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Sand and gas preventing oil pump

An oil well pump and sand control technology, which is applied to pumps, pumps with flexible working elements, components of pumping devices for elastic fluids, etc., can solve the problems of not being able to adapt to sand production, and the air pump does not have sand control characteristics, etc., to achieve The structure is simple and reliable, and the effect of long service life

Active Publication Date: 2021-08-06
CSIC ZHONGNAN EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the anti-air pump generally does not have the characteristics of sand control, especially it cannot adapt to the well conditions with severe sand production

Method used

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  • Sand and gas preventing oil pump
  • Sand and gas preventing oil pump

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1~2 As shown, the sand-proof and gas-proof oil well pump includes a pump barrel assembly, which is provided with a sliding plunger assembly, and the end of the pump barrel assembly is provided with a gas-liquid separation assembly 14, and the gas-liquid separation assembly One side of 14 is provided with a liquid inlet passage 1406, and the oil containing sand, gas and sand is passed into the pump barrel assembly through the liquid inlet passage 1406, and the short plunger 21 in the plunger assembly is sealed against the inside of the pump barrel assembly Sliding to form a compression chamber for multi-stage grit settling and exhaust.

[0031] In the preferred scheme, the pump barrel assembly consists of an upper collar 1, an elastic locking claw 2, a grit chamber 3, a support ring 4, a pump barrel extension barrel 5, an intermediate collar 6, a short pump barrel 7, a bridge pipe 8, a long The pump barrel 9, the lower coupling 10, the outer pipe 11, the...

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Abstract

The invention provides a sand and gas preventing oil pump, which comprises a pump cylinder assembly, wherein a sliding plunger assembly is arranged in the pump cylinder assembly; a gas-liquid separation assembly is arranged at an end of the pump cylinder assembly; a liquid feeding channel is formed in one side of the gas-liquid separation assembly; oil containing sand and gas enters the pump cylinder assembly via the liquid feeding channel; and a short plunger in the plunger assembly abuts against the interior of the pump cylinder assembly and slides hermetically, thereby forming a multi-stage sand settling and exhausting compression cavity. By adopting a three-stage sand prevention and two-stage gas prevention structure, the oil pump can adapt to crude oil extraction under a well condition of serious sand production, also has a good gas prevention effect, belongs to a special oil pump, can adapt to crude oil extraction under a well condition of serious sand production and high gas ratio, achieves a good sand prevention and gas prevention effect, and has a high bearing capacity and a long service life.

Description

technical field [0001] The invention relates to the field of oil exploitation, in particular to an oil well pump for preventing sand and gas. Background technique [0002] At present, many mechanical recovery wells in domestic oilfields are in complex well conditions with serious sand production and high gas content ratio. Since the downhole production fluid not only contains crude oil, but also contains gas, sand, water and other components, during the process of pumping crude oil, sand and gas will enter the oil well pump together with the oil, and after the sand enters the oil well pump, it will often enter the column. In the mating surface between the plug and the pump barrel, the wear between the plunger and the pump barrel will be accelerated, the service life of the oil well pump will be reduced, and in severe cases, sand jams and sand burial will be caused, which will affect the production of the oil well. After the gas enters the oil well pump, it will fill the vol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B47/00F04B53/16F04B53/14F04B53/10F04B53/12B01D21/00B01D21/02B01D19/00
CPCF04B47/00F04B53/162F04B53/14F04B53/1002F04B53/126F04B53/16B01D21/0042B01D21/02B01D19/00
Inventor 徐士文刘建魁张元圆唐裔振屈代容陈杰周世杰李进玉向恒媛傅胜英杨第伍杨宏李芳熊新
Owner CSIC ZHONGNAN EQUIP
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