Editor's note: M. A. Gutierrez is now employed by Shell International Exploration and Production Inc., Houston, Texas, U.S.

Porosity and permeability heterogeneity prevents efficient drainage and sweep of hydrocarbons and results in low recovery efficiency. This heterogeneity is often linked to the facies architecture inherited from the original depositional system as well as to subsequent rock diagenesis. Undrained zones can be precisely targeted if a detailed description of reservoir bulk properties in 3-D is available. It is natural to derive such description from 3-D reflection seismology because of its superior ability to illuminate the subsurface.

3-D seismic data can be...

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