A novel solution for realisation of data transfer in borehole measurement systems

In the borehole measurements it is generally beneficial to be able to conduct a larger number of measurements at the same time, which results in large amounts of data that has to be send from measurements probes to surface. Most borehole systems as transmission line use monoconductor electromechanical cable with small cut-off frequency. In this paper a novel method of data transfer over monoconductor electromechanical cable is presented. This method uses HDB3 (high density bipolar of order 3) line encoding and system for reconstructing of the received signal. It achieves higher bit rates than usual methods used in borehole systems. Advantages of this method are discussed and system based on this method is presented in this paper. System is realized and measurement results are presented.