天然气混源比例定量计算的多元数理分析方法

The multivariate data analysis method of quantitative calculation of mixed proportion of natural gas

通过选择端元样品、进行人工配比混源实验并建立图版,进而判识天然气混源比例的方法仍是目前最常使用混源气组成比例判识的方法。在实例展示的基础上,提出该方法存在的2点主要问题:一是在复杂地区端元样品无法获取;二是很多地区存在多个端元,造成人工配比的工作量过大。针对这2点主要问题,提出了一种多元数理分析方法用来定量计算天然气混源比例。通过实例解剖,证明该方法准确可靠。指出应用该方法,可以在不知道端元样品、不进行人工混源实验的情况下,直接计算混源气中端元的数量、组成和贡献比例,该方法在研究复杂地质条件下混源气比例时具有特别的作用。

Artificial gas mixing experiment is frequently adopted in quantifying mixed gases at present.The common process of this experiment is summarized via one case study,and two main problems of the experiment have been put forward.A new multivariate data analysis method is set up to quantitatively calculate the mixed proportion of natural gases.The method is proved in another case study.Through this method,the numbers,composition and proportion of end member samples could be calculated and confirmed even without knowing any information of the potential end member samples or adopting the artificial gas mixing experiment.This method is particularly useful to quantify mixed proportion under complicated geological conditions.