Study on deposition characteristics in Jurassic at Kayindike area of Junggar basin

The Jurassic System at Kayindike area is one of important exploration targets in Junggar Basin.Based on the analysis on facies of individual well,the distributions of regional sedimentary facies in Jurassic were studied in detail.Study shows that the source mainly comes from Chepaizi uplift with scarce edge facies but the ample delta and lake sedimentary systems.Consequently,the evolutional process of sedimentary system was analyzed.Study on sequence thicknesses suggests that the transferring of subsidence centers in Sikeshu depression is determined.Finally,the sand body range is predicted and the favorable reservoir is presented.