ELECTROMAGNETIC SOURCE INTEGRATED INTO AN ELEMENT OF A WELL CASING

摘要

Electromagnetic source intended to be placed permanently in a drill well for studying the electromagnetic properties of the geological formations or of the fluids surrounding the well. This source consists of a coil through which a high current is circulated and which is of a diameter of the order of magnitude of the diameter of the well and is integrated in one of the elements of the casing produced at least partially from a resistant material in which the coil is embedded. This source can either be activated directly by a conductor shoe moving along in the well or be connected to a supply by means of cables.