Divergent fluid nozzle for drilling tool

Details Divergent fluid nozzle for drilling tool Divergent fluid nozzle for drilling tool

1992-09-16

1994-03-15

Britts, Ramon S.

Boring or penetrating the earth

Miscellaneous

E21B 1018

Patent

active

052939464

ABSTRACT:
A drilling fluid nozzle 12 mounted in the end of an earth drilling tool 10 has a flow channel defined by a surrounding wall 16 which diverges at an angle of 30.degree. or less, such that the exiting fluid "adheres" to the wall in a laminar manner due to the Coanda effect. This configuration minimizes clogging, and implements ready unclogging.

REFERENCES:
patent: 4185706 (1980-01-01), Baker, III et al.
patent: 4531592 (1985-07-01), Hayatdavoudi
patent: 4703814 (1987-11-01), Nguyen
patent: 4723612 (1988-02-01), Hicks
patent: 5009272 (1991-04-01), Walter

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