The price of OPEC's basket of thirteen crudes stood at US$52.78 a barrel on Tuesday, compared with US$53.77 the previous day, according to OPEC Secretariat calculations.

The OPEC Reference Basket of Crudes is made up of the following: Murban (UAE), Saharan Blend (Algeria), Girassol (Angola), Oriente (Ecuador), 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) and Merey (Venezuela).