The process of detection by radar in a borehole in a geological formation, and device and system for the detection of electrical properties in a geological formation via a well.

摘要

"The process of detection by radar in a borehole in a geological formation, and.Device and system for the detection of electrical properties in a geological formation via a well, the invention is a process for detection by radar in a casing (1) in a geological formation (9),Comprising the following steps: I) placing at least one transmitter antenna (2) in a position and direction fixed to the casing (1); and (II) generate a first series of electrical signals (25) for aThe transmitter antenna (2) and emission of a first series of electromagnetic waves (26 ~ 1 ~) of the transmitter (2) at a time (t ~ 1 ~); (III) receipt of a first series of waves eletromagnu00e9tiCAS reflected (85 ~ 1 ~ 85 ~ 2 ~, 85 ~ n ~) in at least one, and preferably more receiving antennas (8 ~ 1 ~ 8 ~ 2 ~...8 ~ n ~)Optionally, the amplification and processing of electromagnetic waves reflected for the record (s ~ 1 ~); (IV) to generate a second series of electrical signals (25) to the transmitter (2) and.Use of electromagnetic waves (26 ~ 2 ~) of the transmitter (2), in a later time t ~ 2 ~, with the time difference T ~ 2 ~ t ~ 1 ~ and, typically, several hours, days.Or longer; (V) the reception of a second series of electromagnetic waves reflected (85 ~ 1 ~ 85 ~ 2 ~, 85 ~ n ~) for the receiving antennas (8 ~ 1 ~ 8 ~ 2 ~...8 ~ n ~), optionally amplification and processing of electromagnetic waves reflected for the record (s ~ (2 ~).