Research on Es4 upper member reservoir characteristics and controlling factors analysis in Qingdong 5 block

In order to confirm the reservoir characteristics of Es4 upper member in Qingdong 5 block,by using coring data,well log and log data,the research on reservoir lithology and physical properties has been carried out.Based on the research,a deeper research on controlling factors of reservoir physical properties has been done.The results believe that the area belongs to fan delta sendimentary system,with the characteristics of big variances of inter-well reservoirs and strong anisotropy.The regional sedimentary characteristics and reservoir physical properties have been influenced by the structural movements of contemporaneous faults,and compaction is mainly the reservoir diagenesis.Due to shallow buried depth,the cementation and dissolution are not well developed.