Article
Chemistry, Multidisciplinary
Muhammad Risha, Haylay Tsegab, Omeid Rahmani, Jalal Douraghi
Summary: The presence of clay minerals poses a challenge in evaluating sandstone reservoirs' quality. This study investigates the impact of clay minerals on the porosity and permeability of a clastic reservoir. The results show that clay minerals are strongly associated with a reduction in permeability and porosity.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Physical
Karol Chilmon, Beata Jaworska, Maciej Kalinowski, Wioletta Jackiewicz-Rek, Aleksandra Podkon
Summary: This paper investigates the influence of material and technological factors on the properties of pervious concrete and proposes a new method to assess the vibration time required for its effective porosity. A model is proposed to describe the relationship between the porosity, consistency, and compaction time of pervious concrete.
Article
Soil Science
M. Bonnet, L. Caner, M. Siitari-Kauppi, A. Mazurier, A. S. Mexias, N. Dani, P. Sardini
Summary: This study investigated the mineralogical transformations and the increase in total porosity during granodiorite weathering in South Brazil by combining petrographical observations, mineralogical analyses, and porosity measurements. The results show that the increase in total porosity is likely controlled by the opening of the porosity.
Article
Construction & Building Technology
Kathleen Dall Bello De Souza Risson, Gersson F. B. Sandoval, Francieli S. Cofani Pinto, Marcos Camargo, Andre Campos De Moura, Berenice Martins Toralles
Summary: The study aims to propose standardization of the molding procedure for pervious concrete, ensuring its correctness in application. Research found that the proposed molding procedure produces pervious concrete within standard parameters.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Geochemistry & Geophysics
Julia S. Reece
Summary: The consolidation behavior of mudstone in accretionary wedge systems is influenced by clay fraction, with porosity decreasing and compression index decreasing, while permeability increases as clay fraction decreases. Microscopic images reveal that as clay fraction decreases, matrix porosity decreases, and jagged pore throats are preserved between silt grains during compaction. Comparisons with intact core and field measurements show differences in compression curves due to increasing creep with depth and variations in mudstone fabrics. Empirical models describe the evolution of porosity and permeability with vertical effective stress and grain size. Understanding in situ hydromechanical properties of subduction inputs is crucial for predicting pore fluid pressures and compaction-driven fluid sources in the outer part of the accretionary prism.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Engineering, Petroleum
Jing Fu, Carl Sondergeld, Chandra Rai
Summary: This study develops V-p and V-s velocity systematics for the Meramec Formation using laboratory data and compares them with existing systematics. The study finds that porosity has a greater impact on velocity than mineralogy. It also suggests two methods for calculating V-s from V-p and highlights the importance of calibrating velocity systematics to the target formation.
Article
Thermodynamics
Lianhua Hou, Zhichao Yu, Xia Luo, Songtao Wu
Summary: This study investigates the self-sealing capability of different caprocks and identifies the key minerals that trigger self-sealing. The results show that carbonates and clays are the key minerals for self-sealing. The CO2-fluid-rock interactions in carbonate-rich shale are violent and fluctuate greatly, which is not conducive to short-term safe sequestration but favorable for medium to long-term safe sequestration.
Article
Geochemistry & Geophysics
Andrew Hurst, Michael J. Wilson, Antonio Grippa, Lyudmyla Wilson, Giuseppe Palladino, Claudia Belviso, Francesco Cavalcante
Summary: The mineralogy of mudstone samples from the Moreno and Kreyenhagen formations were analyzed using X-ray diffraction (XRD) and X-ray fluorescence (XRF), showing that smectite is the predominant phyllosilicate present. Smectite in the Moreno Formation was derived from volcaniclastic debris, while in the Kreyenhagen Formation it was from intense sub-tropical weathering of granitoid-dioritic terrane, indicating different sources for the two formations. The samples had chemical indices of alteration indicative of intense weathering of source terrane, with ferriferous enrichment and presence of kaolinite contributing evidence for the intensity of weathering.
Article
Computer Science, Interdisciplinary Applications
Hamza Mhamdi Alaoui, Richard Giot, Dimitri Pret, Philippe Cosenza, Stephen Hedan
Summary: This paper presents a multiscale numerical model for investigating the swelling behavior of clayey rocks. The model considers both crystalline and osmotic swellings and incorporates different interactions in the interlayer and interparticular spaces. The model is implemented in Code_Aster software and validated through constant-volume swelling tests, with good agreement between simulation results and experimental data.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Geosciences, Multidisciplinary
Chao Li, Likuan Zhang, Xiaorong Luo, Zhiping Zeng, Jinlei Xiu, Yuhong Lei, Ming Cheng, Caizhi Hu, Meng Zhang, Wenjun He
Summary: This study analyzed the mineral composition and petrophysical properties of overpressured mudstones in the central Junggar Basin, revealing the significant influence of clay mineral diagenesis on compaction processes, overpressure responses, and rock properties.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Energy & Fuels
Makungu Madirisha, Robert Hack, Freek Van der Meer
Summary: This study investigated the interaction between biodegradable chelating agents and clay minerals under simulated geothermal reservoir conditions. The results showed that BCA1 and BCA3 had a greater impact on dissolution and precipitation compared to BCA2 and no-BCA. These findings suggest that BCA1 and BCA3 could be useful acids for enhancing permeability in geothermal reservoir formations containing clay minerals.
Article
Geochemistry & Geophysics
Lucille Carbillet, Michael J. Heap, Patrick Baud, Fabian B. Wadsworth, Thierry Reuschle
Summary: Experimental studies using synthetic samples sintered with monodisperse glass beads revealed the independent control of porosity and grain diameter, highlighting the importance of porosity and grain size on the mechanical compaction of granular rocks. The findings suggest that porosity plays a primary role in determining the compactive yield strength, while grain size also exerts a significant control and should be routinely measured.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geosciences, Multidisciplinary
Abdulwahab M. Bello, Musa B. Usman, Muhammad A. Ismail, Shehu Mukkafa, Usman Abubakar, Ibrahim A. Kwami, Khalid Al-Ramadan, Abduljamiu O. Amao, Murtada Al-Hashem, Anas M. Salisu, Aliyuda Kachalla, Muhammad B. Abubakar, Abubakar S. Maigari, Lukman U. Chiroma
Summary: This study investigates the relationship between depositional facies, diagenesis, and reservoir quality of the Campanian-Maastrichtian Gombe Sandstone in the Northern Benue Trough, NE Nigeria. It employs a multi-technique approach to analyze thin-section petrography, scanning electron microscopy, and X-ray diffraction data. The study reveals that the sandstone is primarily composed of arkosic and subarkosic material, and deposited in different sub-environments. The interdistributary tidal bar/channel sandstones exhibit the best reservoir quality, while the lower delta front/prodelta, upper delta front/mouth bar, and distributary channel sandstones have poorer reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Materials Science, Ceramics
Junsheng Li, Qiuping Yu, Duan Li, Liang Zeng, Shitao Gao
Summary: Silicon nitride foams with a hierarchical porous structure were successfully formed by combining protein-based gelcasting, chemical vapor infiltration, and in-situ growth of silicon nitride nanowires. These foams have controllable high porosity, good strength, and permeability at different scales, making them suitable for microparticle infiltration applications.
JOURNAL OF ADVANCED CERAMICS
(2021)
Article
Chemistry, Multidisciplinary
Jiwei Jia, Daoyong Wu, Yu Ren, Jiyu Lin
Summary: This study investigates the interaction between clay minerals and colloidal oxides and its impact on the mechanical properties of geotechnical materials. The results show that the intercalated amorphous iron and aluminum oxides can chemically bond with clay minerals, significantly enhancing the strength of the materials, with aluminum-oxygen bonds being more favorable for improving mechanical properties.