The Forming Condition And Resource Potential Analysis Of Tight Oil And Gas In Jixi Basin

To clarify the geological conditions of formation of tight oil and gas in Jixi Basin,explore resource potential and address energy demand, this paper, which is based on the dissection and evaluation of typically domestic and international oil and gas reservoir and establishing evaluation criterion and of oil and gas in Jixi Basin Muling group and Chengzihe group, analyzes the material basis of formation of tight oil and gas from several aspects of type of hydrocarbon source rock, evolution stage and distribution horizon. I also studied petrological characteristic of sandstone reservoir in the objective horizon by utilizing the theory and techniques of petroleum geology and reservoir sedimentology. By utilizing statistical analysis to describe tight reservoir properties, I demonstrate the dense reason from some aspects of tectonic movement, sedimentation and diagenetic condition. Synthetically,considering source reservoir matching relation and tectonic movement stability of tight oil and gas preservation conditions and in accordance with the hydrocarbon-generating,migration, preservation and matching principle in four areas, I devide the study area into favorable regions, which are rich of tight oil and gas. I eventually use simulation of hydrocarbon generation, analogy and volume method to calculate the endowment in the study area. Compared with the the reliability of calculation results of different methods, I apply the weighted average method to present the endowment of tight oil and gas in the study area,which provides guidance and reference for the exploration and development of tight oil and gas in the study area.