Vienna  - The price for oil produced by the Organization of the Petroleum Exporting Countries (OPEC) gained 0.50 dollars Thursday but stayed below the 39-dollar mark, the Vienna-based cartel announced Friday.

One barrel (159 litres) of OPEC-produced crude stood at 38.64 dollars Thursday, up from 38.14 dollars on the previous day.

OPEC calculates a basket price based on 12 brands produced by its members. (dpa)