Provenance Analysis on the Fuyu Reservoir in Xinmiaoxi-Xinbei Regions of the Northern Fuxin Uplift,Songliao Basin

Provenance direction research is an important part of the sedimentary facies research. The provenance direction is able to represent the direction of ancient water flow in the geological historical period. Furthermore,it is able to control the distribution range and the extensive trend of the sand body as well. Consequently,the analysis and research on the provenance direction plays an important role in the comprehensive analysis involving the sedimentary facies distribution,reservoir evaluation,as well as oil and gas accumulations. Combining the analysis on basin regional geological background,heavy mineral assemblages,sandstone ratio,and the characteristics of palaeogeomorphology,the provenance analysis on Fuyu reservoir is comprehensively conducted in Xinmiaoxi-xinbei regions,Songliao Basin. The results show that Fuyu reservoir in Xinmiaoxi-Xinbei regions is greatly controlled by two provenances,that are the southwest Baokang provenance of mainly zircon and the south Huaide provenance of mainly garnet and following zircon. The forming and distribution of sand bodies in Quan4 Formation of XinmiaoxiXinbei area were jointly controlled by the two provenances all above. Consequently,hybrid sedimentation were formed under the control of multi-provenance,differences existed between each other provenance,and the characteristics of every provenance were inherited between each phase in Xinmiaoxi-Xinbei area.