Analysis of the seismic coherence attribute with respect to subsurface fault geometry
thesis The objective of this study was to analyze the behavior of the seismic coherence attribute, particularly its relationship to subsurface fault geometry. Using data from the seismic survey of the Kuparuk River Field of the North Slope of Alaska as well as model data, a Monte Carlo method was ap...
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ftunivutah:oai:collections.lib.utah.edu:ir_etd/193793 2023-05-15T17:40:15+02:00 Analysis of the seismic coherence attribute with respect to subsurface fault geometry MS Mironova, Anastasia College of Mines & Earth Sciences Geology & Geophysics University of Utah 2009-01-06 application/pdf 30,695,059 bytes https://collections.lib.utah.edu/ark:/87278/s62238dn eng eng University of Utah Digital reproduction of "Analysis of the seismic coherence attribute with respect to subsurface fault geometry" J. Willard Marriott Library Special Collections QE3.5 2009 .M57 us-etd2,108216 https://collections.lib.utah.edu/ark:/87278/s62238dn ©Anastasia Mironova Original: University of Utah J. Willard Marriott Library Special Collections Kuparuk River Field Fault intersections Text 2009 ftunivutah 2021-06-03T18:21:32Z thesis The objective of this study was to analyze the behavior of the seismic coherence attribute, particularly its relationship to subsurface fault geometry. Using data from the seismic survey of the Kuparuk River Field of the North Slope of Alaska as well as model data, a Monte Carlo method was applied to test the sensitivity of the coherence attribute in both settings. In the model setting the study tested coherence response to single faults, fault intersections, and master-minor fault geometries. The number of statistical experiments conducted for the Monte Carlo technique was restricted due to significant College of Engineering; times required to generate coherence volumes. The study concluded that the coherence attribute responds differently to different fault geometries. The ability of this attribute to resolve fault geometry depends on the selection of input parameters within the software suite used to compute it and on the frequency of sampling performed on the resulting coherence volumes. It was confirmed that the coherence attribute is affected significantly by the choice of migration methodology. Random noise of up to 50% of the absolute value of the maximum amplitude, on the other hand, has a negligible effect on how faults are imaged with the coherence attribute. Analyzing a composite result of several statistical coherence extractions is an improvement over mapping a single coherence volume on an interpreted fault surface. This study related a geophysical attribute to a geologic property, a relationship that can be used for detailed interpretations of fault geometry from coherence attribute volumes in the future. Text north slope Alaska The University of Utah: J. Willard Marriott Digital Library |
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The University of Utah: J. Willard Marriott Digital Library |
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Kuparuk River Field Fault intersections |
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Kuparuk River Field Fault intersections Mironova, Anastasia Analysis of the seismic coherence attribute with respect to subsurface fault geometry |
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Kuparuk River Field Fault intersections |
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thesis The objective of this study was to analyze the behavior of the seismic coherence attribute, particularly its relationship to subsurface fault geometry. Using data from the seismic survey of the Kuparuk River Field of the North Slope of Alaska as well as model data, a Monte Carlo method was applied to test the sensitivity of the coherence attribute in both settings. In the model setting the study tested coherence response to single faults, fault intersections, and master-minor fault geometries. The number of statistical experiments conducted for the Monte Carlo technique was restricted due to significant College of Engineering; times required to generate coherence volumes. The study concluded that the coherence attribute responds differently to different fault geometries. The ability of this attribute to resolve fault geometry depends on the selection of input parameters within the software suite used to compute it and on the frequency of sampling performed on the resulting coherence volumes. It was confirmed that the coherence attribute is affected significantly by the choice of migration methodology. Random noise of up to 50% of the absolute value of the maximum amplitude, on the other hand, has a negligible effect on how faults are imaged with the coherence attribute. Analyzing a composite result of several statistical coherence extractions is an improvement over mapping a single coherence volume on an interpreted fault surface. This study related a geophysical attribute to a geologic property, a relationship that can be used for detailed interpretations of fault geometry from coherence attribute volumes in the future. |
author2 |
College of Mines & Earth Sciences Geology & Geophysics University of Utah |
format |
Text |
author |
Mironova, Anastasia |
author_facet |
Mironova, Anastasia |
author_sort |
Mironova, Anastasia |
title |
Analysis of the seismic coherence attribute with respect to subsurface fault geometry |
title_short |
Analysis of the seismic coherence attribute with respect to subsurface fault geometry |
title_full |
Analysis of the seismic coherence attribute with respect to subsurface fault geometry |
title_fullStr |
Analysis of the seismic coherence attribute with respect to subsurface fault geometry |
title_full_unstemmed |
Analysis of the seismic coherence attribute with respect to subsurface fault geometry |
title_sort |
analysis of the seismic coherence attribute with respect to subsurface fault geometry |
publisher |
University of Utah |
publishDate |
2009 |
url |
https://collections.lib.utah.edu/ark:/87278/s62238dn |
genre |
north slope Alaska |
genre_facet |
north slope Alaska |
op_source |
Original: University of Utah J. Willard Marriott Library Special Collections |
op_relation |
Digital reproduction of "Analysis of the seismic coherence attribute with respect to subsurface fault geometry" J. Willard Marriott Library Special Collections QE3.5 2009 .M57 us-etd2,108216 https://collections.lib.utah.edu/ark:/87278/s62238dn |
op_rights |
©Anastasia Mironova |
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1766141140050903040 |