高分辨率地震资料处理中的优化速度分析方法

Optimal velocity analysis in high resolution seismic data processing

1. 中国石化胜利油田有限公司物探研究院,山东东营257022;2. 中国科学院地质与地球物理研究所,北京100101;3. 中国石化胜利油田有限公司胜利采油厂地质研究所,山东东营257001

Geophysical Research Institute, SINOPEC Shengli Oilfield Limited Company, Dongying 257022, China

速度分析的质量直接影响动静校正继而影响叠加成像以及偏移归位。针对如何优化速度分析, 提出了对道集资料噪音衰减, 道集内相位时差校正, 道集优化处理以及速度拾取应用约束等优化速度分析方法, 对参与速度分析的资料进行加工处理, 取得了很好的效果, 资料的品质得到了提高。

The quality of velocity analysis directly influences moveout and statics, even affects stack imaging and migration. The author proposed to optimize velocity analysis by implementing proper processing on data involved in velocity analysis. We implemented noise suppression on traces before they were selected to form gathers, performed phase correction and moveout correction on traces in gathers, and picked up velocities on optimized gathers under constraints. Desired results have been achieved. The quality of data was improved.