频率-波数域递推计算海底多分量地震记录中的反射系数
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摘要
在频率 波数域中采用解析法 ,解出多层条件下海底实测的多分量地震数据分解成上行和下行P波和S波的算法 ,导出海底各层地震反射系数随入射角变化 (简称RVA)的递推计算公式 ,为海底多波多分量AVO弹性参数的反演及流体因子预测提供基础数据 .合成数据的计算结果表明 ,本文给出的算法能较可靠地从海底多波多分量记录中提取RVA信息
An algorithm for decomposition of multi wave and multi component data into upgoing and downgoing P wave and S wave was derived in frequency wave number domain in this paper. The reflection coefficient versus incident angle (RVA) was calculated, which can provide foundational data for the AVO inversion of elastic parameters and prediction of fluid factor. The results of the synthetic multi component data show that the information of reliable RVA can be extracted from multi waves and multi component seismic at the sea floor by the method given in this paper. [
An algorithm for decomposition of multi wave and multi component data into upgoing and downgoing P wave and S wave was derived in frequency wave number domain in this paper. The reflection coefficient versus incident angle (RVA) was calculated, which can provide foundational data for the AVO inversion of elastic parameters and prediction of fluid factor. The results of the synthetic multi component data show that the information of reliable RVA can be extracted from multi waves and multi component seismic at the sea floor by the method given in this paper. [
引文
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[2] BergE ,SvenningB ,MatinJ.Multi componentseabottomseismicsurveyingintheNorthSea.64thAnn.Internat.Mtg.,Soc.Expl.Geophys.,ExpandedAbstracts,1994.1231—1236.
[3] LebrunD ,CuerM ,RichardV ,etal.Seabottomversusconventionalacquisition:alinearizedinversionstudy.66thAnn.Internat.Mtg.,Soc.Expl.Geophys.,ExpandedAbstracts,1996,1579—1582.
[4] 顾汉明,王家映,江涛等.海底多波多分量AVO反演岩性参数的敏感性分析.石油物探,1999,38(4):36—43. GUHanMing,WangJiaYing,JiangTao,etal.Sensitivityanalysisofpetrophysicalparameterinversionusingseabottommulti wave,multicomponentAVOdata.GeophysicalProspectingforpetroleum(inChinese),1999,38(4):36—43.
[5] RossCP ,CarlsonDH ,StarrJG .ComparisonofAVOusingoceanbottomseismicandmarinestreamerdata.64thAnn.Internat.Mtg.,Soc.Expl.Geophys.,ExpandedAbstracts,1996.1755—1757.
[6] AmundsenL ,ReitanA .Decompositionofmulti componentsea floordataintoupgoinganddowngoingP andS waves.Geophysics,1995,60(2):563—572.
[7] AmundsenL ,ReitanA .Estimationofsea floorwavevelocitiesanddensityfrompressureandparticlevelocitybyAVOanalysis.Geophysics,1995,60(5):1575—1578.
[8] WapenaarCP ,HerrmannPA ,VerschuurDJetal.Decompositionofmulti componentseismicdataintoprimaryP andSwaveresponses.Geophys.Prosp.,1990,38(3):633—661.
[9] KimNW ,SeriffAJ,MarinePSSPreflectionswithabottomvelocitytransitionzone.Geophysics,1992,57(1):161—170.
[10] YaoChen,ChenXiangGuo,LeiJun.Seismicsyntheticsstudyof4componentsforseafloorreflection.69thAnn.Internat.Mtg.,Soc.Expl.Geophys.,ExpandedAbstracts,1999.804—807.
[11] AkiK ,RichardsPG .QuantitativeSeismology:TheoryandMethods.SanFrancisco:W .H .Freeman&Co.,1980.
[12] CandelSM .AnalgorithmfortheFourierBesseltransform.Comp.Phys.Com.,1981,23(1):52—60.
[13] OppenheimAV ,FriskGV ,MartinezDR .AnalgorithmforthenumericalevaluationoftheHankeltransform.Proc,IEEE ,1978,66(2):264—265.
[14] CandelSM .DualalgorithmforfastCalculationoftheFourierBesseltransform.IEEETrans.Acoust.,Speech,SignalProcessing,1981,ASSP 29(5):963—972.
[15] DongWJ.Elasticwaveradiationfromboreholeseismicsourcesinanisotropicmedia[Ph.D .thesis].U .S .A .:MIT ,1993.
[16] 顾汉明.海底多波多分量地震AVO多尺度弹性参数反演[博士论文].武汉:中国地质大学地球物理系,2000. GUHanMing.Multi resolutioninversionofelasticparametersusingmulti waveandmulti componentseismicAVOdataattheseafloor[Ph.D .thesis].Wuhan;ChinaUniv.ofGeosciences,2000.
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