Abstract:

Tarim Basin is a Mesozoic—Cenozoic superimposed oil—bearing basin developed from the Paleozoic platform. As it has long been in relatively stable tectonic setting，it provides the favorable geologic conditions for oil—gas generation，accumulation and preservation. A lot of oil and gas seepages and the prolific oil—gas wells indicate that Tarim Basin is rich in oil—gas resources. Among the mufti—oil—generating beds，the Cambrian and Ordovician is the best one. According to the Cabrian and Ordovician petroleum geologic features，the author analyzes the oil—bearing potential in the basin.

Key words: Tarim Basin, Cambrian system, Ordovician system, Source rock, Source—Reservoir— cap assemblage, Trap