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	Provedor de dados ArchiMer (1) Autor Cauquil, E (1) Colliat, J (1) Curinier, V (1) Marsset, Tania (1) Sultan, Nabil (1) Vernant, Antoine-mathieu (1) Voisset, Michel (1) Mais... Palavra-chave Effective medium theory (1) Free gas (1) Gas hydrate (1) Niger delta (1) Piezocone (1) Tipo do documento Text (1) Ano 2007 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Detection of free gas and gas hydrate based on 3D seismic data and cone penetration testing: An example from the Nigerian Continental Slope ArchiMer Sultan, Nabil; Voisset, Michel; Marsset, Tania; Vernant, Antoine-mathieu; Cauquil, E; Colliat, J; Curinier, V. We present a new method to characterize free gas, gas hydrates and carbonate concretions occurrence which are considered as high-risk factors for sub-sea developments in the Niger delta. This method is based on the combination of 3D seismic data to the geotechnical site characterizations using piezocone CPTU tests (Cone Penetration Test with additional measurement of the pore water pressure). A special processing of the 3D seismic data has enabled the determination of the interval compressional velocity. Using the effective-medium theory, velocity anomalies (negative and positive) within the first 15 m were translated in gas hydrate and free gas distribution. The calibration of the P wave velocity anomalies was done thanks to in-situ geotechnical testing... Tipo: Text Palavras-chave: Piezocone; Niger delta; Gas hydrate; Free gas; Effective medium theory. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2610.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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