The price of OPEC benchmark basket comprising 14 crudes stood, at $67.17 a barrel, on Friday, compared to $67.38 the previous day, according to OPEC Secretariat calculations, according to the Emirates' news agency WAM. OPEC reference basket is made up of the following member states' crudes: Murban (Emirates), Saharan Blend (Algeria), Girassol (Angola), Oriente (Ecuador), Zafiro (Equatorial 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), and Merey (Venezuela).