The company said Mya North, where four production were drilled a year ago, is producing 120 MMscfd.
By yearend 2014, drilling of production wells will be complete in the Shwe complex, Daewoo said. Production then will be an estimated 500 MMscfd.
China National Petroleum Corp. buys the gas for use in Myanmar and carries it through subsea and onshore pipelines.
The company estimates reserves in Shwe, Shwe Phyu, and Mya fields at 4.3 tcf of gas.
Daewoo holds a 51% interest in the project. Other interests are India’s Oil & Natural Gas Corp., 17%; Myanmar Oil & Gas Enterprise, 15%; and GAIL (India) Ltd. and Korea Gas Corp., 8.5% each.