FLUID FOR HYDRAULIC RUPTURE OF FORMATION COMPRISING BLOCK COPOLYMER CONTAINING AT LEAST ONE WATER-SOLUBLE BLOCK AND ONE HYDROPHOBIC BLOCK

摘要

FIELD: oil and gas production. ^ SUBSTANCE: invention provides fluid comprising aqueous liquid and above-defined block copolymer, which is especially suitable within high-temperature ranges above 180. Viscosity of fluid is stable at high temperatures and fluid is capable of suspending and transporting proppants and nearly does not damage of formation and preserves its efficiency upon action of various chemical conditions. ^ EFFECT: improved performance characteristics. ^ 32 cl, 6 tbl, 17 ex