Abstract: An integrated study on lithology, sedimentology and petroleum geology of Pre-Salt Sediments in the Pre-Caspian Basin are carried out in this paper. The key point of oil and gas reservoir formation and distribution in the Pre-Salt Sediments is recognized. By analysis of characters and distribution patterns of
the found hydrocarbon pools, it is suggested that the Pre-Salt Sediments in Kraton-Tengiz Uplift and North Caspian-Azigiar Uplift are the favorable areas for petroleum exploration, fol-lowed by Yenbek-Zharkames and Zhanazhol areas (eastern part of the basin), and the southwestern and western slopes of the Astrakhan-Oktyabrsk Uplift zone (the western and southwest-ern parts of the basin), as well as Uzensk area (the northwest-ern basin) are of certain potential for petroleum exploration as well.

Key words: Pre-Caspian Basin, Pre-Salt Sediments, petroleum geology, favorable area for petroleum exploration