An oil leak in Kansas detected Wednesday evening prompted TC Energy Corp. to shut down its 600,000 b/d Keystone Pipeline, which transports Canadian crude south to the Midwest and Gulf of Mexico.

TC Energy

“The affected segment has been isolated, and booms deployed to control downstream migration of the release,” TC officials stated Thursday. “The system remains shut down as our crews actively respond and work to contain and recover the oil.”

The Calgary-based company was “proceeding to make appropriate notifications, including to our customers and regulators, and will work cooperatively with third parties to effectively respond to this incident. 

“Our primary focus right now is the health and safety of onsite staff and personnel, the surrounding community, and mitigating...