Sequence stratigraphy of the Triassic in Akekule area,Tarim Basin and its control effect on the reservoir sandbody

The Triassic in Akekule area is divided into 7 third-order sequences based on the analyses of core data and logging record and the correlation of stratigraphic sequences.And these sequences reflect 7 fluctuation cycles of sea level.At the same time,the depositional evolution and the sequence stratigraphy framework of the area are analyzed and summarized.Based on these,the types and the physical property of the reservoir sandbody are analyzed,and it is held that this type of reservoir sand body has good reservoir forming conditions.