HIGH-SPEED TELEMETRY SIGNAL PROCESSING Russian patent published in 2020 - IPC E21B47/20 H04B15/00 

FIELD: telemetric systems.

SUBSTANCE: present invention relates to signal processing systems for use with respect to acoustic signal generators when drilling wells. In particular, disclosed is a drilling system comprising a drilling pump, and also comprising: a sensor, an encoder, functionally connected to the sensor; pressure pulses generator, functionally connected to coder, wherein the pressure pulse generator is configured to generate a primary signal in response to the input signal from the encoder; a primary converter for generating a primary converter signal in response to a primary signal measurement result; a reference converter for generating a reference transducer signal in response to the reflection of the primary signal from the drilling pump; and a signal processor connected to the primary transducer and the reference transducer. Signal processor has a two-step filter which is configured to extract the primary signal from the signal of the primary transducer and the signal from the reference transducer.

EFFECT: technical result is noise reduction in the transmitted primary MWD signal.

20 cl, 3 dwg