Abstract: The hypothesis of“Stack effect” is fundamental basis for directly finding out reservoir by means of techniques of non-seismic geophysical prospecting and geochemical prospecting. The study, of direct information such as surface soil, multiwell cutings of diferent depth, light hydrocarbons constituent, fingerprint fluorescence spectrum, methane carbon isotope, lithic acidolysis hydrocarbon and vertical light hydrocarbon distribution that indicate existence of deep oil reservoir, of indirect information as magnetic capacity,magnetic hysteresis loop,magnetic component of drilling cuttings and altered mineral/ mineralization that reveal vertical micro-migration of hydrocarbons, show that in northern Tarim area, its hydrocarbon constituent existed in oil reservoirs buried beneath 5000 m could still move up to the surface vertically,under effct of which,various geophysical and geochemical anomalies that can be detected over the oil reservoirs and subsurface.

Key words: Tarim basin, north, hydrocarbon, vertical migration, oil and gas reservoir, stack effect