Oil pumping unit applying servo control system and method

Abstract

The invention relates to an oil pumping unit applying servo control system which comprises an oil pumping unit base and an oil pumping unit bracket fixed to the oil pumping unit base. A walking beam is hinged to the oil pumping unit bracket. The oil pumping unit is characterized in that an output end of a servo motor is connected to an input end of a motor reduction gearbox through a coupling, a scroll device is fixed to the output end of the motor reduction gearbox, one end of a nylon resin wear-resistant belt winds in the scroll device while the other end of the nylon resin wear-resistant belt is fixed to a tension sensor, and the servo motor as a power source drives the motor reduction gearbox and the scroll device to rotate forward and backward to retract and release the nylon resin wear-resistant belt, so that the oil pumping unit operates in a reciprocating manner to achieve exploitation; an automatic controller acquires working fluid level information of an oil well and sends the acquired working fluid level information to a servo motor controller; the servo motor controller controls the rotating speed of the servo motor to adjust the pumping speed at random. The oil pumpingunit provided by the invention is energy-saving and consumption-reducing, stabilizes and increases the output, and solves the problem that the operating rotating speed of an existing low liquid leveloil well is no longer reduced.

Description

technical field [0001] The present invention relates to an oil pumping unit using a servo control system and a method thereof, more precisely, relates to a new type of oil pumping unit which can adjust the stroke and stroke times according to the dynamic liquid level, increase liquid and reduce consumption. Background technique [0002] In the later stage of oil production, the liquid volume of oil wells is generally low. The currently known production methods for low liquid volumes are: using intermittent pumping units for mining or using one-level or two-level speed reduction for production, but for winter In the environment, in order to prevent pipeline clogging, only one-level or two-level speed reduction can be used for production. Most of the above methods cannot meet the optimal production plan of low liquid volume oil wells, and cannot meet the best energy saving and consumption reduction of oil wells. Contents of the invention [0003] In view of the deficiencies ...

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Problems solved by technology

[0002] In the later stage of oil production, the liquid volume of oil wells is generally low. The currently known production methods for low liquid volumes are: using intermittent pumping units for mining or using one-level or two-level speed reduction for production, but for winter In the environment, in order to prevent pipeline clogging, only one-level or two-level speed reduction can be used for production. Most of the above methods cannot meet the best production plan for low liquid volume oil wells, and cannot meet the best energy saving and consumption reduction of oil wells.

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