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Slip assembly capable of being rapidly milled for downhole tool

A technology of downhole tools and components, which is applied in wellbore/well parts, sealing/packing, earthwork drilling, etc. It can solve the problems that integral slips and segmented slips are not easy to grind and mill, and achieve easy mass production Assembling, anti-collision, and simple structure

Active Publication Date: 2020-12-04
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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  • Slip assembly capable of being rapidly milled for downhole tool
  • Slip assembly capable of being rapidly milled for downhole tool
  • Slip assembly capable of being rapidly milled for downhole tool

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specific Embodiment approach

[0020] Specific embodiments: the present invention will be described in further detail below in conjunction with the accompanying drawings, a

[0021] The rapid millable slip assembly for the lower tool includes:

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

[0023] The main body assembly includes a fixed ring 2 , a slip base 3 , and a slip piece 4 ; the fixed ring 2 hoops the slip base 3 into a circle, and the slip piece 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, and the outer surface of the slip base 3 is inserted with a slip ...

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Abstract

The invention relates to the field of oil field oil production engineering, and belongs to a slip assembly capable of being rapidly milled for a downhole tool. The slip assembly solves the problem that an integral slip and a block type slip used on a common bridge are not easy to mill. The slip assembly comprises a cone (1), a main body assembly and an inclined body (5), wherein the cone (1) is used for expanding and supporting a slip base body (3) during setting, and limiting the circumferential displacement of the slip base body (3); the main body assembly is inserted between the cone (1) and the inclined body (5); the inclined body (5) is used for supporting the tail part of the slip base body (3); the main body assembly comprises a fixing ring (2), the slip base body (3) and a slip piece (4); and the fixing ring (2) hoops the slip base body (3) into a circle, and the slip piece (4) is inserted into the upper surface of the slip base body (3). The slip assembly has the advantages ofbeing simple in structure, safe, reliable, capable of being rapidly milled, small in size of the rest part of the slip base body after milling and the like.

Description

technical field [0001] The invention relates to the field of oil production engineering in oilfields, and belongs to a fast milling slip assembly for downhole tools. Background technique [0002] At present, the slip modules commonly used in bridge plug tools are integral slip modules or block slip modules. In the integral slip module, there is no anti-rotation measure between the slip base body and the conical cone, and it is difficult to quickly mill. unblock. In the block type slip module, there is a short slope 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, so only the overlapping part of the slip base and the cone slope can be ground off during milling. , the volume of the remaining straight-facing part is larger, which affects the milling efficiency. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the integral slips and block slips u...

Claims

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Application Information

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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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