The Duvernay field in Canada’s western province of Alberta holds the country’s largest marketable resources of unconventional light shale oil and condensate, according to a new report from the national energy regulator. It is the first time the National Energy Board has done a detailed study of resources in the 130,000 square kilometer (50,193 square mile) Duvernay play, which covers around 20 percent of Alberta, Canada’s main crude-producing province. The NEB report showed the Duvernay holds 3.4 billion barrels of marketable light oil and condensate and 6.3 billion barrels of natural gas liquids. It also holds nearly 77 trillion cubic feet (Tcf) of natural gas, equivalent to 25 years of Canada’s annual consumption. “This gives markets much more clarity in terms of how much oil and gas is available in the long term,” said Mike Johnson, the NEB’s technical leader of hydrocarbon resources, […]