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High-efficiency and environmental protection oil well wellhead sealing device

A sealing device and an environmentally friendly technology, which is applied in sealing/packing, wellbore/well parts, earthwork drilling and production, etc. It can solve the problems of easy damage of packing and sealing parts, low production efficiency, inconvenient disassembly and maintenance, etc.

Active Publication Date: 2018-04-17
克拉玛依市三达有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a high-efficiency and environment-friendly oil well wellhead sealing device, which overcomes the deficiencies of the prior art above, and can effectively solve the problem that existing wellhead sealing devices are easy to damage the packing and seals, and are prone to oil leakage and environmental pollution, and even The phenomenon that the overall equipment cannot continue to be used, the disassembly and maintenance are inconvenient, time-consuming and laborious, the production efficiency is low, it will cause waste, and there are potential safety hazards

Method used

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  • High-efficiency and environmental protection oil well wellhead sealing device
  • High-efficiency and environmental protection oil well wellhead sealing device
  • High-efficiency and environmental protection oil well wellhead sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment one: as attached figure 1 As shown, the high-efficiency and environment-friendly oil well wellhead sealing device includes a blowout prevention device, a packing gland 1, a packing barrel 2 and a base 3, and the blowout prevention device includes a blowout prevention casing 4, a blowout prevention sealing assembly and a blowout prevention ball 5; The spray housing 4, the packing gland 1, the packing tube 2 and the base 3 are fixedly installed together from top to bottom. The lower support ring seat is installed under the lower support ring seat with the lower packing sealing ring sleeve whose top surface is against the lower support ring seat. The upper inner side of the packing gland 1 is fixed with the upper support ring seat, which is installed above the upper support ring There is an upper packing sealing ring sleeve with a bottom seat on the upper support ring seat, pressurized through holes 7 are distributed along the circumference intervals on the bott...

Embodiment 2

[0031] Embodiment two: as attached figure 2 , 5 , 6, and 7, on the basis of Embodiment 1, a well sealing device is also included, and a well sealing device is provided between the packing tube 2 and the base 3, and the well sealing device includes a well sealing cylinder body 12, a well sealing rubber ring 13 , sealing gland 14, screw gland 15, rotating worm gear 16, worm screw 17 and turbine gland 18, the inner side of the upper end of the sealing casing 12 and the outer side of the lower end of the packing casing 2 are fixedly installed together through threaded connection, the sealing casing The outer side of the lower end of 12 and the inner side of the upper end of the base 3 are fixedly installed together through threaded connection; a sealing gland 14 is fixedly installed on the inner side of the lower end of the sealing cylinder 12, and the inner side of the sealing cylinder 12 corresponding to the position above the sealing gland 14 is fixed. There is an inner ring ...

Embodiment 3

[0032] Embodiment three: as attached image 3 As shown, on the basis of Embodiment 1, a centering plate 23 and a centering gland are also included, and a centering plate 23 is provided between the packing tube 2 and the base 3, and the middle part of the centering plate 23 is provided with a diameter smaller than a seat The disc body through hole 25 of the body through hole 6, the inner side of the upper end of the centering disc 23 is fixedly installed together with the outer side of the lower end of the packing tube 2 through threaded connection, and the outer side of the lower end of the centering disc 23 is provided with an outer seat on the base 3. The ring platform 26; the centering gland includes a centering pressure sleeve 27 and a limit ring cover 28, and the centering pressure sleeve 27 is set on the outside of the outer ring platform 26, and the inner side of the lower end of the centering pressure sleeve 27 and the outer side of the upper end of the base 3 Fixedly ...

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Abstract

The invention relates to the technical field of oil field wellhead equipment and provides an efficient environmentally-friendly oil-well wellhead sealing device. The device comprises a spraying preventing device body, a packing pressing sleeve, a packing cylinder and a base; a spraying preventing shell, the packing pressing sleeve, the packing cylinder and the base are sequentially and fixedly mounted together from top to bottom; a seat body through hole is formed in the middle of the base; a lower supporting ring seat is fixed to the inner side of the lower portion of the packing cylinder; a lower packing sealing ring sleeve with the top face abutting against the lower supporting ring seat is mounted on the lower portion of the lower supporting ring seat; an upper supporting ring seat is fixed to the inner side of the upper portion of the packing pressing sleeve; and an upper packing sealing ring sleeve with the bottom face sitting on the upper supporting ring seat is mounted on the upper portion of the upper supporting ring seat. According to the efficient environmentally-friendly oil-well wellhead sealing device, the phenomena of oil leakage and environment pollution can be avoided, normal work of whole equipment is ensured, shutting-down and dismounting are not needed in dismounting, mounting and maintaining, and only a pipe plug needs to be opened or closed; oil extraction breaking-off is avoided, and production efficiency is ensured; and meanwhile waste can further be prevented, and the characteristics of being efficient, convenient, rapid, capable of saving time and labor and high in safety efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of oilfield wellhead equipment, and is an efficient and environment-friendly oil well wellhead sealing device. Background technique [0002] Most of the existing wellhead sealing devices for oil wells are mainly polished rod integral sealers. The seal often adopts an I-shaped structure. During installation, the packing needs to be tightened laterally with the ejector screw. However, in the process, due to oil pumping It is difficult for the machine and the wellhead to be completely concentric, which makes its installation and alignment more difficult. [0003] When it is used, it is also easy to cause eccentric wear of the packing or damage to the sealing parts, causing oil leakage and environmental pollution, and even making the overall equipment unusable. Therefore, the packing and other sealing parts need to be replaced regularly. When the packing is replaced or added, the well needs to be shut down, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/06
CPCE21B33/06
Inventor 刘福军陆利辉苏红江侯凌姜璐张耀巍闫磊鹏薛晓燕于伟张克印王风海杜鹏付雪晨陈玉刚代军顾三虎陈勇李庆余李占稳胥伟
Owner 克拉玛依市三达有限责任公司
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