Downhole tool

Wells – Brushing – scraping – cutting or punching-type cleaners – On tubing or casing

Reexamination Certificate

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Details

C166S177300, C166S241600

Reexamination Certificate

active

07404436

ABSTRACT:
A downhole tool for conditioning a casing or liner. The tool includes blades having a circumferential peripheral edge for 360 degree contact with the casing or liner and are formed from a composite material which comprises a polymeric fiber. Such polymeric fibers include Kevlar®, Twaron®, Dyneema®, Spectra® and Diolen®. Bypass channels for fluid flow past the tool are provided in either the tool body or the blades.

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“What is Kevlar,” (May 30, 2006), http://www.dupont.com/kevlar/whatiskevlar/whatiskevlar—main.html, 2 pages.

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