* All wells are operating from a conventional beam pumping unit.
However, over the long-term application, the long-stroke with low-speed produces the best financial and mechanical advantages for the beam pumping unit.
* The change of pumping speed has shown an important and strong effect on loading and stress of the beam pumping unit. This leads to various inefficiencies and creates a financial loss in the long run.
It is a fully automated self-optimizing beam pumping unit
, which enables continuous, maximum production, least production deferment and less operator's intervention, hence making it safer and cost effective.
Currently the most widely used beam pumping unit system is shown in Fig.2 [5,6,7,8].
 Zhang, X.L., et al., 2001, "Technology and Application of Beam Pumping Unit", Petroleum Industry Press, Beijing, China, chap.8.
The special structure of the beam pumping units
has many disadvantages, such as huge form, high cost, high energy consumption, and low efficiency.
* Installing fibre optics to all major new facilities and connecting over 200 beam pumping units with the ability to remotely control all the connected facilities;
* Beam Pumping Units conversion from temporary electrical generators to permanent grid power;
The Lufkin foundry produces iron castings used to make Lufkin beam pumping units
and Lufkin power transmission equipment.