke has little wear on downhole equipment and low cost.
2. Belt drive: The long-life heavy-duty belt drive can absorb the impact when the stroke is reversed, thereby effectively reducing the stress of the downhole components and making the pole run smoothly.
3. Low torque demand: Due to the short torque arm of only 0.46m, the torque demand is greatly reduced. As a result, smaller prime movers and gearboxes can potentially reduce energy costs by 10% to 40% compared to other manual lift systems.
4. Optimized structural design, safe and convenient: two sets of braking systems with automatic braking devices absolutely ensure the safety of the unit; the closed unit design makes the unit foldable for easy transportation and safe movement.
5. High reliability and less maintenance: adopt wear-resistant bearings, heavy-duty belts, heavy-duty sleeve roller chains, mechanical balance, perfect lubrication system and self-protection, and high reliability of closed unit design Ensure uniform load through optimized design and perfect rigidity.
6. The auxiliary system is relatively complete, not only suitable for mass production, but also for small batch production in deep wells.