| 基于大炮初至的近地表层析反演方法研究及应用 |
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| 引用本文： | 杨晶,徐维秀,宋建国.基于大炮初至的近地表层析反演方法研究及应用[J].物探与化探,2011,35(4):499-504. |
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| 作者姓名： | 杨晶 徐维秀 宋建国 |
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| 作者单位： | 1. 中国石化集团胜利石油管理局地球物理勘探开发公司,山东东营,257086
2. 中国石油大学地球资源信息学院,山东青岛,266555 |
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| 基金项目： | 国家重大专项(2008ZX05006-004)资助 |
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| 摘 要： | 详细研究了射线追踪、层析反演方法原理以及层析反演数值求解算法,提出了利用大炮初至直接建立初始地震模型,由小折射和微测井进行约束的层析反演近地表速度模型的处理流程,提出了基于多次回溯的高精度快速射线追踪算法和层析反演数值求解算法。采用双重网格技术提高正演模拟计算精度和层析反演的成像质量,另外,充分考虑多种质量控制方案,确保最终的反演速度模型精确。设计了10种不同地表地质条件的理论模型,进行模型试算,并在实际生产中应用,理论模型试算和实际资料反演结果证明了本文方法的正确性。
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| 关 键 词： | 双重网格 射线追踪 大炮初至 层析反演 近地表 速度模型 |
THE APPLICATION OF THE NEAR SURFACE TOMOGRAPHY INVERSION METHOD BASED ON THE FIRST ARRIVAL |
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| YANG Jing,XU Wei-xiu,SONG Jian-guo.THE APPLICATION OF THE NEAR SURFACE TOMOGRAPHY INVERSION METHOD BASED ON THE FIRST ARRIVAL[J].Geophysical and Geochemical Exploration,2011,35(4):499-504. |
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| Authors: | YANG Jing XU Wei-xiu SONG Jian-guo |
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| Institution: | YANG Jing1,XU Wei-xiu1,SONG Jian-guo2 (1.Geophysical Exploration and Development Corp.of Shengli Oilfield,SINOPEC,Dongying 257086,China,2.College of Earth Resource Information,China University of Geosciences,Qingdao 266555,China) |
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| Abstract: | A detailed study of ray tracing,tomographic inversion method and numerical tomographic inversion algorithm were performed and,on such a basis,the method of using first arrival of shot to directly establish the initial seismic model was put forward.In addition,the tomographic inversion of near-surface velocity model process flow with reference to the refraction and logging and the high-precision rapid ray tracing method by multi-retracing and SIRT tomographic inversion were also suggested.The double grid tec... |
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| Keywords: | double grid ray tracing first arrival tomographic inversion near surface velocity model |
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