METHOD OF TYING GEOMETRY OF HYDRAULIC FRACTURING TO MICROSEISMIC EVENTS Russian patent published in 2016 - IPC E21B43/267 G06G7/48 

FIELD: mining.

SUBSTANCE: group of inventions relates to mining and can be used in hydraulic fracturing of formations. Disclosed is a method of performing hydraulic fracturing at drill site in underground reservoir with a network of cracks and with natural fracturing. Inflow into well is intensified by pumping liquid into network of cracks. Method consists in processing data of drilling platform, including parameters of natural fracture and obtaining measurement results of microseismic events; simulation of hydraulic fractures of network of cracks based on data of drilling platform and determination of geometry of hydraulic fractures; creation of stress field of hydraulic fractures by means of a geomechanical model; determining parameters of shear destruction, including envelopes of destruction zone and state of stress around crack system; locating shear destruction in network of cracks from envelopes of zones of destruction and state of stress, as well as in determination of hydraulic fracture geometry by comparing simulated hydraulic fractures and location of shear destruction with measured microseismic events.

EFFECT: technical result is improvement of efficiency of hydraulic fracturing of formations.

20 cl, 4 tbl, 44 dwg