Aug 31 - By Rob Gillies, Associated Press Writer
PetroChina Co., Asia's largest oil and gas company, is making a $1.7 billion investment in the Canadian oil sands.
Aug 19 - By Rod McGuirk, Associated Press Writer
Australia gave final approval Wednesday for a natural gas field development that will export $41 billion in energy to China over 20 years.
Aug 27 - By Elaine Kurtenbach, AP Business Writer
Earnings results announced Wednesday by major Chinese oil companies were in line with expectations, with industry leader PetroChina's first-half net profit falling 34.5 percent amid rising losses in its refining business.
Aug 25 - By Elaine Kurtenbach, AP Business Writer
PetroChina is expected to report that its first-half net profit fell by at least a third, analysts say, as losses in its refining business eroded gains from surging crude oil prices.

Nov 4 - By Associated Press
PetroChina became the world's first company worth more than $1 trillion on Monday, surging past Exxon Mobil as the Chinese oil producer's shares nearly tripled in their first day of trading in China.
Oct 21 - By Associated Press
In an Oct. 18 story about Warren Buffet confirming sales of shares in PetroChina Co., The Associated Press misstated the 2003 stock price when Buffett's company, Berkshire Hathaway Inc., invested $488 million. The shares traded at $20 to $57 in 2003, not at $140.78, the price in late 2006.