Jetting tool for well cleaning

Wells – Processes – Cleaning or unloading well

Patent

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Details

166223, E21B 3700

Patent

active

06062311&

ABSTRACT:
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.

REFERENCES:
patent: 5337819 (1994-08-01), Tailby
"Combined Search and Examination Report", U.K. Patent Office, Cardiff Road, Newport, Gwent NP9 1RH, Jun. 27, 1997.

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