3-D Interpretation Using Seismic Attributes and Forward Modeling: Case Study of a Deep-Water Channel System in the North Sea
Published:January 01, 1996
Catherine Lewis, Alan P. Laferriere, Jon R. Schwalbach, 1996. "3-D Interpretation Using Seismic Attributes and Forward Modeling: Case Study of a Deep-Water Channel System in the North Sea", Applications of 3-D Seismic Data to Exploration and Production, Paul Weimer, Thomas L. Davis
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For a stratigraphic sequence in the Tertiary section of the North Sea Central Graben, seismic attributes have enhanced the 3-D seismic interpretation by imaging a deep-water channel system. Although sands in the channels are seismically invisible, chalk debris flows within the channels appear as high-amplitude reflections, or “bright spots” in the attributes, that mark the axes of the system. Our interpretation of the depositional units initially suggested that the patchy but slightly dendritic pattern of bright spots was part of a distributary channel system. Forward modeling of the seismic attributes indicated that the bright spots do not indicate the presence of hydrocarbons and that individual oil sands cannot be located with the seismic data. Instead, the channels that are prone to sand are delineated by the chalk debris flows that are visible on the seismic attribute maps.
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Applications of 3-D Seismic Data to Exploration and Production
Thirty profusely illustrated case studies from around the world demonstrate the latest practical applications of 3-dimensional seismic data. This book covers fluvial-deltaic, eolian, deep-water clastic, carbonate, and structural reservoirs. Special emphasis is placed on the application of 3-D data to development drilling, reservoir characterization, and reservoir management. This atlas is designed to confirm 3-D seismic interpretation in drilling and production--for despite its great impact on the geosciences community, relatively few published case histories have documented 3-D's importance. This book fills that gap.