The price of OPEC basket of twelve crudes stood at 104.37 dollars a barrel on Thursday, compared with $105.24 the previous day, according to OPEC Secretariat calculations.The new OPEC Reference Basket of Crudes (ORB) is made up of the following: Saharan Blend (Algeria), Girassol (Angola), Oriente (Ecuador), Iran Heavy(IslamicRepublic of Iran), Basra Light (Iraq), Kuwait Export (Kuwait), Es Sider (Libya), Bonny Light (Nigeria), Qatar Marine (Qatar), Arab Light (Saudi Arabia), Murban (UAE) and Merey (Venezuela).