FIELD: oil and gas production.
SUBSTANCE: inventions group relates to oil and gas production. The composition for producing an injected fluid for oil and gas production contains an inverse emulsion of a water-soluble polymer A containing cationic monomer units, and solid particles of a water-soluble polymer B containing cationic monomer units. Water-soluble polymer A contains from 10 to 40 mol.% cationic monomer units, based on the total number of monomer units. The mol% cationicity of polymer A is greater than or equal to the mol% cationicity of polymer B. A method for treating a section of a subterranean formation includes providing the above composition, obtaining an injected fluid using at least the above composition, introducing the injected fluid into a section of a subterranean formation. The fracturing method includes providing the above composition, obtaining a fracturing fluid using at least the above composition and at least a proppant, introducing the fracturing fluid into a section of a subterranean formation.
EFFECT: improving the viscosity of the injected fluid, ensuring the suspension of particles in it, including under the condition of high shear force, environmental safety.
22 cl, 4 tbl
