ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,610, issued on Dec. 9, was assigned to PETROLEO BRASILEIRO S.A.-PETROBRAS (Rio de Janeiro, Brazil).
"System and method for isolation and chemical injection in a completion string of oil wells with open intervals" was invented by Mario Germino Ferreira Da Silva (Rio de Janeiro, Brazil).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a system for isolation and chemical injection in a completion string of oil wells with open intervals, comprising an inflatable inner bag and a swellable material, a chemical injection hydraulic line circuit of a chemical injection system, and at least one chemical injection mandrel. The chemi...