E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 37/00 (2006.01) E21B 37/02 (2006.01)
Patent
CA 2380245
A down hole cleaning assembly and method of cleaning a tubular. Generally, the down hole assembly (2) is connected to a work string concentrically located within a casing string. In one embodiment, the down hole assembly (2) comprises a mandrel (16) operatively connected to the work string, with the mandrel (16) having an opening (22, 24) therein. A pad member (38, 40) is received within the opening (22, 24), with the pad member (38, 40) having a groove therein. Also provided is a wire brush member (42, 44), operatively positioned within the groove of the pad member (38, 40), for cleaning the internal diameter of the casing string. The pad member (38,40) and groove may be helical, the wire brush member (42, 44) positioned within the groove. The down hole assembly (2) further comprises a biasing member (46, 48), operatively positioned between the mandrel (16) and the pad member (38, 40), adapted for biasing the wire brush means (42, 44) against the inner diameter of the well bore.
L'invention concerne un ensemble nettoyeur fond de trou et un procédé de nettoyage de tubulaires. En général, l'ensemble fond de trou (2) est relié à une colonne de travail placée de manière concentrique à l'intérieur d'une colonne de tubage. Dans un mode de réalisation, l'ensemble fond de trou (2) comprend un mandrin (16) relié fonctionnel à la colonne de travail et comportant une ouverture (22, 24). Un élément de tampon (38, 40), logé à l'intérieur de l'ouverture (22, 24), comporte une rainure. L'invention concerne également un élément de brosse métallique (42, 44) placé fonctionnel dans de la rainure de l'élément de tampon (38, 40) servant à nettoyer le diamètre intérieur de la colonne de tubage. L'élément de tampon (38, 40) et la rainure peuvent être de forme hélicoïdale, l'élément de brosse métallique (42, 44) étant placé à l'intérieur de la rainure. En outre, l'ensemble fond de trou est constitué d'un élément de sollicitation (46, 48), placé fonctionnel entre le mandrin (16) et l'élément de tampon (38, 40), et conçu pour pousser la brosse métallique (42, 44) contre le diamètre intérieur du trou de forage.
Global Completion Services Inc.
M-I L.l.c.
Rogers Law Office
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