Drilling tool with fluid cleaner

Details Drilling tool with fluid cleaner Drilling tool with fluid cleaner

E - Fixed Constructions

21

B

E21B 4/04 (2006.01) E21B 27/00 (2006.01) E21B 49/02 (2006.01)

Patent

CA 2685061

Drilling tool (1) for drilling a well downhole where fluid is surrounding the tool and where the tool has a housing (15) and is connected to an electrical conducting means, such as a wireline. The drilling tool has a drilling head (2) and a fluid cleaner (3) for removal of elements, such as debris and formation pieces, from the fluid while drilling downhole. The fluid cleaner has a chamber (4) and a filter (5) within the chamber for separation of the elements from the fluid. The tool further comprises a pump (8) for pumping the fluid into the chamber through an inlet (11) in the drilling head (2) and through the filter before entering the well again. Furthermore, the tool comprises a driving unit for driving the pump and the drilling head.

L'invention porte sur un outil (1) de forage d'un puits dans un liquide entourant l'outil qui présente un logement (15) et est relié à un conducteur électrique tel qu'un câble électrique. L'outil (1) présente une tête de forage (2) et un nettoyeur de liquide (3) permettant d'éliminer du liquide certains éléments solides, tels que des débris et des morceaux de formation, en cours de forage. Le nettoyeur de liquide comporte une chambre (4) et un filtre (5) placé dans la chambre pour séparer les éléments solides d'avec le fluide. L'outil comprend de plus une pompe (8) pompant le liquide dans la chambre via une ouverture (11) pratiquée dans la tête de forage (2) et à travers le filtre, avant sa réinjection dans le puits. L'outil comprend en outre une unité d'entraînement de la pompe et de la tête de forage.

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