HIGH TEMPERATURE GAS CHROMATOGRAM OF HIGH MOLECULAR WEIGHT HYDROCARBONS FROM CRUDE OIL AND ROCK EXTRACTS

By using high temperature GC analysis of high wax oil and rock extracts in Damintun Depression,the distribution and composition of high molecular weight hydrocarbons (HMWH_s) were determined.Except for high molecular weight n-alkane,complete isoparaffin or cycloparaffinic hydrocarbons were observed in hydrocarbon of C₄₀ above.Their abundance and distribution are controlled by thermal evolution of source rocks.It proved direct evidence of origin of high wax oil as a result of detection of HMWH_s.