American Association of Petroleum Geologists (AAPG)
Not oil, not shale, but a huge resource! Industry interest in developing oil shale production technology rises and falls with oil prices and the availability of cheaper options. Shale oil in formations like the Bakken is currently more economically attractive and less risky. Chevron, Shell and Exxon-Mobil have ended their oil shale projects in the past year, but Red Leaf Resources is moving ahead.