A fast millable slip assembly for downhole tools

A downhole tool and fast technology, applied in wellbore/well components, sealing/packaging, earth-moving drilling, etc. The effect of efficiency

Active Publication Date: 2022-07-19
PETROCHINA CO LTD +1
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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 that the integral slips and block slips used on ordinary bridge plugs are not easy to grind and mill, and to provide a fast grinding tool for downhole tools with simple structure, safety and reliability, and fast grinding and milling. Milling slip components

Method used

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  • A fast millable slip assembly for downhole tools
  • A fast millable slip assembly for downhole tools
  • A fast millable slip assembly for downhole tools

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specific Embodiment approach

[0020] DETAILED DESCRIPTION

[0021] Quick-milling slip assemblies for the lower tool include:

[0022] Cone 1, the cone 1 is used to expand and support the slip base 3 when setting, and at the same time limit the circumferential displacement of the slip base 3; the main body assembly, the main body assembly is inserted and installed between the cone 1 and the italic body 5 and the italic 5, the italic 5 is used to support the tail of the slip base 3;

[0023] The main assembly includes a fixing ring 2 , a slip base 3 , and a slip 4 ; the fixing ring 2 hoops the slip base 3 into a circle, and the slip 4 is inserted on the upper surface of the slip base 3 .

[0024] The cone 1 is inserted into the slip base 3; the fixing ring 2 hoops the eight slip bases 3 into a circle, the slip 4 is inserted on the outer surface of the slip base 3, and the tail of the slip base 3 is limited to the upper part of the italic 5. bit connection.

[0025] The tail part of the slip base 3 is conn...

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Abstract

The invention relates to the field of oilfield oil production engineering, and belongs to a slip component which can be quickly milled and milled for downhole tools. The invention solves the problem that the integral slips and segmented slips used on common bridge plugs are not easy to be milled, and includes: a cone (1), a main assembly and an italic body (5). Expand and support the slip base (3) during setting, while limiting the circumferential displacement of the slip base (3); the main body assembly is inserted and installed between the cone (1) and the italic body (5); the italic body (5) It is used to support the tail of the slip base (3); the main body assembly includes a fixing ring (2), a slip base (3), and a slip sheet (4); wherein the fixing ring (2) attaches the slip base ( 3) Hoop into a circle, and insert the slip sheet (4) on the upper surface of the slip base (3). The invention has the advantages of simple structure, safety and reliability, rapid milling and small volume of the remaining part of the slip base after milling.

Description

technical field [0001] The invention relates to the field of oilfield oil production engineering, and belongs to a fast milling slip assembly for downhole tools. Background technique [0002] At present, the commonly used slip modules for bridge plug tools are integral slip modules or segmented slip modules. In the integrated slip module, there is no anti-rotation measure between the slip base and the conical cone, so it is difficult to mill quickly. Unblock. In the block-type slip module, there is a short inclined surface at the front of the slip base to cooperate with the cone to prevent rotation, but there is a long straight surface at the tail. When milling, only the overlapping part of the slip base and the inclined surface of the cone can be ground off. , the volume of the remaining straight face part of the belt is large, which affects the milling efficiency. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to solve the problem that the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/129E21B29/00E21B33/134
CPCE21B33/129E21B29/00E21B33/134
Inventor 蔡萌林忠超赵骊川孙江姚飞何庆刘云许浩赵旭阳高飞张平安王鹏程韩小辉
Owner PETROCHINA CO LTD
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