f Uniwell Borehole Seismic Data on Tube Wave Noise Abatement

The sensitivity to oil-water fluid-substitution events of Uniwell sourcing and sensing seismic waves in the same borehole is degraded by tubewave noise generated by the source. To assess some abatement measures, a ten-level clamped vector-motion sensor string was ganged with a high-frequency or a low-frequency seismic source to record data on tubewave noise levels.