Consideration and Technical Feasibility Research of Multi-source Collaborative Gas Supply in China

In recent years, due to the impact of COVID-19, international geopolitics, market supply and demand, the international DES spot price of liquefied natural gas (LNG) has fluctuated dramatically. At the same time, China's imported LNG accounts for about 65% of total imported gas. To minimize the impact of international prices on China, the idea of a “multi-source collaborative gas supply” was proposed by LNG terminal, underground gas storage (UGS), and domestic produced gas. To study the feasibility of a “multi-source collaborative supply”, the domestic gas infrastructure construction and pipeline connectivity, gas well production system, underground gas storage capacity and other aspects of collaborative supply technical feasibility were analyzed. The idea of a multi-source collaborative supply and gas resource swap was put forward, and from this, the full life cycle management of “production, injection, storage and sale” of high-quality gas reservoirs could be realized. It also provided ideas for integrating gas field development and UGS construction, which can avoid the repeated construction of UGS after gas reservoir exhaustion and improve China’s ability to ensure a long-term stable supply of gas.