Lecture 52: Groundwater Exploration - 14 - Hydrogeological Well Logging

This lecture extends the discussion on hydrogeological well logging and its methods. Observations from drilling are documented in logs, which can be enhanced with electric and geophysical logging techniques to provide a detailed picture of subsurface conditions. Electric logging measures resistivity and spontaneous potential to evaluate formation characteristics, while resistivity logging specifically measures how rocks resist electrical current to infer porosity and water salinity. Geophysical logging uses sensors to record parameters such as resistivity and temperature, contributing to a comprehensive understanding of the borehole's hydrogeology. These logs are crucial for interpreting formation boundaries, water quality, and the overall geology of the well.