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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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).

Original languageEnglish
Title of host publication71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
Subtitle of host publicationBalancing Global Resources. Incorporating SPE EUROPEC 2009
PublisherSociety of Petroleum Engineers
Pages995-999
Number of pages5
ISBN (Print)9781615672363
Publication statusPublished - 2009
Event71st European Association of Geoscientists and Engineers Conference and Exhibition 2009 - Amsterdam, Netherlands
Duration: 8 Jun 200911 Jun 2009

Publication series

Name71st European Association of Geoscientists and Engineers Conference and Exhibition 2009: Balancing Global Resources. Incorporating SPE EUROPEC 2009
Volume2

Other

Other71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
Country/TerritoryNetherlands
CityAmsterdam
Period8/06/0911/06/09

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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