METHOD OF HYDRAULIC FRACTURING CRACKS INITIATION IN BOREHOLE ZONE OF GEOLOGICAL FORMATION Russian patent published in 2020 - IPC E21B43/26 

FIELD: mining.

SUBSTANCE: invention relates to methods of hydraulic fracturing of a formation. According to the method in the cased well containing at least one interval with perforating holes or ports in the casing string, at least one energy source with an initiating device is arranged to create and propagate the fracture of hydraulic fracturing of the formation. Above the energy source towards the wellhead there is a one-side isolating device preventing fluid flow in the direction of the wellhead. At controlled moment of time initiating by means of initiating device energy source, which leads to local energy release and creation of volume of compressed gas in well, pumping liquid initiation of hydraulic fracturing of formation under pressure in geological formation, providing creation of at least one fracture of hydraulic fracturing in geological formation.

EFFECT: technical result achieved during implementation of invention consists in provision of improved conductivity of created fractures of hydraulic fracturing, reduced tortuosity and curvature of cracks in borehole zone, reduction of pressure losses, provision of more homogeneous coverage of productive formation by network of fractures of hydraulic fracturing.

5 cl, 2 dwg