A new shale gas field in the Sichuan basin contains as much as 146 billion cubic meters (bcm) of certified proven natural gas reserves, Chinese state energy giant Sinopec said on Thursday. The shale gas reserves at the Qijiang shale field in the southwestern Chinese province of Sichuan are mostly found at 3,500 meters (11,483 feet) underground, according to a Sinopec statement carried by Xinhua. The much deeper location of the shale gas reserves in China makes extraction much more challenging than in the U.S., for example. …