In order to analyze the favorable conditions of hydrocarbon accumulation and identify favorable plays of Maigaiti slop in Tarim basin

we used the tectonic analytical method of superimposed basins to study the cha- racteristics and genesis of the eastern and western segments of the slope and discussed their hydrocarbon exploration significances based on integration of seismic and well data and analysis of the dynamic evolution of Maigaiti Slope.Multi-stage evolution and differential evolution are the key factors causing the obvious differences between the eastern and western segment in respects of hydrocarbon

migration and accumulation conditions and main exploration targets.The western segment in the Late Hercynian tectonic belts has good preservation conditions

and the up-dip upper Paleozoic lithologic body near the faults are key factor controlling hydrocarbon accumulation and enrichment.The eastern segment is located in the Hetian paleo-uplift

where Yubei-1 wellblock is placed in an area with the Middle and Late Caledonian tectonic stress superimposing with the Late Hercynian tectonic stress

providing more favorable conditions for the Ordovician fractured-vuggy reservoir development.The Lower Ordovician exposure in the buried hill zone to the east of Yubei-1 wellblock is covered by a seal of certain thickness which is favorable for the effective preservation of solution pores

vugs and fractures

thus is also a potential exploration target.