--> ABSTRACT: Rapid Structural Interpretation Utilizing Newly Developed Seismic Attributes: Interpretation Methodology and Workflows, by Lacazette, Alfred, Kurt J. Marfurt, Charles. H. Blumentritt, Isabel C. Serrano; #90026 (2004)
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Lacazette, Alfred1, Kurt J. Marfurt2, Charles. H. Blumentritt2, Isabel C. Serrano2 
(1) Consulting Geologist, Houston, TX 
(2) University of Houston, Houston, TX

ABSTRACT: Rapid Previous HitStructuralNext Hit Previous HitInterpretationNext Hit Utilizing Newly Developed Seismic Attributes: Previous HitInterpretationNext Hit Methodology and Workflows

New seismic attributes developed recently (some only weeks before this submission) at the University of Houston directly reveal geologic structure and sharply image subtle structures at and below the normal limits of seismic resolution. This presentation briefly describes many of the new attributes, shows how they are used to rapidly interpret geologic structure, and discusses workflows for rapid, multi-attribute based Previous HitstructuralNext Hit Previous HitinterpretationNext Hit. Numerous images and Previous HitstructuralNext Hit interpretations are provided using 3D data sets from the Permian and Ft. Worth basins in Texas. The attributes are based on a new method of vector dip computation by volumetric coherent energy correlation. Computed attributes include: Previous HitstructuralNext Hit dip, various types of curvature including Gaussian curvature, and curl. Amplitude gradients computed relative to the Previous HitstructuralNext Hit dip and in other orientations are another new attribute with application to both Previous HitstructuralNext Hit and subseismic fracture Previous HitinterpretationNext Hit. These attributes are used together with standard seismic data and attributes such as acoustic impedence. Multiple attributes can be combined to generate false-color volumes, maps, slices, and horizon images using methods similar to those applied to multichannel remote-sensing data. Such images directly reveal Previous HitstructuralNext Hit dip, dip changes, and curvature and sharply define Previous HitstructuralNext Hit dip-domains. Subtle faults and even joints not visible in standard seismic data are sharply imaged allowing the kind of deterministic brittle-fabric Previous HitinterpretationNext Hit normally done in outcrops, e.g. fault-slip sense determination from damage-zone features. Such direct Previous HitstructuralTop imaging permits short-cuts across traditional workflows and provides valuable constraints on horizon/stratigraphic interpretations and correlations.

 

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