Petroleum Undersecretary Dr. Santino Ayuel Longer says technology, new drilling, and field upgrades are driving South Sudan's oil resurgence (Photo Credit: Pan African Visions) By Deng Machol South Sudan’s oil industry has recorded its strongest production performance in nearly two decades, with the Greater Pioneer Operating Company (GPOC) increasing crude oil output to 60,158 barrels per day—the highest level achieved since 2005.