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Multi-joint universal sealing device for wellhead of oil well

A sealer, oil well technology, applied in sealing/isolation, wellbore/well components, drilling equipment, etc., can solve the problem of frequent replacement of sealing rings, achieve unaffected sealing effect, avoid oil well polished rod breaking, reduce Effects of replacement and maintenance costs

Inactive Publication Date: 2020-08-28
延长油田股份有限公司定边采油厂
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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 a multi-section universal sealer at the wellhead of an oil well, which solves the problem that the sealing ring at the wellhead of an oil well is easy to be replaced frequently due to wear and tear by setting double balls to adjust the communication

Method used

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  • Multi-joint universal sealing device for wellhead of oil well
  • Multi-joint universal sealing device for wellhead of oil well

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] The multi-section universal sealer at the wellhead of the oil well of the present invention, such as Figure 1-2 As shown, it includes installation in the vertical direction, including the oil seal assembly at the top and the centralization assembly at the bottom; an outer protective sleeve 17 is connected between the oil seal assembly and the centralization assembly at the bottom; a first ball is installed inside the outer protective sleeve 17 component and the second ball component.

[0020] The oil seal assembly includes the top grease nipple 1, the bottom of the grease nipple 1 is connected to the tapered grease chamber wire cover 2, and the grease chamber sealing rubber ring 3 is arranged between the grease nipple 1 and the tapered grease chamber wire cover 2; the tapered grease chamber wire cover 2 Bottom connection seal assembl...

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Abstract

The invention discloses a multi-joint universal sealing device for a wellhead of an oil well. The multi-joint universal sealing device for the wellhead of the oil well is mounted in the vertical direction and comprises an oil sealing component at the top and a strengthening component at the bottom; an outer protective sleeve is connected between the oil sealing component and the bottom strengthening component; and a first spherical component and a second spherical component are mounted in the outer protective sleeve. Eccentric wear of a polished rod is lightened by utilizing the parts, such asa strengthening rubber ring, a strengthening rubber ring box and a strengthening rubber ring pressing sleeve; the increase of the oil well maintenance operation and the production cost caused by theeccentric wear of the polished rod of the wellhead is reduced; the production cost is reduced; and the maintenance free period of the oil well is prolonged.

Description

technical field [0001] The invention belongs to the technical field of oilfield equipment, and in particular relates to a multi-section universal sealer for the wellhead of an oil well. Background technique [0002] The polished rod at the wellhead of the pumping unit needs to be straightened and sealed, which is an essential process in oilfield operations. Since the polished rod and the wellhead are difficult to achieve concentricity and coaxiality, deviations will occur, which will cause eccentric wear and wear the sealing ring. [0003] Phenomena such as eccentric wear, corrosion, and oil leakage at the wellhead of pumping units are common in oilfield development and production. The problem of eccentric wear of polished rods is a difficult technical problem to solve. Wear and tear, due to eccentric wear, corrosion and other phenomena, the frequency of replacement of oil well wellhead seal rings increases, resulting in increased costs, increased workload of personnel, shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03E21B17/10
CPCE21B17/1071E21B33/03
Inventor 张学孙刚张刚王永飞温佳霖
Owner 延长油田股份有限公司定边采油厂
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