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China discovers first ultra-deep shale gas field with over 235 bcm reserves_蜘蛛资讯网

p;Sinopec said the project faced major technical challenges, including unclear reservoir characteristics, uncertain gas accumulation mechanisms, and difficult drilling conditions caused by high temper

to media reports.    State-owned oil giant Sinopec said the Ministry of Natural Resources had certified the reserves at the Ziyang Dongfeng shale gas field.    

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