FRACTURING FLUIDS BASED ON ASSOCIATIVE POLYMERS AND ON LABILE SURFACTANTS Russian patent published in 2018 - IPC C09K8/68 C09K8/90 E21B43/267 

Abstract RU 2673832 C2

FIELD: chemistry.

SUBSTANCE: present invention relates to fluids for fracturing a subterranean formation used in the extraction of hydrocarbons from a subterranean formation. Fracturing fluid containing in an aqueous medium an associative polymer and a labile surfactant in sufficient amount to reduce or suppress the effect of increasing viscosity caused by said associative polymer. Method of extracting hydrocarbons in a hydrocarbon formation, comprising a step where said fracturing fluid is injected into a hydrocarbon formation, where the temperature and/or pH conditions are acceptable for the decomposition of all or part of the labile surfactant. Invention is developed in subclaims.

EFFECT: high efficiency of processing.

8 cl, 1 ex, 1 tbl

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RU 2 673 832 C2

Authors

Kadiks, Arno

Uilson, Dzhejms

Dates

2018-11-30Published

2014-04-10Filed