OPEC OPEC OPEC's OPEC OPEC OPEC OPEC Organization of Petroleum-Exporting Countries (OPEC) OPEC Organization of Petroleum Exporting Countries OPEC's OPEC OPEC Organization of Petroleum Exporting Countries OPEP OPEC OPEC OPEC OPEC OPEC http://www.investopedia.com/terms/o/opec.asp OPEC OPEC Organization of Petroleum Exporting Countries OPEC OPEC OPEC OPEC OPEC http://www.investopedia.com/terms/o/...#ixzz3zQ02pHxG OPEC