复杂地表共反射面元叠加技术应用与发展前景
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摘要
复杂地表共反射面元(CRS)叠加技术可以直接应用于未作静校正的数据。在基准面重建时,利用CRS运动学波场参数可将CRS叠加剖面校正到某一选定的水平面上。在复杂地表CRS叠加中,波场三参数的耦合需要用到组合参数优化策略,因此实际处理过程中采用模拟退火算法来实现。地震数据的试算表明,复杂地表CRS叠加得出的剖面比常规处理剖面有较高信噪比和同相轴连续性。另外,对CRS叠加技术的几个发展方向和研究热点进行了总结。
Common reflection surface (CRS) stack method that takes into account the effects of rugged topography can be applied directly to the prestack data without static correction. In reda-tuming, CRS-stacked ZO section can be scaled to a chosen planar measurement level with kinematic wavefield attributes. Because of the three kinematic parameters coupling with each other, we used simulated annealing algorithm to solve the problem. Model data and real data tests indicate that the results are much better than those of conventional stack in terms of S/N ratio and continuity of reflection events. This paper summarized the developing trends and hot issues of common reflection surface stack.
Common reflection surface (CRS) stack method that takes into account the effects of rugged topography can be applied directly to the prestack data without static correction. In reda-tuming, CRS-stacked ZO section can be scaled to a chosen planar measurement level with kinematic wavefield attributes. Because of the three kinematic parameters coupling with each other, we used simulated annealing algorithm to solve the problem. Model data and real data tests indicate that the results are much better than those of conventional stack in terms of S/N ratio and continuity of reflection events. This paper summarized the developing trends and hot issues of common reflection surface stack.
引文
1李振春,姚云霞,马在田等．基于参数多级优化的共反射面叠加方法及其应用[J]．石油地球物理勘探,2003, 38(2):156～161
2李振春,姚云霞,马在田等．共反射面道集偏移速度建模[J]．地震学报,2003,25(4):406-414
3谭未一,杨长春,李瑞忠等．共反射面元叠加的实现途径及流程[J]．地球物理学进展,2004,19(2):325-330
4王华忠,杨锴,马在田．共反射面元叠加的应用理论——从共反射点到共反射面元[J]．地球物理学报, 2004,47(1):137～142
5杨锴,王华忠,马在田．共反射面元叠加的应用实践[J]．地球物理学报,2004,47(2):327-331
6 Zhang Y, Hubral P. 2D ZO CRS stack and redatuming for a complex top-surface topography [J]. Expanded Abstracts of 72nd Annual International SEG Meeting, 2002,2051-2053
7 Pedro Chira-Oliva, Joao C R, Hubral P, et al. 2-D ZO CRS stack by considering an acquisition line with smooth topography[R]. WIT Reports,2003,36-47
8 Li Z H, Sun X D, Zhao J Z, et al. Common reflection surface stack based on complex top surface topography [R]. BGP Technical Seminar, Dalian China, 2004, 55-57
9李振春,孙小东,刘洪．复杂地表条件下共反射面元(CRS)叠加方法研究[J]．地球物理学报,2006,49(6): 1 794～1 801
10 Jaeger R, Mann J, Hocht G, et al. Common-reflection-surface stack: Image and attributes [J]. Geophysics, 2001,66(1):97-109
11 Schleicher J,Tygel M,Hubral P. Parabolic and hyperbolic paraxial two-point traveltimes in 3D media[J]. Geophysical Prospecting,1993,41(4) :495 -514
12 Tygel M,Schleicher J,Hubral P. A unified approach to 3-D seismic reflection imaging,PartⅡ:Theory[J]. Geophysics,1996,61(3). 759-775
13 Ursin B. Quadratic wavefront and traveltime approximation in inhomogeneous layered media with curved interfaces[J]. Geophysics, 1982, 47 ( 7 ): 1 012 -1 021
14 Thore P D,de Bazelaire E,Ray M P. Three parameter equation-. An efficient tool to enhance the stack[J]. Geophysics,1994,59(2):297-300
15 Hubral P,Schleicher J,Tygel M. A unified approach to 3-D seismic reflection imaging, PartⅠ: Basic concepts [J]. Geophysics, 1996,61(3) :742-758
2李振春,姚云霞,马在田等．共反射面道集偏移速度建模[J]．地震学报,2003,25(4):406-414
3谭未一,杨长春,李瑞忠等．共反射面元叠加的实现途径及流程[J]．地球物理学进展,2004,19(2):325-330
4王华忠,杨锴,马在田．共反射面元叠加的应用理论——从共反射点到共反射面元[J]．地球物理学报, 2004,47(1):137～142
5杨锴,王华忠,马在田．共反射面元叠加的应用实践[J]．地球物理学报,2004,47(2):327-331
6 Zhang Y, Hubral P. 2D ZO CRS stack and redatuming for a complex top-surface topography [J]. Expanded Abstracts of 72nd Annual International SEG Meeting, 2002,2051-2053
7 Pedro Chira-Oliva, Joao C R, Hubral P, et al. 2-D ZO CRS stack by considering an acquisition line with smooth topography[R]. WIT Reports,2003,36-47
8 Li Z H, Sun X D, Zhao J Z, et al. Common reflection surface stack based on complex top surface topography [R]. BGP Technical Seminar, Dalian China, 2004, 55-57
9李振春,孙小东,刘洪．复杂地表条件下共反射面元(CRS)叠加方法研究[J]．地球物理学报,2006,49(6): 1 794～1 801
10 Jaeger R, Mann J, Hocht G, et al. Common-reflection-surface stack: Image and attributes [J]. Geophysics, 2001,66(1):97-109
11 Schleicher J,Tygel M,Hubral P. Parabolic and hyperbolic paraxial two-point traveltimes in 3D media[J]. Geophysical Prospecting,1993,41(4) :495 -514
12 Tygel M,Schleicher J,Hubral P. A unified approach to 3-D seismic reflection imaging,PartⅡ:Theory[J]. Geophysics,1996,61(3). 759-775
13 Ursin B. Quadratic wavefront and traveltime approximation in inhomogeneous layered media with curved interfaces[J]. Geophysics, 1982, 47 ( 7 ): 1 012 -1 021
14 Thore P D,de Bazelaire E,Ray M P. Three parameter equation-. An efficient tool to enhance the stack[J]. Geophysics,1994,59(2):297-300
15 Hubral P,Schleicher J,Tygel M. A unified approach to 3-D seismic reflection imaging, PartⅠ: Basic concepts [J]. Geophysics, 1996,61(3) :742-758
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