Tower type oil sucking machine

Abstract

The invention relates to a tower type oil sucking machine, which comprises a machine frame, fixed pulleys, a connecting chain, a balancing weight, a sucker rod and a motor, wherein the fixed pulleys are arranged at the top end of the machine frame; the connecting chain is transmission cooperation with the fixed pulleys; the two ends of the connecting chain are respectively connected with the balancing weight and the sucker rod; the motor drives the balancing weight and the sucker rod to vertically move in opposite directions; the tower type oil sucking machine also comprises spring groups; the spring groups are fixedly arranged on the machine frame and are right against the balancing weight; and the spring groups can be compressed by the balancing weight in the vertical moving process of the balancing weight. In the upstroke and the downstroke of the oil sucking machine, the speed cannot suddenly change due to the effect of the spring groups; the acceleration cannot suddenly change; the occurrence of impact is avoided; and the service life of an oil sucking machine system is prolonged.

Description

technical field [0001] The invention relates to oil extraction equipment, in particular to a tower pumping unit. Background technique [0002] In oilfield production, mechanical lifting equipment is the main energy-consuming equipment. According to statistics, the annual energy consumption and electricity consumption of mechanical oil recovery system in my country has exceeded that of water injection system, becoming the largest energy-consuming household in oilfield production. More than 85% of the mechanical oil recovery systems used in oil fields are rod pumping systems. The beam pumping unit is a traditional oil pumping equipment widely used in oil fields. Usually, an AC asynchronous motor is connected to a four-bar linkage mechanism to drive the sucker rod through a reduction box, and drives the downhole pump to reciprocate up and down to deliver the downhole oil to the Come on the ground. Because of its simple structure, high reliability, convenient maintenance and o...

AI Technical Summary

Problems solved by technology

However, the beam pumping unit has low operating efficiency and consumes a lot of electricity. According to statistics, its efficiency is only about 15%-20%.

With the application of various new transmission devices, various beamless pumping units have also appeared on the production wells of various oil fields. Its uniform linear motion mode, long stroke and energy-saving features make it continuously expand the scale of use; but The reliability and service life of its transmission chain restrict the further development of the beamless pumping unit

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