METHOD OF OIL OR GAS FORMATION HYDRAULIC FRACTURING Russian patent published in 2019 - IPC E21B43/267 C09K8/62 

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used for hydraulic fracturing of productive formation. Proposed method comprises addition of proppant particles into hydraulic fracturing fluid and its delivery at the first stage to remote part of hydraulic fracturing crack, with preservation of proppant particles during filtration of formation fluid at development of wells and production of hydrocarbons. Size of proppant particles is determined based on known flow rate. To fix the hydraulic fracture crack in the borehole zone at the second stage, proppant metal particles from a metal having shape memory, for example nitinol, are used as proppant particles to fix the fracture and to retain particles of the ceramic proppant in the fracture of hydraulic fracturing. Particles of proppant in formation conditions under the effect of temperature recover their shape to form a metal high-permeability screen which retains particles of ceramic proppant from the remote section of the hydraulic fracture crack.

EFFECT: technical result consists in improvement of efficiency of productive formation hydraulic fracturing.

1 cl, 2 dwg