Different Segmentations and Zones during Tertiary in the Southern Margin of Junggar Basin: Correlation of reservoir property and controlling factors

Key words: 
• southern margin of Junggar Basin

Abstract: A peculiar characteristic, different segmentations and zones, belongs to foreland basin. In southern margin of Junggar Basin, through a lot of cores of 13 wells describing, reservoir studing and some results of vitrinite reflectance analyzing, there are 3 different factors of reservoir at segmentations and zones in Tertiary. They are different porosity, permeability, compositional maturity and textural maturity. In different segmentations and zones as a research unit in thrust belt, the controlling factors of the different reservoir include ①different sedimentary feeders and sedimentary facies and different sandstone body that belonging at the same sedimentary facies. ②Different Lapidofacies, clay and cement that located at intergrain and dissolution in reservoir.③The main controlling reservoir is buried thermal effect and not the tectonic compression in Palaeogene. And ④because of the Tianshan Mountain’s uplifting in Neogene the tectonic compression changes the main controlling factor of reservoir in southern margin of Junggar Foreland Basin.