Natural gas output from the Sulige field, China's largest by reserves, will top 10 billion cubic metres (bcm) this year, a former PetroChina executive said.
Gas output from the field, which contains mostly tight gas deposits, would rise to 25 bcm by 2015, Hu Wenrui, former vice-president of PetroChina, told an industry forum in Beijing.
He said gas production in the field, which supplies mostly northern Chinese cities including Beijing and Tianjin, totaled 8 bcm last year.
