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Tubular cutting device

A technology for cutting devices and pipe fittings, which is applied in the direction of sawing machine devices, metal sawing equipment, wellbore/well parts, etc., can solve problems such as complex design, and achieve reliable cutting process, effective and efficient cutting process

Active Publication Date: 2019-01-11
YTA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these designs are relatively complex

Method used

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  • Tubular cutting device
  • Tubular cutting device
  • Tubular cutting device

Examples

Experimental program
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Embodiment Construction

[0081] refer to figure 1 and figure 2 , the pipe cutting device 20 is formed as a cylindrical elongated rod with a tapered tip 22 . The tubular cutting device 20 is insertable into the tubular structure 10, only partially shown here for clarity. When inserted, the tubular cutting device 20 extends along the interior hollow space 12 of the tubular structure 10 . The tubular structure 10 may be a pipe, such as a steel pipe such as a casing or liner, which may extend vertically and / or horizontally within a wellbore for hydrocarbon exploration.

[0082] The tubular cutting device 20 thus forming a downhole tool includes a device body 24 , a cutting unit 26 , and a drive portion 30 for driving the cutting unit 26 and connecting the device body 24 with the cutting unit 26 . The cutting unit 26 is formed as a cutting head and is positioned at the front of the pipe cutting device 20 . By means of a drive portion 30 rotatably attached to the cutting unit 26 , the cutting unit 26 c...

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Abstract

A tubular cutting device is provided. The device is used for cutting a tubular structure (10) enclosing a hollow space from within the hollow space, wherein the tubular cutting device comprises a device body (24), a cutting unit (26) which is drivable to rotate relative to the device body and a cutting member (40) in the cutting unit which is drivable to rotate relative to the cutting unit, wherein the cutting unit and the cutting member can be driven independently.

Description

technical field [0001] The invention relates to a pipe cutting device for cutting tubular structures. The invention also relates to a cutting method for cutting tubular structures. Background technique [0002] A pipe cutting device is a tool for insertion into a hollow space of a tubular structure in order to cut or sever a pipe from within the hollow space thereof. This method is of interest for cutting tubular structures at their inner surfaces, in particular for severing tubular members that are difficult or inaccessible from the outside. [0003] A typical field of application for pipe cutting devices is oil and gas extraction, where enormous lengths of pipes are used deep underground. Examples are wellbore casing or liner, downhole tubulars, drill pipe, support pipe or any other tubular element introduced into the wellbore. Such tubular members are usually permanently installed on site, eg bonded in place within a borehole, such as a casing. In other instances, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/00
CPCE21B29/005B23D45/128E21B29/002
Inventor W·H·P·M·海杰宁R·B·彼得斯
Owner YTA
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