波动方程叠前成像数据规则化技术研究与应用
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摘要
随着油田勘探开发工作的不断深入,对地震成像的精度要求越来越高。成像方法从传统的克希霍夫叠前偏移方法转向精度更高的波动方程算法,而波动方程算法对输入地震资料的要求较为苛刻。在分析常规数据规则化方法特点的基础上,提出了基于DMO与反DMO的数据规则化方法,满足了叠前波动方程成像条件的要求。
With the deep development of oilfield exploration and development,the demand on the seismic imaging accuracy was higher.The imaging was converted to wave equation method from conventional Kirchhoff prestack migration method.The wave equation method was more accurate and had more requirements on seismic information input relatively.By analyzing the features of conventional data regularization method,a data regularization method based on DMO and inverse DMO is presented and studied in this article,which can satisfy the imaging conditions of prestack wave equation method.
With the deep development of oilfield exploration and development,the demand on the seismic imaging accuracy was higher.The imaging was converted to wave equation method from conventional Kirchhoff prestack migration method.The wave equation method was more accurate and had more requirements on seismic information input relatively.By analyzing the features of conventional data regularization method,a data regularization method based on DMO and inverse DMO is presented and studied in this article,which can satisfy the imaging conditions of prestack wave equation method.
引文
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[2]国九英,周光元,俞寿朋.F-K域等道距道内插[J].石油地球物理勘探,1996,31(1):28～34.
[3]刘保童.一种基于傅里叶变换的去假频内插方法及应用[J].煤田地质与勘探,2009,37(2):63～67.
[4]刘保童.有空间假频时多道信号的一种插值方法[J].甘肃联合大学学报(自然科学版),2008,22(2):53～57.
[5]宜明理,严又生,魏新,等.F-K域抗假频道内插[J].石油物探,2001,40(2):36～41.
[6]徐蔚亚,王建民,马在田.VSP数据波动方程叠前深度偏移成像及立体地震成像[J].石油地球物理勘探,2001,36(5):517～525.
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