Abstract: The lithology，electrical property，physical property and oiliness of Baikouquan Formation in Triassic，Mabei
Oilfield，Junggar Basin were analyzed by using data of drill core，well logging，oil testing and analysis test. Their relationship
and affecting factors are summed up，and the interpretation models of porosity，permeability，and oil saturation were established.
The research indicates that rock pattern，grain size，sorting，shaliness and cements type are key factors of controlling physical
property of oil reservoir. Most of lithology have good oil-bearing occurrence，especially conglomerate，glutenite and gravelbearing
sandstone. The grade of oil display is gradually increased with physical property. There is also a positive correlation
between oil saturation，formation resistivity and physical property. Through the research of four property，as well as the cross
plot of oil testing，physical and electrical parameters，the quantitative interpretation standard of oil reservoir for Baikouquan
formation was established to divide oil layer，acquifer and dry layer. Therefore，it provides the scientific evidence for future
petroleum development and exploration.

Key words: Junggar Basin, Baikouquan Formation, reservoir characteristic, physical property, oiliness, interpretation standard