Basically we rely on three sources of crude oil for consumption in Canada: conventional, unconventional (oil sands, off shore oil and shale oil) and imported oil.  British Columbia produces oil in the northeastern region of the province, and the Northwest Territories has two producing oil fields, one at Norman Wells and the other southwest of Hay River.  Click here for production statistics.
Conventional and offshore oil is produced from wells. Oil sands are either surface mined or gathered from underground reservoirs. 
Click here to see a simple diagram of a traditional oil well.
Oil Consumption Canada-Wide
In 2010, production consumed 41,420,030 GJ and emitted 2,702,298 GHG tonnes.