JJY-3D Borehole Logs Explained Borehole SPR Logging Equipment
JJY-3D Natural Gamma & Electrical Resistivity probe
Product Description
This advanced probe measures multiple parameters-natural gamma radiation, gradient and normal resistivity, and spontaneous potential (SP)-all at once. By collecting resistivity data from various depths, it provides essential insights into key geological features. Users can assess permeability, porosity, water quality, and the characteristics of subsurface formations with greater accuracy. The probe's multifunctional capabilities enhance the depth and breadth of subsurface analysis, delivering comprehensive data for a wide range of applications.
Product Parameters
Instrument power supply |
DC200V±20%,Electricity≤40mA |
Electrode array |
N 0.6 M2 1.3 M1 0.3 A |
Natural gamma sensor |
NaI Crystal |
Measuring range |
Apparent resistivity:1~4000Ωm(customize10000Ωm) Spontaneous potential (SP):±1200mV |
Measurement accuracy |
2%(10~4000Ωm)or ±1Ω |
Natural gamma |
0~32768cps |
Parameters of Borehole Geophysics Logging
Water Well Logging Equipment, Geo Logging Equipment
12bit A/D Conversion, Program-Controlled Magnification |
K=0.5~128 |
Counting Channel |
f≤500KHz |
Digital Signal Transmission Frequency |
9600bit/s |
Power Supply Cycle |
400ms |
Current |
2mA~500 mA Optional |
Signal Input Range |
≤±10V |
Continuous Working Time |
≤24 hr |
Power Consumption |
<200W |
Volume |
420×260×210mm |
Weight |
<7Kg |
Working Temperature Range |
-10ºC~ +50ºC |
Working Power Supply |
AC220V±10% 50Hz ±5% |
Logging Speed |
0~30 m/min Adjustable (as per sampling interval) |
System Composition of Borehole Geophysics Logging
Water Well Logging Equipment, Geo Logging Equipment
No. |
Name |
Qty |
1 |
GDQ-2D Logging System Box |
1 |
2 |
Well Logging Probe |
1 |
3 |
Logging Winch and Logging Cable |
1 |
4 |
Drilling Mouth Pulley |
1 |
5 |
Depth Encoder |
1 |
6 |
Laptop (Optional) Printer (Optional) |
1 |
The probes of Borehole Logging Downhole Caliper Logging Groundwater Logging Borehole Gamma Logger Water Well Logging System
Model/ Name |
Parameter to measure |
JDX-2Dr Resistivity & Gamma probe |
SP, Apparent resistivity, natural gamma |
JDX-3Dr Combined probe |
16"/64"resistivity, SP, natural gamma, temperature, SPR |
JJH-2 Res/IP probe |
16"/64"resistivity, SP, IP |
JCX3-GMD Laterology & Gamma |
Laterology-3 resistivity, natural gamma, SP |
JCC-2A Three-component magnetometer |
Magnetic Tri-component |
JCH-2 Magnetic susceptibility probe |
Susceptibility |
JWY-1 Temperature & Fluid resistivity |
Temperature, fluid resistivity |
JWL-2W Flow Combined probe |
Temperature, water level, flow |
JJX-3DA High precision inclination probe |
Vertex angle, azimuth |
JJY-3D Three-arm caliper |
Diameter, liquid level |
JSS-3 Sonic probe |
Travel-time, Equation of time, Amplitude1, Amplitude2 |
JMZD-2D Combined density probe |
Density, laterology,resisitivity, natural gamma, SP, caliper |
JZZ-3 Neutron & gamma probe |
Natural gamma, porosity |

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