The composition and distribution of hydrocarbons and hetero-organic compounds of oil components of the crude oil sampled from the Usinskoye oil field and those of samples of compounds occluded by macromolecules of its asphaltenes are studied. It is found out that both samples contain normal and branched alkanes, alkylcyclopentanes and alkylcyclohexanes, steranes and terpanes, tetraalkylbenzenes, naphthalenes, phenanthrenes, phenyl and naphthene derivatives of aromatic hydrocarbons, benzo-, dibenzo- and naphthobenzothiophenes, fluorenones, dibenzofurans and carbazoles. The peculiarity of occluded compounds is the presence of mono-, bi- and trialkylbenzenes, phytanylbenzenes, indanes and tetralins, pyrenes and fluoranthenes, benzocarbazoles and aliphatic ethyl ethers in their composition. Similarities and differences in the distribution of similar structures are revealed.

Topics
Crude oil, Asphaltene, Macromolecules
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