Crude oil prices stabilized on Tuesday due to firm demand after dipping in early trade on expectations that OPEC would not cut output at its meeting this week. The Organization of the Petroleum Exporting Countries (OPEC) meets this Friday in Vienna to discuss its production strategy, with U.S. bank Citi saying the group was likely to maintain current production. Prices were supported as Saudi oil minister Ali al-Naimi said overnight that demand would pick up and tighten the market in the second half of the year.