Flexible-beam pumping unit

Abstract

The invention discloses a flexible-beam pumping unit which comprises a base, a power machine, cranks, a hoisting sheave support, a transmission mechanism, pumping ropes, a power hoisting sheave set, a pumping hoisting sheave set and a beam hanger. The power machine is fixedly mounted on the right portion of the base, and the cranks are fixedly mounted on power output shafts of the power machine; the hoisting sheave support is fixedly mounted on the left portion of the base. The flexible-beam pumping unit has the advantages that the flexible-beam pumping unit is reasonable and compact in structure and convenient to use; power transmission ropes and the pumping ropes drive a pumping rod and a plunger of a downhole oil pump, so that a pumping effect can be realized, equipment can be lightened and shortened, and the flexible-beam pumping unit is low in material consumption, convenient to maintain and low in expense; the speeds can be regulated by a motor under the control of a variable-frequency controller, and the ascending speed and the descending speed of the pumping rod can be regulated via the quantity of loads, so that the flexible-beam pumping unit is high in pumping speed when the quantity of downhole oil is high and is low in pumping speed when the quantity of downhole oil is low, and an intelligent pumping procedure can be implemented; energy consumption can be reduced while safety pumping is guaranteed, and the pumping efficiency can be improved; the customized hoisting sheave support can rotate rightwards to avoid a wellhead, so that on-site well repair operation can be facilitated.

Description

technical field [0001] The invention relates to the technical field of beam pumping units, and relates to a soft beam pumping unit. Background technique [0002] Beam pumping unit, also known as beam pumping unit, is one of the main types of pumping units currently used in oil fields; driven by an electric motor, it becomes the up and down movement of the donkey head through the gearbox and crank linkage mechanism, and the donkey The sucker rod drives the plunger of the downhole oil pump to move up and down to realize oil pumping; although the beam pumping unit has a simple structure and reliable operation, its pumping efficiency is low, especially for heavy oil wells with poor permeability, The pumping efficiency of low-production wells and wells with insufficient liquid supply is less than 10%, and the power consumption is large; at the same time, the equipment itself is large in size and weight, which is very inconvenient in manufacturing, transportation and use, and the ...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a soft beam pumping unit, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of the high center of gravity of the beam pumping unit. , large size, high risk of high-altitude maintenance, and poor safety; and the problems of inconvenient manufacturing, transportation and use, and high cost of use

[0004] The present invention can further solve the problems of low oil pumping efficiency and high energy consumption of the beam pumping unit through optimization

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