The family composition of Daqing heavy oil and the latent content of lubricating oil with mass spectrography and solvent dewaxing methond were analyzed, and then compared with document data.

• 采用质谱法、溶剂脱蜡法对大庆原油重质馏分油的族组成和润滑油潜含量进行了分析并与文献数据对照，对大庆原油重质馏分油的组成变化情况进行了讨论。