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Pumping well polish rod sealing assembly

A technology for pumping wells and polished rods, applied in sealing/packing, drilling pipes, drilling equipment, etc., can solve the problems of shortened service life, time-consuming and laborious replacement, and affect the normal production of oil wells, so as to reduce wear and prolong service life Effect

Pending Publication Date: 2022-03-11
于海颜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the poor sealing effect of the existing polished rod sealing device, the replacement is time-consuming and laborious, the deviation correction effect is not obvious, the degree of wear of the polished rod and packing is aggravated, the service life is easily shortened, the normal production of the oil well is affected, and the efficiency of the mechanical production system is reduced. Increase the labor intensity of on-site operators, which directly affects production efficiency and economic benefits

Method used

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  • Pumping well polish rod sealing assembly
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  • Pumping well polish rod sealing assembly

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specific Embodiment approach 1

[0041] Specific implementation plan one: combine Figure 1 to Figure 4 As shown, the present invention provides a polished rod sealing assembly for pumping wells, which is characterized in that it includes:

[0042] The eccentric flange 1, the lower end of the eccentric flange 1 is used to connect with the oil pumping wellhead, the eccentric flange 1 is sleeved on the polished rod 20, and the eccentric flange 1 and the polished rod 20 are not coaxially arranged ;

[0043] The main body 3 of the deviation adjustment cavity is sleeved on the polished rod 20, and the eccentric flange 1 and the main body 3 of the deviation adjustment cavity are connected through the lower body 18 of the deviation adjustment cavity and the upper body 17 of the deviation adjustment cavity;

[0044] The seal 4 of the sealer sleeved on the polished rod 20, the seal 4 of the sealer is located in the main body 3 of the deviation adjustment cavity;

[0045] The stuffing chamber 5 sleeved on the polishe...

specific Embodiment approach 2

[0051] Specific implementation plan two: combine figure 1 As shown, it also includes a casing 26, the casing 26 is sleeved on the polished rod 20, the eccentric flange 1, the main body 3 of the deviation adjustment cavity, the lower body 18 of the deviation adjustment cavity, the upper body 17 of the deviation adjustment cavity, the well sealing The device seal 4, the stuffing cavity 5, the centralizing sleeve 7, the split-type conical seal 14 and the split-type conical sealing cap 8 are sequentially socketed on the casing 26. The casing 26 is used to protect the polished rod 20. The outer surface has a high degree of smoothness, high hardness, strong corrosion resistance, and small frictional resistance, which can increase production, save money, and have environmental protection effects. It can prolong the service life of the polished rod 20 and avoid frequent replacement of seals. Assembly, effectively reducing the labor intensity of the staff. The other combinations and c...

specific Embodiment approach 3

[0052] Specific implementation plan three: combination figure 1 As shown, the outer wall of the casing 26 is provided with an industrial hard chrome layer with a thickness of 0.03-0.08 mm, which can resist corrosion and reduce frictional resistance, and can effectively protect the polished rod 20 . The other combinations and connections of this embodiment are the same as those of the second embodiment.

[0053] Specific implementation plan four: combination figure 1 As shown, the gap between the polished rod 20 and the sleeve 26 is 1-3 mm, and the wall thickness of the sleeve 26 is 2-3 mm. The gap between the polished rod 20 and the sleeve 26 and the sleeve can be adjusted according to actual application conditions. The thickness of the pipe wall of the pipe 26 can adjust the length and diameter of the sleeve pipe 26 according to the stroke length of the pumping well and the diameter of the polished rod 20 . The other combinations and connections of this embodiment are the s...

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Abstract

The invention provides a pumping well polish rod sealing assembly, and belongs to the technical field of pumping well polish rod sealing. The problems that an existing polish rod sealing device is poor in sealing effect, time-consuming and labor-consuming to replace, poor in deviation rectifying effect, low in mechanical mining system efficiency and high in labor intensity, and the service life is affected are solved. Comprising an eccentric flange plate, a deviation adjusting cavity body, a blowout preventer seal, a filler cavity, a split type conical seal and a split type conical sealing cap which are sequentially connected to a polish rod in a sleeving mode, the lower end of the filler cavity is connected with the inner wall of the deviation adjusting cavity body through threads, and the split type conical seal comprises a split type conical sealing protrusion and a split type conical sealing concave which are connected in a clamped mode. A plurality of grooves are formed in the inner wall, and the split type conical sealing cap is connected with the outer wall of the packing cavity and can move in the axial direction of the packing cavity. The packing cavity and the split type conical sealing cap are axially compressed or loosened, the effect of improving the sealing effect is achieved during compression, parts can be replaced during loosening, simpleness and rapidness are achieved, the labor intensity is effectively reduced, and good economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of sealing devices for oil pumping well polished rods, in particular to a sealing assembly for oil pumping well polished rods. Background technique [0002] With the discovery of petroleum resources, petroleum energy is gradually expanding the scope of exploitation. At the same time, oil exploitation technology is constantly being updated and iterated. Existing oil exploitation equipment is in various forms, and oil wells are mainly used for exploitation. According to statistics, oil rod oil wells exploit oil fields. Occupying a large proportion of mechanical oil production, the use of wellhead polished rod sealing devices in oil rod oil well production equipment is even higher. [0003] The pumping unit is the main surface equipment in the pumping unit-deep well pump pumping system. The beam pumping unit is mainly composed of four major parts: beam, connecting rod, crank mechanism, reduction box, power equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03E21B17/10
CPCE21B33/03E21B17/1071E21B17/1057
Inventor 于海颜
Owner 于海颜
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