A PetroChina logo is seen at its gas station in Beijing in this August 29, 2013 file photo. A $6.4 billion gas project being built by Chevron in China is facing further delays due to disagreements ... more 
A PetroChina logo is seen at its gas station in Beijing in this August 29, 2013 file photo. A $6.4 billion gas project being built by Chevron in China is facing further delays due to disagreements with partner PetroChina over how to develop the technically tricky fields, three industry sources said. The Chuandongbei project, the U.S. firm's largest investment in China, is now not expected to deliver first gas until the second half of 2014, nearly 7 years after the firms clinched a 30-year deal to produce 7.6 billion cubic metres of gas a year. REUTERS/Kim Kyung-Hoon/Files (CHINA - Tags: BUSINESS ENERGY) less 
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Reuters | Photo By KIM KYUNG-HOON / REUTERS
Fri, Dec 6, 2013 2:48 AM EST