混合层析成像技术在复杂构造建模中的应用

Application of mixed Tomography Technology in complex structure Modeling

叠前深度偏移技术是解决复杂构造和横向速度变化剧烈等复杂地区地震资料成像问题最有效的手段,而速度模型的精度直接影响复杂构造的成像品质,是复杂构造成像的核心。通过在实际地震资料处理中的应用,开展复杂构造区速度模型建立及优化处理技术研究,利用基于层位的层析成像、基于网格的层析成像的技术特点,将混合层析成像技术应用其中。应用结果表明,该技术可以提高速度模型精度,改善复杂构造区地震资料成像效果,验证了混合层析成像技术在复杂构造区叠前深度偏移中的有效性和实用性。

Prestack depth migration is one of the most effective means to solve the problems of complex structure and high lateral velocity variation,and the accuracy of velocity model directly affects the imaging quality of complex structure,which is the core of complex structure imaging.through the application of the actual seismic data processing,the establishment of the velocity model of the complex structure area and the optimization and processing technology research are carried out,and the hybrid tomography technology is applied to the application of the hybrid tomography technology by utilizing the technical characteristics of the horizonbased tomography,the grid-based tomography,and the application result shows that,The method can improve the accuracy of the speed model,improve the imaging effect of the seismic data in the complex structure area,and verify the effectiveness and the practicability of the hybrid tomography technology in the pre-stack depth migration of the complex structure area.