Western Canadian Select - Wikipedia
2 days ago · Western Canadian Select (WCS) is a heavy sour blend of crude oil that is one of North America's largest heavy crude oil streams. It was established in December 2004 as a new heavy oil stream by EnCana (now Cenovus Energy Inc.), Canadian Natural Resources Limited, Petro-Canada (now Suncor) and Talisman Energy Inc. (now Repsol Oil & Gas Canada Inc.). It is a heavy blended crude …
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