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Strong anti-thickening anti-sand hydraulic feedback oil pump with long plug ring seal and oil inlet sand deposition path

A hydraulic feedback and oil well pump technology, applied to pumps with flexible working elements, parts of pumping devices for elastic fluids, pumps, etc., can solve problems such as irreparable wear, difficult processing, and different standards , to achieve the effect of long operation period, simple operation and good sealing performance

Inactive Publication Date: 2008-03-26
陈世家
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the disadvantages of the above-mentioned oil well pumps such as different standards, difficult processing, poor sealing, and irreparable wear, develop the field of high-viscosity sand control and reduce the partial wear of rods and tubes, a ring-type sealed pump barrel with a long plunger-type long plug was invented. Ring-sealed hydraulic feedback oil well pump and equipped with oil inlet and sand setting channel structure

Method used

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  • Strong anti-thickening anti-sand hydraulic feedback oil pump with long plug ring seal and oil inlet sand deposition path
  • Strong anti-thickening anti-sand hydraulic feedback oil pump with long plug ring seal and oil inlet sand deposition path
  • Strong anti-thickening anti-sand hydraulic feedback oil pump with long plug ring seal and oil inlet sand deposition path

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0020] Example 2. One sand scraping ring 17, three metal rings 18 and three non-metal rings 19 are set.

example 3

[0021] Example 3, the metal ring 18 is an automatic compensation metal ring; the non-metal ring 19 is an automatic compensation non-metal ring.

[0022] The sand scraping ring 17 is made of cemented carbide, and the gap with the plunger is very small, and the horizontal direction can move to ensure that the plunger is not jammed after being lowered, and its effect prevents sand from entering the sealing section.

[0023] The metal ring 18 can be made of high wear-resistant and corrosion-resistant metal material with automatic compensation function, which can compensate the wear and pressure of the seal ring at any time, so the seal is durable and is an important link to ensure high pump efficiency and long service life.

[0024] The non-metallic ring 19 can be a sealing ring with automatic compensation function made of high wear-resistant, corrosion-resistant and high-temperature-resistant (≤300°C) materials. Due to the sand scraping at the front end and the protection of the m...

example 4

[0025] Example 4. For a powerful anti-thickness and anti-sand hydraulic feedback oil well pump with a long plug ring seal and an oil inlet and sand setting channel, a sand discharge hole 4 is provided between the outer pump barrel 8 and the upper pump barrel 7, and the outer pump barrel 8 and the upper pump barrel 7 and the lower pump cylinder 12 are provided with a grit chamber 13, and a well fluid passage 14 is provided at the bottom of the lower plunger 11 and the lower pump cylinder 12.

[0026] The oil-inlet sand settling channel is composed of the inner pump head, the annular space of the inner and outer pump barrels and the oil-inlet sand settling structure, so that the accumulated sand particles sink into the sand storage pipe under the pump to ensure that the plunger is not buried or stuck, thereby greatly improving service life.

[0027] The technology of the present invention is that the hydraulic feedback oil well pump is provided with a long plug ring seal and an ...

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Abstract

The invention relates to a kind of hydraulic feedback oil-well pump with a long round plug and passageways for oil-entering and sand-depositing, strong guard against dense and, includes sealing total five and double passageways structure of oil-entering and sand-deposition. The trait of the pump is fixing a long plug sealing system between shaft-plug and tube, and fixing a passageway structure of oil-entering and sand-depositing between pump tube and tube outside. This equipment is used to enhance the usefulness of the pump, enhance the function avoiding dense and sand, prolong the using life. The invention has reasonable design, simple structure, easy-making, and convenient-using, efficient and good sealing function; entering passage is separated from depositing passageway, not gather in the tube as the routine pump do, the oil tube pole avoids buried by sand, Even if under the condition that oil is buried in sand, the pump can also produce with sand. The life span of this pump is three to five times more than the routine one.

Description

[0001] Field [0002] The invention relates to an oil well liquid extraction device-hydraulic feedback oil well pump in petroleum exploitation, in particular to a powerful anti-thickness and anti-sand hydraulic feedback oil well pump with a long plug ring seal and an oil inlet and sand setting channel. Background technique [0003] At present, the sealing of the hydraulic feedback oil pump driven by the pumping unit is mostly realized by the cooperation of a short plunger (generally 0.9-1.2m) and a long pump barrel with unequal diameters, and there is no oil inlet and sand sedimentation channel. The sealing strength depends on the contact area between the plunger and the inner surface of the pump barrel and the fit clearance. Sand accumulation in the pipe string will affect the service life of the pump, so the following defects still exist: [0004] 1. It is difficult to unify the use standard and processing standard. Because the inner surface of the pump barrel is slender (i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/02F04B47/02E21B43/00
Inventor 陈世家陈丽晖陈东升
Owner 陈世家
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