Study of individual hydrocarbon's composition of gasoline fraction of Tamsagbulag oil, Mongolia

In order to conduct complex research in oil that originated in Mongolia for further application of petroleum not only as fuel but also as raw material for organic synthesis, we need to study the physical and chemical characteristics, individual and group hydrocarbon's composition of main petroleum fractions. A number of studies and surveys on the physical and chemical characteristics, group hydrocarbon's composition of petroleum deposits in Zuun-Bayan, Sukhaibulag, Tsagaan Elst, Tamsagbulag have been carried out earlier through n-g-M, aniline point, dispersimetric methods successfully. Yet a detailed chromatographical and NMR spectroscopic study for individual hydrocarbon's composition of Tamsagbulag oil main fractions has not been conducted. In the present study, the results of GC analyses of gasoline fractions of wells 19-3, 19-13 and 19-10, Tamsagbulag, Eastern Mongolia were presented. The gasoline fractions of given wells are characterized by high concentration of paraffins and presence of trace amount of olefins. A total of 69 paraffins, 45 naphthenes, 41 aromatics and 3 olefins were identified, totalling 158 individual hydrocarbons from each samples of gasoline fraction. The first attempts to classify Tamsagbulag oil under individual hydrocarbon composition data were successfully conducted and the hypothesis (supposition) of a genetic classification of given oil as “sapropelic” type was made.