Abstract
The evolution of log analysis methods over the past seventy years is a fascinating and illuminating subject. We can learn a great deal by observing the gradual changes, as well as the sudden leaps forward that have occurred. It is, of course, fairly easy to predict gradual changes, but only the lucky person could predict the next great advance in petrophysical analysis. The major buzzwords of the near future are imaging, resolution, and integration. A buzzword from the past, artificial intelligence, still haunts us with its lack of success.