Characteristic of gas hydrates reservoir from seismic analysis of multichannel seismic profiles offshore South Chile

I. Vargas Cordero, U. Tinivella, F. Accaino, M. F. Loreto, F. Fanucci, C. J. Reichert

Resultado de la investigación: Contribución a los tipos de informe/libroContribución a la conferenciarevisión exhaustiva

Resumen

We used a procedure already tested in order to characterize the gas hydrate and free gas reservoir along South Chile. We used the multichannel seismic data to obtain an accurate velocity model by using the Pre stack Depth Migration. The velocity model can be then extrapolated in terms of gas-phase concentrations. We recognized a high (2200 m/s) and low (1268 m/s) velocity layer associated to gas hydrate and free gas presence, respectively. The highest gas hydrates and free gas concentrations were detected offshore Coyhaique (at 44.5°S) with an average of 12% and 1% of total volume, respectively. By using the instantaneous amplitude, in particular using the BSR/seafloor ratio we conclude that the RC2901-728 section located northernmost (close to 36°S), also can be considered an interesting reservoir of gas hydrates and free gas because of the high estimated values of the BSR/seafloor ratio (>0.5).

Idioma originalInglés
Título de la publicación alojada71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
EditorialSociety of Petroleum Engineers
Páginas995-999
Número de páginas5
Volumen2
ISBN (versión impresa)9781615672363
EstadoPublicada - 2009
Evento71st European Association of Geoscientists and Engineers Conference and Exhibition 2009 - Amsterdam, Países Bajos
Duración: 8 jun 200911 jun 2009

Otros

Otros71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
PaísPaíses Bajos
CiudadAmsterdam
Período8/06/0911/06/09

Áreas temáticas de ASJC Scopus

  • Geoquímica y petrología
  • Ingeniería geotécnica y geológica
  • Geofísica

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