CHARGING MODULE OF CASING-TYPE SHAPED-CHARGE PERFORATOR Russian patent published in 1999 - IPC

FIELD: oil and gas production industry. SUBSTANCE: perforator is used for opening of productive beds in oil and gas wells. Charging module contains shaped explosive charges, fire line for transmitting detonation from charge to charge and from module to module. This fire line goes above all peaks of shaped explosive charges. Fire line is located in groove of base. Base is made of porous material. Fire line is made in the form of piece of detonating cord housed in metal sheathing. Piece of detonating cord is fastened in groove and it is provided with amplifier of shock wave. Number of these linear shock wave amplifiers corresponds to number of shaped explosive charges plus two end-located amplifiers. Shock wave amplifiers are made of non-explosive material with acoustic stiffness higher than 3•10⁷ kg/sq.m/s. Application of aforesaid embodiment of charging module ensures higher reliability in performance of charging modules of casing-type shaped-charge perforator with simultaneous reduction of cost of general preparatory work. EFFECT: higher efficiency. 5 cl, 4 dwg