Metal wrapped-type high-temperature sealing structure and manufacturing method thereof

Abstract

The invention discloses a metal wrapped-type high-temperature sealing structure and a manufacturing method thereof, wherein the metal wrapped-type high-temperature sealing structure is composed of at least two metal wrapped-type protection structures and a sealing element in an overlapping mode, wherein the sealing element is arranged between the metal wrapped-type protection structures; each metal wrapped-type protection structure comprises a metal wrapped layer and an internal filling ring; each metal wrapped layer is provided with a metal bowl-shaped sleeve ring which is provided with an inward opening; the metal wrapped layers wrap the internal filling rings; and the metal wrapped-type protection structures can prevent both sides of the sealing element from raising up and are resistant against abrasion and water flow erosion.

Description

technical field [0001] The invention relates to a sealing structure, in particular to a metal-wrapped high-temperature sealing structure capable of effectively preventing both sides of the sealing member from protruding, and resistant to friction and water erosion, and a manufacturing method thereof. Background technique [0002] Due to the steam flooding packer, during the field use, the seal is damaged due to friction with the dead oil on the well wall and the pipe string creeps during the steam injection process, resulting in wear and gas erosion of the seal. Since the conventional high-temperature seal has no external protection , during the process of running the pipe string into the wellbore, the seal is easily blocked and scratched by the solidified ultra-heavy oil on the casing wall, thus affecting its sealing effect. With the increase of steam injection time, in the long-term high-temperature and high-pressure environment, due to the occurrence of problems such as w...

AI Technical Summary

Problems solved by technology

[0002] Due to the steam flooding packer, during the field use, the seal is damaged due to friction with the dead oil on the well wall and the pipe string creeps during the steam injection process, resulting in wear and gas erosion of the seal. Since the conventional high-temperature seal has no external protection , during the process of running the pipe string into the wellbore, the seal is easily blocked and scratched by the solidified ultra-heavy oil on the casing wall, thus affecting its sealing effect

With the increase of steam injection time, in the long-term high-temperature and high-pressure environment, due to the occurrence of problems such as weakened internal support and serious carbonization of the seal, it cannot maintain its durable and reliable sealing performance; due to the relatively low erosion resistance of conventional seals Poor, can not meet the actual production needs of long-term steam injection and intermittent steam injection

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