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《Progress in Geophysics》 2012-06
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Sandstone high prediction of alternating beds with spectral peak number on spectral analyses

SONG Wei-qi,CHEN Chen,LIU Cheng,HE Ke (Institute of Earth Sciences and Technology,China University of Petroleum,Qingdao 266555,China)  
hrough the pitfall frequency analysis and on the basis of discussing the seismic spectrum of monolayer thickness,the problem that using the multilayered stratigraphic seismic sopectrum method to predict the thickness,concludes sandstone thickness,lithology and the variation of extreme of the sesimic spectrum after researching multilayer model spectral characteristics,and based on this method,it forecasts sandstone thickness by peak numbers.In the method,first established the quantitative calculation equation of sandstone thickness,lithology and the different extreme of seismic amplitude spectrum,threshold value and the corresponding peak number of spectrum.Through the equation,the threshold value,the selection of windows and the ploblem of variable window spectrum calculation has been resolved,and results in the formation of sandstone thickness calculated formulation.By the calculation of validating the thickness and the thickness of the analysis,the average relative error and average absolute errors are respectively 0.12 and 2.42,which proves that this method results in a relatively good effect.
【Fund】: 中石化胜利油田分公司;; 中国石油大学物探实验室的大力支持
【CateGory Index】: P631.4
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