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天然气销售是各石油公司业务的重要组成部分,天然气销售业务的盈利状况也会在很大程度上影响到石油公司的整体利润水平。由于目前我国天然气进口价格与国内销售价格倒挂,各石油公司进口天然气业务面临严重亏损,且随着国内天然气价格改革不断推进,天然气销售公司如何提高其经济效益便成为重要问题。为此,以天然气销售公司经济利润最大化为目标,在满足各省天然气最低消费量且不超过各省最大利用能力的条件下,依据国家新出台的天然气价格政策,建立了销售公司的省际销售优化模型,并以中国石油的一条西气东输干线为例对该模型进行了检验。结果表明:线性规划方法是解决天然气销售公司省际销售的科学可行的方法,模型的优化结果能够为天然气销售公司提供有效的决策支持,具有很强的实用性。未来,该研究方法可以进一步扩展到天然气在各省范围内的各地区间和用户间的优化销售,此外,该方法还可以应用于分析其他资源的省际优化销售问题。
Natural gas sales are an important part of the business of oil companies. The profitability of natural gas sales business will also affect the overall profitability of oil companies to a large extent. Due to the current upside import price of natural gas in China and the domestic sales price, the natural gas import business of various oil companies is facing serious losses. With the continuous reform of domestic natural gas prices, how natural gas sales companies have raised their economic efficiency has become an important issue. To this end, to maximize the economic profit of natural gas sales company as the goal, to meet the minimum consumption of natural gas in the provinces and does not exceed the maximum utilization capacity of the provinces, according to the state’s new natural gas price policy, the establishment of the sales company’s inter-provincial sales optimization Model, and the model is tested by taking a petro-western gas transmission line of PetroChina as an example. The results show that the linear programming method is a scientific and feasible method to solve the inter-provincial sales of natural gas sales companies. The optimized results of the model can provide effective decision support for natural gas sales companies and have strong practicability. In the future, this research method can be further extended to optimize the sales of natural gas among various regions and users within the provinces. In addition, the method can be applied to analyze inter-provincial optimized sales of other resources.