Hydrogeological Logging System Water Well Logging Tool Geophysical Well Logs Subsurface Electrical Well Logging System Borehole Geophysical Log Tools
The Hydrogeological Logging System, also known as a Water Well Logging Tool or Borehole Geophysical Log Tools, is a specialized set of instruments used for logging and assessing water wells and boreholes. These tools provide valuable information about the subsurface geology, hydrogeology, and water quality, aiding in the characterization and management of groundwater resources. They play a crucial role in hydrogeological studies, environmental monitoring, and water resource management.
Usually geophysical logs include caliper, gamma, single-point resistance, spontaneous potential, normal resistivity, electromagnetic induction, fluid resistivity, temperature, flowmeter, and acoustic.
| NO |
Model/ Name |
Parameter to Measure |
| 1 |
JDX-2Dr Resistivity & Gamma Probe |
SP, Apparent Resistivity, Natural Gamma |
| 2 |
JDX-3Dr Combined Probe |
16"/64"Resistivity, SP, Natural Gamma, Temperature, SPR |
| 3 |
JJH-2 Res/IP Probe |
16"/64"Resistivity, SP, IP |
| 4 |
JCX3- GMD Laterolog & Gamma |
Laterolog-3 Resistivity, Natural Gamma, SP |
| 5 |
JCC-2A Three- component Magnetometer |
Magnetic Tri-component |
| 6 |
JWY-1 Temperature & Fluid Resistivity |
Temperature, Fluid Resistivity |
| 7 |
JWL-2W Flow Combined Probe |
Temperature, Water Level, Flow |
| 8 |
JCH-2 Magnetic Susceptibility Probe |
Susceptibility |
| 9 |
JJX-3DA High Precision Inclination Probe |
Vertex Angle, Azimuth |
| 10 |
JJY-3D Three -Arm Caliper |
Diameter, Liquid level |
| 11 |
JSS-3 Probe |
Density, Laterolog Resistivity, Natural Gamma, SP, Caliper |
| 12 |
JMZD-2D Combined Density Probe |
Density, Laterolog Resistivity, Natural Gamma, SP, Caliper |
| 13 |
JMZD-2D Combined Density Probe |
Natural Gamma, Porosity |
Mineral Exploration: These tools are extensively used in mineral exploration to identify and delineate potential ore bodies. By measuring the resistivity and IP responses of subsurface formations, they help geologists map mineralized zones, locate valuable deposits, and assess their extent and continuity. This information aids in making informed decisions during exploration campaigns and resource estimation.
Environmental and Engineering Investigations: The systems play a crucial role in environmental and engineering studies. They assist in mapping subsurface water resources, monitoring groundwater contamination, and assessing soil and rock properties. The 2D/3D imaging capabilities help visualize and characterize subsurface structures, such as aquifers, geological barriers, and contamination plumes, aiding in effective environmental management and engineering design.
Geotechnical Engineering: The tools are utilized in geotechnical engineering for site characterization, foundation design, and slope stability analysis. The resistivity and IP imaging systems help identify subsurface variations in soil and rock properties, detect geotechnical hazards, and assess the integrity of geological structures. This information is crucial for ensuring the safety and stability of infrastructure projects.
Archaeological Surveys: The resistivity and IP imaging tools are valuable in non-invasive archaeological surveys. They aid in locating buried structures, ancient artifacts, and cultural heritage sites by mapping subsurface resistivity contrasts. This non-destructive approach contributes to preserving archaeological sites while providing valuable information for researchers and archaeologists.
Groundwater Management: The systems are employed in groundwater management studies to assess aquifer properties, monitor water table fluctuations, and detect potential sources of contamination. The resistivity and IP imaging capabilities allow for detailed subsurface characterization, aiding in sustainable groundwater resource management and protection.
Geologic Hazard Assessment: The resistivity and IP imaging tools contribute to geologic hazard assessment, including the identification of subsurface faults, landslide-prone areas, and potential sinkholes. The imaging systems provide valuable information on subsurface structures and material properties, assisting in hazard mitigation and land-use planning.
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Ordinary resistivity logging is to put an ordinary electrode system (composed of three electrodes) into the well, and measure the curve of the rock resistivity change in the well. When measuring the formation resistivity, it is affected by factors such as well diameter, mud resistivity, upper and lower surrounding rocks and electrode distance. The measured parameters are not equal to the true resistivity of the formation, but are called the apparent resistivity of the formation. Therefore, ordinary resistivity logging is also called apparent resistivity logging.
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