Brent rose 45 cents, 0.5%, to $83.90 a barrel, WTI gained 42 cents, or 0.6%, to $77.47 a barrel.

Brent were down 30 cents, or 0.36%, at $82.86 a barrel, WTI traded at $76.09 a barrel.

Brent fell 30 cents to $82.75 a barrel, WTI dropped by 38 cents to $75.98 a barrel.

Brent rose 70 cents, or 0.8%, to $83.70 a barrel, WTI was at $76.89 a barrel.

Brent dropped 96 cents, or 1.13%, to $84.18 per barrel, WTI shed 97 cents, a 1.24% loss, to $77.52.

In October, OPEC and its partners took the unusual step of assigning fixed production targets for a full year ahead. Key officials have indicated they intend to leave the quotas unchanged throughout 2023, and the comments from Prince Abdulaziz bin Salman are the most emphatic to date.

Brent slid $1.13, or 1.3%, to $84.45 a barrel, WTI dropped $1.31, or 1.7% to $77.75.

Brent fell 86 cents, or 1%, to $85.53 a barrel, WTI was at $78.83 a barrel, down 89 cents, or 1.1%.

Brent rose $2.17, or 2.57%, to $86.67 a barrel, WTI were up $2.01, or 2.57%, at $80.07.

Moscow’s move deepens the 2 million barrel-a-day production cut announced late last year by OPEC+, which Russia leads along with Saudi Arabia.