Evaluation of thickness estimation techniques in seismically thin beds

The quantitative estimation of rock strata thickness below the vertical seismic resolution limit is a great challenge for seismic exploration. Most previous studies are focused on thin layers interspersed within an infinite homogeneous rock which does not exhibit interference effects due to the pres...

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Autores principales:	Ortiz Bustos,Valentina, Abarca-del-Río,Rodrigo, Belmonte-Pool,Arturo, Miller,Matthew
Lenguaje:	English
Publicado:	Universidad Católica de la Santísima Concepción 2020
Materias:	seismic thickness tuning thin beds peak instantaneous frecuency peak spectral frecuency spectral decomposition
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132020000200006
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spelling	oai:scielo:S0718-281320200002000062021-01-16Evaluation of thickness estimation techniques in seismically thin bedsOrtiz Bustos,ValentinaAbarca-del-Río,RodrigoBelmonte-Pool,ArturoMiller,Matthew seismic thickness tuning thin beds peak instantaneous frecuency peak spectral frecuency spectral decomposition The quantitative estimation of rock strata thickness below the vertical seismic resolution limit is a great challenge for seismic exploration. Most previous studies are focused on thin layers interspersed within an infinite homogeneous rock which does not exhibit interference effects due to the presence of other rock strata. These cases are not representative of most real-life situations, so their results cannot be considered to be general. In this paper we experimentally evaluate the use of the peak instantaneous frequency, dominant frequency, and spectral decomposition attributes in the quantification of thin layers by using two simple isolated-layer wedge models and a third multilayer wedge model which simulates a stratified formation. We conclude that, in the presence of interference, only spectral decomposition would allow us to estimate the thickness of a thin layer, and even the thicker ones. However, its relationship with layer thickness is inverted when varying the elastic properties of the formation under evaluation, so this attribute should only be used in rock strata whose elastic properties remain approximately constant.info:eu-repo/semantics/openAccessUniversidad Católica de la Santísima ConcepciónObras y proyectos n.28 20202020-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132020000200006en10.4067/S0718-28132020000200006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	seismic thickness tuning thin beds peak instantaneous frecuency peak spectral frecuency spectral decomposition
spellingShingle	seismic thickness tuning thin beds peak instantaneous frecuency peak spectral frecuency spectral decomposition Ortiz Bustos,Valentina Abarca-del-Río,Rodrigo Belmonte-Pool,Arturo Miller,Matthew Evaluation of thickness estimation techniques in seismically thin beds
description	The quantitative estimation of rock strata thickness below the vertical seismic resolution limit is a great challenge for seismic exploration. Most previous studies are focused on thin layers interspersed within an infinite homogeneous rock which does not exhibit interference effects due to the presence of other rock strata. These cases are not representative of most real-life situations, so their results cannot be considered to be general. In this paper we experimentally evaluate the use of the peak instantaneous frequency, dominant frequency, and spectral decomposition attributes in the quantification of thin layers by using two simple isolated-layer wedge models and a third multilayer wedge model which simulates a stratified formation. We conclude that, in the presence of interference, only spectral decomposition would allow us to estimate the thickness of a thin layer, and even the thicker ones. However, its relationship with layer thickness is inverted when varying the elastic properties of the formation under evaluation, so this attribute should only be used in rock strata whose elastic properties remain approximately constant.
author	Ortiz Bustos,Valentina Abarca-del-Río,Rodrigo Belmonte-Pool,Arturo Miller,Matthew
author_facet	Ortiz Bustos,Valentina Abarca-del-Río,Rodrigo Belmonte-Pool,Arturo Miller,Matthew
author_sort	Ortiz Bustos,Valentina
title	Evaluation of thickness estimation techniques in seismically thin beds
title_short	Evaluation of thickness estimation techniques in seismically thin beds
title_full	Evaluation of thickness estimation techniques in seismically thin beds
title_fullStr	Evaluation of thickness estimation techniques in seismically thin beds
title_full_unstemmed	Evaluation of thickness estimation techniques in seismically thin beds
title_sort	evaluation of thickness estimation techniques in seismically thin beds
publisher	Universidad Católica de la Santísima Concepción
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132020000200006
work_keys_str_mv	AT ortizbustosvalentina evaluationofthicknessestimationtechniquesinseismicallythinbeds AT abarcadelriorodrigo evaluationofthicknessestimationtechniquesinseismicallythinbeds AT belmontepoolarturo evaluationofthicknessestimationtechniquesinseismicallythinbeds AT millermatthew evaluationofthicknessestimationtechniquesinseismicallythinbeds
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Evaluation of thickness estimation techniques in seismically thin beds

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