26-09-02 The oil exploration in Longdong area of Gansu Province makes a big step. A 100-mm-ton class large oil field is found in the northeast of Xifeng City, Gansu Province.
Longdong area is the main producing area of Changqing oil field.

Xifeng oil field is the result of 3 years' effort of Changqing. The preliminary proved reserves is 61.32 mm tons, the controlled reserves is 134 mm tons, and the prospective reserves is 115 mm tons. The three add up to 310 mm tons.