Abstract: For the southern edge of Junggar Basin, because of the lack of systematic study of the Tertiary sedimentary reservoir, the favorable reservoir and size distribution is not so clearly. Therefore, the well logging data and core data are used for standardization and core location, and analyzing the correlation between core porosity and various logging response and between core porosity and permeability. Through regression analysis, the porosity and permeability model of log interpretation is set up. At last, the testing for oil shows that the lower limit of physical property of effective reservoir is that the porosity is higher than 8% and the permeability is higher than 1mD. Combined with sedimentary facies, lithology and other factors, it is pointed out that the Tertiary effective reservoirs developed well vertically in the southern edge of Junggar Basin are the second and first members of Shawan Formation and the third member of Ziniquanzi Formation. Horizontally, the effective reservoirs are mainly distributed in Chepaizi-Kayindike area, West Lake-Dushanzi- Anjihai anticline zone, and Huoerguosi-Manas-Tugulu-Hutubi anticline zone, providing important reference for next-step exploration deployment.

Key words: Junggar Basin, favorable reservoir, well logging interpretation, Tertiary