ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,118, issued on March 17, was assigned to Petroleo Brasileiro S.A.-Petrobras (Rio de Janeiro, Brazil).
"DHSV scale removal method in the production string" was invented by Mario Germino Ferreira Da Silva (Rio de Janeiro, Brazil), Giselle Maria Lopes Leite Da Silva (Aracaju, Brazil), Tiago Cavalcante Freitas (Rio de Janeiro, Brazil), Rosane Alves Fontes (Petropolis, Brazil) and Fernando Antonio Moreira Da Silva (Rio de Janeiro, Brazil).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention addresses to a method of removing scale from the DHSV of the oil production string aiming at maintaining the production of the wells and thus avoiding...