The March OSP is $2.25 higher than the previous month.

That puts Murban's March OSP premium to Dubai quotes at $1.67 a barrel, 10 cents less than the previous month.

For other grades, the producer raised Umm Lulu's March OSP premium to Dubai quotes by 10 cents, while it cut the premium for Das crude by 1 cent.

The cuts on the premiums for Murban and Das were smaller than expected, traders said, as the grades traded at discounts of 10-20 cents a barrel last month.

Upper Zakum's March OSP premium to Dubai quotes fell by 5 cents, in line with expectations.