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1

Hao, Nai, Yongliang Wang, Hao Cheng, Xiaochong Wu, and Yi Zhao. "Hydration Absorption and Thermal Effects of Outcrop Porous Sandstone Based on Intelligent Experimental and Infrared Thermography Techniques." Energies 16, no. 22 (2023): 7540. http://dx.doi.org/10.3390/en16227540.

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Sandstones are enriched in deep energy reservoirs and also exist as outcrop rocks, where the pore characteristics of sandstone are influenced by hydration absorption and thermal effects. To study the influence of the initial temperature on the hydration absorption characteristics of outcrop porous sandstone in the Mogao Grottoes, China, an intelligent experimental device for rock hydration was used. The hydration absorption characteristics and temperature effects of sandstone were analyzed by using infrared thermography techniques to monitor the infrared radiation characteristics of the sandst
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2

Hu, Caizhi, Likuan Zhang, Yuhong Lei, Lan Yu, Jing Qin, and Xiaotao Zhang. "Differential Diagenesis and Hydrocarbon Charge of the Tight-Sandstone Reservoir: A Case Study from Low-Permeable Sandstone Reservoirs in the Ninth Member of the Upper Triassic Yanchang Formation, Ordos Basin, China." Minerals 15, no. 5 (2025): 544. https://doi.org/10.3390/min15050544.

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Studies of hydrocarbon migration and enhanced oil recovery focus on the effects of reservoir heterogeneity on subsurface fluid flow and distribution. Differential diagenesis in clastic rock reservoirs is an important factor of internal-reservoir heterogeneity and its relationship to hydrocarbon charges is a key scientific issue for understanding hydrocarbon accumulation mechanisms in tight-sandstone reservoirs. This paper focuses on the ninth member of the Upper Triassic Yanchang Formation (Chang 9), located in the central and western Ordos Basin, China. The aims of the paper are to examine th
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3

Wu, Dong, Yu Yu, Liangbiao Lin, Hongde Chen, and Sibing Liu. "Characteristics and Control Factors of a High-Quality Deeply Buried Calcareous Sandstone Reservoir, the Fourth Member of the Upper Xujiahe Formation in the Western Sichuan Basin, China." Minerals 14, no. 9 (2024): 872. http://dx.doi.org/10.3390/min14090872.

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A special type of sandstone in which carbonate rock fragments (CRFs) dominate the composition developed in the Upper Triassic Xujiahe Formation’s fourth member (Xu4) in the western Sichuan Basin, known as calcareous sandstone. Calcareous sandstones are widely distributed in the western Sichuan and is the main production target of tight sandstone gas in the Sichuan Basin. In this study, thin sections, porosity–permeability testing, scanning electron microscopy, and X-ray diffraction are applied to examine the characteristics and control factors for high-quality reservoirs in the calcareous sand
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4

Blake, Oshaine O., Ryan Ramsook, Uwaila C. Iyare, and Ariana Osman. "Petrographic, Petrophysical, and Mechanical Characterisation of the Ultra- Tight Casa Cruz Sandstone, Moruga Formation, Southern Basin, Trinidad." West Indian Journal of Engineering 46, no. 2 (2024): 79–90. http://dx.doi.org/10.47412/hzwe3939.

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Durability, compactness, and natural strength of sandstones are pivotal properties for its subsequent application as a building material. If a sandstone is tight and contains petroleum, then hydraulic fracturing is necessary to achieve commercial production. The Casa Cruz Sandstone Member, southern Trinidad, is currently being explored as a potential petroleum target and building material. This study investigates the petrographic, petrophysical, and mechanical characteristics of the Casa Cruz sandstone to understand the factors that control the quality of the sandstone and to determine the san
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5

Zhou, Xiaofeng, Tao Li, Wenhua Xiao, Jun Wei, Baonian Yan, and Junmin Yu. "Occurrences, Distributions, Origins and Forming Mechanisms of Calcite Cements in Upper Triassic Yanchang Formation Sandstones, Ordos Basin." Advances in Engineering Technology Research 12, no. 1 (2024): 1301. https://doi.org/10.56028/aetr.12.1.1301.2024.

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In view of the important influence of calcite cements on the physical properties of sandstone reservoirs, their material sources and formation mechanisms have always been a research hotspot but remain unresolved. Taking the sandstone reservoir of Yanchang Formation of Upper Triassic in Ordos Basin as an example, this paper studies the occurrences, distributions, material sources and formation mechanisms of calcite cements. The Yanchang Formation sandstones, according to the color property of the cores, are divided into the grey sandstone and the grayish brown sandstone. The calcite cements in
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6

Zheng, Dong-Yu, and Si-Xuan Wu. "Principal component analysis of textural characteristics of fluvio-lacustrine sandstones and controlling factors of sandstone textures." Geological Magazine 158, no. 10 (2021): 1847–61. http://dx.doi.org/10.1017/s0016756821000418.

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AbstractTextures are important features of sandstones; however, their controlling factors are not fully understood. We present a detailed textural analysis of fluvio-lacustrine sandstones and discuss the influences of provenance and depositional environments on sandstone textures. The upper Permian – lowermost Triassic Wutonggou sandstones in the Bogda Mountains, NW China, are the focus of this study. Sandstone thin-sections were studied by point counting and their textures were analysed using statistical and principal component analysis. Fluvial lithic, fluvial feldspathic, deltaic lithic, de
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7

Li, Yanzhi, Yue Wu, Weiguo Qiao, Shuai Zhang, and Xungang Li. "The Permeability Evolution of Sandstones with Different Pore Structures under High Confining Pressures, High Pore Water Pressures and High Temperatures." Applied Sciences 13, no. 3 (2023): 1771. http://dx.doi.org/10.3390/app13031771.

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Seepage from the pores of sandstone exposed in deep mines is difficult to block by grouting. In this paper, the permeability evolution of four subcategories of sandstone with different pore structures under different confining pressures, pore water pressures and temperatures is analyzed by experiments. (1) With increasing confining pressure, the permeabilities of the four tested subcategories of sandstone all decrease, but at different rates and to different extents. (2) With increasing pore water pressure, the permeability of subcategory I1, I2 and II1 sandstones increases linearly, while tha
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8

Sørensen, Morten Kanne, and Ida Lykke Fabricius. "Clay squirt: Local flow dispersion in shale-bearing sandstones." GEOPHYSICS 82, no. 1 (2017): MR51—MR63. http://dx.doi.org/10.1190/geo2015-0036.1.

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Dispersion of elastic-wave velocity is common in sandstone and larger in shaly sandstone than in clean sandstone. Dispersion in fluid-saturated shaly sandstone often exceeds the level expected from the stress-dependent elastic moduli of dry sandstone. The large dispersion has been coined clay squirt and is proposed to originate from a pressure gradient between the clay microporosity and the effective porosity. We have formulated a simple model that quantifies the clay-squirt effect on bulk moduli of sandstone with homogeneously distributed shale laminae or dispersed shale. The model prediction
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9

He, Yun, Hengwei Guo, Haoxiang Lan, Can Ling, and Meiyan Fu. "The Effect of Single Sandstone Stacking Pattern on the Sandstone Reservoir Physical Properties—A Case Study from the Shanxi Formation in the Daniudi Area, Northeastern Ordos Basin." Energies 15, no. 13 (2022): 4740. http://dx.doi.org/10.3390/en15134740.

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The role of the single sandstone stacking pattern in controlling the physical properties of the sandstones deposited in the distribution channels of the deltaic plain is unclear. This study aims to reveal the effect of the single sandstone packing patterns on the reservoir qualities of sandstones from the Shanxi Formation in the Daniudi gas field of Ordos Basin. Based on the core observation, 2D-image analysis, and thin section identification, the lithofacies were identified, the stacking patterns of the single sandbody were divided, and the differences in minerals composition and diagenesis o
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10

Huang, Huazhou, Yuantao Sun, Xiantong Chang, Zhengqing Wu, Mi Li, and Shulei Qu. "Experimental Investigation of Pore Characteristics and Permeability in Coal-Measure Sandstones in Jixi Basin, China." Energies 15, no. 16 (2022): 5898. http://dx.doi.org/10.3390/en15165898.

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The research of pore and permeability characteristics of tight sandstone reservoirs in coal-measure is critical for coal-measure gas development. In this study, the pore systems of tight sandstones were studied based on low-field nuclear magnetic resonance (LF-NMR) data. The permeability of tight sandstones was obtained by the tester based on the pulse transient method. The permeability variation with the effective stress, grains, and pore characteristics was analyzed. The results show that the tight sandstone reservoirs in the coal-measure have low total porosity (2.80–4.14%), low effective p
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11

Knysh, Ivan, and Nadiya Kremin. "Zastinoche and budaniv sandstone deposits as potential geotourism objects of the Ternopil region." Visnyk of the Lviv University. Geology Series 35, no. 35 (2021): 111–26. http://dx.doi.org/10.30970/vgl.35.09.

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The article provides information on existing quarries for sandstone mining as promising geotourism locations within the Ternopil region (Western Ukraine). The study area is famous for its ancient mining of natural stone from Terebovlya sandstones. The object of research is located within the Eastern European platform on the territory of Zastinoche and Budanіv deposits. Since princely times, stone has been mined here for the construction of fortresses and defensive structures. Sediments of the Neogene and Devonian ages take part in the geological structure of the Zastinoche deposit. The mineral
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12

Zhang, Jinliang, Zhongqiang Sun, Longlong Liu, and Yang Li. "Sedimentary model of K-Successions Sandstones in H21 Area of Huizhou Depression, Pearl River Mouth Basin, South China Sea." Open Geosciences 11, no. 1 (2019): 997–1013. http://dx.doi.org/10.1515/geo-2019-0077.

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Abstract The nearshore sand bar-sheet sedimentary system of the K-Successions sandstones of the Zhujiang Formation (23.8-16.5 Ma) in H21 Area of Huizhou Depression, Pearl River Mouth Basin has been identified in this research according to lithological characteristics, lithofacies, sedimentary sequence and seismic attributes. Seven lithofacies were recognized: fine-grained massive sandstone (Sm), fine-grained trough cross-bedded sandstone (St), fine-grained planar-bedded sandstone (Sp), fine-grained ripple cross-bedded sandstone (Sr), fine grained horizontally-bedded sandstone (Sh), laminated c
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13

Huang, Wenbiao, Shuangfang Lu, and Salad Hersi Osman. "Quality grading system for tight sandstone reservoirs in the Quantou 4 Member, southern Songliao Basin, Northeast China." Interpretation 5, no. 4 (2017): T503—T522. http://dx.doi.org/10.1190/int-2017-0067.1.

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A grading system for tight sandstone reservoir quality is needed to predict tight oil enrichment areas and assess the resources. To explore the establishment of the grading system, a variety of research methods, such as rate-controlled mercury injection, conventional mercury injection, contact angle measurement, and the mechanical equilibrium principle, are integrated to determine the upper and lower limits of the porosity, permeability, and pore-throat radius of tight sandstones and to establish a quality grading system. Based on the porosity [Formula: see text], permeability [Formula: see te
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14

El-Sayed Land, A. A., and M. D. El-Dairy. "Evaluation of Some Petrophysical Parameters for the Lower Cretaceous Reservoir Rocks, Western Desert, Egypt." Journal Geological Society of India 33, no. 5 (1989): 457–68. http://dx.doi.org/10.17491/jgsi/1989/330509.

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Abstract Water saturation in otherwise hydrocarbon-saturated sandstones is closely related to the sandstone's clay mineralogy. Laboratory analysis of 20 sandstone core samples containing kaolinite, illite and chlorite is used to provide the basis for deciding which petrophysical parameters are most suitable for evaluating clay mineral content and distribution. Among the measured petrophysical parameters, the Mounce potential gives the most realistic correlation with actual clay mineralogy. The existence of both siderite and hematite as cementing materials within the Kharita sandstone pore spac
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15

Keppert, Martin, Jaromír Žumár, Monika Čáchová, et al. "Water Vapor Diffusion and Adsorption of Sandstones: Influence of Rock Texture and Composition." Advances in Materials Science and Engineering 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/8039748.

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The term sandstone is used for wide range of rocks containing quartz clasts which can be cemented by secondary precipitated quartz or calcite; moreover the space between clasts can be filled by matrix. These facts result in existence of numerous rocks having highly various properties. Sandstones have been used as construction materials due to their good accessibility and workability. Since most of sandstones are porous, water vapor can penetrate through sandstone constructions. The rate of water vapor diffusion, as well as the vapor sorption isotherm, was determined for range of sandstone type
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16

Deng, Jimei, Huan Zeng, Peng Wu, et al. "Pore Structure Differentiation between Deltaic and Epicontinental Tight Sandstones of the Upper Paleozoic in the Eastern Linxing Area, Ordos Basin, China." Geofluids 2021 (August 30, 2021): 1–17. http://dx.doi.org/10.1155/2021/9015041.

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Research on tight gas reservoirs in the eastern margin of the Ordos Basin, China, has recently become a hot spot. This paper mainly studies the reservoir characteristics of tight sandstone in the north-central area close to the provenance in eastern Linxing. Cast thin section, scanning electron microscopy, high-pressure mercury injection, and X-ray diffraction (XRD) were applied to discriminate the tight sandstone reservoir differences between the Permian Taiyuan and Shanxi formations in the study area. The results show that the deltaic tight sandstones in the Shanxi Formation are dominated by
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17

Hu, Hai Yan. "Mechanism of Overpressure Formation in Deeply Burial Sandstone." Applied Mechanics and Materials 295-298 (February 2013): 2736–39. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.2736.

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Overpressure is often encountered in the Jurassic tight and the overpressure is closely associated with gas generation. The pressure transfer from the over-pressurized mudstones to adjacent tight sandstones might occur through overpressure induced-fractures. The fine-grained coal containing Jurassic sandstone is sensitive to compaction, and the porosity decreases dramatically with the increase of overlying load. As gas migrates into the tight sandstones, it must overcome the capillary pressure which is greater than the hydrostatic pressure. The gas charging pressure in the tight sandstone must
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18

Zhao, Xiaodong, Xu Cai, Xingya Zhou, et al. "Experimental Study on Compression and Torsion Fracture within 3D Printed Cementation-Weak and Porosity-High Sandstones." Geofluids 2023 (January 10, 2023): 1–18. http://dx.doi.org/10.1155/2023/6051378.

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Cretaceous sandstones have weak cementation and high porosity while exhibit a high apparent brittleness. Compression and torsion (C-T) fractures are widely distributed in Cretaceous sandstones due to asymmetric tectonic convergence action. However, studies on C-T fracture formation and the mechanisms causing variability in Cretaceous sandstones containing no oil or gas are rare due to the challenges in sampling intact sandstone cores, despite their significance to mine shaft sinking. Therefore, this study used binder jetting-based 3D printing to prepare artificial Cretaceous sandstone and deve
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19

Uchida, Etsuo, and Yoshimitsu Kobayashi. "Siliceous Sandstones Used in Local Khmer Temples in Battambang, Ta Keo, and Kampong Cham Provinces, Cambodia." Heritage 7, no. 2 (2024): 608–20. http://dx.doi.org/10.3390/heritage7020029.

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Siliceous sandstones used in Khmer temples such as the Prasat Basset, Wat Ek Phnom, and Phnom Banan temples in Battambang Province, Phnom Chisor and Ta Prohm temples in Ta Keo Province, and Wat Nokor Bachey temple in Kampong Cham Province in Cambodia were investigated in this study to determine the supply source of the siliceous sandstones used in these temples. Chemical composition analyses and magnetic susceptibility measurements were conducted for the sandstone blocks used in these temples. Siliceous sandstone is the primary construction material in the investigated temples, except for the
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20

Gong, Linxian, Lei Nie, and Yan Xu. "Geometrical and Topological Analysis of Pore Space in Sandstones Based on X-ray Computed Tomography." Energies 13, no. 15 (2020): 3774. http://dx.doi.org/10.3390/en13153774.

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The pore geometry and topology properties of pore space in rocks are significant for a better understanding of the complex hydrologic and elastic properties. However, geometry and topology information about the sandstone pore structures is not fully available. In this study, we obtained the topological and geometrical pore parameters from a representative elementary volume (REV) for fluid flow in sandstone samples. For comparison, eight types of sandstones with various porosities were studied based on the X-ray micro-computed tomography technique. In this study, the REV size was selected based
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21

Barclay, S. A., K. Liu, and D. Holland. "RESERVOIR QUALITY, DIAGENESIS AND SEDIMENTOLOGY OF THE PALE AND SUBU SANDSTONES: RE-VISITING THE EASTERN PAPUAN BASIN, PAPUA NEW GUINEA." APPEA Journal 43, no. 1 (2003): 515. http://dx.doi.org/10.1071/aj02027.

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Two shallow diamond drill holes (Subu–1 and Subu–2) continuously cored in August and September 2001 by InterOil Australia represent the first sub-surface penetrations of reservoir quality sandstones in the Eastern Papuan Basin of Papua New Guinea. These wells intersected two sedimentologically distinct thick quartz sandstones (>100 m). The upper sandstone unit is Campanian in age and is correlated with the Pale Sandstone, whereas the lower sandstone is of Turonian age and has not been reported previously, and is tentatively named as the Subu Sandstone in this paper.The core has been the sub
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Rizal, Yan, and Aji Rahmat Gumilar. "The Architectural Element Distribution of Cinambo Formation in Jatigede Area, Sumedang District, West Java - Indonesia." Modern Applied Science 13, no. 7 (2019): 94. http://dx.doi.org/10.5539/mas.v13n7p94.

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This research is conducted in Jatigede subdistrict, Sumedang district, West Java Province, Indonesia, with a geographic position 175500 - 185000E and 9237800 -9242200 S. There are many different types of rocks scattered forming the Cinambo Formation including sandstones, mudstones, alternation claystones, conglomeratic sandstones, and conglomerate stones. Stratigraphic cross-section measurements on the Cimanuk River and Cinambo River traverses is carried out to figure out the distribution of the architectural elements of the Cinambo Formation. Nine lithofacies are obtained from both traverses:
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23

Chaney, A. J., C. J. Cubitt, and B. P. J. Williams. "RESERVOIR POTENTIAL OF GLACIO-FLUVIAL SANDSTONES: MERRIMELIA FORMATION, COOPER BASIN, SOUTH AUSTRALIA." APPEA Journal 37, no. 1 (1997): 154. http://dx.doi.org/10.1071/aj96009.

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Sedimentological analysis of cored sections within the Merrimelia Formation (basal Gidgealpa Group, Cooper Basin, S.A.) reveals a complex glacigenic environment, including glacio-lacustrine, deltaic, shorezone, fluvial, aeolian and other terrestrial facies. These facies are observed within terminoglacial and proglacial environments, and interfinger constantly throughout the Merrimelia Formation, exhibiting rapid environment change related to position of the ice sheet. Detailed sedimentological and petrological analysis, suggests that Tirrawarra sandstone-type facies belongs within the Merrimel
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Li, Quanhui, Xiaojie Xia, Hui Xiao, et al. "Comparative Study on the Damage of Different Fracturing Fluids in Tight Sandstone." Petrophysics – The SPWLA Journal of Formation Evaluation and Reservoir Description 66, no. 3 (2025): 489–520. https://doi.org/10.30632/pjv66n3-2025a7.

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Tight sandstone gas reservoirs have been characterized by a good content of gas and abundant reserves. Past studies have mainly focused on fracturing and production enhancement effects, ignoring the damage caused by fracturing fluids to reservoirs. We analyzed the sources of fracturing fluid damage to reservoirs by conducting indoor experimental studies of different fracturing fluids on dense sandstone reservoirs (quartz sandstone and clastic sandstone) and assessed the extent and characterization of fracturing fluid damage and hydrolock damage by conducting an indoor pilot study using three f
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25

Fauziah, Cut Aja, Emad A. Al-Khdheeawi, Ahmed Barifcani, and Stefan Iglauer. "Wettability measurements on two sandstones: an experimental investigation before and after CO2 flooding." APPEA Journal 60, no. 1 (2020): 117. http://dx.doi.org/10.1071/aj19099.

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Wettability of rock–fluid systems is an important for controlling the carbon dioxide (CO2) movement and the capacities of CO2 geological trapping mechanisms. Although contact angle measurement is considered a potentially scalable parameter for evaluation of the wettability characteristics, there are still large uncertainties associated with the contact angle measurement for CO2–brine–rock systems. Thus, this study experimentally examined the wettability, before and after flooding, of two different samples of sandstone: Berea and Bandera grey sandstones. For both samples, several sets of floodi
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Liang, Bing, Yangqi Ma, Weiji Sun, Xu Qin, Guotao Shi, and Bo Liang. "Experimental study on the effect of CO2 injection on the permeability characteristics of reservoir sandstone." PLOS ONE 20, no. 1 (2025): e0317134. https://doi.org/10.1371/journal.pone.0317134.

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Using the Ordos Basin dry sandstone and sandstone saturated with different saline concentrations as research subjects, a self-developed constant temperature and pressure CO2 injection simulation device was employed to conduct permeability tests on sandstone under varying effective stresses and CO2 injection pressures. The test results indicated that during the CO2 injection process, the permeability of dry sandstone was two orders of magnitude higher than that of sandstones saturated with different saline concentrations. When the effective stress increases from 10 MPa to 28 MPa, the fissure co
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27

Yuan, Rui, Qi Sun, Manli Zhan, et al. "Fractal Dimensions of Particle Size Distribution in Littoral Sandstones of Carboniferous Donghetang Formation in Hade Oilfield, Tarim Basin, NW China." Fractal and Fractional 9, no. 6 (2025): 364. https://doi.org/10.3390/fractalfract9060364.

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Fractal theory of particle size distribution (PSD) is a widely used approach in soil science. However, fractal studies on sandstone PSDs are scarce in sedimentology and geology. Taking littoral sandstones in the Carboniferous Donghetang Formation of the Hade Oilfield as an example, fractal dimensions of 115 fine sandstone and 150 silty sandstone PSDs are calculated and compared with particle size compositions and traditional statistical parameters in this paper. The results show that fractal dimension values in fine sandstones, 1.69–2.17 averaged at 1.99, are usually lower than that in silty s
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Zobah, Theresa, Caspar Adenutsi, Godfrey Amedjoe, et al. "Evaluation of porosity and permeability of sandstones within the Oti Group of the Volta Basin using petrophysical and petrographic techniques." Journal of the Ghana Institution of Engineering (JGhIE) 23, no. 3 (2023): 24–37. http://dx.doi.org/10.56049/jghie.v23i3.100.

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This study investigates the reservoir quality of sandstones in the Oti Group of the Volta Basin of Ghana. Geological field mapping, petrographic, petrophysical, mineralogical, and geochemical techniques are used to investigate the reservoir parameters of the sandstones by evaluating the fluid holding and transmission capabilities of the rocks. Results from the comprehensive study identified two sandstone formations of interest; viz. the Bimbila Sandstone and Yabraso Sandstone. Both sandstones were found to be quartz sandstones (sub-arkose and quartz arenites). The Bimbila Sandstones proved to
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Wu, Chao, Shengquan Wang, Delu Li, and Xiaokang Wang. "NMR Experimental Study on Dynamic Process of Pore Structure and Damage Mechanism of Sandstones with Different Grain Sizes under Acid Erosion." Shock and Vibration 2020 (January 8, 2020): 1–13. http://dx.doi.org/10.1155/2020/3819507.

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In many engineering projects, it is critical to consider the acid erosion of rock. This study investigates dynamic changes in pore structure and damage mechanisms in sandstones subjected to acid erosion. Specimens with three grain sizes were immersed in acid solution and tested by the nuclear magnetic resonance technique. Changes in solution pH, specimen mass and porosity, T2 spectrum distribution, and area were analyzed. Damage mechanisms are discussed, and relationships between porosity and acid erosion damage variables are established. The results show that acid erosion has significant effe
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Liang, Jiwei, Wenxing Tao, and Xiaojun Ma. "Origin and paleoenvironmental reconstruction of phosphorus-bearing sandstones of the Cambrian Xinji Formation, southwestern margin of the Ordos Basin, China." Canadian Journal of Earth Sciences 57, no. 8 (2020): 903–17. http://dx.doi.org/10.1139/cjes-2019-0087.

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Increasing exploration interest in oil and gas hosted by early Cambrian strata has focused research efforts on early Cambrian sandstones. The origin of phosphorus and the paleoenvironment of phosphorus-bearing sandstones from the Xinji Formation are discussed in this paper. X-ray diffraction, optical microscopy, grain size analysis, total organic carbon, and the concentrations of major, trace, and rare earth elements (REEs) are analyzed in this work. The sandstones are mostly sublitharenite with calcareous cement. The content of the sandstone samples is quartz (39.8%–73.9%), with illite (7.9%–
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Bandyopadhyay, Saswati, and Dhiraj Kumar Rudra. "Upper Gondwana Stratigraphy, North of the Pranhita-Godavari Confluence, Southern India." Journal Geological Society of India 26, no. 4 (1985): 261–66. http://dx.doi.org/10.17491/jgsi/1985/260404.

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Abstract A revised geological map showing the Upper Gondwana stratigraphy of the area north of the Pranhita-Godavari confluence is presented. The early Upper Triassic (Carnian) Maleri Formation, is overlain conformably by the Dharmaram Formation of late Upper Triassic (Norian-Rhaetian) age. The two local sandstones, viz., the Sironcha sandstone and the Anaram sandstone, earlier believed to be the lithological constituents of the Lower Gondwana Kamthi Formation and the Upper Gondwana Kota Formation, respectively, are found to be inter-related. The two sandstones have been mapped within the Dhar
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Arif, Subhan, Nurul Dzakiya, Samuel Kristiyana, and Rohmad Bagus Abadi. "Identification of the Potential Quartz Sandstone in the Sambong Area By the Dipole-Dipole Configuration of Resistivity Method." Journal of Applied Geospatial Information 7, no. 1 (2023): 813–19. http://dx.doi.org/10.30871/jagi.v7i1.5276.

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The presence of quartz sandstone outcrops in the southeast of the study site suggests the presence of quartz sandstones in the northwest, according to the strike direction. This geoelectrical measurement aims to determine the distribution of these sandstones below the surface. The method used is geoelectric with a dipole dipole configuration.
 Measurements were made on four track lines. Tracks A and B indicate the existence of a layer of sandstone below the surface. Tracks C and D do not show any layers of quartz sandstone. This is caused by the presence of faults or folds that cause the
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33

Al-Mashaikie, Saad Z. A. Kader, and Younis A. Mohammed. "ANATOMY OF CARBONATE BRECCIAS, TURBIDITE FACIES AND DEPOSITIONAL SYSTEMS OF GERCUS FORMATION IN DOKAN AREA, NORTHERN IRAQ." Iraqi Geological Journal 50, no. 1 (2017): 90–103. http://dx.doi.org/10.46717/igj.50.1.7ms-2017-06-29.

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Four facies associations are classified based on facies types, sedimentary structures and facies successions, these are; distal slope apron siliciclasticcalciturbidites (siliciclastic/ carbonate dominated), proximal marine siliciclasticcalciturbidites (carbonate/ siliciclastic dominated), distal basinal fan siliciclastic turbidites (siliciclastic dominated) and proximal basinal fan siliciclasticcalciturbidites (carbonate/ siliciclastic dominated). The most important characteristic representative facies types are; ball and pillows dolomite (reported here for the first time), thick fissile shale
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Zhang, LiKuan, Xiaorong Luo, Mingze Ye, et al. "Small-Scale Diagenetic Heterogeneity Effects on Reservoir Quality of Deep Sandstones: A Case Study from the Lower Jurassic Ahe Formation, Eastern Kuqa Depression." Geofluids 2021 (March 24, 2021): 1–25. http://dx.doi.org/10.1155/2021/6626652.

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The Lower Jurassic Ahe Formation is an important exploration target for deep clastic reservoirs in the eastern Kuqa Depression. The Ahe Formation sandstones show heterogeneous porosity and permeability petrophysical properties. These properties have been poorly understood, limiting forecast of petroleum accumulations and making it difficult to develop the reservoirs. Based on cores, thin sections, SEM, and fluid inclusions, this study examined sandstone composition and texture and diagenetic heterogeneity at the core scale. The aim was to understand the influence of variations in detrital comp
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Singh, Paritosh, and Thomas Davis. "Advantages of Shear Wave Seismic in Morrow Sandstone Detection." International Journal of Geophysics 2011 (2011): 1–16. http://dx.doi.org/10.1155/2011/958483.

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The Upper Morrow sandstones in the western Anadarko Basin have been prolific oil producers for more than five decades. Detection of Morrow sandstones is a major problem in the exploration of new fields and the characterization of existing fields because they are often very thin and laterally discontinuous. Until recently compressional wave data have been the primary resource for mapping the lateral extent of Morrow sandstones. The success with compressional wave datasets is limited because the acoustic impedance contrast between the reservoir sandstones and the encasing shales is small. Here,
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Savage, Jeni E., Margaret A. Bradshaw, and Kari N. Bassett. "Marginal marine depositional setting and correlation of the Devonian Sperm Bluff Formation (Taylor Group), southern Victoria Land, Antarctica." Antarctic Science 25, no. 6 (2013): 767–90. http://dx.doi.org/10.1017/s0954102013000205.

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AbstractAnalysis of conglomerates and sandstones of the Sperm Bluff Formation at the base of the Taylor Group (Devonian) between the Mackay Glacier and Bull Pass provides new insights into the nature of initial coarse-grained deposition on basement along the northern side of the McMurdo sedimentary basin. Six lithofacies are recognized in the Sperm Bluff Formation: conglomerate lithofacies, pebbly sandstone lithofacies, cross-bedded sandstone lithofacies, low-angle cross-stratified sandstone lithofacies, bioturbated sandstone lithofacies and interbedded siltstone/sandstone lithofacies. Sedimen
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37

Laasch, H., T. Medic, and A. Wieser. "TOWARDS ASSESSING SANDSTONE SURFACE MOISTURE AND DEGRADATION LEVEL FROM RADIOMETRICALLY CORRECTED TLS INTENSITY DATA." ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences X-1/W1-2023 (December 5, 2023): 567–74. http://dx.doi.org/10.5194/isprs-annals-x-1-w1-2023-567-2023.

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Abstract. Water is a prevalent deterioration agent for historic masonry works, especially those made of clay-bearing sandstones. To preserve cultural heritage made of sandstone, it is important to monitor, and then detect the regions with water retention or stone deterioration. To that aim, we investigate the prospects of terrestrial laser scanner (TLS) intensities for quantifying moisture in sandstone. Through a series of experiments following the drying processes of sandstone samples, we verify that TLS intensities can serve as moisture proxies for remote-sensing water retention. We identify
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Al-Khdheeawi, Emad A., Doaa Saleh Mahdi, Yujie Yuan, and Stefan Iglauer. "Influence of Clay Content on CO2-Rock Interaction and Mineral-Trapping Capacity of Sandstone Reservoirs." Energies 16, no. 8 (2023): 3489. http://dx.doi.org/10.3390/en16083489.

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The injection of carbon dioxide (CO2) is an essential technology for maximizing the potential of hydrocarbon reservoirs while reducing the impact of greenhouse gases. However, because of the complexity of this injection, there will be many different chemical reactions between the formation fluids and the rock minerals. This is related to the clay content of sandstone reservoirs, which are key storage targets. Clay content and clay types in sandstone can vary substantially, and the influence of these factors on reservoir-scale CO2-water-sandstone interactions has not been managed appropriately.
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Wang, Jing, Fawang Ye, Chuan Zhang, and Zhaodong Xi. "Factors That Control the Reservoir Quality of the Carboniferous–Permian Tight Sandstones in the Shilounan Block, Ordos Basin." Processes 11, no. 8 (2023): 2279. http://dx.doi.org/10.3390/pr11082279.

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The Carboniferous–Permian, coal-bearing, sedimentary succession on the eastern edge of the Ordos Basin in the Shilounan Block contains large accumulations of hydrocarbon resources. During the exploration of coalbed methane and tight sandstone gas in the study area, multiple drilling wells in the tight sandstone reservoirs have yielded favorable gas logging results. The Benxi, Taiyuan, Shanxi, Shihezi, and Shiqianfeng formations contain multiple sets of sandstone reservoirs, and the reservoir quality and the controlling factors of its tight sandstones were affected by sedimentation, diagenetic
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Peng, Xiaoxia, Zexin Fang, Xin Cheng, Ling Guo, and Jianni Liu. "Sedimentological and Geochemical Characterization of the Early Cambrian Eastern Yunnan, Southwestern China." Minerals 14, no. 5 (2024): 445. http://dx.doi.org/10.3390/min14050445.

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The accurate reconstruction of the early Cambrian paleoclimate and paleoceanographic conditions on the Yangtze Plate is crucial for understanding the ancient environment during the Cambrian Explosion. It is also a key factor in understanding the ecological habits of organisms during the Cambrian Explosion. The study utilized field outcrops, thin section analysis, and major and trace elements to investigate the sedimentary environment, provenance, paleoweathering, and paleoclimate of the Lower Cambrian Hongjingshao (HJS) Formation (Cambrian Stage 3, ~515 Ma) in the Yangtze Basin, eastern Yunnan
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Li, Jian, Zhao-Wen Du, and Zhong-Ping Guo. "Effect of High Temperature (600°C) on Mechanical Properties, Mineral Composition, and Microfracture Characteristics of Sandstone." Advances in Materials Science and Engineering 2020 (August 12, 2020): 1–19. http://dx.doi.org/10.1155/2020/5072534.

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Rock destruction under high-temperature conditions is a key issue for nuclear waste treatment projects, underground coal gasification, and improvement of the use of geothermal energy for heating. Therefore, in this study, various methods and techniques were integrated to study the changes in mechanical properties, mineral composition, and microscopic fracture characteristics of Sichuan sandstone treated at 600°C. First, the fracture toughness and indirect tensile strength of untreated sandstones and high-temperature treated sandstones were tested by the MTS testing machine, and the double-K mo
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Li, Fu Lai, Wen Shuai Li, Zhong Feng Duan, and Yan Deng. "Petrologic Characteristics of Dawsonite-Bearing Sandstones in Dongying Sag of Bohai Bay Basin, China." Advanced Materials Research 1010-1012 (August 2014): 1376–79. http://dx.doi.org/10.4028/www.scientific.net/amr.1010-1012.1376.

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A large number of dawsonite-bearing sandstones has been found in Dongying Sag of Bohai Bay basin. The petrological characteristics of these sandstones, such as the framework clastic composition, cements, authigenic minerals and diagenetic paragenesis succession are investigated by polarizing microscope, SEM, and Alizarin Red-S staining etc. The results show that these kinds of dawsonite-bearing sandstone are feldspathic sandstone or debris-feldspar sandstone with mainly fine or fine to medium particle size, poor to mediocre sorting features, poor psephicity and dot-line contact. The cements an
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Lin, Wen, David Kynaston, Curtis Ferron, Janok P. Bhattacharya, and William Matthews. "Depositional and sequence stratigraphic model of transgressive shelf sandstone: The Late Cretaceous Tocito Sandstone, San Juan Bain, New Mexico, U.S.A." Journal of Sedimentary Research 91, no. 4 (2021): 415–32. http://dx.doi.org/10.2110/jsr.2020.121.

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ABSTRACT There has long been debate about the origin of long, linear, isolated shallow marine sandstones. In the 1980s these were routinely interpreted as wave- or tide-modulated shelf sandstones. With the advent of sequence stratigraphy, many of these sandstones were reinterpreted as top-truncated forced-regressive to lowstand delta or shoreface, inviting the question regarding whether the concept of a shelf sandstones remain a viable depositional model. More recent syntheses demonstrate that shelf sands tend to be derived by reworking of underlying sediment through transgressive erosion and
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Jiu, Bo, Wenhui Huang, Jing Shi, and Mingqian He. "Growth Mechanism of Siliceous Cement in Tight Sandstone and Its Influence on Reservoir Physical Properties." Energies 11, no. 11 (2018): 3133. http://dx.doi.org/10.3390/en11113133.

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To investigate the effect of siliceous cementation on the densification of sandstone and the forming process of tight sandstone, based on cathodoluminescence, scanning electron microscopy and thin section analysis, the growth mechanism and characteristics of quartz particles in tight sandstone formations are explored. Meanwhile, combined with conventional core analysis and X-ray diffraction experiments, the factors affecting the crystallization of quartz particles, including the chlorite content, grain size and clay mineral, are analyzed, respectively. The entire siliceous cementation is divid
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Xie, Dao Lei, Jiu Chuan Wei, Hui Yong Yin, et al. "Comprehensive Prediction about Water Abundance of NO.5 Coal Seam Roof’ Sand in Yili NO.1 Coal Mine." Advanced Materials Research 706-708 (June 2013): 483–87. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.483.

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Collect geological and hydrogeological data of Yili NO.1 coal mine and analyze Hydrogeological Characteristics of sandstone aquifers in the roof of No5 coal seams; predict the water abundance and classify sandstone aquifers’ water abundance with considering the sandstone’s thickness, content and lithology structure index, and provide the basis for controlling the sandstone water of NO.5 coal seam’s roof.
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46

Ehling, Angela. "Cretaceous building sandstones in northern Germany." Geological Society, London, Special Publications 486, no. 1 (2018): 205–15. http://dx.doi.org/10.1144/sp486.7.

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AbstractCretaceous sandstones occur mainly in the north and NE of Germany. Some of them have been quarried for more than a thousand years and they have been transported to other regions, even abroad, from as early as medieval times. These are the Elbe Sandstones in Saxony, the Wealden Sandstones and the Bentheimer Sandstone in Lower Saxony and the Baumberger Sandstone in North Rhein-Westfalia. All of these are still quarried, and all can be used as building stone as well as for sculptures. They are introduced with their special features and their use over the centuries.
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Wieczorek, Andrzej N., Iwona Jonczy, Krzysztof Filipowicz, et al. "Effect of the Mineralogical Composition of Sandstones on the Wear of Mining Machinery Components." Coatings 14, no. 7 (2024): 859. http://dx.doi.org/10.3390/coatings14070859.

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The paper provides and comments on the results of studies of the effect of sandstone-based abrasives and quartz sand alone on the wear of martensitic surfaces of wear-resistant steels. The wear process was examined on a ring-on-ring test rig seeking to determine the mass decrement parameter which characterised wear. In addition, SEM microscopy, optical profilometry and XRF analysis were used to analyse the abrasives used and damaged surfaces. The tests were conducted for three sandstone varieties, Carboniferous, Permian, and Cretaceous, and they made it possible to determine that the most inte
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Li, Kuizhou, Xuehui Han, Hao Zhang, Tao Fang, Xingping Luo, and Junguang Nie. "Effects of clay types and fractions on elastic properties of artificial clay-bearing sandstones: an experimental study." Journal of Geophysics and Engineering 20, no. 1 (2023): 103–16. http://dx.doi.org/10.1093/jge/gxac099.

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Abstract Experimentally understanding the effects of clay type and fraction on the elastic properties of clay-bearing sandstone is crucial for exploring hydrocarbon reservoirs. Therefore, we artificially synthesized a series of pure clay rocks and clay-bearing sandstones with different clay types and fractions, and conducted the ultrasonic measurements to investigate the elastic behaviors. According to experiments on pure clay rocks, illite rocks have the highest porosity, followed by montmorillonite rocks and chlorite rocks. In terms of elastic properties, illite rocks show the highest ultras
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Greig, Iain P., Andrew Morton, Dirk Frei, and Adrian Hartley. "Establishing Provenance from Highly Impoverished Heavy Mineral Suites: Detrital Apatite and Zircon Geochronology of Central North Sea Triassic Sandstones." Geosciences 13, no. 1 (2022): 13. http://dx.doi.org/10.3390/geosciences13010013.

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A study of Triassic sandstones in the central North Sea, UK, has shown that combined detrital zircon and apatite geochronology and apatite trace element analysis is a powerful tool for reconstructing provenance for sandstones with diagenetically impoverished heavy mineral suites. Sandstones in the earlier part of the succession (Bunter Sandstone Member and Judy Sandstone Member) have characteristics that indicate derivation from Moinian–Dalradian metasediments affected by Caledonian tectonothermal events, in conjunction with a Palaeoproterozoic-Archaean source unaffected by Caledonian metamorp
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Lv, Gui You. "Research on Character of Sandlayer in Heidimiao Oil Layer in Yingtai Area." Advanced Materials Research 734-737 (August 2013): 426–31. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.426.

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Based on the division and correlation of sand groups in Heidimiao, synthesizing the information of 3D seism data, drilling data, logging data and core data, well ties profile, sandstone contrast diagram and oil reservoir profile are drawn in this article in a way of combining the data of logging and seism. Furthermore, spatial distribution rules of sandlayer in Heidimiao oillayer are expected to be analyzed in this article through the data of stratum thickness, sandstone thickness, the thickness ratio of sandstone to stratum, and porosity isogram. The rules are described as: the Heidimiao oil
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