The number of oil rigs in the country remained unchanged at 627 for the week of November 26 – December 2, according to weekly data released by oilfield services company Baker Hughes.
The number of oil drilling rigs in the USA has increased by 160 in the last year.
The barrel of Brent oil, which closed Thursday at $ 86.88, ended Friday at $ 85.57.
West Texas (WTI) type crude oil closed Friday at $80.30 a barrel. WTI-type crude oil finished at $81.33 on Thursday.