Efecto de la diagénesis sobre las propiedades físicas del almacén de petróleo de la Formación Napo del Cretácico Inferior de la Cuenca Oriente, Ecuador

Impacto

Downloads

Downloads per month over past year



Estupiñán Letamendi, Jenny and Marfil, Rafaela (2004) Efecto de la diagénesis sobre las propiedades físicas del almacén de petróleo de la Formación Napo del Cretácico Inferior de la Cuenca Oriente, Ecuador. Geotemas, 6 (1). pp. 293-295. ISSN 1576-5172

[thumbnail of Páginas desdeGeo_temas_6_1sge-14.pdf]
Preview
PDF
518kB

Official URL: http://www.sociedadgeologica.es/publicaciones_geotemas_realizadas.html



Abstract

The Napo Formation of the Cenomaniense age is an importan reservoir-sandstone in the Oriente basin of Ecuador. It displays higher porosity values (average 2 1%) compared to other reservoir in the region. The sandstone are fine to coarse grained and moderately to well sorted quartz arenites (average Qt932 F6.1 L0.7). Quartz cement is the dominant porosity reducing agent in this reservoir but o ther factors such as the glaucon ite, other clay in traclastos, grain-coating chlorite, pyrite, early siderite, mesodiagenetic Fedolomite-ankerite, kaolin, and pyrrhotite also playa critical role. Intergranular volume IGV vs cement percentage, indicates that cementation is the predominant contributor to porosity loss in all the reservoir. Some intervals shows secondary porosity but it is of minore effect on the enhancement of porosity.


Item Type:Article
Uncontrolled Keywords:Reservoir sandstone, diagenesis, cementation, Lower Creta ceous, Ecuador
Subjects:Sciences > Geology > Petrology
ID Code:60656
Deposited On:26 May 2020 10:44
Last Modified:26 May 2020 10:44

Origin of downloads

Repository Staff Only: item control page