Seismic Multi-attribute Parameters Extraction Research And Application

Southeastern Sichuan Basin has good geological conditions into oil,Through the exploration of oil and gas accumulation in Guandu area,Reservoir is relatively developed in the region,development of continental facies,marine facies several sets of reservoir,terrestrial facies are mainly clastic rock reservoir in Lower Shaximiao Formation and Xujiahe Formation,marine facies are mainly Pore fracture type reservoir in Leikoupo Formation and Jialingjiang Formation,and Maokou Formation of karst seam hole type reservoir.In order to accelerate the pace of Guandu structure with oil and gas exploration,expanding the rolling development of continental clastic rock in the region,and strive to achieve exploration breakthrough in the field of marine carbonate rock,so in the region to carry out the analysis and prediction of reservoir is very important.Guandu district of drilling is more,the quality of seismic data is higher, so it can be in the area of the reservoir prediction in-depth work.But because of the complexity of reservoir and prediction technology is not mature,has yet to create a more unified and effective reservoir prediction and identification methods.Based on the above reasons,this area of the reservoir prediction using a variety of seismic attribute parameter extraction techniques.The seismic attribute analysis technology is one of the most effective methods of reservoir prediction,has very important significance for improving the success rate of drilling and oil and gas exploration and development.This paper first introduces the structure,exploration,drilling conditions and the main research purpose layer lithologic characteristics of the Guandu district, then, with 4 wells in the Guandu tectonic division of sedimentary microfacies on the basis of the analysis of the relationship between all kinds of sedimentary facies and formation velocity,wave impedance parameter;main characteristic parameters calculated at the same time,the main characteristic parameters extraction can extract seismic wavelet advocate extreme value,can better reflect the differences in lithology and physical properties caused by the geological body.With the well profile as the backbone,single well corresponding to the seismic facies as the model, analysis of regional seismic facies and local seismic facies,then in combination with regional geological and sedimentary facies analysis for seismic facies in geological interpretation.On the basis of accurate horizon calibration,application of multiple seismic attributes extraction method for objective layer for application effect analysis.The main attribute analysis methods used including seismic instantaneous attributes calculation,quality factor extraction,differential technique in crack detection and wavelet-related sedimentary facies prediction.Application of these attributes method principle to extract attribute parameters of seismic wave,through property parameters calibration of 2D profile and 3D layer along planar sections display,analysis and describes the distribution characteristics of sand body of Xujiahe Formation,Jialingjiang Formation and Maokou Formation in Guandu in the Southeast Margin of Sichuan,and the favorable reservoir blocks are forecasted and evaluated in the four section of Xujiahe Formation,first section of Jialingjiang Formation and middle section of Maokou Formation.