Results 41 to 50 of about 7,350 (205)

Estudio al M.E.B.de las texturas superficiales de los granos de cuarzo y su aplicación a la interpretación de medios actuales y subactuales

open access: yesEstudios Geologicos, 1984
Se han estudiado muestras representativas de distintos ambientes sedimentarios (marino, eólico, fluvial), tanto en medios actuales como en subactuales y fósiles (Plio-Cuaternarios y Cuaternarios) conocidos previamente mediante otros métodos, con el fin ...
L. Torcal Sáinz   +2 more
doaj   +1 more source

Quantitative simulation of the densification process of sandstone reservoir in the Xu 3 Member of Xujiahe Formation in western Sichuan Depression, Sichuan Basin

open access: yes地质科技通报, 2023
In order to clarify the densification process and quantitatively restore the porosity evolution of the Xu 3 Member sandstone reservoir in western Sichuan Depression, the diagenesis of the Xu 3 Member was system atically analyzed using thin sections ...
Yu Chang   +10 more
doaj   +1 more source

Numerical investigation of the correlations of hydraulic and elastic characteristics in diverse carbonate rock types

open access: yesDeep Underground Science and Engineering, EarlyView.
We use the linear Boolean model and the discrete Fourier transformation approach to generate various carbonate rocks. The lattice Boltzmann method and the finite element method are applied to calculate permeability and elastic wave velocity, respectively.
Yutian Zhang   +7 more
wiley   +1 more source

Cementación temprana por calcita en un frente deltaico de escala métrica: cambios en la calidad del reservorio

open access: yesGeogaceta
La arenisca de Roda se corresponde con un delta del Eoceno inferior situado en el margen norte de la cuenca de Graus-Tremp en el antepaís surpirenaico.
Anna Travé   +7 more
doaj   +1 more source

Diagenetic–Porosity Evolution and Reservoir Evaluation in Multiprovenance Tight Sandstones: Insight from the Lower Shihezi Formation in Hangjinqi Area, Northern Ordos Basin

open access: yesLithosphere, 2022
The reservoir property of tight sandstones is closely related to the provenance and diagenesis, and multiprovenance system and complex diagenesis are developed in Hangjinqi area.
Xiao Sun   +10 more
doaj   +1 more source

Bioestratigrafía, tafonomía y paleoecología [PDF]

open access: yes, 2012
Se estudian las relaciones entre la Bioestratigrafía, la Tafonomía, la Paleoecología y las ciencias afines y asociadas, en un intento de clarificar conceptos básicos y de establecer un conjunto lógico y ...
Martinell, Jordi, 1948-   +2 more
core  

Characteristics of Lacustrine Diamictite and Analysis of Diagenetic Reservoir Facies in the Neogene Lower Youshashan Formation in the Dafengshan Tectonic Belt in the Qaidam Basin

open access: yesEnergy Science &Engineering, EarlyView.
Based on field outcrop data, core descriptions, comprehensive thin section data (plain, cast, and fluorescent), scanning electron microscopy, whole rock analysis via X‐ray diffraction, physical property tests, element logging, core recording, and oil pilot tests, we propose utilizing a mature and practical three component classification method for ...
Lin Xie   +7 more
wiley   +1 more source

Porosity evolution in tight gas sands of the Upper Triassic Xujiahe Formation, western Sichuan basin, China

open access: yesRevista Mexicana de Ciencias Geológicas, 2015
Una exploración reciente verificó un significativo potencial gasífero en las arenas compactas de la Formación Xujiahe del Triásico Superior en la parte occidental de la cuenca de Sichuan del suroeste de China.
Dongxia Chen   +4 more
doaj  

Bioestratigrafía, tafonomía y paleoecología [PDF]

open access: yes, 1975
Se estudian las relaciones entre la Bioestratigrafía, la Tafonomía, la Paleoecología y las ciencias afines y asociadas, en un intento de clarificar conceptos básicos y de establecer un conjunto lógico y ...
Martinell, Jordi   +2 more
core   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

open access: yesGeological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito   +8 more
wiley   +1 more source

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