地震叠前数据三维可视化技术探讨  

On 3-D visualization of prestack seismic data

作　　者：魏嘉[1] 唐杰[2] 武港山[2] 岳承祺[1] 张扬[1] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院南京石油物探研究所,江苏南京210014 [2]南京大学计算机科学系,江苏南京210093

出　　处：《勘探地球物理进展》2009年第1期12-17,22,共7页Progress in Exploration Geophysics

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.

关 键 词：叠前道集 三维可视化 层次细节模型 数据分块 三维场景 虚拟三维空间 

分 类 号：P631.4[天文地球—地质矿产勘探]