Downhole Logging

Downhole Logging (or Borehole Logging) refers to the collection of geologic and hydrologic information by lowering and raising probes on a wire. This method provides a means of evaluating various properties of subsurface rocks, soils and fluids. Probes measuring various, specific properties collect either continuous or point data while they are lowered into boreholes. During logging, data is both presented graphically in real-time, and recorded digitally for subsequent review and analysis. Providing critical information not available through other means of investigation, the use of borehole probes is common for many applications including groundwater and natural resource exploration, and environmental characterization.

Geophysical characaterization with this method can reveal fractures and water-bearing zones, structural features, lithology, aquifer features and groundwater flow systems.