Journal of Radio Electronics. eISSN 1684-1719. 2023. №12
ContentsFull text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2023.12.11
Transceiver for investigation
of the downhole-wellhead communication channel
O.V. Stukach 1,2, I.A. Ershov 2, S.V. Bykov 2
1 National Research University Higher School of Economics
101000, Moscow, 20 Myasnitskaya Str.
2 Novosibirsk State Technical University
630073, Novosibirsk, 20 K. Marx Ave.
The paper was received October 26, 2023.
Abstract. An ultrasonic receiving and transmitting communication system for the borehole bottom-wellhead channel inside the casing pipe based on PIC18F2455 has been designed. Combined receivers-transmitters TR60-10H0Z-01 were used as piezoelectric elements. The signal frequency was 60 kHz, the encoding was “Manchester-II”. The negative impact of interference is reduced at ultrasonic frequencies, and due to the heterogeneity of the medium, it is assumed to decrease the level of signal attenuation. The selected piezoelectric elements allow to increase the amplitude of the signal up to 140 V. The paper presents and describes in detail the basic electrical circuits of the transmitter and receiver. Developed devices operate from 12 V batteries without primary power supply. The signal to the piezoelectric emitter comes from a transformer. Two keyed-mode transistors opening one by one are connected with the transformer. Buffer amplifiers are used to open the keyed transistors. The developed system was tested on a tested, which is a pipe filled with water. As a result of the experiments, no significant attenuation of the signal was observed.
Key words: measurement while drilling, ultrasound channel, well telemetry, signal coding.
Financing: The study was carried out with the financial support of the Russian Scientific Foundation in the framework of scientific project No. 22-29-00024.
Corresponding author: Ershov Ivan Anatolyevich, ershov@corp.nstu.ru
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For citation:
Stukach O.V., Ershov I.A., Bykov S.V. Transceiver for investigation of the downhole-wellhead communication channel. // Journal of Radio Electronics. – 2023. – №. 12. https://doi.org/10.30898/1684-1719.2023.12.11 (In Russian)