METHOD FOR OPENING A PRODUCTIVE FORMATION OF A WELL WITH SHAPED CHARGES AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC E21B43/117 E21B43/263 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to perforating and blasting operations in oil and gas wells. The method includes delivering at least one supporting structure with at least one shaped charge installed on/in it, initiating the shaped charge and forming a perforated channel in the productive formation. In addition to the shaped charge, at least one additional explosive charge is delivered to the perforation interval, followed by its initiation inside the perforated channel and an increase in the size of the perforated channel, while before delivery or during delivery or after delivery to the perforation interval, an additional explosive charge is bent to ensure its plant in the perforated channel, after delivery to the interval of perforation and bending, an additional explosive charge is planted in the perforated channel, associated with its bending in the direction of the perforated channel.

EFFECT: providing the ability to increase the size of the perforated channel obtained by preliminary operation of a standard shaped charge to the required size.

9 cl, 18 dwg