Brent crude futures rose 36 cents or 0.4% to $81.57 per barrel by 0109 GMT. West Texas Intermediate futures rose 25 cents, or 0.3%, to $76.36 per barrel.
Brent crude futures rose 36 cents or 0.4% to $81.57 per barrel by 0109 GMT. West Texas Intermediate futures rose 25 cents, or 0.3%, to $76.36 per barrel.