Data and preliminary results are presented from two vertical seismic profiles (VSPs) performed first in an open well and subsequently after the well was cased. Correlation between the VSPs and a seismic line recorded at a distance of 2 184 ft from the well are examined. Field results indicated that recorded waveforms were degraded in intervals of the well where cement bonding was poor, as might be expected. Analysis of the data revealed tube waves present in the cased-hole VSP.

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