Challenge: Efficiently record high-quality
triaxial vertical seismic profile (VSP) data in both the open- and cased hole
sections of a well deviated up to 86°
Solution: Convey multilevel configuration of
VSI versatile seismic imagers by using the UltraTRAC all-terrain wireline
tractor to record a walkabove VSP survey that accounts for the geometry of the
deviated well
Results: Accurately tied the well to surface
seismic surveys and mapped faults and stratigraphic features on the basis of
the accurate time-depth data, corridor stack, and high-resolution VSP images
obtained efficiently and at lower risk with UltraTRAC tractor conveyance