Original PetroSkills Well Log Interpretation (WLI) professional training manual/binder used for petroleum engineering and petrophysics training.

Includes extensive course material, charts, well logs, exercises, reference tables, and tabbed sections covering topics such as:

* Electrical Properties

* Resistivity Tools

* SP

* Gamma Ray

* Mineralogy

* Formation Factor

* Shale Conductivity

* Rw

* SGR / PE

* Well Log Interpretation

This is a substantial professional training binder with large-format log sheets and course exercises.