地震叠前数据三维可视化技术探讨
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摘要
随着地震处理技术和解释技术的发展,三维可视化技术在地震勘探中的应用领域不断扩大,在地震处理和叠前分析环节,也可以利用三维可视化技术进行质量监控和叠前道集的分析,以提高地震处理的质量,增加利用叠前资料进行各向异性分析的技术手段。根据地震叠前海量数据的特点,采用层次细节模型进行数据分块处理与组织管理,以满足地震叠前数据三维可视化实时显示的要求;采用三维场景对象管理机制,完成海量地震叠前数据的三维显示。就层次细节模型的数据组织和三维场景对象管理的相关技术进行了讨论,并就地震叠前数据与虚拟三维空间的关系进行了阐述;给出了地震道集数据的三维显示实例,三维可视化在速度分析、共偏移距和共方位角数据分析中的应用实例。
3-D visualization techniques have been widely used in seismic data processing and interpretation. In seismic processing and prestack analysis, 3-D visualization techniques can be adopted to accomplish quality control and anisotropical analysis on prestack data. Considering the massive volume of prestack gathers, data bricking and management based on level of detail (LOD) model have been used to render prestack data in 3-D space to meet the demands of real-time display of 3-D data volume. The mechanism of object management in 3-D scene has been utilized for the visualization of massive 3-D seismic prestack data. In this paper, we discussed techniques for the data organization and management of LOD models as well as the management of 3-D scene objects. Applications of 3-D visualization were also presented in displaying of prestack gathers, velocity analysis, and analysis of common offset and common azimuth data.
3-D visualization techniques have been widely used in seismic data processing and interpretation. In seismic processing and prestack analysis, 3-D visualization techniques can be adopted to accomplish quality control and anisotropical analysis on prestack data. Considering the massive volume of prestack gathers, data bricking and management based on level of detail (LOD) model have been used to render prestack data in 3-D space to meet the demands of real-time display of 3-D data volume. The mechanism of object management in 3-D scene has been utilized for the visualization of massive 3-D seismic prestack data. In this paper, we discussed techniques for the data organization and management of LOD models as well as the management of 3-D scene objects. Applications of 3-D visualization were also presented in displaying of prestack gathers, velocity analysis, and analysis of common offset and common azimuth data.
引文
1魏嘉.地质建模技术[J].勘探地球物理进展,2007,30(1):1~6
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7Chambers H,Brown A L.3-D visualization continues to advance integrated interpretation environment[J].First Break,2003,21(5):31~34
8Canning A,Litvin A,Eastwood L.3-D visualization of AVO anomalies[J].First Break,2000,18(4):138~140
9杨强,魏嘉,段文超.基于三维可视化技术的地震多属性分析的实现[J].勘探地球物理进展,2007,30(1):64~68
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12Cheadle S,Miao X,Gray D,et al.Mapping azi muthal variations in amplitude and velocity in wide patch land3D data[EB/OL].2008-09-10].http://marine.veritas-dgc.com/WebSite/VTechDoc Web.nsf/all/10DBE8345C353B7487256CA500420EA1/MYMFile/0021.pdf
13Hodgson P,Cunnell C,Krueger A,et al.Cluster visual-ization rises to the seismic processing challenge[J].First Break,2005,23(3):33~35
14Gray G.Observations of azi muthal anisotropy in pres-tack seismic data:Expanded Abstracts of CSPG&CSEG Convention[C].[S.l.]:[s.n.],2007.373~377
15Molnar S,Cox M,Ellsworth D,et al.Asorting classifi-cation of parallel rendering[J].IEEE Computer Graph-ics and Applications,1994,14(4):23~32
16Varadhan G,Manocha D.Out-of-core rendering of mas-sive geometric environments:Proceedings of IEEE Vi-sualization[C].Boston:[s.n.],2002.69~76
17Guthe S,Wand M,Gonser J,et al.Interactive render-ing of large volume data sets:Proceedings of IEEE Vi-sualization[C].Boston:[s.n.],2002.53~60
18Lindstrom P,Koller D,Ribarsky W,et al.Real-ti me:Continuous level of detail rendering of height fields:Proceedings of the SIGGRAPH[C].New Orleans:Ad-dison Wesley Professional,1996.109~118
19Seo H,Thal mann A F.LOD management on ani mating face models:Proceedings of the IEEE Virtual Reality[C].New Brunswick:[s.n.],2000.161~168
20Decoro C,Pajarola R.XFast Mesh:Fast view-dependent meshing from external memory:Proceedings of IEEE Visualization[C].Boston:[s.n.],2002.363~370
21赵改善.我们需要多大和多快的计算机[J].勘探地球物理进展,2004,27(1):22~28
22魏嘉,唐杰,武港山,等.三维地质构造建模技术研究[J].石油物探,2008,47(4):319~327
2Levoy M.Efficient ray tracing of volume data[J].ACM Transactions on Graphics,1990,9(3):245~261
3Seron F J.Visualization and finite element techniques for seismic interpretation[J].Computer&Graphics,1992,16(4):383~394
4Slatt R M,Thomasson M R,Romig P R,et al.Visual-ization technology for the oil and gas industry:Today and tomorrow[J].AAPG Bulletin,1996,80(4):453~459
5Sheffield T M,Meyer D,Lees J,et al.Geovolume visu-alizationinterpretation:Color in3D volumes[J].The Leading Edge,1999,18(6):668~674
6Kidd G D.Fundamentals of3D seismic volume visual-ization[J].The Leading Edge,1999,18(6):702~709
7Chambers H,Brown A L.3-D visualization continues to advance integrated interpretation environment[J].First Break,2003,21(5):31~34
8Canning A,Litvin A,Eastwood L.3-D visualization of AVO anomalies[J].First Break,2000,18(4):138~140
9杨强,魏嘉,段文超.基于三维可视化技术的地震多属性分析的实现[J].勘探地球物理进展,2007,30(1):64~68
10Castanie L,Bosquet F,Levy B.Advances in seismic in-terpretation using new volume visualization techniques[J].First Break,2005,23(10):69~72
11Mahe I.Solving a probleminvolving geobody extraction[J].The Leading Edge,2007,26(1):22~23
12Cheadle S,Miao X,Gray D,et al.Mapping azi muthal variations in amplitude and velocity in wide patch land3D data[EB/OL].2008-09-10].http://marine.veritas-dgc.com/WebSite/VTechDoc Web.nsf/all/10DBE8345C353B7487256CA500420EA1/MYMFile/0021.pdf
13Hodgson P,Cunnell C,Krueger A,et al.Cluster visual-ization rises to the seismic processing challenge[J].First Break,2005,23(3):33~35
14Gray G.Observations of azi muthal anisotropy in pres-tack seismic data:Expanded Abstracts of CSPG&CSEG Convention[C].[S.l.]:[s.n.],2007.373~377
15Molnar S,Cox M,Ellsworth D,et al.Asorting classifi-cation of parallel rendering[J].IEEE Computer Graph-ics and Applications,1994,14(4):23~32
16Varadhan G,Manocha D.Out-of-core rendering of mas-sive geometric environments:Proceedings of IEEE Vi-sualization[C].Boston:[s.n.],2002.69~76
17Guthe S,Wand M,Gonser J,et al.Interactive render-ing of large volume data sets:Proceedings of IEEE Vi-sualization[C].Boston:[s.n.],2002.53~60
18Lindstrom P,Koller D,Ribarsky W,et al.Real-ti me:Continuous level of detail rendering of height fields:Proceedings of the SIGGRAPH[C].New Orleans:Ad-dison Wesley Professional,1996.109~118
19Seo H,Thal mann A F.LOD management on ani mating face models:Proceedings of the IEEE Virtual Reality[C].New Brunswick:[s.n.],2000.161~168
20Decoro C,Pajarola R.XFast Mesh:Fast view-dependent meshing from external memory:Proceedings of IEEE Visualization[C].Boston:[s.n.],2002.363~370
21赵改善.我们需要多大和多快的计算机[J].勘探地球物理进展,2004,27(1):22~28
22魏嘉,唐杰,武港山,等.三维地质构造建模技术研究[J].石油物探,2008,47(4):319~327
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