METHOD OF PRODUCTIVITY RECOVERY AND COMMISSIONING OF NON-OPERATING OIL AND GAS WELLS Russian patent published in 2014 - IPC E21B43/16 E21B43/32 E21B43/114 

FIELD: oil and gas industry.

SUBSTANCE: method includes the conducting of repair and insulating works, "moderate" perforation of the production casing by a power drill with the working member equipped with hydromonitor channels, injection of sealing composition into the punched holes, bridge installation inside the production casing and subsequent re-perforation and development of the productive formation. Meanwhile during a single tripping of the perforator "moderate" perforation of the production casing is made in the interval below the productive formation and above the water producing formation. A simultaneous sealing of the formed holes of the interval and the bridge installation inside the production casing by means of supply of cementing composition through the perforator are performed. The perforator is backwashed when it is lifted to the productive formation, which is re-perforated and developed by the same perforator.

EFFECT: saving of time and resources for the method implementation at the expense of execution of several actions in one tripping.