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CNPC said it aims to produced one million tonnes of oil annually by 2025 from the Gulong shale oil formations at Daqing in northeast China’s Heilongjiang province. Already a subscriber? Log in.

CNPC's Daqing Oil Field, one of China's oldest, has been in production for 65 years and production water cut has reached 80-90%.

The new drilling technology and short drilling cycle will effectively lower extraction costs of shale oil from Daqing Oil Field, ensuring national energy security, said Du Lei, a project manager ...

In particular, Daqing oil field has been operating for more than 60 years but still produced 30 million tons of oil in 2023, more than 25% of the firm’s total domestic output.

A go-ahead for a long-delayed $9.4 billion drilling project is expected to support the oil industry and provide energy security, but environmental advocates were outraged.

In terms of the world's largest oil fields, some of the largest oil fields have already produced a lot of oil like China's Daqing Field which began full scale production in 1963.

PetroChina, which operates the Daqing oil field, didn’t immediately respond to an email seeking comment on Sunday outside of regular business hours.