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Screw pump for oil extraction

A screw pump and connecting rod technology, which is applied to pumps, pump components, rotary piston pumps, etc., can solve the problem of limited life of screw pumps, such as the bond strength between rubber and stator housing, and achieve the effect of increasing the service life

Active Publication Date: 2018-05-18
INST OF SINOPEC OILFIELD EQUIP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually the life of a progressive cavity pump is limited by the bond strength between the rubber and the stator housing

Method used

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  • Screw pump for oil extraction
  • Screw pump for oil extraction
  • Screw pump for oil extraction

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0027] It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are conventional methods, and the reagents and materials, if not otherwise specified, can be obtained from commercial sources; in the description of the present invention, The terms "landscape", "portrait", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", The orientation or positional relationship indicated by "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have Certain orientations, co...

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Abstract

The invention discloses a screw pump for oil extraction. The screw pump for oil extraction comprises a stator shell body and a rubber layer, wherein the inner surface of the stator shell body is sunken towards the direction of the outer sidewall of the stator shell body to form a plurality of grooves; and the rubber layer is annularly bonded onto the inner surface of the stator shell body. According to the screw pump for oil extraction, the bonding strength between rubber and the stator shell body is increased, the capacity of resisting to transversal and circumferential shear force between the rubber and the stator shell body is improved, and the service life of the screw pump is prolonged.

Description

technical field [0001] The invention belongs to the technical field of oil and gas drilling and production equipment, and mainly relates to an oil production screw pump used for reliable operation in a high-temperature and high-pressure environment. Background technique [0002] The screw pump oil production system is a mechanical oil production equipment in which the motor drives the screw pump rotor to rotate at high speed through the transmission device, and the rotor cooperates with the stator to realize lifting. Compared with other artificial oil recovery technologies, the screw pump oil recovery technology has been increasingly widely used in oil production because it is suitable for the production of crude oil with high viscosity and high sand content, and has low energy consumption in the same period of oil production. Typically the life of a progressive cavity pump is limited by the bond strength between the rubber and the stator housing. Contents of the invention...

Claims

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Application Information

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IPC IPC(8): F04C15/00F04C13/00F04C2/107
CPCF04C2/107F04C13/001F04C13/002F04C15/00F04C2240/10
Inventor 李盛华刘学中李松邹艳
Owner INST OF SINOPEC OILFIELD EQUIP CORP