Downhole driven reciprocating pump oil recovery device

A technology for oil production equipment and reciprocating pumps, applied in electromechanical equipment, pumps, production fluids, etc., can solve the problems of increased workover operations and increased costs, and achieve the effects of improving efficiency, reducing costs, and eliminating transmission losses

Inactive Publication Date: 2019-01-01
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear and tear of the lifting rod pipe in inclined wells is more serious, resulting in increased workover operations and higher costs

Method used

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  • Downhole driven reciprocating pump oil recovery device
  • Downhole driven reciprocating pump oil recovery device
  • Downhole driven reciprocating pump oil recovery device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention is described in detail below in conjunction with accompanying drawing.

[0014] refer to figure 1 , an oil production device driven by a downhole reciprocating pump, comprising a rotating motor 1, a planetary reducer 2, an incomplete gear reversing mechanism 3, an intermediate transmission mechanism 4, a protector 5 and a plunger pump 7;

[0015] The power output end of the rotating electrical machine 1 is connected to the power input end of the planetary reducer 2, the power output end of the planetary reducer 2 is connected to the power input end of the incomplete gear reversing mechanism 3, and the power of the incomplete gear reversing mechanism 3 The output end is connected with the power input shaft 8 of the intermediate transmission mechanism 4 , and the power output end of the intermediate gear transmission mechanism 4 is connected with the piston rod 6 of the plunger pump 7 .

[0016] refer to figure 2 and image 3 , the intermediate t...

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Abstract

Disclosed is a downhole driven reciprocating pump oil recovery device. A rotating motor is connected with a planetary reducer. The planetary reducer is connected with an incomplete gear reversing mechanism. The incomplete gear reversing mechanism is connected with an intermediate transmission mechanism. The intermediate gear transmission mechanism is connected with a piston rod of a plunger pump.When the whole oil recovery device works, the rotating motor transmits power to the planetary gear reducer for speed reduction, then the power is transmitted to the incomplete gear reversing mechanism, thus low-speed forward and reverse rotation can be achieved, and finally, up-down reciprocating motion is achieved through the intermediate gear transmission mechanism; the problem of eccentric wearof a rod pipe is completely solved, meanwhile, the transmission loss of a sucker rod is eliminated, the efficiency is improved, the downhole driven reciprocating pump oil recovery device is more suitable for highly-deviated wells and horizontal wells, and is low in energy consumption, convenient to maintain, high in operating reliability, low in weight and low in cost.

Description

technical field [0001] The invention relates to the field of oil production engineering, in particular to an oil production device driven by a reciprocating pump downhole. Background technique [0002] At present, most of the oilfield pumping equipment is a beam pumping unit with a rotating motor as the power source, and a four-bar linkage mechanism is used for transmission. The system structure is complex, there are many intermediate transmission parts, high energy consumption, and low efficiency. And rod pump pumping (mainly beam pumping unit pumping) due to the existence of the sucker rod column, the output of the oil well, the depth of the pump hanging, the stroke and the pump efficiency are all limited, and it cannot cope with the increasing demand in the oilfield exploitation. Complex situations, such as gas, sand, wax, heavy oil, large displacement, deep or ultra-deep wells and directional well production, etc. In response to this situation, the rodless pump oil prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00F04B47/00F04B17/03H02K7/116H02K7/10H02K7/14
CPCE21B43/128F04B17/03F04B47/00H02K7/10H02K7/116H02K7/14
Inventor 闫文辉周江涛彭勇陈瑞泽李瑞东
Owner XI'AN PETROLEUM UNIVERSITY
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