偏移速度分析技术新进展
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摘要
倾角校正后的剩余NMO方法、剩余层析成像反演估算速度结构方法、提高速度分析效率的波径偏移法、角度域共成像道集的速度更新、差异相似优化法自动速度分析等已发展成为最新的偏移速度分析技术。但每种方法都有其适用条件和一定的效果 ,只有根据实际资料合理使用 ,才能实现地震资料的准确成像。
The newly emerged migration velocity analysis methods included residual NMO after dip correction, velocity estimation with residual tomographic inversion, fast velocity analysis by wavepath migration, velocity analysis for common image gathers in the reflection angle domain, and automatic velocity analysis by differential semblance optimization. Each method has its own practicability and applicability. To reach desired migration results, suitable method or a combination of different methods should be adopted according to the data in question.
The newly emerged migration velocity analysis methods included residual NMO after dip correction, velocity estimation with residual tomographic inversion, fast velocity analysis by wavepath migration, velocity analysis for common image gathers in the reflection angle domain, and automatic velocity analysis by differential semblance optimization. Each method has its own practicability and applicability. To reach desired migration results, suitable method or a combination of different methods should be adopted according to the data in question.
引文
1 马在田.地震成像技术[M ].北京:石油工业出版社,1989.213页
2 杨文采,李幼铭.应用地震层析成像[M ].北京:地质出版社,1993.142～160
3 ReshefM .Depthmigrationfromirregularsurfaceswithdepthextrapolationmethods[J].Geophysics,1991,56(1):119～122
4 RekdalT ,DoornbosDJ .Amodifiedformofdiffractiontomographytoimageboundarystructures[J].Geophysics,1993,58(8):1136～1147
5 TsvankinI ,ThornsenL .Inversionofreflectiontraveltimefortransverseisotropy[J].Geophysics,1995,60(4):1095～1107
6 JinS ,WuRS .Depthmigrationwithawindowedscreenpropagator[J].JournalofSeismicExploration,1999,(8):27～38
7 YanLanlan,LarryR ,LawtonLD .Migrationvelocityanalysisbycurvalturemeasurementandstacking power[J].ExpandedAbstractsof71stAnnualInternatSEGMtg,2001,873～878
8 ZhouHongbo,GuoJiuying,YoungK ,etal.Analternativeresidual curvaturevelocityupdatingmethodfor prestackdepthmigration[J].ExpandedAbstractsof71stAnnualIn ternatSEGMtg,2001,877～880
9 SunHongchuan.Fastvelocityanalysisbywavepathmi gration:A2Dfielddataexample[J ].ExpandedAb stractsof71stAnnualInternatSEGMtg,2001,881～884
10 LiuWei,PopoviciM ,BevcD .3Dmigrationvelocityanalysisforcommonimagegathersinthereflectionangledomain[J].ExpandedAbstractsof71stAnnualInternatSEGMtg,2001,885～888
11 MulderWA ,tenKroodeA .Automaticvelocityanalysisbydifferentialsemblanceoptimization[J].ExpandedAb stractsof71stAnnualInternatSEGMtg,2001,893～896
2 杨文采,李幼铭.应用地震层析成像[M ].北京:地质出版社,1993.142～160
3 ReshefM .Depthmigrationfromirregularsurfaceswithdepthextrapolationmethods[J].Geophysics,1991,56(1):119～122
4 RekdalT ,DoornbosDJ .Amodifiedformofdiffractiontomographytoimageboundarystructures[J].Geophysics,1993,58(8):1136～1147
5 TsvankinI ,ThornsenL .Inversionofreflectiontraveltimefortransverseisotropy[J].Geophysics,1995,60(4):1095～1107
6 JinS ,WuRS .Depthmigrationwithawindowedscreenpropagator[J].JournalofSeismicExploration,1999,(8):27～38
7 YanLanlan,LarryR ,LawtonLD .Migrationvelocityanalysisbycurvalturemeasurementandstacking power[J].ExpandedAbstractsof71stAnnualInternatSEGMtg,2001,873～878
8 ZhouHongbo,GuoJiuying,YoungK ,etal.Analternativeresidual curvaturevelocityupdatingmethodfor prestackdepthmigration[J].ExpandedAbstractsof71stAnnualIn ternatSEGMtg,2001,877～880
9 SunHongchuan.Fastvelocityanalysisbywavepathmi gration:A2Dfielddataexample[J ].ExpandedAb stractsof71stAnnualInternatSEGMtg,2001,881～884
10 LiuWei,PopoviciM ,BevcD .3Dmigrationvelocityanalysisforcommonimagegathersinthereflectionangledomain[J].ExpandedAbstractsof71stAnnualInternatSEGMtg,2001,885～888
11 MulderWA ,tenKroodeA .Automaticvelocityanalysisbydifferentialsemblanceoptimization[J].ExpandedAb stractsof71stAnnualInternatSEGMtg,2001,893～896
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