Seismic spectral monitoring of CO2 in a geological reservoir

Peak frequency is a spectral seismic attribute widely used for reservoir thickness estimation and hydrocarbon detection. In this work we apply this attribute in the context of the geological storage of carbon dioxide (CO2) and analyze its reliability as a thickness estimator for the gas accumulation...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Gómez, Julián Luis, Ravazzoli, Claudia Leonor
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Geofísica
Two-phase flow
Spectral attributes
Seismic reflectivity
CO2
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/100175
https://ri.conicet.gov.ar/11336/23519
http://www.cimec.org.ar/ojs/index.php/mc/article/view/4415
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-100175
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geofísica
Two-phase flow
Spectral attributes
Seismic reflectivity
CO2
spellingShingle Geofísica
Two-phase flow
Spectral attributes
Seismic reflectivity
CO2
Gómez, Julián Luis
Ravazzoli, Claudia Leonor
Seismic spectral monitoring of CO2 in a geological reservoir
topic_facet Geofísica
Two-phase flow
Spectral attributes
Seismic reflectivity
CO2
description Peak frequency is a spectral seismic attribute widely used for reservoir thickness estimation and hydrocarbon detection. In this work we apply this attribute in the context of the geological storage of carbon dioxide (CO2) and analyze its reliability as a thickness estimator for the gas accumulation. To model the vertical distribution of CO2, we solve the Buckley-Leverett equation with discontinuous flux function. A matrix reflectivity algorithm then computes, in the frequency domain, the seismic reflectivity. We find that the peak frequency variability due to CO2 saturation does not alter significantly its correlation with the accumulation thickness. We then extend the applicability of the spectral attribute by examining its time-lapse response to the evolution of the injected CO2 volume within a reservoir. We find that a description of the CO2-brine contact as well as the evaluation of the reservoir’s caprock sealing capacity can be obtained from this implementation. Peak-frequency time-lapse signatures when the CO2 forms an up-going front, evolves into a growing accumulation and leaks into the caprock are identified.
format Articulo
Articulo
author Gómez, Julián Luis
Ravazzoli, Claudia Leonor
author_facet Gómez, Julián Luis
Ravazzoli, Claudia Leonor
author_sort Gómez, Julián Luis
title Seismic spectral monitoring of CO2 in a geological reservoir
title_short Seismic spectral monitoring of CO2 in a geological reservoir
title_full Seismic spectral monitoring of CO2 in a geological reservoir
title_fullStr Seismic spectral monitoring of CO2 in a geological reservoir
title_full_unstemmed Seismic spectral monitoring of CO2 in a geological reservoir
title_sort seismic spectral monitoring of co2 in a geological reservoir
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/100175
https://ri.conicet.gov.ar/11336/23519
http://www.cimec.org.ar/ojs/index.php/mc/article/view/4415
work_keys_str_mv AT gomezjulianluis seismicspectralmonitoringofco2inageologicalreservoir
AT ravazzoliclaudialeonor seismicspectralmonitoringofco2inageologicalreservoir
bdutipo_str Repositorios
_version_ 1764820439989747714

Ejemplares similares