External transmission of pipeline gas from CNOOC Yancheng “Green Energy Port”, the largest LNG storage facility in China

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On December 16, the pipeline gas supply system at China National Offshore Oil Corporation’s Yancheng “Green Energy Port” was put into operation. China’s largest liquefied natural gas (LNG) storage facility has now entered a phase of stable and continuous pipeline gas supply to the outside world; it can supply over 2.6 billion cubic meters of gas per year. This will further ensure energy supply in the Jiangsu and Anhui provinces, and it is of great significance for diversifying natural gas supply channels in the East China region as well as for using natural gas reserves to stabilize supply during peak periods. 　On the first day of operation, the \"Green Energy Port\" in Yancheng, operated by China National Offshore Oil Corporation, transported approximately 2.41 million cubic meters of natural gas through pipelines; this gas was sent to 42 city gas customers in Jiangsu and Anhui provinces via pipelines connecting these two provinces. 　　“The LNG stored at the \"Green Energy Port\" is transported externally mainly in gaseous form via pipelines and in liquid form using tankers. Following the first shipment of LNG in liquid form by tankers on November 3, the accompanying pipeline system, the Su-Wan Pipeline, was officially put into operation on December 11. 　　As a key project under the plan to develop infrastructure for the production, supply, storage, and distribution of natural gas as well as to ensure interconnection between various systems, the first phase of CNOOC’s Yancheng \"Green Energy Port\" involves the construction of 10 large-scale liquefied natural gas storage tanks. Of these, 4 tanks with a capacity of 220,000 cubic meters were put into use on September 26 this year, while the 6 largest tanks in the world, with a capacity of 270,000 cubic meters each, will be completed and operational by the end of 2023. The pipeline gas exported this time comes from 4 storage tanks with a capacity of 220,000 cubic meters each; the annual volume of gas transported via pipelines amounts to 2 million tons, providing 2.67 billion cubic meters of gas per year.