Canadian Natural Resources Limited explores for, develops, produces, and markets crude oil, natural gas, and natural gas liquids (NGLs). The company offers light and medium crude oil, primary heavy crude oil, Pelican Lake heavy crude oil, bitumen, and synthetic crude oil (SCO). Its midstream assets include two crude oil pipeline systems; and a 50% working interest in an 84-megawatt cogeneration plant at Primrose. As of December 31, 2017, the company's gross proved crude oil, bitumen, SCO, and NGLs reserves totaled 7,742 million barrels; gross proved plus probable crude oil, bitumen, SCO, and NGLs reserves totaled 10,263 million barrels; proved natural gas reserves totaled 6,771 billion cubic feet; and gross proved plus probable natural gas reserves totaled 9,619 billion cubic feet. It operates primarily in Western Canada; the United Kingdom portion of the North Sea; and CÃ´te d'Ivoire, Gabon, and South Africa in Offshore Africa. The company was formerly known as AEX Minerals Corporation and changed its name to Canadian Natural Resources Limited in December 1975. Canadian Natural Resources Limited was founded in 1973 and is headquartered in Calgary, Canada.