Rapid identification and assay of crude oils based on moving-window correlation coefficient and near infrared spectral library

Based on near infrared spectroscopy, a method for rapid identification of crude oil type, named moving window correlation coefficient method, was proposed. This new spectral searching method can distinguish highly similar crude oil spectra. The main parameters of the moving window correlation coefficient method were discussed and selected in this study. Combined with crude oil assay database, detailed crude oil assay of unknown crude oils can be rapidly provided by this method. With the expansion of the NIR spectral library and assay database, this strategy would play more and more important role in making business decisions, and in planning, controlling and optimizing operations of refineries.