System for cableless bidirectional data transmission in a well for the extraction of formation fluids

A system for cableless bidirectional data transmission in a well for the extraction of formation fluids comprising:

• a plurality of rods connected to each other in succession so as to form a rod string, which extends from the surface to the bottom of said well,
• said rod string is associated with a plurality of sensors configured for continuously detecting a plurality of parameters relating to the fluids circulating in the well and to the rock formation surrounding the well and/or to safety devices or other remote-controlled well instrumentation;
• a plurality of communication modules applied at predefined distances along said rod string and configured for the transmission of signals from and towards the bottom of the well;
• each of said communication modules comprising:
• at least one metal plate selected from:
• a transmitting metal plate;
• a receiving metal plate;
• a transceiver metal plate;
• an electronic processing and control unit configured for processing signals to be transmitted by said at least one metal plate or signals received by said at least one metal plate;
• one or more supply batteries for feeding said metal plates and said electronic processing and control unit,
• wherein the transmission of the signal to be transmitted from a first communication module of the plurality of communication modules to a second module of the plurality of communication modules occurs by injecting into the fluid surrounding the rod string, by the at least one metal plate of the first communication module, an electric current that carries an information signal, at least a part of the injected electric current, that has propagated through at least the fluid, being received by the at least one metal plate of the second communication module.