Downhole scraping and/or brushing tool and related methods

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 section of casing with a downhole tool, as herein disclosed.

1 . A wellbore cleaning tool comprising:
 a mandrel, said mandrel comprising;   at least a first insert with a passageway therethrough;   at least a second insert; and,   a housing portion,   wherein at least said first insert comprises a spring loaded brush insert with a passageway therethrough, wherein said spring loaded brush insert is biased outwardly with a biasing member from said mandrel, and further wherein said first insert and said second insert are slidingly received within a slot on a first mounting portion on said mandrel and a slot on a second mounting portion on said mandrel, from the outermost respective ends, and wherein said first insert is secured by a first retaining sleeve and said second insert is secured by a second retaining sleeve.   
     
     
         2 . The wellbore cleaning tool of  claim 1 , further comprising a third mounting portion. 
     
     
         3 . The wellbore cleaning tool of  claim 1 , further comprising a second tool. 
     
     
         4 . The wellbore cleaning tool of  claim 1 , wherein said second insert is a scraper insert. 
     
     
         5 . The wellbore cleaning tool of  claim 1 , wherein said spring loaded brush insert is selected from a spring loaded pod and a spring loaded wire brush insert. 
     
     
         6 . The wellbore cleaning tool of  claim 4 , wherein said scraper insert is capable of scraping a surface of said wellbore as the tool is one or more of raised, lowered and/or rotated in said wellbore. 
     
     
         7 . The wellbore cleaning tool of  claim 1 , wherein said clamp portion is selected from at least one of a magnetic portion, a tru-gauge portion, and a blanking portion. 
     
     
         8 . The wellbore cleaning tool of  claim 1 , wherein said spring loaded brush insert is a spring loaded pod comprising at least one wire filament secured at least partially within said spring loaded pod. 
     
     
         9 . A method of cleaning a wellbore comprising the steps of:
 lowering, raising or rotating a drill string comprising at least one springy loaded wellbore cleaning tool into a wellbore to at least one section of casing that needs cleaning, said tool comprising at least one brush insert comprising a spring loaded brush insert selected from a spring loaded pod and a spring loaded wire brush insert; and,   cleaning said at least one section by rotating said drill string, whereby said spring loaded pod is biased outwardly from the bottom portion of the blade towards said at least one section of casing wherein said at least one section of casing is brushed.   
     
     
         10 . The method of  claim 9 , further comprising the step of scraping said at least one section of casing. 
     
     
         11 . The method of  claim 9 , further comprising the step of magnetically attracting metallic debris within said at least one section of casing. 
     
     
         12 . The method of  claim 9 , further comprising the step of centering said tool within said wellbore. 
     
     
         13 . A spring loaded wellbore cleaning tool comprising:
 a mandrel;   at least a first insert with a passageway therethrough;   at least a second insert; and,   a mid housing portion,   wherein said first insert is selected from at least one of a scraper insert for scraping a surface of at least one section of casing and at least one spring loaded brush insert selected from a spring loaded pod and a spring loaded wire brush insert, and further wherein said first insert and said second insert are slidingly received within a slot on a first mounting portion on said mandrel and a slot on a second mounting portion on said mandrel, from the outermost respective ends, and wherein said first insert is secured by a first retaining sleeve and said second insert is secured by a second retaining sleeve, wherein said spring loaded brush insert is biased against the mandrel.   
     
     
         14 . The wellbore cleaning tool of  claim 13 , further comprising a third mounting portion. 
     
     
         15 . The wellbore cleaning tool of  claim 13 , further comprising a second tool. 
     
     
         16 . A spring loaded brush insert comprising:
 at least one individually spring loaded pod comprising a body with at least one passageway and at least one wire filament secured at least partially within said body and extending through said passageway; and,   at least one insert member with at least one passageway extending therethrough wherein said pod is biased outwardly from said mandrel and further wherein said at least one wire filament is capable of contacting a surface of a casing.   
     
     
         17 . The brush insert of  claim 16 , further comprising a mandrel connected to a drill string; a housing portion, wherein said spring loaded brush insert is slidingly received within a slot on a first mounting portion on said mandrel. 
     
     
         18 . The brush insert of  claim 16 , wherein said brush insert is slidingly received from the outermost end. 
     
     
         19 . The brush insert of  claim 16 , wherein said brush insert is secured by a retaining sleeve. 
     
     
         20 . The brush insert of  claim 16 , wherein said at least one pod and said at least one biased member are associated with one another. 
     
     
         21 . The brush insert of  claim 16 , further comprising multiple pods. 
     
     
         22 . The brush insert of  claim 16 , wherein said brush insert is tongued. 
     
     
         23 . The wellbore cleaning tool of  claim 1 , wherein said wellbore cleaning tool is connected to a drill string. 
     
     
         24 . The wellbore cleaning tool of  claim 13 , wherein said wellbore cleaning tool is connected to a drill string.