Last year, its oil and gas output reached 57.03 million tonnes of oil equivalent, the seventh consecutive year that production reached the 50-million-tonne level, said Fu Suotang, general manager of PetroChina Changqing Oilfield Company.
The oil and gas fields of Changqing Oilfield cover Shaanxi, Gansu and Shanxi provinces as well as Ningxia Hui Autonomous Region and Inner Mongolia Autonomous Region.
The huge amount of crude oil and natural gas produced since the firm's establishment in 1970 has played an important role in safeguarding the country's energy security. The company has applied new technologies to boost production and extend the life cycle of crude oil and natural gas wells.
Changqing Oilfield has so far sent over 420 billion cubic meters of natural gas to more than 40 large and medium-sized Chinese cities including Beijing and Xi'an, helping reduce carbon emissions by around 600 million tonnes, Fu said.