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(11)    Patent No :    AP 2594   
(21)    Application No :    AP/P/2009/004911   
(22)    Filing Date :    12.12.2007   
(24)    Date of Grant &    08.02.2013   
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
US    60/869,712    12.12.2006

(84)    Designated State

BW    GM    GH    KE    LS    MW  MZ   NA   SL
SD    SZ    T Z    UG    ZM    ZW

(73) Applicant(s)


Broussard, Louisiana 70518,
United States of America
(72) Inventors

KNOBLOCH Benton T, United States of America

ROY Todd J, United States of America

(74) Representative


(51)  International  Classification   E05B 65/06 (2006.01)    E21B 37/02 (2006.01)

(54)    Title

Improved downhole scraping and/or brushing tool and related methods

(57)    Abstract

An improved and enhanced spring loaded downhole tool for cleaning well casing bores comprising a mandrel, at least a first insert having a passageway

therethrough, and at least a second insert, wherein both the first insert and the second insert are selected from at least one of a spring loaded scraper insert and at least one wire brush insert, and further wherein the first insert and the second insert are slidingly received within a slot on a first mounting portion on the mandrel and a slot on a second mounting portion on the mandrel, from the outermost respective ends, and wherein the first insert is secured by a first retaining sleeve and the second insert is secured by a second retaining sleeve. Also disclosed is a unique method for cleaning a

(56)    Documents Cited :    US-2006207796 A1    US-4479538 A


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