WELL OPERATION INTENSIFICATION METHOD Russian patent published in 2014 - IPC E21B43/267 E21B29/10 

FIELD: oil and gas industry.

SUBSTANCE: method comprises test forcing of fracturing fluid and pile of fracturing fluid with proppant, correcting the fracturing project and performing of the main fracturing process. At that the supported fly cutter is installed in the well so that it covers the worn out part of the production string, annular space between the fly cutter and the production string is cemented, the interval of productive stratum is perforated and the flow string with diameter of 89 mm with a packer is run in. The packer is set per 8-30 m above the fly cutter in the production string. During hydraulic fracturing components are pumped through the flow string and fly cutter, the volume of proppant is injected as sufficient for qualitative hydraulic fracturing at high concentrations of sandy-liquid slurry and flow rate of liquid.

EFFECT: performance of hydraulic fracturing in the well with worn out production string.

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