串珠状溶洞模型介质波动方程正演与偏移
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摘要
为了揭示溶洞储层的地震波场特征,该文采用相移加插值波场延拓算子,该算子能适应介质速度横向变化和纵向变化、对地层无倾角限制、保振幅且可以避免层间多次波的产生.然后用该算子对根据某地区奥陶系储层溶洞的地质特征所设计的五个串珠状溶洞地质模型进行正演和偏移,并分析波场特征.溶洞储层模型数值模拟的结果揭示了在不同大小、形状、间距、分布位置等情况下溶洞地震波场特征,得出了关于串珠状溶洞介质地震波场特征的一些有意义的结论和认识.
To reveal the wave-field characters of cave reservoir,the paper adopt a phase-shift plus in interpolation wave-field extrapolation operator which can preserve amplitude and suppress inter-bed harmonic wave without restrictions horizontal land vertical changes of medium velocity and layer dip angle.The operator is then used in the forward modeling and migration on the five beads-shaped cave models that based on the geologic features of the corroded caves in an Ordovician reservoir and the resulting wave-field is analyzed.Numerical simulation of the beads-shaped caves show the wave-field features of beads-shaped caves reservoir in different size,different shape,different distance,different distribution position situations and obtain some significant the conclusions.
To reveal the wave-field characters of cave reservoir,the paper adopt a phase-shift plus in interpolation wave-field extrapolation operator which can preserve amplitude and suppress inter-bed harmonic wave without restrictions horizontal land vertical changes of medium velocity and layer dip angle.The operator is then used in the forward modeling and migration on the five beads-shaped cave models that based on the geologic features of the corroded caves in an Ordovician reservoir and the resulting wave-field is analyzed.Numerical simulation of the beads-shaped caves show the wave-field features of beads-shaped caves reservoir in different size,different shape,different distance,different distribution position situations and obtain some significant the conclusions.
引文
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[8]王红落,常旭,陈传仁.基于波动方程有限差分算法的接收函数正演与偏移[J].地球物理学报,2005,48(2):415～422.Wang H L,Chang X,Chen C R.Receiver function forward modeling and migration based on wave-equation finite differ-ence method[J].Chinese J.Geophys.(in Chinese),2005,48(2):415～422.
[9]郑海山,张中杰.横向各向同性(VTI)介质中非线性地震波场模拟[J].地球物理学报,2005,48(3):660～671.Zheng H S,Zhang Z J.Synthetic seismograms of nonlinear seismic waves in anisotropic(VTI)media[J].Chinese J.Geophys.(in Chinese),2005,48(3):660～671.
[10]张新明,刘克安,刘家琦.流体饱和多孔隙介质二维弹性波方程正演模拟的小波有限元法[J].地球物理学报,2005,48(5):1156～1166.Zhang X M,Liu K A,Liu J Q.A wavelet finite element method for the2-D wave equation in fluid-saturated porous media[J].Chinese J.Geophys.(in Chinese),2005,48(5):1156～1166.
[11]卢明辉,唐建侯,杨慧珠,胡彬.正交各向异性介质P波走时分析及Thomsen参数反演[J].地球物理学报,2005,48(5):1167～1171.Lu M H,Tang J H,Yang HZ,Hu B.P-wave traveltime a-nalysis and Thomsen parameters inversion in orthorhombic media[J].Chinese J.Geophys.(in Chinese),2005,48(5):1167～1171.
[12]徐震,徐鸣洁,王良书,刘建华,钟锴,童蔚蔚.用接收函数Ps转换波研究地壳各向异性——以哀牢山-红河断裂带为例[J].地球物理学报,2006,49(2):438～448.Xu Z,Xu MJ,Wang L S,Liu J H,Zhong K,Tong W W.Astudy on crustal anisotropy using Pto S converted phase of the receiver function:Application to Ailaoshan-Red River fault zone[J].Chinese J.Geophys.(in Chinese),2006,49(2):438～448.
[13]杜正聪,贺振华,黄德济.逢洞储层地震波场数值模拟[J].地球物理学进展,2003,26(2):102～108.Du Z C,He Z H,Huang D J.Seismic wavefield numerical simulation of fractured reservoir[J].Progress in Geophysics(in Chinese),2003,26(2):102～108.
[2]贺振华,等.数学检波器与波动方程地震叠前正演[J].成都理工大学学报(自然科学版),2004,31(6):675.He Z H,et al.Mathematical geophones with applications to seismic prestacking forward modeling[J].Journal of Chengdu University of Technology(Science&Technology Edition),2004,31(6):675.
[3]贺振华,等.等时叠加波动方程叠前正演[A].物探化探计算技术.2005.27(3):195.He Z H,et al.Seismic pre-stacking forward modeling based on equal-time stack principle and one-way wave equation[A]Computing Techniques For Giophysical and Geochenical Ex-ploration,2005.27(3):195.
[4]胡光岷,等.叠前正演模拟与偏移的网络并行计算[A].物探化探计算技术.2001.23(4):319.Hu G M,et al.The network parallel computing for prestack depth migration and forward modeling[A]Computing Tech-niques For Giophysical and Geochenical Exploration,2001,23(4):319.
[5]熊高君,等.共炮记录正演模拟检波点下延记录原理[J].石油物探,1999,38(2):43.Xiong G J,et al.Geophone record forward modeling from common-shot record[J].Geophysical Prospecting for Petrole,1999,38(2):43.
[6]王德利,何樵登,韩立国.裂隙型单斜介质中多方位地面三分量记录模拟[J].地球物理学报,2005,48(2):386～393.Wang D L,He Q D,Han L G.Multi-azimuth three-compo-nent surface seismic modeling for cracked monoclinic media[J].Chinese J.Geophys.(in Chinese),2005,48(2):386～393.
[7]匡斌,王华忠,季玉新,马在田.任意复杂介质中主能量法地震波走时计算[J].地球物理学报,2005,48(2):394～398.Kuang B,Wang H Z,Ji Y X,Ma Z T.Main energy travel time calculationin arbitrary velocity distribution[J].Chinese J.Geophys.(in Chinese),2005,48(2):394～398.
[8]王红落,常旭,陈传仁.基于波动方程有限差分算法的接收函数正演与偏移[J].地球物理学报,2005,48(2):415～422.Wang H L,Chang X,Chen C R.Receiver function forward modeling and migration based on wave-equation finite differ-ence method[J].Chinese J.Geophys.(in Chinese),2005,48(2):415～422.
[9]郑海山,张中杰.横向各向同性(VTI)介质中非线性地震波场模拟[J].地球物理学报,2005,48(3):660～671.Zheng H S,Zhang Z J.Synthetic seismograms of nonlinear seismic waves in anisotropic(VTI)media[J].Chinese J.Geophys.(in Chinese),2005,48(3):660～671.
[10]张新明,刘克安,刘家琦.流体饱和多孔隙介质二维弹性波方程正演模拟的小波有限元法[J].地球物理学报,2005,48(5):1156～1166.Zhang X M,Liu K A,Liu J Q.A wavelet finite element method for the2-D wave equation in fluid-saturated porous media[J].Chinese J.Geophys.(in Chinese),2005,48(5):1156～1166.
[11]卢明辉,唐建侯,杨慧珠,胡彬.正交各向异性介质P波走时分析及Thomsen参数反演[J].地球物理学报,2005,48(5):1167～1171.Lu M H,Tang J H,Yang HZ,Hu B.P-wave traveltime a-nalysis and Thomsen parameters inversion in orthorhombic media[J].Chinese J.Geophys.(in Chinese),2005,48(5):1167～1171.
[12]徐震,徐鸣洁,王良书,刘建华,钟锴,童蔚蔚.用接收函数Ps转换波研究地壳各向异性——以哀牢山-红河断裂带为例[J].地球物理学报,2006,49(2):438～448.Xu Z,Xu MJ,Wang L S,Liu J H,Zhong K,Tong W W.Astudy on crustal anisotropy using Pto S converted phase of the receiver function:Application to Ailaoshan-Red River fault zone[J].Chinese J.Geophys.(in Chinese),2006,49(2):438～448.
[13]杜正聪,贺振华,黄德济.逢洞储层地震波场数值模拟[J].地球物理学进展,2003,26(2):102～108.Du Z C,He Z H,Huang D J.Seismic wavefield numerical simulation of fractured reservoir[J].Progress in Geophysics(in Chinese),2003,26(2):102～108.
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