Characteristics of pore character and its controls of Chang 6 reservoir of Zhiluo Oilfield

Through researching the pore features and influencing factor of the reservoir,clearing the controlling factors of reservoir.Based on the sedimentary facies research,using the thin sections,scanning electron microscope observations and physical property,the pore and diagenesis features are analyzed.The main pore types are secondary pores of feldspar,debris and carbonate cements in the Chang 6 of the Zhiluo Oilfield.The micro larynx is the main seepage passage.The diagenesis include compaction,pressure solution,cementation,and dissolution.Reservoir is controlled by the sedimentary facies zone.The compaction,pressure solution and cementation lead few pore and reservoir's poor physical property,dissolution improves pore features to a certain extent,because it is not largely.Finally,it leads the characteristics of low porosity and low permeability in Chang 6 reservoir.