Abstract：Imaging velocity model-building is key technique of depth imaging in complex structures,which includes two aspects: imaging velocity analysis method and velocity model-building used for integrative analysis.The paper analyzed current major imaging velocity analysis methods and pointed out that study of imaging velocity analysis should develop toward the direction of a system.The system and practicality of imaging velocity model-building based on common focus point technique have been studied in the paper,the paper also presented two methods for realizing velocity analysis based on common-focus-point gathers according to the principle of equal travel-time and the thought of renewing operator:①interactive velocity analysis method based on spectrum analysis,which is mainly used to create primary imaging velocity model;②tomographic inversion,which is used for iteration and renewing of imaging velocity model.SeisVel velocity model-building software provided the integrated environment for these two methods.The synthetic data test showed that the thought of imaging velocity model-building based on common focus point technique presented in the paper is effective,the developed method and software basically can meet practical needs.
辛可锋, 王华忠, 马在田. 基于共聚焦点技术的成像速度建模方法研究[J]. 石油地球物理勘探, 2004, 39(5): 519-525.
Xin Ke-feng, Wang Hua-zhong, Ma Zai-tian. Imaging velocity model-building method based on common focus point technique. OGP, 2004, 39(5): 519-525.
