FRICTION REDUCING COPOLYMERS AND METHOD OF PREPARATION THEREOF

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...

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Bibliographische Detailangaben
Hauptverfasser: LOMBARDO, Gabriel, GIUSSI, Juan Martín, ROSCHZTTARDTZ, Frederico Irou, RIVELLI, Sofía, DOS SANTOS CLARO, Paula Cecilia, DIETRICH, Roque Carlos, ARIAS, Lila, VEGA, Isabel, PADRÓ, Juan Manuel
Format: Patent
Sprache:eng
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Zusammenfassung: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.