VSP

VSP can handle the zero-offset and offset VSP surveys. It uses the F-K or median filter to separate upgoing and downgoing waves, and then deconvolves the upgoing waves by applying a wavelet designed on the downgoing waves. Finally, it builds a corridor stack, or VSP-CDP mapping

Features

• Support zero-offfset and offset VSP survey
• Interactively pick first breaks with a trace magnifier
• Static time shift
• Calculate interval velocity and average velocity
• Separate upgoing and downgoing waves with F-K filter and median filter
• Deconvolve upgoing waves by applying wavelet designed on downgoing waves
• Display and output upgoing and downgoing waves in two-way traveltimenew
• Corridor mute
• Corridor stack
• VSP-CDP transform

• Butterworth and Ormsby filters with band pass, low pass, high pass, band reject, and notch options
• Automatic gain control (AGC), trace balance, time variant scaling, and single trace scaling
• Undo and redo multi-step processing on seismic data