Submersible well type multi-cylinder vertical plunger oil well pump

Abstract

The invention relates to a submersible well type multi-cylinder vertical plunger oil well pump which comprises a pump body, a hydraulic end and a power end. The hydraulic end and the power end are integrally arranged in the pump, a liquid drainage pipeline is connected to the upper portion of the pump, a submersible oil motor is connected to the lower portion of the pump, and integration of the rotating function and the reciprocating function is achieved. During use, a cam shaft of the power end rotates under drive of a power source, plungers, connected with an inclined face, of the lower portion of the hydraulic end rise and fall along with the inclined face under rotation of the inclined face, that is, when the high position on the inclined face abuts against the lower ends of the plungers, the plungers move upwards to the high point, when the low position on the inclined face abuts against the lower ends of the plungers, the plungers move downwards to the low point, and therefore the plungers alternately carry out up-and-down reciprocating motion; and liquid inlet and outlet power is provided for combined valves through up-and-down operation of the plungers, and therefore oil outside the pump body is constantly drained through a liquid drainage pipe. The submersible well type multi-cylinder vertical plunger oil well pump is high in efficiency and low in energy consumption, the demounting process is simple and convenient, the service life is long, and the submersible well type multi-cylinder vertical plunger oil well pump is especially suitable for the low yield well oilpumping work condition.

Description

technical field [0001] The invention relates to the technical field of pumps, in particular to a well-submerged multi-cylinder vertical plunger pump to solve the problem of low efficiency and high energy consumption of traditional pumping units and pumps, which do not have the oil pumping function of low-production wells. question. 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 even kilometers deep, the cost of li...

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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