The Chevron well log he is referring to. http://api.ning.com/files/GFXfFkqHX*xmRfFlXIDoTYSLPVsDH1ufMAEd1-*Brtsi7FkRYdU6tPRQPe79QpgWMLwadzEfM6GWg0Xp5N8xAyEaJ03M0hsT/chevron_well.pdf