Devices, systems and methods relating to down hole operations

E - Fixed Constructions – 21 – B

Patent

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E21B 37/02 (2006.01)

Patent

CA 2752324

A device for improving down hole operations includes a tube that delivers high pressure jets of fluid against the interior surface of a well casing and optionally into perforations of the well casing. The tube also includes a helical array of brushes that scrape and scratch accumulated residue from the interior surface of a well casing and optionally into perforations of the well casing. A method for improving down hole operations includes moving the device into a bend or turn in an existing well casing string and retracting a nozzle or brush to facilitate passage of the device past the bend or turn.

Un dispositif pour améliorer des opérations au fond dun puits comprend un tube qui délivre des jets de fluide haute pression contre la surface intérieure dun revêtement de puits et éventuellement dans des perforations du revêtement de puits. Le tube comprend également un réseau hélicoïdal de brosses qui raclent et grattent le résidu accumulé à partir de la surface intérieure dun revêtement de puits et éventuellement dans des perforations du revêtement de puits. Un procédé pour améliorer des opérations au fond dun puits comprend le déplacement du dispositif dans une courbure dans une rame de revêtement de puits existante et la rétraction dune tuyère ou dune brosse pour faciliter le passage du dispositif après la courbure.

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