天然气管道改扩建项目经济评价问题初探

Economic Evaluation of Natural Gas Pipeline Upgrade Projects

在改扩建项目经济评价中,对于评价方法的适用性、评价范围的界定和计算期的确定,存在着不同的学术观点。天然气管道改扩建项目分为输能约束类和技术约束类,其技术经济特性包括以增量盘活存量、改扩建与生产同步进行带来的复杂性、项目效益的多样化等。在选择天然气管道改扩建项目的经济评价方法时,不能仅仅考虑增量指标的结果,必须根据总量指标作进一步分析。在评价的范围、计算期的界定、评价参数的选取和经济评价的原则等方面,应充分考虑管道改扩建项目的具体情况和特殊性。

Academic views differ on the applicability of alternative methods, the scope, and how to determine the calculation period for economically evaluating natural gas pipeline upgrade projects. Intended to remove constraints caused by limited traffic-capacity or older technology, the upgrade projects seek to activate inventory by increments and to get various benifit amidst the complexity of doing pipeline upgrade together with producing. Not only incremental indicators but also total- quantity indicators need to be considered when selecting the method for economic evaluation. The particular circumstances of the project need to be fully considered when determining the scope of evaluation, the calculation period, the calculation parameters and the principles for economic evaluation.