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. 17, 2026
Filed:
Aug. 18, 2022
Petróleo Brasileiro S.a.—petrobras, Rio de Janeiro, BR;
Mario Germino Ferreira Da Silva, Rio de Janeiro, BR;
Giselle Maria Lopes Leite Da Silva, Aracaju, BR;
Tiago Cavalcante Freitas, Rio de Janeiro, BR;
Rosane Alves Fontes, Petrópolis, BR;
Fernando Antonio Moreira Da Silva, Rio de Janeiro, BR;
Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro, BR;
Abstract
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 the loss of production. First, a neutralizing solution is placed in the service line, before pumping the scale removing solution through the string to act on the DHSV. Next, the acid is pumped into the production string to react with the calcium carbonate scale. After the time for the dissolution of the scale inside the DHSV, the well is opened for production by the service line. The spent acid is mixed with the neutralizing solution inside the service line, reducing its corrosiveness in relation to the service line, contributing to its preservation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile