Well Logging Tools Principles | Session 2 of 5 | Foundation of Petrophysics

The logs are talking—but do we understand what they’re saying? In Session 2 of the Foundation of Petrophysics and Open Hole Logging Evaluation series, we go beyond recognizing log curves and explore the principles behind common well logging tools. Every tool sends a signal into the well, and the formation responds according to its properties. Understanding that relationship helps us interpret why a curve changes—not just what it looks like. In this session: • The principles behind common well logging tools • How formation properties influence tool responses • The connection between formation properties and logging measurements • How to understand the logic behind a log curve In Session 1, we introduced Open Hole Logging and discussed why logs matter. Now, we take the next step: understanding how logging tools work and how formations shape the responses we see. Part of the “Foundation of Petrophysics and Open Hole Logging Evaluation” series — a five-session, step-by-step learning journey. Ready to look beyond the curves? Subscribe to GeoHub and explore more geoscience learning sessions. #WellLogging #Petrophysics #OpenHoleLogging