Heavy Western Canadian Select for delivery in April was trading at $11.70 less per barrel than U.S. benchmark West Texas Intermediate on March 10, according to people familiar with prices.

Discover why the US-Canada economic relationship, rooted in oil, autos, and lumber, makes decoupling costly. Learn how trade ties impact both nations.

Canadian Natural's quarterly output rose to a record 1.58 million barrels of oil equivalent per day during the first quarter, from 1.33 million boepd during the same period a year earlier.

LONDON, March 27 - Canadian oil producers selling crude to U.S. refiners are enjoying a significant windfall, and they have one man to thank: President Donald Trump. Following weeks of trade ...

Canadian heavy crude oil is critical for U.S. refineries, particularly in the Midwest, where infrastructure is tailored to process this type of oil.