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:
Dec. 19, 2023
Filed:
Dec. 10, 2021
Ypf Tecnología S.a., Ciudad Autónoma de Buenos Aires, AR;
Juan Martín Giussi, Ituzaingó, AR;
Lila Arias, Ciudad Autónoma de Buenos Aires, AR;
Roque Carlos Dietrich, La Plata, AR;
Isabel Vega, Ciudad Autónoma de Buenos Aires, AR;
Sofía Rivelli, Ciudad Autónoma de Buenos Aires, AR;
Juan Manuel Padró, La Plata, AR;
Frederico Irou Roschzttardtz, La Plata, AR;
Gabriel Lombardo, Ituzaingó, AR;
Paula Cecilia Dos Santos Claro, Villa Elisa, AR;
YPF TECNOLOGIA S.A., Ciudad Autonoma de Buenos Aires, AR;
Abstract
A friction reducer comprising a copolymer of acrylamide, an anionic monomer, a zwitterionic monomer or a cationic monomer, a physical ligand or a chemical ligand, wherein the acrylamide amounts to at least 50% (w/w) of the total monomer content. The friction reducer is useful in hydraulic fracturing operations and is obtained by controlled radical polymerization at a temperature between 30° C. and 70° C. using iodine as polymerization control agent.