PetroChina Co, the nation's largest oil producer, has developed
technology to exploit more than one billion metric tons of oil
reserves at Daqing, its largest and oldest field, its parent
The so-called "well-fracturing" method will help PetroChina
drill reserves at Changyuan in Daqing, in Liaoning Province, parent
China National Petroleum Corp said in a statement in its newsletter
China Oil News yesterday.
(Shanghai Daily January 3, 2008)