Smoke rises from Iraqi refinery al-Shouayba in Basra at sunset reflected in an Oil field in Basra June 10, 2003. Oil prices held firm near 12-week highs on Tuesday, a day ahead of an OPEC producer cartel meeting that is expected to postpone fresh supply cuts. OPEC ministers meeting in the Middle East emirate of Qatar on Wednesday are widely expected to leave production limits unchanged as delays in the resumption of Iraq's oil exports have kept global supply tight.