石油物探2025，Vol.64Issue(3)：467-481,15.DOI:10.12431/issn.1000-1441.2024.0059
基于快速成像的观测系统评价方法及应用
A fast imaging-based geometry evaluation method and its application
王昀 1孙敏傲 1陈浩 1王雅如 1肖云飞 1向晨 1严泽宇 1刘文龙2
作者信息
- 1. 中石化石油物探技术研究院有限公司,江苏 南京 211103
- 2. 东营同邦石油科技有限公司,山东 东营 257000
- 折叠
摘要
Abstract
The conventional method of migration-based geometry design is accurate and illustrative for target analysis.However,routine migration cannot be accomplished without high-performance computers and a lot of computation time for wavefield modeling.To improve the time-efficiency and accuracy of assessing seismic geometry design,particularly for a survey with complicated surface and subsurface conditions,we develop a seismic geometry evaluation method based on fast migration.This method involves point spread function computation and convolution in a higher-dimensional space.Specifically,the Hessian approximate operator is derived quickly from a preset model and a recording geometry,and then convolves with the reflectivities of the model(indicating the information of large wave numbers)in a higher-dimensional space,for subsurface imaging with high efficiency.Moreover,the imaging effects at varying folds,bin sizes,aspect ratios and trace densities are comparatively analyzed.The proposed method has been successfully applied to the geometry evaluation in southwest surveys with steeply dipping structures,northwest surveys with fractured-vuggy reservoirs,and the South China Sea with complex fault blocks.关键词
深度域偏移成像/观测系统设计/快速偏移成像/正演模拟/点扩散函数Key words
depth-domain migration/geometry design/fast migration/forward modeling/point spread function分类
石油、天然气工程引用本文复制引用
王昀,孙敏傲,陈浩,王雅如,肖云飞,向晨,严泽宇,刘文龙..基于快速成像的观测系统评价方法及应用[J].石油物探,2025,64(3):467-481,15.
