Boasting 178 billion barrels of proven oil reserves and close to 58 Tcf of proven natural gas reserves as of 2009, Canada is the world's largest reserve holder after Saudi Arabia and the top supplier of U.S. energy imports. Canada is also home to the world's most expansive oil sands deposits, the development of which extracts and processes a heavy, tar-like crude bitumen that comprises the bulk of the country's reserves. Canada's oil and natural gas sector is privatized, with industry regulation occurring at the provincial level.
Well servicing and testing refers to activities done to already existing wells. Well interventions, well integrity activities, or general well work are usually classified under well servicing. Well testing is a planned acquisition of data from the reservoir of a well. The data gathered is then used to determine a well’s capacity for producing oil or gas.