| 1. | Saturated hydrocarbon fractions of free oil , sealing oil and bound oil , which are extracted from six oil sands of yanchang formation in xifeng oilfield of northwestern ordos basin , northwest china , have been analyzed by gc / msd ( 6890n / 5973n ) in order 摘要对鄂尔多斯盆地西峰油田三叠系延长组六个油砂样品中游离烃、封闭烃、束缚烃的饱和烃馏分进行了gc - ms分析。 |