(EnergyAsia, July 20, Friday) — PetroChina Company Limited said its first half 2007 crude output edged up by 0.1% to 419 million barrels over the same period last year.Output of marketable natural gas reached 798 billion cubic feet, representing an increase of 113.3 billion cubic feet, or 16.5%. Production began at the new Tarim Yingmaili…