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.
Duties will vary from onshore to offshore and by rig type, but in general, the Derrickman is a senior member of the drill crew and reports to the Driller. Responsibilities include pipe handling during tripping operations and maintaining and repairing mud pumps and associated equipment while drilling. The Derrickman monitors the properties of drilling fluid being pumped down hole and treats the fluid on a regular basis to maintain those properties.