Brunei Darussalam 22 April 2013 The Billionth Barrel Monument – The area was built in 1991 to commemorate the production of billionth barrel of oil in the onshore oil field located in Seria, a town in the Belait District of Brunei. It was built close to Seria-1 (S-1) which was the first commercially viable oil continue reading : Advancer#3 2013 ASEAN Summit – Brunei Darussalam