IMPROVEMENT SYSTEM FOR DATA TRANSMISSION THAT SERVES A POCO HOLE, PERFECTED MEANS FOR TRANSMISSION OF ELECTRIC SIGNS THROUGH A PROSPECTING LINE AND PROCESS OF TRANSMITTING SIGNAL OF DATA IN A POCO HOLE

摘要

Method and apparatus of transmitting data signals within a well bore having a string of tubular members (11, 13) suspended within it, employing an electromagnetic field producing (32) means to transmit the signal to a magentic field sensor (19), which is capable of detecting constant and time-varying fields, the signal then being conditioned so as to regenerate the data signals before transmission across the subsequent threaded junction by another electromagnetic field producing means and magnetic sensor pair.