| 弹性波的叠前相移偏移 |
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| 引用本文： | 尧德中,周熙襄.弹性波的叠前相移偏移[J].石油地球物理勘探,1993,28(2):133-137. |
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| 作者姓名： | 尧德中 周熙襄 |
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| 作者单位： | 成都电子科技大学，成都地质学院应用地球物理系 |
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| 摘 要： | 目前,弹性波成像仍处于研究阶段。本文根据声波相移偏移的思想,实现了弹性波资料的相移偏移。该方法先从单分量位移弹性波方程出发,导出基于位移场的相移偏移公式。然后,借助时-空域的纵、横波分离结果,实现了位移场的弹性波叠前相移偏移。另外,文中对互相关成像法和时间成像法进行了对比试验。试验结果表明,两种成像方法的效果相当,但时间成像法的效率较高。
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| 关 键 词： | 弹性波 相移偏移 时间成象 |
Phase-shift migration of prestack elastic wave data. |
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| Yao Dezhong Zhou Xixiang chengdu University of Electronic Science and Technology,No.Phase-shift migration of prestack elastic wave data.[J].Oil Geophysical Prospecting,1993,28(2):133-137. |
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| Authors: | Yao Dezhong Zhou Xixiang chengdu University of Electronic Science and Technology No |
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| Affiliation: | Yao Dezhong Zhou Xixiang chengdu University of Electronic Science and Technology,No.5 The Second Section of North Jianshe Road,Chengdu City,Sichuan Province,Internal Postcode:610054 |
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| Abstract: | Elastic wave image remains in research stage.Phase-shift migration of elastic wave data is based on phase-shift migration of acoustic wave data.First,phase-shift migration formula based on displacement field is derived from elastic wave equation of single component in displacement field.Then,phase-shift migration of prestack elastic wave data in displacement field is achieved with the aid of seperating com- pressional wave from shear wave in time-space domain. Crosscorrelation imaging is compared with time imaging.The comparison shows that time imaging is more efficient than crosscorrelation imaging,with their results equivalent. |
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| Keywords: | elastic wave phase-shift migration time image |
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