METHOD OF TRANSMITTING AND RECEIVING WELL INFORMATION AND DEVICE TO THIS END Russian patent published in 2010 - IPC E21B47/12 H04B3/54 

FIELD: physics, communications.

SUBSTANCE: invention relates to communication engineering and specifically to means of transmitting data for well devices and can be used in geophysics, particularly in oil and gas industry when extracting oil using bottom hole pumps and when drilling and investigating wells. Proposed are a method of receiving and transmitting well information and a device for realising the said method, consisting of a surface unit 1 and a submerged unit 2, connected through the neutral point of the power transformer of the bottom hole pump 3, a power triple-lead cable 4 and a neutral point of the engine of the bottom hole pump 5. The surface unit 1 has series-connected processing unit 6, coder 7, controlled dc power supply 8 connected by one terminal directly to a communication line and by the other to the input of a decoder 9, whose output is connected to the input of the processing unit 6 and to the first terminal of a current-to-voltage converter 10. The second terminal of the current-to-voltage converter 10 is connected to the neutral bus of the communication line. The submerged unit 2 has an RC filter 11 and an RC filter 12, whose inputs are connected to the communication line 4, while outputs of filter 11 are connected to a voltage divider 13 and the input of a stabiliser 14, and the second RC filter 12 is connected to the point for connecting the stabiliser 14 and a zener diode 15. The output of the voltage divider 13 is connected to the input of the decoder 16, whose output is connected to the input of the processing unit 17. The first output of the processing unit 17 is connected to the input of the coder 18, which his connected by the output to the control input of a switch 20 powered from the stabiliser 14 through a current setting resistor 19, where one lead of the switch is connected to the neutral bus of the communication line. The second output of the processing unit 17 is connected to a power switch 21, whose outputs are connected to measuring sensors 22, whose outputs are connected to inputs of a measuring unit 23, whose output is connected to the processing unit 17.

EFFECT: increased noise-immunity of receiving and transmitting and increased reliability of operation.

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