STUDY OF GAS SOURCE AND CHARACTERISTICS OF CARBONIFEROUS HYDROCARBON SOURCE ROCK IN THE JUNGGAR BASIN

Based on the integrated study of Carboniferous Dishuiquan Formation source rock in the Junggar Basin,it is suggested that the organic matter abundance ratio is high,the kerogen type belongs to Ⅱ₂-Ⅲ and it is at the mature or high mature stage.Therefore,it is good gas source rock and has large gas resource potential.The gas geochemistry features indicate that the Carboniferous gas in Cainan and Ludong-Wucaiwan is different from others in the Junggar Basin,and the methane and ethane carbon isotope of it are heavier(δ¹³C₁-33‰,δ¹³C₂-28‰),indicating that the gas sources from sapropelic kerogen and comes from Carboniferous sourse rock.In brief,the oil and gas resources of Carboniferous is plentiful,and the exploration foreground is very vast,and Ludong-Wucaiwan,Mosuowan are the main area of Carboniferous exploration in the future.