摘要
本文提出了一种联合应用初至和浅层反射时间的可形变层析方法(以下称联合可形变层析反演方法),用于地震资料的静校正量计算。理论模型数据测试显示,与其他方法相比,该方法比初至可形变层析方法、网格层析方法求出的速度界面的精度更高;实际地震数据测试表明,与其他方法相比,联合可形变层析法反演可以获得更合理的近地表速度模型,据此进行静校正处理获得的叠加剖面的反射同相轴的连续性明显优于初至可形变层析方法以及其他两种商业软件。
We have developed a deformable-layer tomography method with the joint use of first breaks and shallow reflections (Joint DLT) to calculate static corrections. The method is tested with a synthetic model and a field dataset from Tarim Basin,Western China. The synthetic test shows that our joint DLT method can provide velocity interface geometries with high resolution. The field test result indicates that the method can yield a geologically reasonable near-surface velocity model,and an improved stack section in comparison with the sections from the DLT (using only first breaks) as well as two other kinds of commercial tomostatics software.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2010年第5期647-654,共8页
Oil Geophysical Prospecting
关键词
可形变层析
网格层析
静校正
deformable-layer tomography,cell-based tomography,static corrections
