US 12,247,442 B1
Lifting plug
Steve Langford, Meudon (FR); and Pierre Martin, Meudon (FR)
Assigned to VALLOUREC OIL AND GAS FRANCE, Aulnoye-Aymeries (FR)
Filed by VALLOUREC OIL AND GAS FRANCE, Aulnoye-Aymeries (FR)
Filed on Oct. 13, 2023, as Appl. No. 18/486,683.
Int. Cl. E21B 17/00 (2006.01); E21B 17/10 (2006.01)
CPC E21B 17/006 (2013.01) [E21B 17/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A lifting plug for connection with a drill pipe, a casing, or a production tubing, the lifting plug comprising:
a body comprising an externally threaded portion;
a flange at a first end of the body; and
a grease collection groove interrupting at least a part of the externally threaded portion,
wherein the grease collection groove terminates at a free end of the body,
wherein the grease collection groove has a generally flat base and side walls, and
wherein the side walls of the grease collection groove are oriented at an angle with respect to the flat base so as to provide an undercut.