WELL OPERATION INTENSIFICATION METHOD Russian patent published in 2013 - IPC E21B43/267 

FIELD: oil and gas industry.

SUBSTANCE: method involves perforation made by means of a drilling or milling method, performance of hydraculic fracturing through the formed perforation holes and development of a well. Perforation density is accepted equal to not more than 10 holes per running metre of the perforation interval; hydraulic fracturing is performed in series in the formations separated with a waterproof bridge with thickness of not less than 7 m. Hydraulic fracturing of each formation is performed in a partial load mode with low fracturing liquid flow rate of not more than 2.0 m³/min, with reduced liquid flow rate at replacement of the well volume with crosslinked gel to the value of not more than 1.0 m³/min, decreased proppant concentration of not more than 1100 kg/m³ and the wellhead pressure of not more than 22 MPa.

EFFECT: improving intensification efficiency of a well developing a multi-zone reservoir.