By Amanda Stephenson CALGARY (Reuters) -Wildfires burning in Canada's oil-producing province of Alberta have affected more than 344,000 barrels per day of oil sands production, or about 7% of the country's overall crude oil output,

The Caribou Lake fire in northeastern Alberta has temporarily shut down some oilsands operations. Companies say the fire, which covers roughly 61,500 hectares, has cut seven per cent of Canada’s total oil production at a time when crude oil supplies are already strained.

Major Canadian oil and gas firms Cenovus Energy, Meg Energy, and Canadian Natural Resources have all shut some of their operations in the top oil-producing province.