Geological and biological factors of oil composition formation

Geological and Biological Factors of Oil Composition Formation The depositional environment of oil source rocks, its thermal evolution, and secondary alteration processes are the most important factors determining the composition of crude oil. [Pg.65]

Their bulk properties as well as their chemical composition can characterize crude oils. Distillation of crude oil provides fraction profiles over a certain boiling range. Crude oil as well as its distillation fractions can be described in terms of density, viscosity, refractive index, sulfur content, and other bulk parameters. [Pg.66]

Chemically, crude oil can be divided into fractions of different polarities using column or thin-layer liquid chromatography. [Pg.66]

This compound class subdivision provides an optimal spread of the data over the diagram, thus allowing a classification of oil into six groups. [Pg.66]

Any composition of crude oil depends on the combination of various factors. Among the environmental factors, those that influence the nature of the organic matter in the source rock and its mineral composition are of primary significance. [Pg.66]

Big Chemical Encyclopedia