--> ABSTRACT: Integrating Detailed Stratigraphic Architecture with 3D Seismic for High-resolution Reservoir Modeling, by Zeng, Hongliu, Charles Kerans, Stephen Ruppel; #90026 (2004)
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Zeng, Hongliu1, Charles Kerans2, Stephen Ruppel2 
(1) Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin, Austin, TX 
(2) The University of Texas at Austin, Austin, TX

ABSTRACT: Integrating Detailed Stratigraphic Architecture with 3D Seismic for High-resolution Reservoir Previous HitModelingNext Hit

Generating high-resolution reservoir models from band-limited seismic Previous HitdataNext Hit is a major challenge. One solution is to utilize wireline logs to build a priori impedance models and conduct model-based seismic Previous HitinversionNext Hit for a broad-banded reservoir model. However, it is commonly difficult to map detailed stratigraphic architecture from low-resolution seismic Previous HitdataNext Hit. Without such information, Previous HitinversionNext Hit results are prone to be either low resolution or erroneous when depicting reservoir architecture. 
Progressive Previous HitinversionNext Hit helps solve these problems by allowing interpreters to build multiple initial models and to perform multiple inversions. The first initial model is a low-accuracy model based on a few prominent and reliable geologic boundaries and related seismic horizons. However, even this first Previous HitinversionNext Hit commonly reveals more geologic details than do original seismic Previous HitdataNext Hit. Additional horizons are then added from interpretation of the first Previous HitinversionNext Hit to create a new and more accurate initial model that better fits the geologic interpretation of core, well logs, and outcrop analogs. A new Previous HitinversionNext Hit will provide yet more geologic details and higher resolution. This process may be repeated until Previous HitinversionNext Hit resolution is satisfactory for reservoir-model-building applications. 
We present preliminary results on applying this methodology to a carbonate outcrop model and 3-D seismic Previous HitdataNext Hit sets in Cogdell and Fullerton fields, all in west Texas. These examples show that after several rounds of Previous HitinversionNext Hit, 20- to 40-ft-thick stratigraphic and reservoir units can be resolved. This is a significant improvement over the 100-ft resolution commonly obtained from seismic amplitude Previous HitdataTop.

 

AAPG Search and Discovery Article #90026©2004 AAPG Annual Meeting, Dallas, Texas, April 18-21, 2004.