Submersible-well multiple-cylinder vertical plunger oil-well pump power end

Abstract

The invention relates to a submersible-well multiple-cylinder vertical plunger oil-well pump power end. The submersible-well multiple-cylinder vertical plunger oil-well pump power end comprises a power source, a pump body, a bracket, a cam shaft, a bearing assembly and a pulling-back device, wherein the cam shaft, the bearing assembly and the pulling-back device are arranged in the pump body. Whenthe submersible-well multiple-cylinder vertical plunger oil-well pump power end is used, an oil submersible motor rotates to drive the cam shaft to rotate, the slope of the cam shaft drives fluid-endplunger heads to slide in circular-ring grooves in the slope of the cam shaft, the cam shaft reciprocates, and therefore oil is continuously discharged out of a liquid discharging pipe. The power endand the fluid end of an oil-well pump can be integrally designed, and integration of the rotating function and the reciprocating function can be achieved; in this way, the efficiency of the whole oil-well pump is improved, and energy consumption and the cost of the whole oil-well pump are reduced; the disassembling technology is simple and convenient, the service life is long, and the submersible-well multiple-cylinder vertical plunger oil-well pump power end is particularly suitable for the low-producing-well oil pumping working condition.

Description

technical field [0001] The present invention relates to the technical field of pumps, and specifically refers to a power end of a submersible multi-cylinder vertical plunger pump to solve the problem of low efficiency, high energy consumption, and lack of pumping functions for low-production wells inherent in traditional pumping units and pumps. technical problems. Background technique [0002] Oilfield pumps have been widely used in oil production processes. There are many varieties of oilfield pumps, which are generally divided into surface pumping units (also called kowtow machines), hydraulic piston pumps, downhole screw pumps, and centrifugal pumps. Although the existing various oil well pumps adopt different production techniques and working principles, they generally have the following deficiencies: huge equipment, high oil production power consumption, low efficiency (generally all below 30%), and short life. [0003] Because the oil well is hundreds of meters or ev...

AI Technical Summary

Problems solved by technology

Although the existing various oil well pumps adopt different production processes and working principles, they generally have the following deficiencies: huge equipment, large oil production power consumption, low efficiency (generally all below 30%), and short life

[0003] Since the oil well is hundreds of meters or even a thousand meters deep, the maintenance and lifting costs of the oil pump are very high, and it costs tens of thousands or tens of thousands of yuan, resulting in high operating costs.

Oil pumping equipment is also one of the reasons for the large power consumption and high cost of the oil field

At present, the most widely used at home and abroad is also the most traditional pumping unit (kowtow machine). This type of pump has the largest market demand, but this type of pump is not suitable for low-production wells, and its sucker rods are easy to wear and tear. Domestic oil fields The annual consumption of sucker rods is tens of millions of tons, and the resulting loss costs are astonishing

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