US Patent Issued to PETROLEO BRASILEIRO S/A-PETROBRAS, UNIVERSIDADE ESTADUAL DE CAMPINAS on June 3 for "Diverter acid fluid composition for the stimulation of reservoirs by matrix acidification" (Brazilian Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,873, issued on June 3, was assigned to PETROLEO BRASILEIRO S/A-PETROBRAS (Rio de Janeiro, Brazil) and UNIVERSIDADE ESTADUAL DE CAMPINAS (Campinas, Brazil).

"Diverter acid fluid composition for the stimulation of reservoirs by matrix acidification" was invented by Renato Nunes de Souza (Campinas, Brazil), Manazael Zuliani Jora (Santa Barbara D'oeste, Brazil), Matheus da Silva Barbosa (Campinas, Brazil), Edvaldo Sabadini (Campinas, Brazil) and Carlos Speglich (Campinas, Brazil).

According to the abstract* released by the U.S. Patent & Trademark Office: "A diverter acid fluid composition for use in the stimulation of oil wells during exploration thereof, named Quovadis is disclosed. ...