Patent ID: 9329299
Filing Date: 2016-05-03
CPC Classification: G01V

Claim Text:
1. A detection system of geological formations comprising: an electromagnetic transmission device positioned on an above-ground surface of a geological formation adjacent a first well having a vertical development direction, a metal casing covering a portion of the first well; and an electromagnetic receiving device positioned at a depth inside the first well, below a surface plane of the above-ground surface of the geological formation, the electromagnetic receiving device including electromagnetic detection circuitry, wherein the electromagnetic transmission device includes electromagnetic field generating circuitry configured to generate a primary electromagnetic field focalized in a direction of the metal casing, the metal casing being configured to irradiate the primary electromagnetic field in the geological formation, and wherein the electromagnetic field generating circuitry has two pairs of electric dipoles orthogonal to each other in twos and parallel to the surface plane of the geological formation and a third electric dipole situated along the vertical development direction of the first well and positioned in a second well adjacent to the first well.