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Contact
Dr. Dirk Orlowsky
Phone: +49 201 172-1993
Fax: +49 201 172-1971
E-Mail: exploration
dmt.de
Directional Down-Hole Radar
The down-hole radar system comprises the measurement truck, the cable winch, and the central measurement unit, together with a radar probe of modular design. The crew in the measurement vehicle monitors data registration and carries out quality control procedures for the measured values. The units in the probe are assembled at the drilling or workover rig and the entire system is then lowered into the hole. A lorry-mounted crane can also be used as an alternate to the drilling or workover rig.
- Workover / Setup
The modular probe comprises an omnidirectional transmitter, a direction-sensitive antenna array with receiver, telemetry unit and several spacer elements. The overall length of the system is 18 meters (when using 50 MHz antennae) or 35 meters (with 10 MHz antennae).
- Configuration of probe
Measurements with the directional radar are carried out in open boreholes, which will have to be filled with a medium exhibiting very high electrical resistance. Oil is normally used for this fill, but a dry borehole can also satisfy the requirements.
