High pressure jet well cleaning

Details High pressure jet well cleaning High pressure jet well cleaning

1976-07-30

1978-05-09

Schroeder, Werner H.

Wells

Whirling or lateral discharge or projectable nozzles

Rotary or projectable

166312, E21B 2100

Patent

active

040881911

ABSTRACT:
Method and apparatus for directionally applying high pressure jets to well liners to clean openings which are plugged with foreign matter. High velocity jets of liquid having a velocity in excess of 700 feet per second are jetted from jet orifices having a standoff distance between five and 10 diameters of the orifice from the openings to remove substantially all plugging material from the openings. Apparatus for circulating foam is provided in combination with apparatus for delivering high pressure jets. New swivels and check valves permit rotation and reciprocation of the jet tool and tubing string while maintaining high pressure in the apparatus.

REFERENCES:
patent: 2193144 (1940-03-01), Rymal
patent: 2720381 (1955-10-01), Quick
patent: 3700034 (1972-10-01), Hutchison
patent: 3732884 (1973-05-01), Strom

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