A METHOD AND APPARATUS FOR TRANSMITTING INFORMATION RELATINGTO THE OPERATION OF A DOWNHOLE ELECTRICAL DEVICE

摘要

A method of transmitting information relating to the operation of an electrical device disposed in a borehole, in which information picked up by at least one downhole sensor is conveyed to surface reception means via the wire connection connecting said device to electrical power supply means on the surface, the method being characterized in that said wire connection is inductively coupled firstly with said sensor and secondly with said reception means.