Vienna, Sha'ban 18, 1439, May 4, 2018, SPA -- OPEC benchmark basket of fourteen crudes stood at $70.66 a barrel on Thursday, compared with $70.47 the previous day, according to OPEC Secretariat calculations, WAM reported. The fourteen crudes are from separate OPEC member states, includes a mix of blends and light and heavy crudes. -- SPA 20:31 LOCAL TIME 17:31 GMT www.spa.gov.sa/w682275