BEP-02  Combination Borehole Probe

The BEP-02 is a combination probe designed to measure a wide range of physical rock properties in a borehole. The probe is equipped with the following sensors:

  • Induction Conductivity sensor
  • Natural gamma (Total count and KUT)
  • Temperature sensor

The BEP-02 is controlled by an on-board microprocessor, which can sample up to 10 separate sensors at a rate of 2 Hz with up to 24 bits of resolution. The sensors are contained in a non-magnetic, non-conductive

housing which is pressure rated to 2000 meters. The BEP-02 is compatible with the BIN-04 digital data interface and IFG Corporation’s standard 4 conductor logging cable.

The BEP-02 is a cost-effective way to obtain a number of geophysical logs in a single survey run. The probe provides the measurement of 4 channel radiometric, inductive conductivity and high sense temperature. The gamma sensor is a single crystal CsI(Na) detector with a dimension of 25mm X 75mm. The radiometric channels are total count , K40, Bi214 and Tl208. The inductive conductivity sensor measures the conductivity of the rock. The high sense temperature logs can be applied for fracture mapping and water flow determination.


Conductivity Induction 1  to 106 ppm 1ppm
Gamma Scintillometer 0 to 500000 CPS 1 C/0.5sec
TC channel Scintillometer 100 - 3000 keV 1 CPS
K40 channel Scintillometer 1334 - 1604keV 1 CPS
Bi214 channel Scintillometer 1631 - 2368keV 1 CPS
Tl208 channel Scintillometer 2440 - 2862keV 1 CPS
Temperature Thermistor 0 to 50oC 0.0001oC


ELECTRODES Naval brass
HOUSING High strength filawounds tube
MAXIMUM DEPTH 2000 meters
CONNECTION   4 pin connector (Gearhardt Owen)
TEMPERATURE RANGE Storage; -35o to +70oC
                Operating: 0o to +70oC
                Extended: 0o to +125oC
OUTPUT 10mA current loop, 4800 baud
SUPPLY VOLTAGE 24VDC @ 5W (at probe header )
DIMENSIONS 40 mm diameter x 1.5 meter long
WEIGHT 3.0 kg