| 地震波场叠前零偏移距化算法研究 |
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| 引用本文： | 孙渊,陈树凯,梁丽敏.地震波场叠前零偏移距化算法研究[J].煤田地质与勘探,2007,35(2):73-75. |
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| 作者姓名： | 孙渊 陈树凯 梁丽敏 |
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| 作者单位： | 1. 长安大学地测学院,陕西,西安,710054
2. 中石油辽河油田分公司勘探开发研究院,辽宁,盘锦,124010 |
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| 摘 要： | 在能源地震勘探中,为了更好地实现叠前倾斜地层的时差校正,提高速度分析和叠加的精度,提出了一种快速实现叠前部分偏移的算法,即零偏移距化(MZO)算法。该算法应用波场外推的技术及波动方程偏移的有限差分算法,可在共偏移道集上实现,对于3D资料须应用同方位角共偏移距道集。经实际资料测试,其计算速度比同类的DMO方法快一倍,且处理效果相当。
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| 关 键 词： | MZO DMO 波场外推 有限差分 倾斜地层 |
| 文章编号： | 1001-1986(2007)02-0073-03 |
| 修稿时间： | 2006年8月7日 |
Research on seismic wave field pre-stack migration to zero offset (MZO) algorithm |
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| SUN Yuan,CHEN Shu-kai,LIANG Li-min.Research on seismic wave field pre-stack migration to zero offset (MZO) algorithm[J].Coal Geology & Exploration,2007,35(2):73-75. |
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| Authors: | SUN Yuan CHEN Shu-kai LIANG Li-min |
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| Abstract: | In energy resource seismic prospecting,to best realize time difference correction of pre-stack tilted stratum,advance velocity analysis and overlay precision,present a sort of celerity realize pre-stack partial migration algorithm,called migration to zero offset(MZO) algorithm.The algorithm uses the technology of wave field extrapolation and the wave equation migration by finite difference approach,which can be used in common offset gathers,for 3D material requires common offset gathers with the same azimuth angle.By real data tests,considering adopting the clearly fast algorithm,the speed of calculation is two times faster than the allied NMO means,and even get the quite effects. |
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| Keywords: | MZO(migration to zero offset) DMO(dip moveout) wave field extrapolation finite difference tilted stratum |
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