Sucker rod scraper method and device

Wells – Brushing – scraping – cutting or punching-type cleaners – On sucker rod

Patent

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Details

228135, 2281736, B23K 3102

Patent

active

045329885

ABSTRACT:
A plurality of sucker rod scrapers are securely attached in spaced apart relationship to a length of sucker rod for scraping paraffin deposits from the interior of a tubing string, thereby obviating obstruction to the flow of oil therethrough by maintaining a satisfactory effective flow area within the tubing string. The scrapers each have a spiraled scraping surface wound helically about the sucker rod and attached at each opposed end thereof by the provision of a clamping member which includes a U-band and a heat shield. The U-band has confronting marginal edge portions which overlap the edge portions of the heat shield. The heat shield has a slot formed centrally therein for receiving a tab located at either of the opposed ends of the spiraled scraper. The confronting edges of the U-band are welded to one of the marginal opposed ends of the scraper, while the heat shield prevents the metal of the sucker rod being elevated to a temperature which changes the characteristics thereof.

REFERENCES:
patent: 2453199 (1948-11-01), Crall
patent: 2733768 (1956-02-01), Tripplehorn
patent: 2772741 (1956-12-01), Polson
patent: 2928473 (1960-03-01), Tripplehorn
patent: 3499210 (1970-03-01), Schellstede et al.
patent: 4266711 (1981-05-01), Tranberg
patent: 4365736 (1982-12-01), Stumm

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