China's Big Oil Might Do Something Rare: Write Down Assets

  • Low crude price may force explorers to report impairment loss
  • Cnooc, PetroChina present buying opportunity: Macquarie

Oil Market Driver: Supply, Demand, or Production Cost?

PetroChina Co., the country’s biggest oil and gas producer, and China’s largest offshore explorer Cnooc Ltd., may write down assets following crude’s plunge, analysts say.

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