Long-stroke oil well pump

An oil well pump and long-stroke technology, which is applied in the direction of pumps, pump components, variable displacement pump components, etc., can solve the problems affecting the pump efficiency of the oil well pump, the stroke limitation of the oil well pump, and the normal production capacity of the oil well, and achieve low processing cost, Improve pump efficiency and release production capacity

Active Publication Date: 2020-12-01
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The oil well pump is one of the main lifting pumps in oil production engineering. Due to the limitation of processing cost and machining accuracy, the length of the pump barrel is limited to a certain extent, which limits the stroke of the oil well pump, which affects the operation of the oil well pump. Pump efficiency affects the normal production of oil wells

Method used

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] A long-stroke oil well pump, including an inner pump barrel and an outer pump barrel arranged inside and outside, both of the inner pump barrel and the outer pump barrel are in an upright state, and a fixed valve is arranged in the lower end of the outer pump barrel, and the inner pump barrel Contains an upstream floating valve, a middle floating valve and a downstream floating valve arranged in sequence from top to bottom, the downstream floating valve is located above the fixed valve, the inner pump barrel can move up and down relative to the outer pump barrel, the upstream The movable valve, the middle movable valve and the downstream movable valve can move up and down synchronously w...

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Abstract

The invention discloses a long-stroke oil well pump. The pump comprises an inner pump cylinder and an outer pump cylinder sleeving the inner pump cylinder, wherein the inner pump cylinder and the outer pump cylinder are both in a vertical state, a fixed valve is arranged in the lower end of the outer pump cylinder, an upper traveling valve, a middle traveling valve and a lower traveling valve aresequentially arranged in the inner pump cylinder from top to bottom, the lower traveling valve is located above the fixed valve, and the upper traveling valve, the middle traveling valve and the lowertraveling valve can synchronously move up and down along with the inner pump cylinder. According to the long-stroke oil well pump, a combined pump barrel and a combined plunger are used in cooperation, the stroke of the oil well pump is increased, the cost is lower than the machining cost of an oil well pump with the same stroke, the pump efficiency of the oil well pump is improved, and the production capacity of oil is released to a certain extent.

Description

technical field [0001] The invention relates to the technical field of oil exploitation equipment, in particular to a long-stroke oil well pump. Background technique [0002] The oil well pump is one of the main lifting pumps in oil production engineering. Due to the limitation of processing cost and machining accuracy, the length of the pump barrel is limited to a certain extent, which limits the stroke of the oil well pump, which affects the operation of the oil well pump. The pump efficiency affects the normal performance of oil well production. Contents of the invention [0003] In order to improve oil pumping efficiency, the present invention provides a long-stroke oil well pump, which uses a combined pump barrel and combined plunger to increase the stroke of the oil well pump, and the cost is lower than that of the same stroke oil well pump. The processing cost is low, the pump efficiency of the oil pump is improved, and the production capacity of the oil inlet has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B47/00F04B53/10F04B53/16
CPCF04B47/00F04B53/162F04B53/1002F04B53/166
Inventor 王书慧罗恩勇麻鹏宇许坤苏娟闫瑞生蒋川赵长亮刘冬雷张乾赐
Owner PETROCHINA CO LTD
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