PETROLEUM GEOLOGIC CONDITION AND EXPLORATION TARGETS IN THE SOUTHEAST OF JUNGGAR BASIN

Three basin prototypes are generated in the southeast of Junggar Basin: filling basin in the post-rift sequence(P₂-T_2-3),foredeep basin in the post-rift sequence(T₃³-J_1-2) and intracontinental foreland basin(J₃-E).There are three sets of major hydrocarbon source rocks: the Lucaogou and Hongyanchi Formations of the Upper Permian,the Huangshanjie and Haojiagou Formations of the(Upper) Triassic and the Badaowan,Sangonghe and Xishanyao Formations of the Lower and Middle Jurassic,located in the Fukang,Jimusaer,Wucaiwan and Huangcaohu Sags,forming multiple petroleum supply centers.The research region is good for petroleum preservation.Oil and gas can be explored in different blocks.The Bogda nappe structure and the two fault blocks(approximately SN and EW) are closely related to hydrocarbon generation, migration and accumulation.Hence this region is worth exploring further.