Vienna - The price for crude oil produced by the Organization of the Petroleum Exporting Countries (OPEC) nudged only slightly upwards on Friday, OPEC said in a statement on Monday.

One barrel (159 litres) of OPEC-produced crude stood at 122.63 dollars Friday, an increase of 0.21 dollars compared with 122.42 on the previous day.

OPEC calculates an average basket price based on 13 important brands produced by cartel members. (dpa)