多次波在采集数据缺失区地震成像中的应用研究
|
摘要
在主要利用地震一次波信息进行成像的背景下,当地震资料采集过程中遇到某些无法放炮而只能放置检波器的障碍地段,会出现地下构造成像信息不足。若此区域地震多次波比较发育,可以尝试将多次波视为有效信息进行利用。在障碍地段的检波点处设置虚拟炮点和虚拟接收点,通过互相关和叠加的方法技术将多次波降阶构建虚拟一次波;通过虚拟一次波偏移成像,实现观测系统障碍区域的多次波成像,并用于补充地震一次波成像信息的缺失,从而获得更加丰富和完整的地下构造成像信息。模型数据和实际资料测试结果证明了该方法技术的可行性和有效性。
Primaries are usually regarded the only seismic signals used for seismic imaging.However,at some obstacle area,shots cannot be deployed,which leads to seismic imaging gap because of missing seismic primaries in the acquired data.Therefore,at the obstacle area with developed multiple,we proposed using multiple imaging to complement the missing seismic primaries imaging.Firstly,cross-correlation and stacking techniques are utilized to construct pseudo-primary from multiples.Then,multiple imaging is realized by pseudo-primary imaging for the obstacle area,which is used for complementing the information of primary imaging and obtain more details about the structures.Tests on Sigsbee2b dataset and field data show that the method is workable and effective.
Primaries are usually regarded the only seismic signals used for seismic imaging.However,at some obstacle area,shots cannot be deployed,which leads to seismic imaging gap because of missing seismic primaries in the acquired data.Therefore,at the obstacle area with developed multiple,we proposed using multiple imaging to complement the missing seismic primaries imaging.Firstly,cross-correlation and stacking techniques are utilized to construct pseudo-primary from multiples.Then,multiple imaging is realized by pseudo-primary imaging for the obstacle area,which is used for complementing the information of primary imaging and obtain more details about the structures.Tests on Sigsbee2b dataset and field data show that the method is workable and effective.
引文
[1]Foster D J,Mosher C C.Suppression of multiple re-flections using the Radon transform[J].Geophysics,1992,57(3):386-395
[2]Lokshtanov D.Multiple suppression by data-consist-ent deconvolution[J].The Leading Eage,1999,18(1):115-119
[3]Lamont M G,Hartley B M,Uren N F.Multiple at-tenuation using the MMO and ISR preconditioning transforms[J].The Leading Eage,1999,18(1):110-114
[4]Berkhout A J,Verschuur D J.Estimation of multiple scattering by iterative inversion,Part I:theoretical considerations[J].Geophysics,1997,62(5):1586-1595
[5]Verschuur D J,Berkhout A J,Wapenaar C P A.A-daptive surface-related multiple elimination[J].Geo-physics,1992,57(9):1166-1177
[6]Guitton A.Multiple attenuation with multidimen-sional prediction-error filter[J].Expanded Abstracts of73 rd Annual Internat SEG Mtg,2003,57-74
[7]Spitz S.Pattern recognition,spatial predictability,and subtraction of multiple events[J].The Leading Edge,1999,18(1):55-58
[8]Reiter E C,Toksoz M N,Keho T H,et al.Imaging with deep-water multiples[J].Geophysics,1991,56(7):1081-1086
[9]Guitton A.Shot-profile migration of multiple reflec-tions[J].Expanded Abstracts of72 nd Annual Inter-nat SEG Mtg,2002,1296-1299
[10]Muijs R,Robertsson J O A,Holliger K.Prestack depth migration of primary and surface-related mul-tiple reflections:Part I—imaging[J].Geophysics,2007,72(2):S59-S69
[11]Remco M J,Robertsson J O A,Klaus H.Prestack depth migration of primary and surface-related mul-tiple reflections:Part II—identification and removal of residual multiples[J].Geophysics,2007,72(2):S71-S76
[12]Liu Y K,Xu C.Reverse time migration of multiples[J].Expanded Abstracts of81 st Annual Internat SEG Mtg,2011,3326-3331
[13]Shan G.Source-receiver migration of multiple reflec-tions[J].Expanded Abstracts of73 rd Annual Inter-nat SEG Mtg,2003,1008-1011
[14]Shan G.Migration of surface-related multiples:tests on the Sigsbee2Bdataset[J].Expanded Abstracts of 73 rd Annual Internat SEG Mtg,2004,1285-1288
[15]单国健.地表多次波应用研究[J].石油物探,2007,46(6):604-610 Shan G J.Application of surface-related multiples[J].Geophysical Prospecting for Petroleum,2007,46(6):604-610
[16]Sheng J.Migration multiples and primaries in CDP data by crosscorrelogram migration[J].Expanded Abstracts of71 st Annual Internat SEG Mtg,2001,1297-1300
[17]Yu J,Schuster G.Crosscorrelogram migration of IVSPWD data[J].Expanded Abstracts of71 st Annu-al Internat SEG Mtg,2001,456-459
[18]Curry W,Shan G.Interpolation of near offsets using multiples and prediction-error filters[J].Expanded Abstracts of78 th Annual Internat SEG Mtg,2008,2421-2424
[19]Wang Y,Luo Y,Schuster G T.Interferometric inter-polation of missing seismic data[J].Geophysics,2009,74(3):SI37-SI45
[20]Berkhout A J,Verschuur D J.Full wavefield migra-tion,utilizing surface and internal multiple scattering[J].Expanded Abstracts of74 th Annual Internat SEG Mtg,2011,3212-3216
[21]叶月明,李振春,仝兆岐,等.双复杂条件下带误差补偿的频率空间域有限差分法叠前深度偏移[J].地球物理学进展,2008,23(1):136-145 Ye Y M,Li Z C,Tong Z Q,et al.Prestack depth mi-gration using F-X finite difference with error com-pensation in duplex complex conditions[J].Progress in geophysics,2008,23(1):136-145
[2]Lokshtanov D.Multiple suppression by data-consist-ent deconvolution[J].The Leading Eage,1999,18(1):115-119
[3]Lamont M G,Hartley B M,Uren N F.Multiple at-tenuation using the MMO and ISR preconditioning transforms[J].The Leading Eage,1999,18(1):110-114
[4]Berkhout A J,Verschuur D J.Estimation of multiple scattering by iterative inversion,Part I:theoretical considerations[J].Geophysics,1997,62(5):1586-1595
[5]Verschuur D J,Berkhout A J,Wapenaar C P A.A-daptive surface-related multiple elimination[J].Geo-physics,1992,57(9):1166-1177
[6]Guitton A.Multiple attenuation with multidimen-sional prediction-error filter[J].Expanded Abstracts of73 rd Annual Internat SEG Mtg,2003,57-74
[7]Spitz S.Pattern recognition,spatial predictability,and subtraction of multiple events[J].The Leading Edge,1999,18(1):55-58
[8]Reiter E C,Toksoz M N,Keho T H,et al.Imaging with deep-water multiples[J].Geophysics,1991,56(7):1081-1086
[9]Guitton A.Shot-profile migration of multiple reflec-tions[J].Expanded Abstracts of72 nd Annual Inter-nat SEG Mtg,2002,1296-1299
[10]Muijs R,Robertsson J O A,Holliger K.Prestack depth migration of primary and surface-related mul-tiple reflections:Part I—imaging[J].Geophysics,2007,72(2):S59-S69
[11]Remco M J,Robertsson J O A,Klaus H.Prestack depth migration of primary and surface-related mul-tiple reflections:Part II—identification and removal of residual multiples[J].Geophysics,2007,72(2):S71-S76
[12]Liu Y K,Xu C.Reverse time migration of multiples[J].Expanded Abstracts of81 st Annual Internat SEG Mtg,2011,3326-3331
[13]Shan G.Source-receiver migration of multiple reflec-tions[J].Expanded Abstracts of73 rd Annual Inter-nat SEG Mtg,2003,1008-1011
[14]Shan G.Migration of surface-related multiples:tests on the Sigsbee2Bdataset[J].Expanded Abstracts of 73 rd Annual Internat SEG Mtg,2004,1285-1288
[15]单国健.地表多次波应用研究[J].石油物探,2007,46(6):604-610 Shan G J.Application of surface-related multiples[J].Geophysical Prospecting for Petroleum,2007,46(6):604-610
[16]Sheng J.Migration multiples and primaries in CDP data by crosscorrelogram migration[J].Expanded Abstracts of71 st Annual Internat SEG Mtg,2001,1297-1300
[17]Yu J,Schuster G.Crosscorrelogram migration of IVSPWD data[J].Expanded Abstracts of71 st Annu-al Internat SEG Mtg,2001,456-459
[18]Curry W,Shan G.Interpolation of near offsets using multiples and prediction-error filters[J].Expanded Abstracts of78 th Annual Internat SEG Mtg,2008,2421-2424
[19]Wang Y,Luo Y,Schuster G T.Interferometric inter-polation of missing seismic data[J].Geophysics,2009,74(3):SI37-SI45
[20]Berkhout A J,Verschuur D J.Full wavefield migra-tion,utilizing surface and internal multiple scattering[J].Expanded Abstracts of74 th Annual Internat SEG Mtg,2011,3212-3216
[21]叶月明,李振春,仝兆岐,等.双复杂条件下带误差补偿的频率空间域有限差分法叠前深度偏移[J].地球物理学进展,2008,23(1):136-145 Ye Y M,Li Z C,Tong Z Q,et al.Prestack depth mi-gration using F-X finite difference with error com-pensation in duplex complex conditions[J].Progress in geophysics,2008,23(1):136-145
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心