DEVICE FOR WAVE PROCESSING OF PRODUCTIVE FORMATIONS Russian patent published in 2010 - IPC E21B28/00 F15B21/12 

FIELD: mining.

SUBSTANCE: device consists of housing made in the form of flat working chamber with outlet provided at rear end. Working chamber is restricted with front wall in which there located along longitudinal axis is removable nozzle which is hydraulically connected to working agent source. Working chamber is restricted with side walls, upper and lower walls. Two branch pipes removing the working agent and hydraulically connected to the content of well casing are connected to the working chamber outlet. Longitudinal axes of branch pipes lie in the plane of longitudinal axis of working chamber and are parallel to each other. Length of one of outlet branch pipes is more than the length of the second one by the value determined with analytical expression.

EFFECT: increasing duration of action on the formation by increasing the vibration amplitude of low frequency pressure at the formation inlet, enlarging the operational life by eliminating the cavitation effect in the device.

5 cl, 6 dwg