ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,707, issued on June 24, was assigned to SHELL USA INC. (Houston).
"Plugging tool for downhole tubulars and method for use thereof" was invented by Erik Kerst Cornelissen (Amsterdam) and Coen Van Schie (Amsterdam).
According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole tool (1) is provided for plugging a hole in a wall of a downhole tubular (11). The tool has a tool housing (3) and a sting (7) arranged within the tool housing. The sting is moved in radially outward direction from the tool from a retracted position to an expanded position. A distal end of the sting plugs the hole in the wall of the downhole tubular. A spring blade (5) is arranged on ...