North Dakota oil output is estimated to be down currently by 50,000 to 80,000 barrels per day due to frigid temperatures, the state regulator said on Thursday.
Oil production had been down 60,000 to 90,000 bpd on Tuesday, owing to the cold weather and operations challenges, said Justin Kringstad, director of North Dakota Pipeline Authority.
(Reporting by Georgina McCartney in Houston; Editing by Chris Reese)