OPEC agreed on Wednesday to hold its crude production ceiling at 30 million barrels per day despite oversupply concerns and competition from cheaper shale oil. The Organization of Petroleum Exporting Countries, which pumps out about one third of the world's oil, failed again to decide on a new secretary-general amid group tensions, instead keeping Libya's Abdullah El-Badri as its administrative head for 2014. And Libya, where output of crude oil has fallen sharply on unrest in the country, will assume the cartel's rotating presidency for next year, OPEC added in a communique. The cartel, which could see higher production from its members Iran, Iraq and Libya in coming months, nevertheless faces competition from non-OPEC producers of shale oil.