Wells – Brushing – scraping – cutting or punching-type cleaners – Perforation cleaners
Patent
1980-08-01
1982-06-01
Novosad, Stephen J.
Wells
Brushing, scraping, cutting or punching-type cleaners
Perforation cleaners
166173, B08B 902, E21B 3702
Patent
active
043322964
ABSTRACT:
A liner cleaning tooling comprising an elongate vertically extending cylindrical body, coupling means at the upper end of the body to connect with a fluid conducting run-in pipe string, a central longitudinal flow passage in the body communicating with the pipe string and opening downwardly, an enlarged, central, axially extending cylindrical chamber in the body between the upper and lower end portions of the flow passage, a plurality of circumferentially spaced ball receiving openings in the body communicating between the exterior of the body and the chamber, an elongate axially shiftable mandrel with a downward and radially inwardly convergent conical surface slidably engaged in the chamber and having a central longitudinal fluid conducting opening, a helical compression spring in the chamber above the mandrel and engaging and normally yieldingly urging the mandrel downwardly and a ball rotatably and axially shiftably arranged in each opening and having an outer liner engaging portion projecting radially outwardly from the body and an inner portion projecting radially inwardly into the chamber and engaging the mandrel.
REFERENCES:
patent: 438964 (1890-10-01), Watson
patent: 915584 (1909-03-01), Frazee
patent: 2224412 (1940-12-01), Smith
patent: 2826077 (1958-03-01), Walker
patent: 4031590 (1977-06-01), Clavin
patent: 4067386 (1978-01-01), Weise
Falk Joseph
Maxwell Georges A.
Novosad Stephen J.
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