Abstract: Water rock interaction is an important process of the diagenesis, and its products are the proofs of reservoir diagenesis. They can study not only reservoir diagenesis, but also analyze flowed fluid history, components and nature. Based on the results of the electron-probing analysis on the carbonate minerals from the products of water rock interaction in Shixi oilfield, Shinan oilfield, Mobei oilfield and Hong-Che fault belt in Junggar basin, this paper discussed the relationship between carbonate minerals from diagenesis and oil-bearing flowed fluids.

Key words: Junggar basin, water, rock, interaction product, diagenesis, electron-probe