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Anti-stuck diaphragm for plunger oil pump and machining method of same

An oil pump and diaphragm technology, which is applied to the components of the pumping device for elastic fluid, pump components, variable displacement pump components, etc., can solve the problems of complex diaphragm processing technology, complex working environment, and narrow downhole space, etc. Achieve the effect of large overall deformation, simple production process and method, and long life of the diaphragm

Active Publication Date: 2013-07-03
SINOPEC OILFIELD EQUIP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary diaphragms are used in plunger oil well pumps. The working environment is complex and the downhole space is small. The overall shape of the diaphragm is 5 meters long, and it is easy to fold and fatigue.
In addition, the overall processing technology of the diaphragm is complicated, and it is very difficult to directly process it into a whole film.

Method used

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  • Anti-stuck diaphragm for plunger oil pump and machining method of same
  • Anti-stuck diaphragm for plunger oil pump and machining method of same
  • Anti-stuck diaphragm for plunger oil pump and machining method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An anti-seize diaphragm for a plunger oil well pump, which is composed of a diaphragm assembly (1), a wear-resistant adapter ring (2), a pull wire (3), and a snap ring (4), and is characterized in that: the diaphragm The assembly (1) is composed of 100 to 1000 double-layer diaphragm units (5) whose inner and outer peripheral surfaces change to curved surfaces, extending in the shape of bellows through wear-resistant connecting rings (2); the outer diameter of the diaphragm assembly (1) 27.0mm to 95.3mm, the inner diameter is 13mm to 75.3mm; the double-layer diaphragm unit (5) includes an upper annular fluoroplastic material elastic layer (1a), a lower annular fluoroplastic material elastic layer (1b) and a ring clamp (1c ), the upper and lower annular fluoroplastic material elastic layers are hollow disk-shaped, and the small ends of the upper and lower annular fluoroplastic material elastic layers are symmetrically connected into one body through the ring clamp (1c); th...

Embodiment 2

[0040] An anti-jamming diaphragm for a plunger oil well pump, the difference from Example 1 is that there is no pull wire (3) to carry the tension, and at this time only 2-8 wear-resistant rings of the wear-resistant adapter ring are provided for The axial through groove (2d) for liquid circulation, the diaphragm assembly itself is in a compressed state or a naturally stretched state during the movement of the plunger, and the diaphragm bears a certain tension in the stretched state.

Embodiment 3

[0042] A processing method for an anti-jamming diaphragm of a plunger oil well pump mainly includes the following steps:

[0043] 1. Make wear-resistant adapter ring (2) and double-layer diaphragm unit (5) respectively, described wear-resistant adapter ring (2) comprises annular connection clamp (2a) and wear-resistant ring (2b), described double-layer diaphragm unit (5) The inner peripheral surface is curved, including the upper annular fluoroplastic material elastic layer (1a), the lower annular fluoroplastic material elastic layer (1b) and the ring clip (1c), the upper and lower annular fluoroplastic material elastic layers are both Hollow disc shape, the small ends of the upper and lower annular fluoroplastic material elastic layers are symmetrically connected into one body through the ring clip (1c); the wear-resistant connecting ring (2) includes a wear-resistant Ring (2b) and an annular connecting clip (2a) for connecting each double-layer diaphragm unit (5); the outer ...

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Abstract

The invention relates to an anti-seize diaphragm for a plunger oil pump and a processing method thereof, which is composed of a diaphragm assembly, a wear-resistant connecting ring, a pull wire, a snap ring, etc. It is composed of two double-layer diaphragm units and wear-resistant connecting rings, and the double-layer diaphragm units are connected by wear-resistant connecting rings. The two ends of the diaphragm assembly are snap rings, and the pull wire passes through the wear-resistant connecting rings and snap rings to the diaphragm assembly. connected into a whole. In the present invention, the local deformation is small during the working process of the oil well pump. After each double-layer diaphragm unit returns to elastic deformation, it relies on the pull wire to bear the tension during the continuous stretching movement. The outer peripheral part of the ring is a wear-resistant ring, and the life of the diaphragm is long; the overall deformation of the diaphragm is large, and it can realize normal stretching and contraction. It is suitable for the isolation and sand prevention of the pumping channel at the contact point between the pump barrel and the plunger of various stroke conventional oil well pumps. And can effectively reduce wear and improve pump efficiency.

Description

technical field [0001] The invention relates to a diaphragm for preventing pump jamming and improving pump efficiency of a plunger oil well pump and a processing method thereof, and is particularly suitable for use in pumps for preventing fine sand, medium sand, coarse sand, salt, wax, etc. And maintenance. Background technique [0002] Sand production refers to the phenomenon that sand particles migrate out of the oil layer with fluid during the production of oil and gas wells. Sand production in oil reservoirs is inevitable, and sand production in oil and gas wells is one of the most important problems encountered in production. At present, most oilfields in China have entered the later stage of development, and the water cut is getting higher and higher. The sand production rate increases with the increase of water saturation, and the sand production in oil layers is becoming more and more serious. Sand production from oil wells has a wide range of particle size distrib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/00
Inventor 刘运荣刘华杰陈向军类歆简志勇李新年张斌
Owner SINOPEC OILFIELD EQUIP CORP
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