Patent ID: 7151465

Claim:
A method of transmitting information between a salt-cavern and the surface of the ground, said cavern being drilled in geological formation beds and being connected to the surface via an access borehole cased at least in part by metal tubes and presenting at least one safety valve, said method consisting in: suspending a string of tools from a hanger system positioned in the access borehole downstream from the safety valve and in electrical contact with the metal tubes, said string of tools including at least one measuring device connected to the hanger system via a first segment of conductor cable and an information transceiver operating by means of waves and connected to the measuring device via a second segment of conductor cable, said transceiver being positioned in such a manner as to be in contact with structural means linked to the cavern; and establishing coupling between the transceiver and the structural means, in order to enable information to be transmitted between the measuring device and the surface by propagating waves via the structural means.