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Oil-submerged pump sand-blocking-type suction inlet

A suction port and submersible pump technology, which is applied to pumps, pump components, non-variable pumps, etc., can solve the problems of reducing the service life of the unit, wearing equipment and pipelines, and suction port blockage, so as to avoid serious wear and improve The effect of sand resistance performance

Pending Publication Date: 2019-07-02
天津市百利溢通电泵有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sand particles entering the submersible pump will wear equipment and pipelines, and even block pipelines, reducing the service life of the unit
The traditional suction port is easily blocked due to the small size of the filter slot, which affects the liquid inlet environment of the pump.

Method used

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  • Oil-submerged pump sand-blocking-type suction inlet
  • Oil-submerged pump sand-blocking-type suction inlet
  • Oil-submerged pump sand-blocking-type suction inlet

Examples

Experimental program
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Effect test

Embodiment Construction

[0038] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0039] Such as Figure 1 to Figure 3 As shown, the present invention discloses a sand-blocking suction port of a submersible pump, which includes an upper suction chamber 5 and a lower suction chamber 10 which have the same structure and are connected in series along the axial direction; the axial centers of the two suction chambers are provided with The same connecting shaft 6; each of the suction chambers includes a cylindrical housing 5.1;

[0040] The casing 5.1 is a porous screen structure, and the surface of the casing 5.1 is provided with several transparent outer liquid inlet holes 5.1.1 and sand discharge holes 5.1.2 along the radial direction. Preferably, the outer liquid inlet holes 5.1.1 are multiple rows of circular holes unifor...

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Abstract

The invention relates to the technical field of oil-submerged electric pump, and discloses an oil-submerged pump sand-blocking-type suction inlet. The oil-submerged pump sand-blocking-type suction inlet comprises an upper suction chamber and a lower suction chamber, and the upper suction chamber and the lower suction chamber are in the same structure and connected in series in an up-down mode; thetwo suction chambers share the same connecting shaft; each suction chamber comprises a cylindrical shell; a plurality of transparent outer liquid inlet holes and sand discharging holes are arranged on the surface of each shell in the radial direction; an assembly body and a sand blocking structure are sequentially arranged on each shell of the suction chambers from the up to the bottom; the assembly body is fixed to the inner wall of the shell; the sand blocking structure is connected with the connecting shaft in a sleeving mode; and the assembly body is attached to all the end surfaces beingconnected to the assembly body of the sand blocking structure, and the inner space of an inlet sleeve is relatively independent to the outer space of the inlet sleeve. According to the oil-submergedpump sand-blocking-type suction inlet, the two suction chambers connected in series are arranged to add the flow passing length of inletting liquid, and the sand blocking performance is improved through the combined action; entering of the most sand is blocked effectively through the combined action of the sieve tube type shell, a sand blocking taper sleeve and the inlet sleeve; and heavy abrasionon the device and pipelines due to blocking caused by sand accumulation is avoided.

Description

technical field [0001] The invention relates to the technical field of electric submersible pumps, in particular to a sand-blocking suction port of a submersible pump. Background technique [0002] With the continuous development of the petroleum industry, electric submersible pump units are widely used in oil production due to their high efficiency and stability. During the exploitation and operation of oil and gas wells, the formation near the bottom of the well is destroyed, and the weak rocks in the formation are broken to form sand, and the exfoliated formation sand enters the wellbore along with the formation liquid. When the formation fluid passes through the wellbore screen, some particles are blocked outside the wellbore, but a large number of sand particles still enter the wellbore. Sand particles entering the submersible pump will wear equipment and pipelines, and even block pipelines, reducing the service life of the unit. The traditional suction port is easily...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/40F04D29/70
CPCF04D29/406F04D29/708Y02A20/204
Inventor 李彤秦博文王曦梅
Owner 天津市百利溢通电泵有限公司
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