Multi-component corridor stacks from vertical-vibrator near-offset 3C VSP data: Tenerife oilfield, Colombia

Summary Vertical Seismic Profile (VSP) surveys are generally acquired using three-component geophones. Significant shear energy both direct and reflected, is often observed on near-offset VSP data. In this study, we observe shear-waves on near-offset 3C VSP data. Anisotropic rotations are used to orient the horizontal components towards the fast and slow shear directions. The separated S1 and S2 wavefields are processed to generate PS1, PS2, S1S1, and S2S2 corridor stacks. Conventional PP corridor stacks are generated by processing the vertical component. The technique described here provides, in addition to the conventional PP, fast- and slow-shear time-depth relationships as well as multicomponent corridor stacks. Potentially, these outputs can be used to support surface-seismic, multi-component survey design as well as multi-component depth registration and well-tie analysis.