Abstract: On the basis of thermal evolution history of source rock, stuctural evolution history and diagenesis history of reservoir rock, this paper analysed formation and evolution of Carboniferous reservoir in Bashitop anticline, and established a“lower fault and upper fold" reservoir forming model. Mutiple movements of faulting in early stage are very important to formation of Carboniferous reservoir in Bashitop anticline, not only improving accumulation condition of reservoir, accelerating formation of trap, but linking up source rock and reservoir rock , playing a conductive role in oil/gas migration.

Key words: Tarim basin, Bashitop, Carboniferous, Reservoir formation, Condition, Structural model