US Patent Issued to SHELL USA on Dec. 30 for "Method of creating a plurality of longitudinally separated circumferential dents in a wellbore tubular" (Dutch, American Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,953, issued on Dec. 30, was assigned to SHELL USA INC. (Houston).

"Method of creating a plurality of longitudinally separated circumferential dents in a wellbore tubular" was invented by Walter Stam (Amsterdam) and James G Rairigh (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "An energetics tool is inserted downhole in a wellbore tubular, which has a string of at least two axially separated shaped charges. With this tool N axially separated circumferential dents are created, using a string of only M=(N+1)/2 axially separated charges. N is an odd number of 3 or higher. Two additional axially separated dents may be created for each additional...