The price of OPEC basket of 15 crudes stood at $72.64 a barrel on Thursday, compared to $75.24 the previous day, according to WAM news agency, citing OPEC Secretariat calculations. OPEC Reference Basket (ORB) is made up of the following crudes: Saharan Blend (Algeria), Girassol (Angola), Djeno (Congo), Oriente (Ecuador), Zafiro (Eq. Guinea), Rabi Light (Gabon), Iran Heavy (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).