The AVO technique has been successful in hydrocarbon exploration for gas-sand reservoirs such as those in the Texas Gulf Coast, the North Sea, and West Africa, but there are limited examples of successful AVO application in carbonate exploration.

Commonly in carbonate reservoirs, dolomitized zones have better reservoir quality than limestones. Because dolomite has a lower Poission's ratio than limestone, AVO might be able to detect dolomite trends. In this paper, we use AVO analysis to detect gas-producing dolomite in the nonproducing Black River limestone.

The available data are: (1) NMO-corrected CDP gathers for three 2D lines (lines 1, 2, and...

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