ACOUSTIC DOWNHOLE EMITTER Russian patent published in 2014 - IPC E21B43/25 E21B28/00 

FIELD: oil and gas industry.

SUBSTANCE: acoustic downhole emitter contains an electronic unit, the upper head ensuring connection to a cable terminal connector, the lower head, a channel for electric wires and metal tight bodies interconnected into the whole structure with piezoelectric transducers placed in them. Inner and outer surface of each body has groove-shaped caves. At that in the bodies there are bushings with screw nuts fixed to them so that the two neighbouring bodies can be fixed towards each other by means of metal wires fixed to two screw nuts of the neighbouring bodies simultaneously. Besides the bodies are also fixed to each other by parts formed by moulding of a rubber-plastic compound at joints of a gap between the two neighbouring bodies.

EFFECT: improvement of efficiency in impact on the well due to a higher efficiency factor of emission in radial direction and generation of a continuous acoustic wave, provision of treatment for horizontal bores and offshoots.

5 cl, 1 dwg