反射系数反演方法研究及其在薄层识别中的应用
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摘要
随着地震勘探开发的不断深入,要求地震方法对地层结构的研究能力越来越强。利用地震资料来识别薄层地层较难,主要原因是目前地震垂向分辨率较低。本文采用反射系数反演方法,这种方法是一种叠后地震反演方法,可以识别小于调谐厚度的地层,这种薄层反演方法的输出成果是反射系数剖面和反射系数体,其分辨率远高于原始地震数据,因此这种反演方法非常适用于薄层的储层解释和描述工作。通过对实际地震资料应用,该方法很大程度上提高地震解释的精度,并且较准确识别微构造等。
With the exploration and development of seismic is deep continuously,requirement of the ability of study about stratum structure using the seismic is growing. Currently,there are some difficulty,for vertical resolution,identification thin-bed. The reflectivity inversion is a way of post- stack seismic inversion,it can discern the stratum,which is more thin than tuning thickness. The output of this inversion is the section and body of reflectivity,its resolution is higher than original seismic. So reflectivity inversion is suit to interpretation and description of the thin-bed. This technology obtaineda good effect on distinguish the micro- structure and improve the accuracy of seismic interpretation.
With the exploration and development of seismic is deep continuously,requirement of the ability of study about stratum structure using the seismic is growing. Currently,there are some difficulty,for vertical resolution,identification thin-bed. The reflectivity inversion is a way of post- stack seismic inversion,it can discern the stratum,which is more thin than tuning thickness. The output of this inversion is the section and body of reflectivity,its resolution is higher than original seismic. So reflectivity inversion is suit to interpretation and description of the thin-bed. This technology obtaineda good effect on distinguish the micro- structure and improve the accuracy of seismic interpretation.
引文
[1]Castagna J P,Sun S,Siegfried R W.Instantaneous spectral analysis:Detection of low-frequency shadows associated with hydrocarbons[J].The Leading Edge,2003,22(2):120-127.
[2]Chung H,Lawton D C.Frequency characteristics of seismic reflections from thin beds[J].Canadian Journal of Exploration Geophysics,1995,31(1-2):32-37.
[3]Chopra S,Castagna J,Portniaguine O.Seismic resolution and thin-bed reflectivity inversion[J].CSEG Recorder,2006,31(1):19-25.
[4]Chopra S,Castagna J,Portniaguine O.Thin-bed reflectivity inversion[C]//75th Annual International Meeting SEG,Expanded Abstract,2006:2057-2061.
[5]Cancel Tirado S M,Evans R B,Yoon K J.Monoclonal antibody analysis of porcine reproductive and respiratory syndrome virus epitopes associated with antibodydependent enhancement and neutralization of virus infection[J].Veterinary Immunology and Immunopathology,2004,102(3):249-262.
[6]Widess M B.How thin is a thin bed[J].Geophysics,1973,38:1176-1180.
[7]Gauthier B D M,Lake S D.Probabilistic modeling of faults below the limit of seismic resolution in Pelican Field,North Sea,offshore United Kingdom[J].AAPG Bulletin,1993,77(5):761-777.
[2]Chung H,Lawton D C.Frequency characteristics of seismic reflections from thin beds[J].Canadian Journal of Exploration Geophysics,1995,31(1-2):32-37.
[3]Chopra S,Castagna J,Portniaguine O.Seismic resolution and thin-bed reflectivity inversion[J].CSEG Recorder,2006,31(1):19-25.
[4]Chopra S,Castagna J,Portniaguine O.Thin-bed reflectivity inversion[C]//75th Annual International Meeting SEG,Expanded Abstract,2006:2057-2061.
[5]Cancel Tirado S M,Evans R B,Yoon K J.Monoclonal antibody analysis of porcine reproductive and respiratory syndrome virus epitopes associated with antibodydependent enhancement and neutralization of virus infection[J].Veterinary Immunology and Immunopathology,2004,102(3):249-262.
[6]Widess M B.How thin is a thin bed[J].Geophysics,1973,38:1176-1180.
[7]Gauthier B D M,Lake S D.Probabilistic modeling of faults below the limit of seismic resolution in Pelican Field,North Sea,offshore United Kingdom[J].AAPG Bulletin,1993,77(5):761-777.
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