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<abstract>
<title>Well log analysis of elastic properties from the White Rose 
oilfield, offshore Newfoundland</title>
<author>Jessica Jaramillo Sarasty and Robert R. Stewart</author>
<p>This work conducts the analysis of six well logs (A-90, E-09, H-20,
J-49, L-08, and N- 22) from the White Rose field, offshore
Newfoundland. We used dipole sonic, density, gamma-ray, and
resistivity logs, for this analysis and plotted Vp and Vs versus
depth, Vp and Vs versus gamma-ray, Vp/Vs ratio versus depth, Vp/Vs
ratio versus gamma-ray, Vp real versus Vp predicted by Faust relation,
Vs real versus Vs predicted by Faust relation, Vs real versus Vs
predicted by Castagna relation, and finally density real versus
density predicted by Gardner relation. In general, Vp and Vs increase
with depth, with the exception of well A-90. Similarly, we observe a
decrease with depth of the Vp/Vs value in all the wells with the
exception of A-90, where we observe an increase of Vp/Vs ratio with
depth. In general, the Faust relation provides a good prediction for
Vp, with the Faust's constant of 125.3. Gardner's relation, had
difficulty predicting the density value in wells J-49, L-08, and N-22;
however, it worked relatively well in wells E-09 and H-20.  We applied
the Faust equation to predict the Vs from geological time and the
depth of burial of rock, the results were encouraging. The Castagna
relation predicted Vs from Vp quite well. Better fits can be achieve
by dividing the lithologies into regions (those above and below the
Wyandot Formation).
</p>
</abstract>
