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Alberta Oil Sands Technology & Research Authority (Aostra) has begun studying a commercial project for bitumen production using steam assisted gravity drainage techniques developed at its underground test facility (UTF) in northern Alberta.
Aostra's project focuses on the Athabasca oilsands deposit. It uses paired horizontal wells with steam injected in one well and bitumen produced from the other (OGJ, July 15, 1991, p. 31).
A proof of concept pilot phase at the UTF was Completed last year that showed the technique is competitive with conventional bitumen recovery at a scale of 20,00-40,000 b/d. Aostra is producing 2,000 b/d in a demonstration phase, …