三维多分量地震资料处理技术研究
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摘要
在三维多分量地震资料处理中,鉴于多分量的矢量波场特征和转换波传播路径非对称的特殊性,研究和开发了适合多分量地震资料处理的专用方法。这些处理方法包括:三维多分量地震资料的水平分量旋转、多分量叠前去噪、转换波静校正、纵波和横波垂直速度比计算、转换波共渐进线转换点面元和共转换点面元抽取、各向异性叠加速度分析、各向异性动校正、叠前时间偏移速度分析、直射线和弯曲射线的各向异性叠前时间偏移等,由此组成了最基本的三维多分量地震资料处理流程。将上述处理流程应用于实际三维多分量地震资料的处理,取得了令人满意的处理效果。
Special technologies suitable for 3D multi-component data processing need to be developed due to the vector particularity of multi-component data and asymmetric propagation path of converted wave(C-wave).The series of technologies include geometry rotation.multi-component prestack denoising,C-wave statics,υ_P /υ_S calculation,C-wave common asymptotic conversion points(ACP) binning,C-wave common conversion points(CCP) binning,anisotropic stack velocity analysis,anisotropic normal moveout(NMO) correction,prestack time migration(PSTM) velocity analysis,anisotropic PSTM processing and band-ray anisotropic PSTM etc, which composes of the basic 3D multi-component data processing flow.The above processing workflow is applied to actual 3D data, and ideal results have been achieved.
Special technologies suitable for 3D multi-component data processing need to be developed due to the vector particularity of multi-component data and asymmetric propagation path of converted wave(C-wave).The series of technologies include geometry rotation.multi-component prestack denoising,C-wave statics,υ_P /υ_S calculation,C-wave common asymptotic conversion points(ACP) binning,C-wave common conversion points(CCP) binning,anisotropic stack velocity analysis,anisotropic normal moveout(NMO) correction,prestack time migration(PSTM) velocity analysis,anisotropic PSTM processing and band-ray anisotropic PSTM etc, which composes of the basic 3D multi-component data processing flow.The above processing workflow is applied to actual 3D data, and ideal results have been achieved.
引文
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[4]黄中玉,谢康年.P-SV波叠前反射点水平偏移[J].石油物探,1986,25(2):34-40
[5]Li X Y.Converted-wave moveout analysis revisited:the search for a standard approach[J].Expanded Abstracts of 73~(th) Annual Internat SEG Mtg,2003,805-808
[6]Dai H C,Li X Y.Anisotropy migration and model building for 4C seismic data:A case study from Alba [J].Expanded Abstracts of 71~(st) Annual Internat SEG Mtg,2001,795-798
[7]Alford R M.Shear data in the presence of azimuthal [J].Expanded Abstracts of 56~(th) Annual Internat SEG Mtg,1986,476-479
[8]黄中玉,高林,徐亦鸣,等.三分量数据的偏振分析及其应用[J].石油物探,1996,35(2):9-16
[9]Sun C W,Martinez R D.3D Kirchhhoff PS-wave prestack time migration for V(z) and VTI media [J].Expanded Abstracts of 73~(rd) Annual Internat SEG Mtg,2003,957-960
[2]Garotta R,Michon D.Comparisions Between P-SH- SV and Converted Waves[J].Expanded Abstracts of 52~(nd) Annual Internat SEG Mtg,1982,61-63
[3]王维佳,徐亦鸣,何晓冬.纵波与转换波联合勘探[J].石油物探,1983,22(1):84-94
[4]黄中玉,谢康年.P-SV波叠前反射点水平偏移[J].石油物探,1986,25(2):34-40
[5]Li X Y.Converted-wave moveout analysis revisited:the search for a standard approach[J].Expanded Abstracts of 73~(th) Annual Internat SEG Mtg,2003,805-808
[6]Dai H C,Li X Y.Anisotropy migration and model building for 4C seismic data:A case study from Alba [J].Expanded Abstracts of 71~(st) Annual Internat SEG Mtg,2001,795-798
[7]Alford R M.Shear data in the presence of azimuthal [J].Expanded Abstracts of 56~(th) Annual Internat SEG Mtg,1986,476-479
[8]黄中玉,高林,徐亦鸣,等.三分量数据的偏振分析及其应用[J].石油物探,1996,35(2):9-16
[9]Sun C W,Martinez R D.3D Kirchhhoff PS-wave prestack time migration for V(z) and VTI media [J].Expanded Abstracts of 73~(rd) Annual Internat SEG Mtg,2003,957-960
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