RELAY MODULE FOR TELEMETRIC SYSTEM WITH ELECTROMAGNETIC COMMUNICATION CHANNEL Russian patent published in 2016 - IPC E21B47/13 

FIELD: geophysics.

SUBSTANCE: invention relates to geophysical investigations of wells during drilling using telemetric systems based on electromagnetic data transmission channel. Disclosed is a repeater module for telemetric system with electromagnetic communication channel, including electronics unit including differential amplifier connected to comparator via low-pass filter and automatic gain control unit. Electronics unit is equipped with controller connected with comparator, DC source and signal power amplifier, electronic unit with one side is connected with turbo generator through the upper crosspiece and dielectric insert, and at the other side - with electronic unit extender, closing contact with lower crosspiece, and is installed in generator body and insulator body.

EFFECT: technical result is increased reliability and speed of data transfer by electromagnetic communication channel owing to use of higher frequencies of works under unfavourable for hydro-pulse propagation conditions.

1 cl, 2 dwg