关键词: 石油化学成分, 大地构造旋回, 地层时代

Abstract: Based on mass data analyses, the changes of sulfur, paraffin, colloid and asphaltene contents of crude oil in profile are studied.The results indicate that these parameters in profile change closely with geotectonic cycles as follows: sulfur, colloid and asphaltene contents keep the lowest values in Devonian, Triassic, Jurassic and Tertiary; they are in accordance with regressive geotectonic phases, of which the maximum values appear to be correspond to the largest-scale marine transgress ions occurred in Caledonian cycle, Hercynian cycle and middle phase of Alpine cycle.

Key words: petrochemical composition, geotectonic cycle, stratigraphic time