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Pulley block extended-range oil pumping unit

A technology of extended range and pumping unit, which is applied in the direction of exploitation fluid, wellbore/well parts, earthwork drilling and production, etc. It can solve the problems of inability to extract oil, narrow use range, small stroke, etc., and achieves easy start-up, convenient operation, The effect of improving the service life

Inactive Publication Date: 2014-02-05
德阳恒联机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual use of this patent, due to structural and load-bearing reasons, the stroke of the pumping unit can only reach 3 meters, the stroke is small, and it cannot effectively extract more oil from the oil well, and there is a narrow range of use. shortcoming

Method used

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  • Pulley block extended-range oil pumping unit
  • Pulley block extended-range oil pumping unit
  • Pulley block extended-range oil pumping unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A range-extending pumping unit with a pulley block, comprising a base 1, a driving mechanism, a driving wheel 4, a sling 5, a guide wheel and a range-extending device. The range-extending device includes a first fixed pulley block 9, a second fixed pulley block 10, and a guide 11 and a walking trolley 12 arranged on a guide rail 11, the guide rail 11 is horizontally fixed above the base 1, the first fixed pulley group 9 is arranged at the end of the guide rail 11, and the second fixed pulley group 10 is fixed on the walking carriage 12 , The driving mechanism is connected with the driving wheel 4 fixed on the base 1, and the driving wheel 4 is connected with the trolley 12 and drives the trolley 12 to make linear reciprocating motion on the guide rail 11; the guide wheel is fixed on the guide rail 11 Above, one end of the suspension rope 5 is a fixed end, and the other end is wound backward through the first fixed pulley block 9 and the second fixed pulley block 10, and t...

Embodiment 2

[0052] This embodiment is basically the same as the above embodiment, the main difference is: the number of fixed pulleys in the first fixed pulley set 9 is preferably set to 5, and the number of fixed pulleys in the second fixed pulley set 10 is preferably set to 4. The fixed pulleys in the two fixed pulley sets are parallel to each other and arranged in a row. The fixed end of the sling 5 is fixed on one of the fixed pulleys at the two ends of the first fixed pulley set 9, and the remaining four fixed pulleys in the first fixed pulley set 9 The pulleys and the four fixed pulleys in the second fixed pulley set 10 cooperate with the hoist rope 5 to wind. Through the above-mentioned preferred embodiments, the stroke of the pumping unit can reach more than 6 m. However, it is not limited to the above-mentioned preferred embodiments. For example, the distance between the first fixed pulley 9 and the second fixed pulley 10, the number of fixed pulleys in the first and second fixed p...

Embodiment 3

[0055] This embodiment is basically the same as the above embodiment, the main difference is: the guide rail 11 is provided with a protective cover, the protective cover is fixed on the guide rail 11, the guide rail 11, the trolley 12, the first fixed pulley 9 and the second The two fixed pulley blocks 10 are all located in the protective cover, so as to prevent impurities such as wind and sand from entering the range extension device, thereby affecting the stable operation of the range extension device. Among them, for the smooth operation of the trolley 12, guide holes are provided on both sides of the protective cover. The length of the guide holes is the same as the length of the linear displacement of the trolley 12 on the guide rail 11, and the width of the guide holes is compatible with the diameter of the connecting shaft 17. In order to facilitate the connection of the rope 5 between the fixed pulley block and the guide wheel, the protective cover is also provided with ...

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Abstract

The invention discloses a pulley block extended-range oil pumping unit which comprises a base, a driving mechanism, a driving wheel, a lifting rope, a guide wheel and a range extending device, wherein the range extending device comprises a first fixed pulley block, a second fixed pulley block, a guide rail and a traveling trolley arranged on the guide rail; the guide rail is fixed above the base; the first fixed pulley block is arranged at one end part of the guide rail; the second fixed pulley block is fixed on the traveling trolley; the driving mechanism is connected with the driving wheel fixed on the base; the driving wheel is connected with the traveling trolley and used for driving the traveling trolley to do linear reciprocating motion on the guide rail; the guide wheel is fixed above the guide rail; one end of the lifting rope is a fixed end; the other end of the lifting rope is wound around the first fixed pulley block and the second fixed pulley block and then is connected with a wellhead oil pumping device through the guide wheel. The pulley block extended-range oil pumping unit can quickly and smoothly start, realize smooth oil pumping without the need of forward and reverse rotation of a motor and reach the stroke more than 6 m.

Description

Technical field [0001] The invention relates to the technical field of oil extraction machinery, in particular to a pulley block extended range pumping unit. Background technique [0002] In the prior art, oil extraction mainly uses beam pumping units to extract oil from oil wells. At present, the conventional beam pumping unit is generally composed of rope suspension, donkey head, walking beam, frame, connecting rod, reducer, crank, balance device, base, frame and motor. Due to the overall weight of the pumping unit, the beam pumping unit has disadvantages such as difficulty in starting, large power consumption, high manufacturing cost, easy damage and high maintenance cost. [0003] In order to solve the above problems, the following technologies have been proposed in the prior art: [0004] For example, Chinese Patent No. "89201812.7" discloses a wide-band long-stroke pumping unit. Its publication date is August 23, 1989. Its technical solution is that the pumping unit consists ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00
Inventor 李兆胜
Owner 德阳恒联机械制造有限公司
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