A light rod magnetic sealing structure device

A technology of magnetic sealing and polished rods, which is applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc., can solve the problems of not being able to guarantee the reliability of dynamic sealing of sealing materials, easy wear of sealing materials, and failure of sealing structures, etc. Achieve a good dynamic sealing effect, improve the overall sealing performance, and increase the effect of sealing performance

Active Publication Date: 2022-07-19
锦州光和密封实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the movement of the polished rod, the sealing material is easy to wear, and the reliability of the dynamic sealing of the sealing material cannot be guaranteed, resulting in the leakage of crude oil
And in extreme environments such as high temperature, low temperature, corrosion, etc., the original sealing structure will quickly fail

Method used

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  • A light rod magnetic sealing structure device
  • A light rod magnetic sealing structure device
  • A light rod magnetic sealing structure device

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Embodiment Construction

[0058] The present invention will be further described in detail below, so that those skilled in the art can implement it with reference to the description.

[0059] like figure 1As shown in the figure, the present invention provides a polished rod magnetic sealing structure device. The magnetic sealing device 140 and the compensation compression spring 122 are arranged coaxially from top to bottom. On both sides of the lower side, the first casing 110 is connected to the wellhead tee through the flange, and specifically includes: the first casing 110, the spring seat 121, the compression spring 122, the top sleeve 123, the sealing packing 130, the magnetic seal A device 140, a sealing end, two blowout preventers and a polished rod 190. One end of the first casing 110 is detachably disposed on the wellhead and is coaxially sleeved on the outside of the polished rod 190. The first casing 110 is under the The wellhead tee is connected by flange bolts; the first housing 110 has ...

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Abstract

The invention discloses a polished rod magnetic sealing structure device. The magnetic fluid seal forms the primary seal, the shape memory alloy seal forms the secondary seal, the automatic compensation compression structure forms the tertiary seal, and the wellhead manual sealing structure forms the quaternary seal. The overall structure It is integrated with the wellhead tee through the flange plate. The sealing structure composed of magnetic fluid and shape memory alloy is located on the upper part of the polished rod sealing device and surrounds the polished rod. The automatic compensation compression spring compresses and compensates the sealing packing according to the compression action of the spring. Combined with the first two parts, the polished rod is sealed three times. Two sets of wellhead manual sealing structure The flanges are symmetrically connected to both sides of the polished rod sealing device, and the front seal is pushed by the rotating handwheel to squeeze the polished rod to achieve sealing.

Description

technical field [0001] The invention relates to the technical field of wellhead sealing, and more particularly, the invention relates to a polished rod magnetic sealing structure device. Background technique [0002] In the development of my country's oilfields, it is mainly mechanical oil extraction, and the oil rod pumping equipment is the most important equipment. According to the actual survey, my country's oil rod pumping equipment accounts for more than half of the total oil wells, and the polished rod sealing device is the most important device in these equipment. [0003] The life of the sealing ring of the conventional polished rod sealing device of the rod pumping unit varies, but most of them are not more than three months, and even less than one day. Therefore, the sealing ring needs to be replaced frequently, and the oil well cannot be opened when the sealing ring is replaced, and the oil well needs to be shut down. In addition, in order to avoid leakage and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03
CPCE21B33/03
Inventor 杜宪峰马西阳靳继港律茵
Owner 锦州光和密封实业有限公司
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