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toe-to-heel, Tag
- EROI Update: Preliminary Results using Toe-to-Heel Air Injection Thu, 19 Mar 09, 12:27amIn August 2007, a post titled Extracting Heavy Oil: Using Toe to Heel Air Injection (THAI) introduced readers of The Oil Drum to a technology for producing an upgraded extra-heavy oil from Alberta Tar Sands without the environmentally...