A residue-free release mechanism

A release mechanism and no residue technology, applied in the field of downhole tools, well workover, and oil production in oil and gas fields, can solve the problems of increasing the difficulty of milling and prolonging the time of milling, so as to reduce the milling time and avoid the effect of bridge plug falling off

Active Publication Date: 2019-09-10
诺斯石油工具(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this way of throwing away cannot bring out the remaining release ring, which also increases the difficulty of milling and prolongs the time of milling.

Method used

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  • A residue-free release mechanism
  • A residue-free release mechanism
  • A residue-free release mechanism

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0038] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0039] The present invention provides a residue-free release mechanism such as figure 1 shown, including:

[0040] The outer cylinder, one end of which presses the lifting shoulder on the outer surface of the bridge plug, and the other end is connected with the outer cylinder 110 of the setting tool 1;

[0041] The inner cylinder 5 is arranged in the outer cylinder and is slidably connected with the outer cylinder, and one end of the inner cylinder 5 is engaged with one end of the bridge plug; as a preferred method, the One end of the inner cylinder 5 has claws, and the claws a...

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PUM

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Abstract

The invention discloses a no-residue release mechanism. The no-residue release mechanism comprises an outer barrel body, an inner barrel body and a release component; one end of the outer barrel body makes contact with a lifting shoulder on the outer surface of a bridge plug, and the other end of the outer barrel body is connected with an outer barrel of a setting tool; the inner barrel body is arranged in the outer barrel body and is connected with the outer barrel body in a sliding manner, and one end of the inner barrel body is clamped to a center pipe of the bridge plug; one end of the release component is connected with a pulling rod of the setting tool, and the other end of the release component is connected with the other end of the inner barrel body; and the outer barrel of the setting tool is connected with the pulling rod in a sliding manner. According to the no-residue release mechanism, by ingeniously moving the position of a release ring, the no-residue release mechanism is invented, the release ring is made on the release mechanism, and after setting of the bridge plug is completed, the release ring is broken. According to the no-residue release mechanism, the broken release ring can be completely lifted out of a wellbore, it is achieved that well bottom setting is free of metal residues, and the grinding and milling time of the bridge plug is shortened to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of oil recovery and workover in oil and gas fields, in particular to the technical field of downhole tools for downhole operations, and in particular to a non-residue release mechanism. Background technique [0002] The combination technology of fast drilling bridge plug and casing perforation solves the technical problem of staged fracturing under different pressures. Setting of a bridge plug requires a setting tool and this invention relates to a release mechanism connecting the setting tool and the bridge plug. The currently used release methods mainly include setting shear pins, light metal and release rings. However, the shear force value of the setting shear pin is relatively unstable, and it is easy to be sheared in advance or difficult to shear in the end. Residual chips will also affect the later bridge plug grinding and milling work. At present, the structure using release ring or light metal is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B23/00E21B33/134
Inventor 陈虎崔金榜谭福俊王昕宇李建正
Owner 诺斯石油工具(天津)有限公司
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