Carbonate Reservoir Characterization Using 3-D Seismic Attributes And Avo: Example From Campos Basin, Brazil

The Congro Field is located in Campos Basin, Brazil, approximately 90 Km away from the coast in a<br>water depth ranging from 200m to 600m. The main reservoir is composed of fine-grained low permeability Albian<br>limestones with good hydrocarbon reserves. The vertical wells drilled in this field were considered noneconomic<br>due to the low hydrocarbon productivity of the carbonate reservoirs. An area of the field was tested<br>by a horizontal well in 1996 and presented high productivity. Then, it was conducted a detailed revaluation study<br>involving multidisciplinary efforts (geophysics, geology and reservoir engineering) to obtain a better<br>understanding of the reservoir characteristics and to improve the economicity of the field. The present work<br>shows the results of the geophysical and geological reservoir interpretation using Congro 3D seismic data.