METHOD OF HYDRAULIC FRACTURING OF FORMATION IN CONDITIONS OF HIGH-DISSECTED HIGH-CONDUCTIVITY RESERVOIR WITH LOW STRESS CONTRAST OF BRIDGES Russian patent published in 2020 - IPC E21B43/267 C09K8/80 

FIELD: oil, gas and coke-chemical industry.

SUBSTANCE: invention relates to the field of oil and gas industry and can be used for hydraulic fracturing of formation - HF, highly dissected weakly consolidated high-permeable sub-gas waterfowl oil deposits with low stress contrast. In the method of hydraulic fracturing of a formation in conditions of a high-permeable highly dissected reservoir with low contrast of stresses of the bridges, a buffer step is performed by pumping a linear gel for initiating a hydraulic fracturing, the mixture was then pumped into the polyvinyl alcohol fibers and a linear gel bridging highly permeable interlayers mixture was then pumped gel linear density 1250 kg/m³, super proppant density 1.05–1.08 g/cm³ and a heavy ceramic proppant density 2.77–2.88 g/cm³, further, proppant stage is pumped - light proppant with density of 1.08–1.24 g/cm³ on linear gel, then overflush is carried out.

EFFECT: technical result is creation of the required fracture geometry of hydraulic fracturing, increased extraction of reservoir fluids due to involvement of maximum productive high-permeability interlayers by means of vertical fracture without its breakthrough into gas-saturated and water-saturated formations.

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