分频反演方法及应用
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摘要
现今常用的地震反演技术多以地震主频控制反演结果,地震资料有效频带中的相对高频和相对低频的潜力没有充分利用,反演结果也不尽如人意。与目前的反演方法有所不同,分频反演是依靠测井和地震资料,利用支持向量机的方法研究不同探测频率下的振幅响应(AVF),并将AVF作为独立信息引入反演,建立起测井波阻抗曲线与地震波形间的非线性映射关系,充分利用地震资料中的低、中、高频带信息,减少薄层反演的不确定性,从而得到高分辨率的反演结果。模型计算和实际资料的处理证明了该方法的有效性和准确性。分频反演也是一种无子波提取、无初始模型的高分辨率非线性反演方法。
Currently used seismic inversive technology mostly is the way controlled by seismic dominant frequency that makes the potential of relatively higher frequency and lower frequency in useful band without full utilization, so that the inversive results are unsatisfactory. Differing from the current inversive methods, the frequency-divided inversion is relying on logging and seismic data, u-sing the methods of support vector computer to study the amplitude response in different detective frequencies (amplitude versus frequency, simply called AVF), taking AVF as independent information of inversion and creating the non-linear mapping relationship between wave impedance curves of logging data and seismic waveforms, fully using the information of low, medium and high frequencies in seismic data to reduce the uncertainty of thin-layer inversion, so that the high-resolution inversive results could be achieved. The computation of models and real data processing showed the effectiveness and correctness of the methods. Frequency-divided inversion is also the high-resolution non-linear inversive method without wavelet detection and without initial model.
Currently used seismic inversive technology mostly is the way controlled by seismic dominant frequency that makes the potential of relatively higher frequency and lower frequency in useful band without full utilization, so that the inversive results are unsatisfactory. Differing from the current inversive methods, the frequency-divided inversion is relying on logging and seismic data, u-sing the methods of support vector computer to study the amplitude response in different detective frequencies (amplitude versus frequency, simply called AVF), taking AVF as independent information of inversion and creating the non-linear mapping relationship between wave impedance curves of logging data and seismic waveforms, fully using the information of low, medium and high frequencies in seismic data to reduce the uncertainty of thin-layer inversion, so that the high-resolution inversive results could be achieved. The computation of models and real data processing showed the effectiveness and correctness of the methods. Frequency-divided inversion is also the high-resolution non-linear inversive method without wavelet detection and without initial model.
引文
[1]刘成斋,冉建斌,样永生．稀疏脉冲和基于模型反演在 王家岗沙四段砂岩油藏精细勘探中的应用．石油地球 物理勘探,2002,37(4):401～406
[2]白彦彬,杨长春等．地质规律约束下的波阻抗反演．石 油物探,2002,41(1):61～64
[3]张永刚．地震波阻抗反演技术的现状和发展．石油物 探,2002,41(4):385～390
[4]卢占武,韩立国．波阻抗反演技术研究进展．世界地 质,2002,21(4):372～377
[5]靳军,李天明等．应用测井约束反演开展储层砂体描 述．新疆石油地质,2003,24(1):72～74
[6]沈财余,崔汝国．影响测井约束地震反演地质效果因 素的分析．物探与化探,2003,27(2):123～128
[7]罗权生,吴永富等．模型反演技术在浅层储集层研究 中的应用．新疆石油地质,2000,21(4):331～332
[8]刘磊,郑晓东．应用测井约束地震反演技术描述桩106 断块储集层．石油勘探与开发,1999．26(5):80～82
[9]于建国,路慎强等．测井约束反演技术在史南浊积砂 体描述中的应用．石油物探,2001,40(2):102～107
[10]廖曦,马波等．应用JASON软件进行砂体及含气性预 测．天然气勘探与开发,2002,25(3):34~43
[11] Simon Haykin. Neural networks: a comprehensive Foundation. Second edition,1999
[12] Zeng Hongliu, Charies Kerans. Amplitude versus frequency-applications to seismic stratigraphy and reservoir characterization. SEG,2000
[2]白彦彬,杨长春等．地质规律约束下的波阻抗反演．石 油物探,2002,41(1):61～64
[3]张永刚．地震波阻抗反演技术的现状和发展．石油物 探,2002,41(4):385～390
[4]卢占武,韩立国．波阻抗反演技术研究进展．世界地 质,2002,21(4):372～377
[5]靳军,李天明等．应用测井约束反演开展储层砂体描 述．新疆石油地质,2003,24(1):72～74
[6]沈财余,崔汝国．影响测井约束地震反演地质效果因 素的分析．物探与化探,2003,27(2):123～128
[7]罗权生,吴永富等．模型反演技术在浅层储集层研究 中的应用．新疆石油地质,2000,21(4):331～332
[8]刘磊,郑晓东．应用测井约束地震反演技术描述桩106 断块储集层．石油勘探与开发,1999．26(5):80～82
[9]于建国,路慎强等．测井约束反演技术在史南浊积砂 体描述中的应用．石油物探,2001,40(2):102～107
[10]廖曦,马波等．应用JASON软件进行砂体及含气性预 测．天然气勘探与开发,2002,25(3):34~43
[11] Simon Haykin. Neural networks: a comprehensive Foundation. Second edition,1999
[12] Zeng Hongliu, Charies Kerans. Amplitude versus frequency-applications to seismic stratigraphy and reservoir characterization. SEG,2000
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