Hyper cleaning casing brush

Wells – Brushing – scraping – cutting or punching-type cleaners – On tubing or casing

Patent

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Details

151042, E21B 3708

Patent

active

045013225

ABSTRACT:
A vertically elongated cylindrical and hollow thick-walled body is provided and includes a tubular swivel structure carried by its upper end for removable attachment to a supporting bottom tubing section of a tubing string disposed within a casing to be cleaned. The body includes circumferentially and axially spaced outwardly projecting brushes and circumferentially and axially spaced inwardly retractable spring biased spray nozzles interspersed between adjacent brushes. The body is hollow and includes a closed lower end and the upper end of the body includes a tubular neck extending upwardly into the tubular swivel structure by which the body is to be attached to the associated bottom tubing section. Fluid under pressure to be supplied to the retractable spray nozzles is piped down through the associated tubing string and into the interior of the hollow body for communication with the retractable nozzles. The outer ends of the brushes are spaced greater radial distances from the center axis of the body than the outer extremities of the nozzles, when the latter are in their radial outermost positions.

REFERENCES:
patent: 1342618 (1920-06-01), Bashara
patent: 1806073 (1931-05-01), MacGregor
patent: 2145190 (1939-01-01), Nay
patent: 2228640 (1941-01-01), O'Neill
patent: 3224506 (1965-12-01), Huitt

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