- BOOM! Iran, IAEA extend agreement in a boost to Vienna nuclear talks! President: Iran to Continue Vienna Talks until Final Deal! - As of May 23, Petrolera Sinovensa's blending plants, operated by a joint venture between PDVSA and China National Petroleum Corp for converting extra-heavy crude from Venezuela's Orinoco oil belt into exportable Merey crude, were processing 139,000 barrels per day, the document showed.