Products

Borehole Logging Systems

Induction Conductivity

H3I-453
H4I-453
HI-381
HI-453, HI-453E
HI-453F
HII-383
HII-453

Magnetic Susceptibility

HM-453, HM-383, HM-320
HM-453E, HM-383E
HM-100
HMM-453
HMG-453

Combined probes

HMI-453, HMI-453E

Other probes

HC-380
HC-380C
HC-453, HC-453a
HC-454
HRT-381
HF-380
HGSPR-380
HF-500
HN-453
HFN-381
HGG-453
HDG-453
HLG-382

Other products

BHC-200
Geo set HDS-600
Portable Winches
Portable Logging System
Cameras

Accessories

AH-30, AH-150

Logging instruments

Magnetic Susceptibility & Natural Gamma Probe HMG-453

The HMG-453 probe measures in magnetic channel magnetic susceptibility of rocks down the borehole profile. The susceptibility is an excellent indicator of lithology. In natural gamma channel the total gamma radiation released from potassium and the decay products of uranium and thorium (natural or man-made) ocuring in the formation surrounding the borehole is measured.

The probe can be successfully used in:

Magnetic Susceptibility & Natural Gamma Probe HMG-453

Probe Parameters

Diameter 45 mm
Length 160 cm
Weight 5.5 kg
Max. Working Temperature/Pressure 75°C/20 MPa
Min. No. of Cable Conductors 2
Supply Voltage Range 30 – 45 VDC
Max./Nominal Current Consumption 150/60 mADC
Supply Voltage Polarity + on central cond.
+ on central cond. − on probe casing

Measuring Parameters

Magnetic Channel

Sensor two coil system
Intercoil Spacing 25 cm
Operating Frequency ≈2 kHz
Communication (negative pulse) 0 – 20 000 cps
Measuring range 10−5 – 0.5 SI units
Accuracy < 3% F.S.
Zero Drift < 2.10−5 SI units/10°C

Gamma Radiation Channels

Detector scintilation crystal type NaI(Tl)
  size ø20 × 65 or ø25 × 100mm
Energy range 40 keV − 2700 keV

Note

Probe of diameter 38 mm can also be manu- factured upon special order.
Its measuring parameters are similar to those stated above.

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