METHOD OF BRINGING THE WELL ON TO PRODUCTION MODE DRILLED IN NATURALLY FRACTURED FORMATION Russian patent published in 2020 - IPC E21B43/267 G06F30/10 

FIELD: mining.

SUBSTANCE: invention relates to technologies of well preparation drilled in naturally fractured reservoir, to withdrawal to mode, in particular to optimization of parameters having a direct impact on increase in well productivity after hydraulic fracturing (HF). Method comprises measuring pore pressure in formation, performing hydraulic fracturing of formation and forming fracture in formation by pumping HF fluid into well. In the process of injection, bottomhole pressure is determined and the obtained values of pore pressure and bottomhole pressure are used to determine properties of the formation and properties of contact of the hydraulic fracture crack with natural cracks in the formation by simulating the flow of hydraulic fracturing fluid into natural fractures in the formation. Obtained results and the same model are used to predict the volume of hydraulic fracturing fluid pumped from the well after hydraulic fracturing of the formation. Optimal duration of well shutdown and / or change of bottomhole pressure during pumping are selected based on predicted volume of hydraulic fracturing fluid and selected parameters are used when the well is brought to mode.

EFFECT: technical result achieved when realizing the invention consists in increasing conductivity of the formed in the process of HF crack with simultaneous prevention of emergency situations caused by removal of proppant from the HF crack.

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