折射层析反演静校正及其在伊朗卡山地区的应用
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摘要
折射层析反演静校正能够较好地解决复杂近地表引起的静校正量问题。该技术最新的算法结合了首波法和回转波法的优点,利用所有偏移距信息进行反演,减少了复杂地表和地质条件下速度-深度模型的不确定性。利用反演出的模型分别求取激发点和接收点的静校正量,可以消除长、短波长静校正量的影响。伊朗卡山地区地震资料的近地表校正效果证明了该方法的有效性。
Refraction tomographic inversion static correction can resolve the statics problems resulted from the complex near-surface conditions. The new technique combines advantages of head-wave and turning-wave to make inversion using offset information to reduces uncertainty of velocity-depth model.The statics volume of shots and receivers respectively can be obtained from the near-surface model to remove influences of long and short wave statics. The technique has been applied to data processing of Kashan Block in Iran , and has proved to effective.
Refraction tomographic inversion static correction can resolve the statics problems resulted from the complex near-surface conditions. The new technique combines advantages of head-wave and turning-wave to make inversion using offset information to reduces uncertainty of velocity-depth model.The statics volume of shots and receivers respectively can be obtained from the near-surface model to remove influences of long and short wave statics. The technique has been applied to data processing of Kashan Block in Iran , and has proved to effective.
引文
[1] Marsden D. Static correction:A review. The Leading Edge, 1993,12(2):115-120
[2]李录明,罗省贤．复杂三维表层模型层析反演与静校正．石油 地球物理勘探,2003,38(16):636-638
[3] Zhang J and Toksoz M N. Nonlinear refraction traveltimc tomography: Geophysics, 1998,63,1726-1737
[4] Osypov K. Robust refraction tomography. Expanded Abstract o-f 70th SEG Annual Internat. Mtg.,2000:2032-2035
[5] Van der Sluis A and Van der Vorst H A. SIRT- and CG-type methods for the iterative solutions of sparse linear least-squares problems. Linear Algebra Appl., 1990,130:257-302
[6] Ryzhikov G. Biryulina M and Hanyga A. 3-D nonlinear inversion by entropy of image contrast optimization: Nonlinear Processes . Geophysics, 1995,70 (2): 228-240
[2]李录明,罗省贤．复杂三维表层模型层析反演与静校正．石油 地球物理勘探,2003,38(16):636-638
[3] Zhang J and Toksoz M N. Nonlinear refraction traveltimc tomography: Geophysics, 1998,63,1726-1737
[4] Osypov K. Robust refraction tomography. Expanded Abstract o-f 70th SEG Annual Internat. Mtg.,2000:2032-2035
[5] Van der Sluis A and Van der Vorst H A. SIRT- and CG-type methods for the iterative solutions of sparse linear least-squares problems. Linear Algebra Appl., 1990,130:257-302
[6] Ryzhikov G. Biryulina M and Hanyga A. 3-D nonlinear inversion by entropy of image contrast optimization: Nonlinear Processes . Geophysics, 1995,70 (2): 228-240
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