Generating a relative geologic time volume by 3D graph-cut phase unwrapping method with horizon and unconformity constraints

Generating a relative geologic time volume by 3D graph-cut phase unwrapping method with horizon and unconformity constraints
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通过具有层位和不整合面约束的 3D 图割相位展开方法生成相对地质时间体积

DOI:
10.1190/geo2011-0351.1
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发表时间:
2012-06
期刊:
影响因子:
3.3
通讯作者:
Zhong Guangfa
Zhong Guangfa
中科院分区:
地球科学2区
文献类型:
--
作者:
Wu Xinming;Zhong Guangfa

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摘要相对地质时(RGT)体的建立是地震地貌学和沉积学解释的重要内容。地震瞬时相位展开提供了一种生成RGT体的极好方法。虽然已经发表了几个二维或三维地震相位解缠结果,但显然需要讨论地震相位解缠的具体方法。本文提出了一种图割相位展开方法,该方法在干涉合成孔径雷达图像处理中有较好的效果。它具有保持间断性能力强、计算效率高等优点。为了使其适用于三维地震相位解包裹,将其从二维扩展到三维,并引入了地震层位和不整合面约束。该方法引入了自动跟踪方法易于跟踪的连续强共形同相轴作为层位约束,用于指导相位展开,以保证相位展开的连续性。
ABSTRACTConstruction of a relative geologic time (RGT) volume is vital to seismic geomorphological and sedimentological interpretation. Seismic instantaneous phase unwrapping provides an excellent approach for generating an RGT volume. Although several 2D or 3D seismic phase unwrapping results have been published, there is a clear need for discussions on concrete methods for seismic phase unwrapping. We have developed the graph-cut phase unwrapping method, which performs well in the interferometric synthetic aperture radar image processing. It has advantages of strong discontinuity-preserving ability and high computing efficiency. To make it suitable for 3D seismic phase unwrapping, the method is improved by extending it from 2D to 3D, and by introducing the seismic horizon and unconformity constraints. The strong and continuous conformable seismic events, which can be easily tracked by certain autopicking methods, are introduced as horizon constraints for guiding the phase unwrapping to ensure a constant...
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