--> Abstract: Abstract: Forward Modeling of Deepwater Outcrop Geobodies to Enhance Seismic Interpretation of Fluid and Lithology, by Kathleen Baker and Mike Batzle; #90066 (2007)
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Previous HitForwardNext Hit Previous HitModelingNext Hit of Deepwater Outcrop Geobodies to Enhance Previous HitSeismicNext Hit Interpretation of Fluid and Lithology

Kathleen Baker* and Mike Batzle
Colorado School of Mines, Golden, Colorado

There have been many studies of how Direct Hydrocarbon Indicators (DHIs) can help (or hurt) us when trying to distinguish fluid effects on Previous HitseismicNext Hit amplitudes. DHI’s have proven to be useful in identification of pore fluid types, but geologic complexities can impact the Previous HitseismicNext Hit signature in a way that may lead to misidentification of fluid indicators. Deep-water turbidite sequences have inter-fingered boundaries such as channel complexes, gradational contacts due to stratigraphic pinch outs, and abrupt changes in properties at scales well below Previous HitseismicNext Hit resolution. A better understanding of the lithologies and geometries that control fluid distribution can be achieved by using analog outcrop observations to enhance the interpretation of subsurface information such as well logs, Previous HitseismicNext Hit Previous HitdataNext Hit and regional geologic models. Here we present a case study of the Ursa field in the deep-water GOM and show how the integration of outcrop studies can enhance the interpretation of complex reservoirs in deep-water depositional settings. A methodology of the investigation is presented starting with linking the outcrop depositional system to the GOM depositional system, calibration and detailed analysis of GOM well log, rock and fluid properties to Previous HitseismicNext Hit Previous HitdataNext Hit. Previous HitForwardNext Hit and inverse Previous HitmodelingNext Hit, and analysis of the DHI response. Also, examples of outcrops and 1-D and 2-D models are presented. The results show that these deep-water outcrop analog help better predict frequency and occurrence of turbidite sequences when combined with well log and Previous HitseismicNext Hit and DHI’s. One key insight is the lithofacies impact on Previous HitseismicNext Hit Previous HitdataNext Hit may be an alternative explanation for the occurrence of high amplitude Previous HitseismicTop events, which may be misidentified as commercial hydrocarbon indicators.

 

AAPG Search and Discover Article #90066©2007 AAPG Hedberg Conference, The Hague, The Netherlands

 

AAPG Search and Discover Article #90066©2007 AAPG Hedberg Conference, The Hague, The Netherlands