One of Canada’s top energy analysts has warned investors and geologists that “the shale revolution” will not meet conventional expectations as a so-called game-changer in energy production. Speaking at the Denver meeting of the Geological Society of America and later at Queen’s University and an energy conference in Toronto, David Hughes challenged the assumptions of industry cheerleaders by spelling out startling depletion rates for high-cost unconventional shale and tight oil wells. “The shale revolution has been a game-changer in that it has temporarily reversed a terminal decline in supplies from conventional sources,” said Hughes in both talks given in late October and early November. “Long-term sustainability is questionable and environmental impacts are a major concern.” The geoscientist, who now […]