本文介绍了由一个主要的油气计量系统供应商提供的“传统”不确定度分析方法的原理和结果。还介绍了与典型的油计量站相关的量，如温度、压力。密度和毛体积量，以及依据北海—油田研制的分配计量装置的仪表参数和实际数据得出的结果。之后。用ISO“测量不确定度表达指南”步骤作为一个“新的”方法，以相同仪表的不确定度和在原油外输计量站工艺条件下的相同数据计算不确定度。最后对两种方法的结果做比较。 This article describes the principles and results of a “traditional” method of uncertainty analysis provided by a major supplier of oil and gas metering systems. Also describes the amount associated with a typical oil metering station, such as temperature and pressure. Density and gross volume, as well as the results based on instrumentation parameters and actual data of distributed metering devices developed by the North Sea-Oilfield. after that. Using the ISO Guide on Measuring Uncertainty Expression as a “new” method, the uncertainty is calculated using the same instrument uncertainty and the same data at the crude oil outbound metering station process conditions. Finally, the results of the two methods are compared.