(Adds details on discovery)
MEXICO CITY, Nov 3 (Reuters) - Mexico's national oil company Pemex has made its biggest onshore oil discovery in fifteen years with a find in the eastern state of Veracruz, President Enrique Pena Nieto said on Friday.
Pena Nieto said Pemex made the discovery by drilling its onshore Ixachi well, in the municipality of Cosamaloapan, and that the overall field is believed to hold some 350 million barrels of proven, probable and possible reserves.
Pena Nieto, who pushed through Congress a sweeping energy reform in 2013 that ended Pemex' decades-long monopoly, made the announcement at the company's Tula refinery.
He was flanked by his energy minister, Pemex' chief executive and a range of other government and union officials.
The announcement confirmed a Reuters story from earlier on Friday. The onshore field's original volume in place is estimated at 1.5 billion barrels of oil equivalent.
The light oil field should begin producing sooner as it is located where infrastructure already exists, Pemex said in a statement following the announcement, adding that the find could double in size.
The company said the discovery is similar in size to the field associated with the Zama well announced in July by Britain's Premier Oil, along with partners, U.S.-based Talos Energy and Mexico's Sierra Oil and Gas. (Additional reporting by David Alire Garcia; editing by Dave Graham and Marguerita Choy)