Single-reversing oil pumping unit with triangular chains

Abstract

The invention relates to a single-reversing oil pumping unit with triangular chains. The single-reversing oil pumping unit comprises a reversing turning wheel, a weight basket, a sucker rod and a reversing mechanism. A steel wire rope is wound across one end of the reversing turning wheel to be connected with the sucker rod, and the other end of the steel wire rope is connected with the reversing mechanism through the weight basket. The reversing mechanism comprises a fixing rack and a lifting power mechanism arranged on the fixing rack. The lifting power mechanism comprises first front and rear upper-right positioning adjustment chain wheels, second front and rear upper-left positioning adjustment chain wheels, first front and rear lower-right large positioning guiding chain wheels, second front and rear lower-left large positioning guiding chain wheels, first front and rear lower-right small positioning guiding chain wheels and second front and rear lower-left small positioning guiding chain wheels. The single-reversing oil pumping unit has the advantages that since the triangular lifting power mechanism is adopted, the sucker rod can stay for 4-5 seconds when running to the horizontal chains, accordingly the sucker rod can have the time to retract, the oil pumping time is much longer than the non-oil pumping time, the oil pumping efficiency is effectively improved, and the oil pumping quantity is effectively increased.

Description

technical field [0001] The invention relates to the technical field of oil pumping equipment, in particular to a triangular chain single-reversing oil pumping unit. Background technique [0002] For a long time, my country's oilfield development has mainly used beam pumping units. Although beam pumping units have high reliability, their operating efficiency is low and energy consumption is large, which makes crude oil development cost high and cannot meet the needs of energy-saving and consumption-reducing development. , and conventional pumping units are difficult to achieve long strokes and large loads. [0003] At present, in the process of oil production in the oil field, the closed box pumping unit adopted has only one circulating chain in a single pair of circulating motions, and only one circulating shaft is performing a circular motion at a uniform speed. When the sucker rod runs up and down, it does not cause oil pumping The rod is elastically elongated, and only 35...

AI Technical Summary

Problems solved by technology

[0006] When the shaft is on the vertical line of the chain, the shaft moves downward, and the speed of the shaft increases; when the reversing shaft moves to the oblique line of the circulating chain, the shaft moves upward slowly. Both make the oil pumping time longer than the non-oil pumping time, which can save energy. Although this device improves a certain amount of oil pumping, there is still a part of the liquid that cannot be recovered in the oil pumping pipe.

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