Results 31 to 40 of about 4,876 (147)

Rock mechanical properties under reconstructed deep in situ thermo–hydro–mechanical conditions: Implications for CO₂‐related injection scenarios

Deep Underground Science and Engineering, EarlyView.
The graphical abstract illustrates a reconstructed in situ thermo‐hydro‐mechanical (THM) framework in which porosity serves as the central variable linking stress, pore pressure, and temperature to evolving mechanical properties of rocks. Under burial conditions, in situ stress, pore pressure, and temperature jointly govern volumetric strain and ...
Mingyuan Lu, Jun Wang, Zixiong Qi, Ruixuan Chen, Hongtao Wang, Hongwei Zhou   +5 more
wiley   +1 more source

Mineralogía y génesis de las arcillas de las unidades del Campo de Gibraltar. I. Areniscas del Aljibe

Estudios Geologicos, 1988
Las «areniscas del Aljibe» son materiales bimodales constituidos en su mayor parte por cuarzos eólicos con «coating» ferruginoso o arcilloso y cemento de cuarzo sintaxial. Tanto la composición mineralógica de la muestra total como la de la fracción < 2 μ
P. Rodríguez Jiménez, M. D. Ruiz Cruz
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

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, Mingjie Liu, Zhuang Zhang, Sujuan Ye, Yingtao Yang, Ling Wu, Ling Zhang, Hongli Nan, Xiucheng Tan, Wei Zeng, Chengbo Lian   +10 more
doaj   +1 more source

A Reproducible SEM Surface Imaging Protocol for Monitoring Microstructural Changes During Gas–Rock Interactions

Greenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Reliable characterization of mineralogical and textural changes in rock samples is essential for understanding fluid–rock interactions, particularly in experimental studies simulating subsurface conditions. This study presents a reproducible protocol for scanning electron microscopy (SEM) analysis of rock surfaces before and after exposure to ...
Berta Ordóñez‐Casado, Timea Kovács, Sara Roces, Edgar Berrezueta   +3 more
wiley   +1 more source

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

Estudios 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, C. Zazo Cardeña, R. Marfil Pérez   +2 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

Lithosphere, 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, Xianfeng Tan, Yuanlan Tang, Jingchun Tian, Tao Lei, Jia Wang, Long Luo, Chaobin Zhu, Songyu Mo, Huanhuan Zhou, Fuqiang Lai   +10 more
doaj   +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)

Geological 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, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source

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

Geogaceta
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, Miguel Lopez-Blanco, Miquel Coll, Irene Cantarero, Vinyet Baqués, Eloi Carola, David Cruset, Elisabet Playà   +7 more
doaj   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

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

Revista 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, Xiongqi Pang, Liang Xiong, Lei Wang, Mingxian Xie   +4 more
doaj