Downhole fishing extension sub with cutting elements therein

Details Downhole fishing extension sub with cutting elements therein Downhole fishing extension sub with cutting elements therein

E - Fixed Constructions

21

B

E21B 31/16 (2006.01)

Patent

CA 2527390

An extension sub for a downhole fishing tool, the extension sub comprising a tubular having a threaded pin end and a threaded box end, the tubular having an interior wall defining a bore,and cutting elements fixed to the interior wall of the tubular and extending into the bore of the tubular. Such a device may be referred to as a string shoe.

Un panier-raccord à extension pour outil de repêchage de fond de forage, le panier-raccord à extension comprenant un élément tubulaire ayant une extrémité à axe fileté et une extrémité carrée filetée. L'élément tubulaire a une paroi intérieure définissant une âme, et des éléments de coupe fixés à la paroi intérieure de l'élément tubulaire et faisant saillie dans l'âme de l'élément tubulaire. Un dispositif de ce genre peut aussi être appelé sabot de tubage.

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