Oh, okay. When you wrote "global emissions" I was thinking you were extrapolating to the entire world.
And yes, tons and tons of NG is used for oilsands extraction.
Quote:
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Approximately 48 per cent of Alberta’s natural gas production is consumed here in Alberta. Alberta's residential and commercial sectors account for 17 per cent of the province's marketable natural gas consumed in Alberta for home and business heating. The remaining 83 per cent of natural gas consumed in Alberta is used by the industrial, electricity generation, transportation, and other sectors. Natural gas is also an important raw material for the province’s oil sands and electric power generation industries.
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So yeah... Your piddly home furnace is rather immaterial to the whole discussion.