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US 11,772,180 B2Granted
Work string tubing connection restoration
AssigneePostle Industries, Inc.
InventorsRobert F. Miller, James D. Allen, Steven L. Stefancic
Life of this patent
Estimating the term…
Abstract
A hardfacing metal composition and method of restoring worn work string tubing by application of a hardfacing metal to the worn regions of the work string tubing.
Claims10
A method for repairing a worn tubing, said method comprises the steps of:
- providing said worn tubing;
- said worn tubing comprising a tube body, a box located at one end of said tube body, and a threaded pin member located at the other end of said tube body;
- said threaded pin member including a threaded region and an upset portion located rearwardly of said threaded region;
- said upset portion having an upset outer surface that defines an upset outer diameter;
- said box having a base body with a base body outer surface that defines a base body outer diameter;
- said base body having a base body front end, a base body back end, a cavity and threads located in said cavity;
- applying a hardfacing metal to (a) said base body outer surface in a direction from said base body front end towards said base body back and wherein at least a portion of said hardfacing metal is located above said threads in said cavity of said base body, and/or (b) said upset outer surface in a direction from a front end of said upset portion to a back end of said upset portion and wherein said hardfacing metal is spaced from said threaded pin member;
- and
- wherein said step of applying is selected to minimize or prevent (i) disfiguration of said base body, (ii) damage to said threads in said cavity of said base body, (iii) formation of holes in thin or worn areas of said base body, (iv) formation of holes in said tube body, and/or (v) damage to said threaded region of said threaded pin member.
6 more elements
Dependencies are inferred from the claim text.