Metal sealing device

A metal sealing and packing device technology, which is applied in sealing/packing, wellbore/well components, earthwork drilling and production, etc., can solve the problem that the packer cannot meet the high temperature and high pressure operation requirements, and achieve compact structure, easy to use Convenient, reasonable structure and effective

Active Publication Date: 2022-03-04
CNPC XIBU DRILLING ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a metal sealing and sealing device, which overcomes the deficiencies of the prior art and can effectively solve the problem that the existing rubber cartridge packer cannot meet the high temperature and high pressure operation requirements

Method used

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  • Metal sealing device
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Embodiment Construction

[0014] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0015] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of front, rear, top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the description.

[0016] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0017] as attached figure 1 , 2 As shown, the metal sealing device includes a mandrel 1, a lower joint 13, an upper slip 3, an upper cone, a metal sealing cylinder 6, a support sleeve, a lower cone, a lower slip 11 and a connecting sleeve 12, and the mandrel 1. The outer ...

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Abstract

The invention relates to the technical field of downhole packers, and relates to a metal seal packing device. Its mandrel, lower joint, upper slip, upper cone, metal sealing cylinder, support sleeve, lower cone, lower slip and connection Sleeve, the outer side of the lower end of the mandrel and the inner side of the upper end of the lower joint are fixedly installed together, the outer side of the upper part of the mandrel is provided with a limit ring platform, the outer side of the upper part of the lower joint is provided with a connecting sleeve whose upper end is located outside the lower part of the mandrel, and the inner side of the upper end of the connecting sleeve is provided with a sealing ring There is a pressure holding chamber between the lower end of the sealing ring table and the upper end of the lower joint, and a pressure holding hole connecting inside and outside is provided on the outer side of the mandrel corresponding to the position of the pressure holding chamber. The invention has a reasonable and compact structure and is easy to use. By installing a metal sealing cylinder instead of the rubber cylinder packer, it can avoid the loss of sealing performance of the rubber cylinder caused by stress relaxation of the rubber cylinder under high temperature and high pressure environment, and has high temperature resistance, high pressure resistance and sealing effect. nice features.

Description

technical field [0001] The invention relates to the technical field of downhole packers, and relates to a metal sealing packer. Background technique [0002] With the continuous deepening of oilfield exploration, searching for oil and gas resources from shallow to deep layers is an important material basis for the sustained high production of oilfields. The complexity of deep reservoir lithology puts forward higher requirements for oil recovery technology. As the main tool of layered oil production, packer is widely used in oil production engineering. With the deepening of the development well, the temperature is getting higher and higher (>150°C), and the traditional packer sealing rubber cylinder is made of rubber, which is prone to aging under high temperature and high pressure conditions, resulting in stress relaxation of the sealing rubber cylinder components, etc. Phenomenon, causing the packer to lose seal downhole, seriously affecting the performance and life of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/12E21B33/129
CPCE21B33/1212E21B33/129
Inventor 张胜鹏宋朝晖乔东宇谢天涯王庆国张昕李富强王飞跃
Owner CNPC XIBU DRILLING ENG
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