PTR [PETROCHINA CO] CORRESP: October 9, 2012 H. Roger Schwall Jennifer OBrien
[October 9, 2012 H. Roger Schwall Jennifer OBrien Ethan Horowitz Division of Corporate Finance 100 F Street, NE Re: PetroChina Company Limited Form 20-F for Fiscal Year Ended December 31, 2011 Filed April 26, 2012 Comment Letter Dated September 21, 2012 File No. 001-15006 Dear Mr. Schwall, Ms. OBrien and Mr. Horowitz: Should you have any additional questions or require]