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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: New AVO Classification to Develop High-Quality
Prospects in the Gulf Coast
By
eSeis, Inc.
A new classification for AVO (
amplitude
versus
offset
) is
proposed that considers all clastic reservoirs regardless of
the polarity of impedance contrast with the overlying shale or its
change with increasing
offset
. The new classification includes ten
classes of AVO types.
Examples from the Gulf Coast illustrate the application of this approach in exploration for pressured Wilcox objectives: typical, type II and less-common, type III AVO responses can be productive. Other examples include a classic “AVO-flip” where pressured, brine-filled sand has a negative AVO response and the gas-filled case has a positive AVO response.
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