| The establishment of the Pipe China further promotes the reform of the domestic oil and gas system in depth,and also marks the official implementation of the third-party access system for pipelines in the domestic natural gas industry.With the gradual liberalization of control measures in upstream mining and downstream sales,the domestic natural gas industry will move towards a market-oriented development stage.Starting from the influence of pipeline network independence on the natural gas industry chain,this paper studies the influence of the marketization of natural gas pricing on the natural gas industry chain,and calculates the natural gas industry chain,so as to provide a reference for manufacturers to respond to changes in the industry chain and reconstruct the natural gas value chain.First of all,this paper conducts a comprehensive investigation on the impact of domestic and foreign natural gas pricing mechanisms and pipeline network independence on the natural gas industry chain and the game model,and sorts out the development history of typical foreign natural gas markets in detail and analyzes the domestic natural gas pricing mechanism as a reference.Implementing the third-party access system for pipelines is the key to the development of natural gas marketization.Based on this,the changes brought about by the independence of the pipeline network to the domestic natural gas industry chain are analyzed,and the concept and design of the domestic natural gas marketization operation scheme is carried out.Secondly,it studies the game pricing of the industry chain,uses the Cournot game model and the Stackelberg model to construct a four-oligopoly game model in the domestic upstream market and conducts an equilibrium analysis.The equilibrium solution of the game model shows that: with the entry of new market players,the domestic upstream market competition intensifies,and the market share of each company faces a greater risk of decline.Finally,based on the natural gas value chain model,the research on gas source bidding is carried out.The first is to conduct a unilateral gas benefit analysis of various gas sources at home and abroad.The comparison shows that after the separation of the pipe network,the profit of each manufacturer’s industrial chain will be reduced by more than 60%.The second is to compare the efficiency changes of upstream producers under the door price model of the NDRC and the market-based transaction model.The results show that market-based transactions can better ensure the interests of producers and reflect the relationship between market supply and demand.The third is to analyze the competitiveness of domestic and foreign gas sources in typical markets.The research shows that the competitiveness of domestic gas sources from 2020 to 2025 will increase with the rise of international oil prices. |