Canada produced a total of about 6.05 billion GJ of natural gas in 2010.  Although most of this supply was conventional, it's expected that the production of unconventionals such as offshore gas, shale gas and coalbed methane (CBM) will predominate in the future. They're called "unconventional" because they're produced or extracted using techniques other than the traditional gas well method.
New Brunswick began producing natural gas in 1909, but production had ceased until a new field near Sussex began producing commercial quantities in 2007. Production of natural gas from LNG imports commenced in 2008.
We export about half of our production to the US. From an American perspective, Canada represents their single largest source of natural gas imports (90% in 2008).