Improved downhole scraping and/or brushing tool and related...

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 37/00 (2006.01) E21B 37/02 (2006.01)

Patent

CA 2672627

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.

L'invention concerne un outil de fond à ressort amélioré et optimisé destiné à nettoyer les trous de revêtement de puits comprenant un mandrin, au moins un premier insert ayant un passage au travers, et au moins un second insert, où à la fois le premier insert et le second insert sont choisis à partir d'au moins l'un d'un insert de racloir à ressort et d'au moins un insert de brosse à fil, et où le premier insert et le second insert sont également reçus de manière coulissante dans une fente sur une première portion de montage sur le mandrin et une fente sur une seconde portion de montage sur le mandrin, à partir des extrémités respectives les plus externes, et où le premier insert est fixé par un premier manchon de retenue et le second insert est fixé par un second manchon de retenue. Est également décrit un procédé unique de nettoyage d'une section de revêtement avec un outil de fond, comme décrit ici.

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