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Eccentric abrasion inlet polished rod sealing packing box installation assembly for heavy oil well

A technology for installing components and packing boxes, which can be used in sealing/packaging, wellbore/well components, drill pipes, etc., and can solve problems such as packing and smooth rods

Inactive Publication Date: 2019-10-08
大庆浩东科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an imported polished rod sealing packing box installation assembly that can be partially worn for heavy oil wells, which solves the problem that the packing will still be too tight to the polished rod after the packing box moves

Method used

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  • Eccentric abrasion inlet polished rod sealing packing box installation assembly for heavy oil well
  • Eccentric abrasion inlet polished rod sealing packing box installation assembly for heavy oil well

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to the accompanying drawings, the present invention provides a technical solution: an eccentrically worn imported polished rod sealing packing box installation assembly for heavy oil wells, comprising a flange 1, a packing box 2, a packing 3, and a packing pressure cap 4 , lubricating copper ring 5, cover 6, multiple support rods 7 and centralizing assembly 8, wherein:

[0023] The flange 1 is detachably arranged a...

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Abstract

The invention discloses an eccentric abrasion inlet polished rod sealing packing box installation assembly for a heavy oil well. The eccentric abrasion inlet polished rod sealing packing box installation assembly for the heavy oil well comprises a flange, a packing box, a sealing cover, a multiple supporting rods and centralizing assemblies. The flanges are detachably arranged at the position of an oil well inlet, a through hole is formed in the center, and the bottom face of the flange is outwards provided with an annular installation groove along the edge of the through hole. The packing boxis movably arranged in the through hole of the flange of the oil well inlet, and a limiting boss of the packing box limits separable abutting against the bottom face of the flange. The sealing coveris detachably arranged in an upper opening of the packing box. The four supporting rods are evenly arranged on the periphery of the through hole. Each supporting rod comprises a bottom rod, an upper rod, a first connection bolt, a second connection bolt, a first spring and a second spring, wherein the bottom rod is detachably arranged on the flange, and the upper rod is detachably arranged on thesealing cover. According to the eccentric abrasion inlet polished rod sealing packing box installation assembly for the heavy oil well, after the polished rod is off center, the packing box moves along with the polished rod to meet a sealing purpose.

Description

technical field [0001] The invention relates to the technical field of oil well exploitation equipment, in particular to an eccentrically worn imported polished rod sealing packing box installation assembly for heavy oil wells. Background technique [0002] There are some heavy oil wells in each oil field. In the production process of heavy oil wells, thermal recovery is often used. This method will heat the packing, increase the volume of the packing, and increase the friction between the packing and the polished rod, especially in the polished rod. After eccentricity and inclination with the wellhead, the friction of the packing will be greater, and even the packing will lock the polished rod, and the polished rod will even break off after prolonged use. In order to prevent the packing from locking the polished rod excessively and affecting the sealing, it is necessary to increase the inspection frequency of workers, which obviously will greatly increase the workload. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03E21B17/10E21B23/00
CPCE21B17/1071E21B23/00E21B33/03
Inventor 黄国辉李航王秀伟于浩于红娟
Owner 大庆浩东科技有限公司
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