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Attribute expression of fault-controlled karst; Fort Worth Basin, Texas; a tutorial

Jie Qi, Bo Zhang, Huailai Zhou and Kurt J. Marfurt
Attribute expression of fault-controlled karst; Fort Worth Basin, Texas; a tutorial (in Karst, Jason Rush (prefacer), Jerome A. Bellian (prefacer), Charlotte Sullivan (prefacer), Kurt J. Marfurt (prefacer) and Hongliu Zeng (prefacer))
Interpretation (Tulsa) (August 2014) 2 (3): SF91-SF110

Abstract

Much of seismic interpretation is based on pattern recognition, such that experienced interpreters are able to extract subtle geologic features that a new interpreter may easily overlook. Seismic pattern recognition is based on the identification of changes in (1) amplitude, (2) phase, (3) frequency, (4) dip, (5) continuity, and (6) reflector configuration. Seismic attributes, which providing quantitative measures that can be subsequently used in risk analysis and data mining, partially automate the pattern recognition problem by extracting key statistical, geometric, or kinematic components of the 3D seismic volume. Early attribute analysis began with recognition of bright spots and quickly moved into the mapping of folds, faults, and channels. Although a novice interpreter may quickly recognize faults and channels on attribute time slices, karst terrains provide more complex patterns. We sought to instruct the attribute expression of a karst terrain in the western part of the Fort Worth Basin, Texas, United States of America. Karst provides a specific expression on almost every attribute. Specifically, karst in the Fort Worth Basin Ellenburger Group exhibits strong dip, negative curvature, low coherence, and a shift to lower frequencies. Geomorphologically, the inferred karst geometries seen in our study areas indicate strong structural control, whereby large-scale karst collapse is associated with faults and where karst lineaments are aligned perpendicularly to faults associated with reflector rotation anomalies.


ISSN: 2324-8858
EISSN: 2324-8866
Serial Title: Interpretation (Tulsa)
Serial Volume: 2
Serial Issue: 3
Title: Attribute expression of fault-controlled karst; Fort Worth Basin, Texas; a tutorial
Title: Karst
Author(s): Qi, JieZhang, BoZhou, HuailaiMarfurt, Kurt J.
Author(s): Rush, Jasonprefacer
Author(s): Bellian, Jerome A.prefacer
Author(s): Sullivan, Charlotteprefacer
Author(s): Marfurt, Kurt J.prefacer
Author(s): Zeng, Hongliuprefacer
Affiliation: University of Oklahoma, ConocoPhillips School of Geology and Geophysics, Norman, OK, United States
Affiliation: Kansas Geological Survey, Lawrence, KS, United States
Pages: SF91-SF110
Published: 201408
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 37
Accession Number: 2015-007026
Categories: Structural geologyApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. block diags., chart, sects., sketch maps
N33°00'00" - N33°27'00", W97°54'00" - W97°24'00"
N33°00'00" - N33°25'00", W98°55'00" - W98°25'00"
N32°55'00" - N33°19'60", W97°19'60" - W96°49'60"
Secondary Affiliation: Whiting Petroleum Corporation, USA, United StatesPacific Northwest National Laboratory, USA, United StatesUniversity of Oklahoma, USA, United StatesBureau of Economic Geology, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201504
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