A local farmer looks at a natural gas appraisal well of Sinopec as she works in her vegetable fields in Langzhong county, Sichuan province in this March 1, 2011 file photo. Picture taken March 1, ... more 
A local farmer looks at a natural gas appraisal well of Sinopec as she works in her vegetable fields in Langzhong county, Sichuan province in this March 1, 2011 file photo. Picture taken March 1, 2011. To match Special Report CNOOC-NEXEN/ REUTERS/Stringer/Files (CHINA - Tags: BUSINESS ENERGY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA less 
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Reuters | Photo By STRINGER / REUTERS
Sun, Oct 6, 2013 8:08 PM EDT