ORGANISM RELICS OR KEROGENS IN OILS AS OIL-SOURCE ROCK CORRELATION INDICATOR

Organism relies or kerogens in oils are first observed by a confocal l aser scanning microscope (CLSM) and a transmission electron microscope (TEM). The complexes of kerogens in oils are characterized by the pre sence of a great variety of microfossils or macerals. These kerogens i n oils are mainly the residues of the original organic substances from which oil formed, and minor kerogens from enclosing rocks enter the o ils, therefore, the components and types of the kerogens in crude oils can serve as an indirect indicator of oil-source rock correlation. Th is method was applied to Jurassic oils in the Junggar Basin and the Tu rpan-Hami Basin, and there are two types of the kerogens in oils: one containing a lot of macerals from terrestrial plants may derive from c oals, and the other, characterized by a high content of microscopic al gae, fungus spores and Acritarch, may originate from Permian organic m atter. In addition, the reflectance of the vitrodetrinites in oils can be used as an indicator of oil-source rock correlation.