Wells – Brushing – scraping – cutting or punching-type cleaners – On tubing or casing
Reexamination Certificate
2006-10-26
2008-07-29
Bates, Zakiya W. (Department: 3676)
Wells
Brushing, scraping, cutting or punching-type cleaners
On tubing or casing
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.
Bates Zakiya W.
Hamdeen Incorporated Limited
Ked & Associates LLP
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