Abstract: Luobupo sag is located on east of Y ingjisu sag. Both of sags are situated in eastern Tarim basin. Great success of petroleum exploration had been achieved in Yingjisu sag in 2002. Based on the analyses of basinal type, tectonic evolution, trap development, source rock evaluation, reservoir and seal-reservoir assemblages,we believe that Luobupo sag has the same geologic evolution history and basic petroleum geologic condition as Y ingjisu sag. It is also of good prospect for making breakthrough of petroleum exploration.

Key words: Tarim basin, Luobupo sag, tectonic evolution, geologic characteristics, oil and gad exploration