ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,735, issued on April 21, 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 a wellbore having a casing. An acidic composition is injected into the wellbore; wherein a spacer separates...