Research On The Sedimentary Microfacies Of Wangfu Sunken Chengshen 2 Well Area In The Bin County City

Based on the sedimentary microfacies of Wangfu sunken chengshen 2 well area in the bin county city as the research focus,in petroleum geology, reservoir sedimentology, sequence stratigraphy and seismic stratigraphy theory basis,making full use of core data, logging data, seismic data, the development stage of all kinds of static and dynamic data,establishing a bin county of wangfu sag in the study area springs a high-precision stratigraphic framework,and unified, whole, fine contrast,the study area is eventually divided into five sand group, 17 small layers.On this basis,through the study of sedimentary background, mudstone color, lithology, granularity characteristics, sedimentary structure, logging facies marks and phase analysis,establishing typical logging facies model, identify sedimentary microfacies types;combing with sandstone thickness, sand ratio, seismic attributes and reservoir inversion prediction to depict micro-facies profile and surface.The results show that bin county of wangfu sag springs for a period of 2 types of sedimentary facies, sedimentary period five and nine kinds of microfacies, braided river and meandering river phase respectively; braided river channel subfacies 、shore sedimentary subfacies、river subfacies、embankment subfacies and river flood subfacies;braided river channel subfacies can be divided into the riverbed detainment microfacies and beach sedimentary microfacies, embankment subfacies can be divided into natural levee sedimentary microfacies and crevasse splay microfacies,river flood subfacies can be divided into flood land sedimentary microfacies and river flood lake microfacies.In the end,predicting advantageous area,it has important guiding significance to the exploration and development.