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Check valve and electric pump oil production string

A technology of one-way valve and oil production pipe, which is applied in the direction of pumps, drill pipes, casings, etc., and can solve problems such as burning motors and check valve embedding

Active Publication Date: 2020-09-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the pump is stopped due to the needs of management operations, the sand that enters the production string will be deposited in large quantities, causing the check valve to be buried and the motor to be burned.

Method used

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  • Check valve and electric pump oil production string
  • Check valve and electric pump oil production string
  • Check valve and electric pump oil production string

Examples

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Embodiment Construction

[0025] To clarify, when a component is said to be "set on" another component, it can be directly on the other component or there can be an intervening component as well. When a component is said to be "connected" to another component, it can be directly connected to the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are based on the drawings of the specification for the purpose of illustration and do not represent the only embodiment.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used herein in the description of the application is only for the purpose of describing specific embodiments, and is not intended to limit the application. As used herein, the term "and / or" includes any and all co...

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Abstract

The invention provides a one-way valve and an electric pump oil production pipe column. The one-way valve comprises a straight pipe and a by-pass pipe, wherein the straight pipe is provided with a one-way flow limiting mechanism, and the one-way flow limiting mechanism can communicate from top to down and is used for limiting the fluid below the one-way flow limiting mechanism to flow to the upperpart; and the upper end of the by-pass pipe is connected with the side wall of the straight pipe, the by-pass pipe communicates with the straight pipe, and the one-way flow limiting mechanism is located below the upper end of the by-pass pipe; and the axial direction of the by-pass pipe does not coincide exactly with that of the straight pipe. The one-way valve of the embodiment of the inventionhas the function of self-sand discharging while the normal unidirectional flow limitation action is achieved, and thus the occurrence of sand plug is avoided.

Description

technical field [0001] The present application relates to the technical field of electric pump oil production equipment, in particular to a check valve and an electric pump oil production string. Background technique [0002] The descriptions in this section merely provide background information related to the disclosure in this application and may not constitute prior art. [0003] The electric pump oil production string suitable for high-yield oil wells can at least include oil pipes, and one-way valves and pumps connected to the oil pipes in sequence. The lower end of the pump is connected to the motor, and the motor is connected to ground power equipment through cables, so that the pump can be driven to achieve oil production. . [0004] The electric pump oil production string is lowered into the casing, and a sand control screen is installed on the casing. The sand control screen can block the coarse sand with a larger particle size from the production string, but the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/06E21B17/00E21B43/38F04B17/03
CPCE21B17/00E21B34/06E21B43/38F04B17/03
Inventor 闫占辉王丽君
Owner PETROCHINA CO LTD
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