DOMINANT FACTORS OF THE JURASSIC STRATIGRAPHIC RESERVOIR IN ZHONGGUAI UPLIFT OF JUNGGAR BASIN

Several Jurassic stratigraphic reservoirs have been found in Zhongguai uplift,Junggar basin,but their reservoirs have proved difficultly because of complex dominant factors.Dominant factors of stratigraphic reservoir are discussed by analysis of evolution of the uplift,sequence stratigraphy,Jurassic sedimentary system and drainage system.The pinch-out type of stratigraphic traps developed in Zhongguai uplift and lense-shaped stratigraphic traps developed in its slop.It's superiority of forming stratigraphic trap that the Jurassic sedimentary system derived from the North crossing obliquely the Southeast-dip slop.The faults are dominant factors to Jurassic reservoir- Permian source.The lenses-shaped reservoir developed down the slope point,deltaic front,and the sphenoid reservoir developed upper the slope point.It has favorable oil prospecting that the stratigraphic reservoir developed in the LST Badaowan formation and the HST Sangonghe formation.