The Research On Sedimentary Microfacies And Reservoir Characteristics Of The Shahejie Formaition At Wang 102 Fault Block In The Jiyang Depression

The Wang102 fault block is a secondary fault block at the Wang Gugang oil field in the Dongying depression, it has complex structure, low ordinal faults development, various types of sedimentary formation, the longitudinal development of reservoir and oil-bearing series, the reservoir plane heterogeneity is strong, lead to development in the upper, the serious interlayer interference, large difference of each small layer use condition, the remaining oil enrichment regularity understanding main geological problems such as difficult, restricted the reserves producing degree.Paper, guided by the theory of modern sedimentology, make full use of drilling data, seismic data and field performance data, reservoir for auspicious thin layer classification and correlation, then the reservoir sedimentary facies and sedimentary microfacies, the spatial distribution law of sand body, reservoir characteristics and heterogeneity of in-depth study.Nine was determined by the research, a sign of stratigraphic correlation layer or standard, has carried on the back to stratigraphic division.Sedimentary facies study shows that the study area of upper second section mainly the delta plain sedimentary, sand two section of the lower part of the development of the delta front mainly deposition, by far bar- sand sheet- mouth bar- many rhythm of underwater distributary channel deposits;Plane, delta plain river micro compared with development, and delta front subfacies mainly develops distributary mouth bar microfacies, provenance come from the northeast in the study area.Work area sand body is favorable, in a strip or sheet, for the hole in the high permeability reservoir, the reservoir with strong interlayer heterogeneity and permeability heterogeneity in layer, belongs to the heterogeneous reservoir.