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Air bag type expansion pipe

An expandable tube and airbag technology, applied in wellbore/well components, earth-moving drilling, etc., can solve the problems that the reinforced casing is difficult to meet the needs of different environments, and the environmental conditions of the reinforced casing are greatly affected, so as to save costs. , saving construction period, simple operation effect

Pending Publication Date: 2019-12-10
YANGTZE UNIVERSITY
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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 overcome the above-mentioned technical deficiencies and provide a balloon-type expansion tube, which solves the problem that the reinforcing sleeve in the prior art is greatly affected by environmental conditions, and the same type of reinforcing sleeve is difficult to meet the needs of different environments

Method used

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Embodiment Construction

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0013] Such as figure 1 As shown, the present invention provides a balloon-type expansion tube, which includes an expansion tube body 100 and an expansion mechanism 200. During implementation, the expansion tube body 100 is hoisted to the casing that needs to be corrected, and the casing here is used for downhole operations. The tools used and the casing are deformed. At this time, the balloon type expansion tube is needed to correct the casing. The expansion ...

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Abstract

The invention discloses an air bag type expansion pipe. The air bag type expansion pipe comprises an expansion pipe body and an expansion mechanism, wherein an expansion cavity is formed in the expansion pipe body, and a cut seam is formed in the outer wall of the expansion pipe body; the expansion mechanism comprises an expansion piece, a pulling part and at least two positioning cross rods, theinflation piece is positioned in the expansion cavity, a inflating cavity is formed in the expansion piece, an air inlet communicating with the inflation cavity is formed in the expansion piece, one end of the expansion piece is connected with the pulling piece, one ends of the positioning cross rods are connected with the expansion piece, and the other ends of the positioning cross rods are clamped in positioning holes formed in the expansion pipe body; and the problems that in the prior art, the influence of the environmental conditions on a reinforcing sleeve is large, and the reinforcing sleeve of the same type cannot easily meet requirements of different environments are solved.

Description

technical field [0001] The invention relates to the technical field of petroleum equipment, in particular to an airbag type expansion tube. Background technique [0002] In the middle and late stages of oilfield development, more and more wells with casing damage will directly affect the normal production of oil and water wells and even lead to the scrapping of oil and water wells. The repair of damaged oil and water well casings is an important part of the oilfield development process. Work. [0003] At present, casing damage treatment mainly adopts shaping, milling, reinforcement, casing removal and other technological means, and casing reinforcement is an important casing damage treatment technology. Several conventional casing reinforcement methods currently used, such as explosion welding and bellows casing reinforcement technology, all have higher requirements on the tightness of the pipe string. The corrugated pipe reinforcement technology uses epoxy glue to bond an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/10
CPCE21B29/10
Inventor 李琦钰白宗玺张瑞达
Owner YANGTZE UNIVERSITY
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