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Tool for repairing oil-water well inward concave sleeve

A technology for oil-water wells and casings, which is applied in wellbore/well parts, earthwork drilling and production, etc. It can solve the problems of time-consuming, laborious and cumbersome operation process, and achieve the effect of convenient operation process, low cost and smooth repair

Active Publication Date: 2015-07-15
CHENGDU ZHIRONG ZHICHUANG INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of cumbersome, time-consuming and labor-intensive operation when repairing concave deformed casings in oil-water wells, and to provide a tool for repairing concave casings in oil-water wells that is easy to implement and easy to operate

Method used

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  • Tool for repairing oil-water well inward concave sleeve
  • Tool for repairing oil-water well inward concave sleeve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] like figure 1 and figure 2 As shown, the tooling used to repair the concave casing of oil and water wells includes the main pipe 1, the first expansion section, the positioning pipe 6, the second expansion section and the head 5 connected in sequence from top to bottom, wherein the inner diameter of the main pipe 1 is about It is smaller than the inner diameter of the casing, and ensures that there is no friction when the main pipe 1 is embedded in the casing. The main pipe 1, the first expansion section, the positioning pipe 6, the second expansion section and the head 5 integrally form a pipe body with an upper end open and a lower end sealed. The first expansion section is the third expansion tube 9, the third expansion tube 9 is preferably made of rubber, and the side wall of the third expansion tube 9 is composed of a plurality of outer convex arc walls 91 and a plurality of inner concave arc walls 92 annularly spliced. , wherein, any one of the multiple convex ...

Embodiment 2

[0023] The main difference between this embodiment and Embodiment 1 is that this embodiment further limits the structure of the head 5 in Embodiment 1: the head 5 in this embodiment includes a guide tube 51 and a lower sealing plate 52, and the lower sealing plate 52 The plate 52 closes the opening at the lower end of the guide pipe 51 , and the second expansion pipe 3 of the second expansion section is connected to the head 5 by being connected to the guide pipe 51 . Wherein, both the guide pipe 51 and the lower sealing plate 52 are preferably made of stainless steel. In order to facilitate placing the second expansion section in the concave deformation of the sleeve, the inner diameter of the guide tube 51 is smaller than the inner diameter of the main pipe 1, and the inner diameter of the connecting pipe 4 is smaller than the inner diameter of the guide tube 51; in order to facilitate placing the first expansion section in the casing In the concave deformation part, the inn...

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Abstract

The invention discloses a tool for repairing an oil-water well inward concave sleeve. The tool comprises a main pipe (1), a first expansion section, a locating pipe (6), a second expansion section and a seal head (5), wherein the main pipe (1), the first expansion section, the locating pipe (6), the second expansion section and the seal head (5) are successively connected from top to bottom, the first expansion section is a third expansion pipe (9), and the side wall of the third expansion pipe (9) is formed by a plurality of outward protruded arc walls (91) and a plurality of inward concave arc walls (92) in an annular split joint mode. The second expansion section comprises a first expansion pipe (2), a connection pipe (4) and a second expansion pipe (3), wherein the first expansion pipe (2), the connection pipe (4) and the second expansion pipe (3) are successively connected from top to bottom. The tool utilizing the structure is simple in integral structure and convenient to implement. When the tool is applied, the inward concave deformed part of the sleeve is primarily repaired through the second expansion section, the inward concave deformed part of the sleeve is secondarily repaired through the first expansion section, operation is convenient and rapid, time and labor are saved, and smoothness of the inner wall of the sleeve is guaranteed after repairing.

Description

technical field [0001] The invention relates to a maintenance machine in the field of oil exploitation, in particular to a tool for repairing the inner concave casing of an oil-water well. Background technique [0002] Oil and water well casings often have concave deformation due to crustal movement or improper operation. The concave and deformed casing prevents oil extraction equipment from entering the well, which will affect the normal production of oil and water wells, and may even cause oil and water wells to stop production. In order to improve the utilization rate of oil-water wells and increase oil production, it is particularly important to repair the concave deformation of the casing. However, the oil-water well has a certain depth, and it is difficult to repair the concave deformation of the casing. The operation process is cumbersome, time-consuming and labor-intensive, and the cost is high. Contents of the invention [0003] The purpose of the present inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B29/10
Inventor 贺昶明
Owner CHENGDU ZHIRONG ZHICHUANG INTPROP MANAGEMENT CO LTD
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