Structure and performance analysis of the double horse head pumping unit
THe double horse head pumping unit is based on the conventional beam pumping unit where a rear horse head is installed at the end of the beam of which the radius of curvature is changing according to certain law,and in a stroke process,the length of the beam back boom and the pitmen are not constant values for this type of pumping unit. The double horse head pumping unit has conquered the disadvantage of the conventional one which can't easily achieve long stroke and power-wasting from bad balance performance,meanwhile,it remains the advantage of the conventional one which is stable and reliable. So far,the double horse head pumping unit has become a serialized and large-scale production,applied in the main domestic oilfieds,it is especially popular with the oildfiends that produc low or medium viscosity and high water-cut crude.
double horse headpumping unitefficient energy savingconventional reconstruction
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