%0 Journal Article
%T Caracterizaci車n de reservorios de hidrocarburos y acu赤feros fluviales: Problemas y Soluciones Characterization of fluvial hydrocarbon reservoirs and aquifers: problems and solutions
%A John S Bridge
%J Revista de la Asociaci車n Argentina de Sedimentolog赤a
%D 2001
%I 
%X Los dep車sitos fluviales son importantes reservorios de hidrocarburos y acu赤feros en muchas regiones del mundo. A fin de valorar, desarrollar y utilizar estos recursos es necesario determinar la geometr赤a tridimensional, la orientaci車n, la distribuci車n espacial y el volumen total de los reservorios y acu赤feros. Generalmente, este tipo de caracterizaci車n de reservorios y acu赤feros involucra, (1) el an芍lisis de perfiles de pozos, cuttings, testigos corona y datos s赤smicos, (2) la correlaci車n de estratos entre pozos, y (3) el modelado tridimensional de los dep車sitos entre los pozos. Estos procedimientos requieren una elaboraci車n del conocimiento geol車gico. Desafortunadamente, en muchos casos las propuestas actuales para la caracterizaci車n de los reservorios y acu赤feros son problem芍ticas. Las formas fluviales de depositaci車n (ejemplos: barras de canal, crevasse splays, deltas lacustres) son interpretadas com迆nmente a partir de perfiles de pozo y testigos corona, ya que se piensa que los Fluvial deposits are important hydrocarbon reservoirs and aquifers in many parts of the world. In order to assess, develop and manage these resources, it is necessary to determine the three-dimensional geometry, orientation, spatial distribution and total volume of the reservoirs/aquifers. Such characterization of reservoirs/aquifers normally involves (1) analysis of well logs, cuttings, cores and seismic data (2) correlation of strata between wells, and (3) modeling of the three-dimensional volume between wells. These procedures require a great deal of geological knowledge. Unfortunately, current approaches to reservoir/aquifer characterization are problematical in many cases. Specific fluvial depositional forms (e.g., channel bars, crevasse splays, lacustrine deltas) are commonly interpreted from well logs and cores, because it is thought that deposits associated with particular depositional forms will have particular geometries and reservoir quality. However, it is very difficult to unambiguously interpret fluvial depositional forms from such one-dimensional data, and it is questionable that a particular depositional form will have a distinctive stratal geometry. In particular, it is not possible to distinguish braided river deposits from meandering river deposits based on their vertical facies sequences. Also, it is a common myth that there is a relationship between channel-belt width/thickness, channel pattern, grain size of sediment load, and bank stability. However, with very careful analysis, the lateral extent of subsurface channel-belt deposits and overbank deposits
%K Reservorios y acu赤feros fluviales
%K Perfiles de pozo y testigos corona
%K Correlaci車n estratigr芍fica
%K Modelos de arquitectura aluvial 3-D
%K Fluvial reservoirs and aquifers
%K Well logs and cores
%K Stratigraphic correlation
%K 3-D alluvial architecture models
%U http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1853-63602001000200005