HARBIN -- The oil and gas output of Daqing Oilfield Co Ltd stood at 10.61 million metric tons of oil equivalent in the first quarter of 2022, the company said Tuesday.

Daqing Oilfield, located in Northeast China's Heilongjiang province, is one of the country's largest oil production bases. Last year, the company's oil and gas output reached 43.22 million tons of oil equivalent.

Despite increasing difficulties in exploitation, the company is aiming to produce more than 40 million tons of oil equivalent this year to ensure China's energy security.

Discovered in 1959, the oilfield has made a significant contribution to China's modern petroleum industry system.