B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
103/142, 166/57
B23K 31/02 (2006.01)
Patent
CA 1236007
"SUCKER ROD SCRAPER METHOD AND DEVICE" ABSTRACT OF THE DISCLOSURE 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 ob- viating 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 confront- ing 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. -1-
472659
Beal Walter
Borden Ladner Gervais Llp
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