METHOD OF HYDRAULIC FRACTURE CRACK POSITION IDENTIFICATION IN WELL (EMBODIMENTS) Russian patent published in 2020 - IPC E21B47/00 E21B43/26 

FIELD: mining.

SUBSTANCE: proposed group of inventions relates to methods of identification of position of hydraulic fractures (HF) of formation at multizonal stimulation of formation. According to the first method, the hydraulic fracturing fluid is pumped into the well at pressure higher than cracking pressure to create at least one hydraulic fracturing. Then marker pulse is pumped into the well. Then, the hydraulic fracturing fluid is pumped into the well. When the marker pulse enters at least one of the hydraulic fracturing fractures, the detected pressure response is observed, and the position of the fracturing is determined by the volume of the hydraulic fracturing fluid pumped after pumping of the marker pulse. Marker pulse is a portion of the fluid whose viscosity is higher than the viscosity of fracturing fluid 10 times or more. According to the second method, the fluid of hydraulic fracturing is injected into the well with at least one hydraulic fracturing, and the zone of initiation of at least one new hydraulic fracturing.

EFFECT: technical result consists in simplification of identification of the position of hydraulic fracturing hydraulic fractures, taking hydraulic fluid of hydraulic fracturing due to pumping into the well of "marker pulse", which in its turn does not cause significant changes in the geometry of fractures of hydraulic fracturing or in conductivity of cracks.

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