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Polished Rod Sealer

A polished rod sealer and polished rod technology, used in sealing/isolation, wellbore/well components, earth-moving drilling, etc., can solve problems such as inability to replace packing under pressure, and achieve the effect of ensuring safety and improving production efficiency

Active Publication Date: 2018-07-13
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a polished rod sealer to solve the problem that the polished rod sealer in the prior art cannot replace the packing under pressure

Method used

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  • Polished Rod Sealer

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Embodiment Construction

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0039] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0040] In order to solve the problem that the polished rod sealer in the prior art cannot replace the packing under pressure, the present invention provides a polished rod sealer.

[0041] Such as figure 1 As shown, the polished rod sealer includes a packing sealing box 10, a packing 20, an adjustment member and a static sealing part. The packing 20 is arranged in the packing sealing box 10; the static seal...

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Abstract

The invention provides a polished rod sealer, comprising: a packing sealing box; a packing, the packing is arranged in the packing sealing box; Adjust the degree of tightness between the static seal and the polished rod. The static seal has a tight position and a loose position. When the static seal is in the tight position, the static seal holds the polished rod tightly. When the static seal is in the loose position, the There is a gap between the sealing part and the polished rod. Due to the static sealing part, when the packing needs to be replaced, it is only necessary to seal the polished rod with the static sealing part, and the pressure can be cut off at the static sealing part, thus ensuring that the staff can replace the packing under pressure , thereby ensuring the safety of oil production operations and improving the production efficiency of oil wells.

Description

technical field [0001] The invention relates to the technical field of oil production equipment, and more particularly, to a polished rod sealer. Background technique [0002] At present, the polished rod sealer of the thermal recovery pumping well comprises a packing and a packing sealing box, and the packing is arranged inside the packing sealing box. In the steam injection thermal recovery process, high temperature and high pressure accelerate the aging speed of the packing, which may easily lead to the misalignment of the polished rod and the packing during the oil pumping process, causing partial wear of the packing, resulting in a short service life of the packing, and resulting in the sealing of the polished rod sealer. Performance drops. Therefore, the packing needs to be replaced frequently during use. [0003] When replacing the packing, in order to ensure safety and avoid leakage, it is necessary to wait until the wellhead temperature of the oil well drops to no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03
Inventor 魏新春丛培臻王建国鲜菊童玉宝周晓义阿里木江·阿不拉关智勇王美成季旭东张绍辰
Owner PETROCHINA CO LTD