US Patent Issued to Petroleo Brasileiro S.A.-Petrobras on March 24 for "Method of acidification, inhibition and damage removal for wells" (Brazilian Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,063, issued on March 24, was assigned to Petroleo Brasileiro S.A.-Petrobras (Rio de Janeiro, Brazil).

"Method of acidification, inhibition and damage removal for wells" was invented by Mario Germino Ferreira Da Silva (Rio de Janeiro, Brazil), Valtair Marcos Cristante (Rio de Janeiro, Brazil), Fernanda Rodrigues Guimaraes (Rio de Janeiro, Brazil) and Fernando Antonio Moreira Da Silva (Rio de Janeiro, Brazil).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention addresses to a method of applying a formulation obtained from a mixture of phosphonic salts and acids (R1-P(OR2)(OR3)), sulfonic acids (R-SO3H) and/or carboxylic acids (R-COOH). The pH ...