Jetting tool for well cleaning

Details Jetting tool for well cleaning Jetting tool for well cleaning

E - Fixed Constructions

21

B

E21B 21/14 (2006.01) E21B 7/18 (2006.01) E21B 37/00 (2006.01) E21B 41/00 (2006.01)

Patent

CA 2236563

An apparatus for cleaning subterranean wellbores is described. The apparatus comprises a sleeve member which is fixed to a part of the drillstring and a rotatable jet head with nozzles through which an abrasive fluid is discharged. The nozzles are mounted such that the fluid jet is directed to an area of the wellbore immediately adjacent to a leading edge of the sleeve. The nozzle head is restricted in its protrusion out of the sleeve.

Description d'un dispositif de nettoyage des puits souterrains. Le dispositif comprend un manchon qui est fixé à une partie du train de tiges et une tête rotative pour le jet munie de buses par lesquelles un fluide abrasif est expulsé. Les buses sont installées de manière que le jet de fluide soit dirigé vers une zone du puits immédiatement adjacente à un bord d'attaque du manchon. La tête de la buse fait saillie hors du manchon de façon limitée.

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