CHARACTERISTIC OF HYDROCARBON SYSTEM AND EXPLORATION PROSPECT OF YINGEN-EJINA BANNER BASIN

Yingen Ejina Banner Basin is a new area of continental hydrocarbon exploration with a large area and low exploration degree.The newest exploration shows that this basin is a Mesozoic pull apart basin group which appears in the process of the inner plate evolution after the collision of four plates from Hercynian.This basin group consists of single northeast or northeast east halfgraben like depressions which are separated each other and developed in Jurassic and Lower Cretaceous and relatively developed two sets of hydrocarbon systems.Based on the regional geologic background,this paper introduces the basic geologic elements characteristic and geologic action process of Jurassic(?) hydrocarbon system and Lower Cretaceous(?) hydrocarbon system,analyses the hydrocarbon potential of them and proposes the exploration direction of the basin.