Integrated Velocity Model Building Based on Floating Topography in Foothill Area:

1）Integrated Velocity Model Building and Depth Migration Techniques Based on Floating Datum

- First arrival tomography with multi-information constraint

- Noise attenuation in multi-domains

- Double square root NMO

- Floating Datum Velocity Analysis

- Complex velocity analysis in shallow washed-out area

2）Geological Steering Velocity Model Building in Depth Domain

- Make the full use of outcrops, well logs, VSP and structure models to constrain the velocity model

precision and reduce the multiplicity of velocity model building

- Improve the imaging precisions with data-driven and the fine geological interpretation