Abstract:

Most compounds among normal paraffin of oil can be separated by total hydrocarbon chromatography analysis as to distinguish the subtle differences in the crude. The middle molecule hydrocarbon in the crude and source rock with sameor different formation of cause is analyzed and correlated. Thefingerprint of the different genetic oil and source rock in different area are
studied in thepaper , the result shows that fingerprint difference of the different genetic oil is very obvious, while same genetic oil fingerprint is similar. Some low carbon compounds susceptible to biodegradation are also studied in the paper. Taking Gangdong oil field as example , the authors makeoil/ source correlation using middle molecule hydrocarbon.

Key words: total hydrocarbon chromatography, middle molecule hydrocarbon, biodegradation, oil/ source correlation.