Abstract:

The normal variation gradient and the tendency of getting lighter upward of the fluorescence spectrum intensity and the specific value in hydrocarbon well have revealed the existance of hydrocarbon vertical micro migration. Fluorescent ternary diagram and synchronous fluorescence spectrum can properly indicate the direction of the micro migration:from deep strata to surface,R 320 increases,λ 360 nm decreases and every wave band possesses positive gradient with the exception of λ 430 nm

Key words: 3-D fluorescence, synchronous fluorescence, micro migration, migrational direction