ELECTROMECHANICAL CONVERTER FOR ACOUSTIC COMMUNICATION CHANNEL Russian patent published in 2010 - IPC E21B47/16 

FIELD: oil and gas industry.

SUBSTANCE: electromechanical converter of acoustic communication channel includes housing with flushing liquid passage channels, protection container (PC), piezoelectric ceramic element arranged in PC, reducer with lock connection and passage holes of flushing agent to channels of housing, and interface assembly. On opposite end part of the housing there arranged is PC pressing device. At that, piezoelectric ceramic element is installed with possibility of interacting with inner edge surface of PC wall. Housing, PC pressing device and edge part of reducer form a tight chamber in which PC is arranged. Interface assembly is made in the form of a layer of organic-silicon paste, which is arranged between external edge surface of PC wall and edge part of reducer. Signal transmitted via pipe string is received with receivers on the surface.

EFFECT: increasing efficiency of the device owing to providing close acoustic contact between container and drilling site in order to exclude power losses, reduction of manufacturing costs of the device owing to reduction of requirements for accurate processing of contact surfaces, accuracy of their interface, and simplifying the device operation.

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