The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2026
Filed:
Dec. 15, 2022
Petróleo Brasileiro S.a.—petrobras, Rio de Janeiro, BR;
Mario Germino Ferreira Da Silva, Rio de Janeiro, BR;
Valtair Marcos Cristante, Rio de Janeiro, BR;
Fernanda Rodrigues Guimaraes, Rio de Janeiro, BR;
Fernando Antonio Moreira Da Silva, Rio de Janeiro, BR;
Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro, BR;
Abstract
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—SOH) and/or carboxylic acids (R—COOH). The pH of this formulation must be less than 3.5, preferably between 2.0 and 3.5. The formulation can be manufactured by dilution in saline fluid at the WSSV facility, in product compatible tanks on the rig or offshore platform or stimulation boat. This formulation enables acid stimulation and inhibition of the well in the same operation, in addition to removing damage caused by the use of organic acids in carbonate oil and natural gas reservoirs.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile