Self balance energy storage oil extractor

Abstract

The invention relates to a self balance energy storage oil extractor, which has the technical scheme that the self balance energy storage oil extractor mainly consists of a walking beam balance system, a crank balance system, a lever lifting system and a motive power lifting system, wherein the walking beam balance system is fixed on one end of a base of the oil extractor, the other end of a walking beam is connected with the crank balance system through a crank connecting rod, the top ends of a balance block and a crank are connected with the lever lifting system through steel ropes, the lever lifting system is connected with the motive power lifting system through steel ropes, a balance transmission wheel is connected with a balance transmission sub wheel in the motive power lifting system through a balance transmission wheel chain, the kinetic energy generated by free falling of a rod string in an oil well when the oil extractor descends is converted into the kinetic energy of lifting the balance block and the crank, and the potential energy of the balance block is stored. The invention has the advantages that the self kinetic energy of the system is fully utilized for completing the potential energy supplementation, and the auxiliary motor motive power is furthest reduced, so the effect of energy saving is reached.

Description

1. Technical field: [0001] The invention relates to a ground engineering device for oil production equipment in an oil field, in particular to a ground mechanical lifting part of the oil production equipment in an oil field, that is, the mechanical oil recovery ground device for an oil well, that is, a self-balancing energy storage pumping unit in the pumping unit series. 2. Background technology: [0002] 1. Development of Rod Pump Lifting Technology [0003] With the deepening of oil field development, most of my country's oil fields have entered the middle and late stage of development, oil wells gradually lose their self-spraying ability, and mechanical oil recovery has become the most important oil recovery method. According to statistics, my country's mechanical oil production wells account for more than 90% of the total number of oil wells. Among them, conventional rod pump wells composed of pumping unit-sucker rod-sucker pump account for about 90%, and the output ac...

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