China's largest offshore gas field produces 4.5M-tonnes oil equivalent in 2025

This undated file photo shows a shuttle oil tanker connecting with the Deep Sea No. 1 energy station for oil transportation. China's largest offshore gas field, named Deep Sea No. 1, has recently completed its 100th shipment of crude oil since being put into production, announced the China National Offshore Oil Corporation (CNOOC) on Friday.

The field's total oil and gas output in 2025 exceeded 4.5 million tonnes of oil equivalent, comparable to that of a medium-sized onshore oilfield. (CNOOC/Handout via Xinhua)