Seismic Attribute Optimized Technique Applied To Zhuang 106 Area Sedimentary Facies Research

The sand sedimentated at the upper Guantao group is a better reservoir, but the difficulty for exploration and development is that the sand rock distributes heterogeneously in space. How to find the river bed with better physical property is an important way to improve the benefit of exploration and development. The meander river is including mainly of four sedimentary micro-facies: river bed, bank, overflow and ox-bow lake. The rock is interactive of sand and shale with the characters of shale included sand. The seismic reflection characters of sedimentary micro-facies are: stronger energy and negative polarity of river bed, stronger energy, negative polarity and high frequency of bank, poor energy and uncertain polarity of overflow, strongest energy and negative polarity of ox-bow lake. The river bed and overflow can be identified quickly with techniques of level slice (horizontal level slice), 3D visualization displaying and frequency division scanning; the target described by sedimentary micro-facies is also determined by it. The multiple solutions can be resolved effectively with the seismic attribute optimized and combination. The result gotten by seismic method description is consistent better with the logging data, which proves an effective way of description meander river.Through Seismic attribute optimized technique research Zhuang 106 area sedimentary facies, optimize seismic attributes or attribute combination for geological character sensitivity. The method is optimize seismic attributes for reservoir research by using depress dimension mapping, classes , variogram analysis. Furthermore, we analyse drilling to confirm these seismic attributes. The multiple solutions can be resolved effectively with the result. The seismic attribute can be convert to porosity if seismic attribute has relationship with porosity according to Geo-statistics principle. The result of porosity using seismic attribute converted can be get more precision.