The tight reservoir in the eastern Sulige is influenced by multi-period sedimentary, diagenesis and structure. And, it has small space, strong anisotropism, complex pore structure and complicated log response. The paper analyzes the remaining gas in invaded zone and offers the contrast between the limit and assessment of gas-bearing formations, influenced by saturation of residual and remaining movable gas. The research presents lower differences of residual gas saturation and greater differences of remaining movable gas saturation in tight reservoir of classified petrophysical phase. So, the assessment of gas formations in classified petrophysical phase can be established based on lithology, physical property, logging curves and hydrocarbons response to remaining movable gas in different types of gassy formations. The re-evaluation in tight reservoir is made among 46 wells in the study region. It is recommended to add gas formation, bad gas formation and gas reservoir section to test, which is beneficial to tight reservoir to reach a high output.