DELAYED FRACTURE OF STRUCTURE OF FLUID MEDIA FOR WELL TREATMENT Russian patent published in 2014 - IPC E21B43/22 E21B43/267 

FIELD: oil and gas industry.

SUBSTANCE: treatment method of an underground formation pierced with a well involves introduction of treating fluid medium to the well; cross-linking of hydrated polymer to increase viscosity of treating fluid medium at least for some of its parts and super cross-linking of cross-linked polymer for delayed fracture of structure of the treating fluid medium. The treatment method of the underground formation pierced with the well involves introduction to the well of the treating fluid medium containing a propping agent suspended in a carrier thickened with cross-linked polysaccharide for deposition of the filler in a fracture, super cross-linking of the cross-linked polymer for fracture of fluid medium and its flowing to the well. The method involves preparation of the treating fluid medium and its introduction to the treated structure, cross-linking of the hydrated polymer to increase viscosity of the treating fluid medium and super cross-linking of the cross-linked polymer for delayed fracture of structure of the treating fluid medium.

EFFECT: providing a controlled mode of fracture of the treating medium.

22 cl, 1 ex, 1 dwg