US Patent Issued to DORF KETAL CHEMICALS FZE on March 17 for "Downhole methods and compositions used in such" (Canadian Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,453, issued on March 17, was assigned to DORF KETAL CHEMICALS FZE (Fujairah, United Arab Emirates).

"Downhole methods and compositions used in such" was invented by Tom McLoughlin (Foothills, Canada), Steven Scott Mann (Okotoks, Canada), Clay Purdy (Medicine Hat, Canada) and Markus Weissenberger (Calgary, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of the invention prepares a hydrocarbon-bearing formation for stimulation. A bottom hole assembly comprising a plug and a perforation tool connected to a wireline is lowered into the wellbore. Acid is injected into the wellbore such that the acid is in direct contact with the perforati...