Facies Controlled Seismic Description Of Fluvial Unconsolidated Sand Reservoir And Hydrocarbon Identification

The Neogene reservoir of Guantao formation is the manly ol bearing series in Shengli Oilfield,Petroleum geology has proven reserves of 86% of total proven reserves,reservoir types are mainly lithologic reservoirs.Guantao reservoir is unconsolidated sand,showing strong viscosity.Based on the study of the spatial and temporal evolution of fluvial sedimentary system,specified that from the lower Guantao to the upper Guantao and Minghuazhen formation has gradually evolved from the sedimentary characteristics of the braided river,meandering river to net river,the type of evolution from the edge of the basin area to the catchment area of braided river,meandering river,braided river of continuous.In back of the viscous medium theory,based on the forward modeling method of wave equation,studied on the braided river,meandering river and braided river of different types of reservoir seismic response characteristics,specified the focus of their respective descriptions,developed reservoir description technology with high adaptability and strong adaptability,the fluid identification technology for different reservoir types is also explored.