Relevant bibliographies by topics / Sandstone-hosted

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Sandstone-hosted'

Author: Grafiati
Published: 3 June 2025
Last updated: 19 July 2025

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Journal articles on the topic "Sandstone-hosted"

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Penney, R. "Australian sandstone-hosted uranium deposits." Applied Earth Science 121, no. 2 (2012): 65–75. http://dx.doi.org/10.1179/1743275812y.0000000018.

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Saleh, I. Bute. "URANIUM ORE DEPOSITS IN NORTHEASTERN NIGERIA: GEOLOGY AND PROSPECT." Continental J. Earth Sciences 8, no. 1 (2013): 21–28. https://doi.org/10.5281/zenodo.833459.

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Uranium potential in northeastern Nigeria occurs in sandstone-hosted and vein-type mineralization. Sandstone-hosted deposits occurs in sedimentary/volcanosedimentary sequences in structurally controlled Bima sandstone (B<sub>2</sub>, B<sub>3</sub>) at Zona and Dali, while the vein-type mineralization occurs in the deformed migmatites and granitoids at Gubrunde, Kanawa, Ghumchi, Mika and Monkin-Maza deposits. Sandstone deposits have been drilled by Nigeria uranium mining company (NUMCO) and seems to be elusive, which leads to its failure to search for economic deposits, the possible economic deposits is the vein-type.
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Wilkinson, Mark, and Michael D. Dampier. "The rate of growth of sandstone-hosted calcite concretions." Geochimica et Cosmochimica Acta 54, no. 12 (1990): 3391–99. http://dx.doi.org/10.1016/0016-7037(90)90293-t.

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Wilkinson, M. "“The rate of growth of sandstone-hosted calcite concretions”." Geochimica et Cosmochimica Acta 55, no. 4 (1991): 1182. http://dx.doi.org/10.1016/0016-7037(91)90176-6.

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Li, Qi, Bailin Wu, Jingjing Luo, et al. "Characters and Metallogenetic Significance of Organic Matter in Coal from the Daying Sandstone-Hosted Uranium Deposit in the Northern Ordos Basin, China." Minerals 13, no. 8 (2023): 1002. http://dx.doi.org/10.3390/min13081002.

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Coal is usually found in many sandstone-hosted uranium deposits in western China. However, it remains unclear whether coal organic matter is related to the mineralization of uranium in sandstone. In this study, the organic matter of coal containing lenticular carbon plant strips and carbon clastics was analyzed in different alteration zones in the Daying sandstone-hosted uranium deposit located in the northern Ordos Basin. According to geological and geochemical characters, Daying sandstone can be classified into three alteration zones: the oxidation zone, the transition zone, and the reduction zone. The results are as follows. Firstly, the maceral organic matter of the coal at Daying is mostly vitrinite, indicating the characters of humic coal. The maturity of the organic matter is low, which is in the transitional evolution stage of immature lignite or lignite-long-flame coal. Secondly, the kerogen is mainly type III (humic type), which can be easily transformed into humic acid with a strong adsorption capacity for uranium. Thirdly, the vitrinite reflectance (Ro) of the coal organic matter in the transition zone is higher than that of the other alteration zones. Meanwhile, there are bright white bands in the microscopic components of the organic matter of the coal in the transition zone (mineralized zone) and a certain composition of the sapropelite has strong fluorescence. All three aforementioned phenomena are related to the radioactivity of uranium, and each of them possesses the potential for application in mineral exploration. Fourthly, the extraction and separation of humic substances indicates that humic acid plays a key role in organic matter-related uranium mineralization. In the transition zone, uranium can co-precipitate as a humate, and the transition zone’s organic carbon content increases. Therefore, the organic matter in coal contributes to sandstone-hosted uranium mineralization, providing a further guide to prospecting methodologies.
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Radwany, Molly R., and Isabel F. Barton. "The process mineralogy of leaching sandstone-hosted uranium-vanadium ores." Minerals Engineering 187 (September 2022): 107811. http://dx.doi.org/10.1016/j.mineng.2022.107811.

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PARNELL, JOHN, and BRYAN MONSON. "Sandstone-hosted thorium-bitumen mineralization in the Northwest Irish Basin." Sedimentology 37, no. 6 (1990): 1011–22. http://dx.doi.org/10.1111/j.1365-3091.1990.tb01842.x.

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Abzalov, M. Z. "Sandstone-hosted uranium deposits amenable for exploitation byin situleaching technologies." Applied Earth Science 121, no. 2 (2012): 55–64. http://dx.doi.org/10.1179/1743275812y.0000000021.

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Chen, W. "Mesozoic and cenozoic sandstone-hosted copper deposits in south China." Mineralium Deposita 23, no. 4 (1988): 262–67. http://dx.doi.org/10.1007/bf00206406.

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Novoselov, Konstantin, Elena Belogub, Ekaterina Palenova, and Ivan Blinov. "Silver minerals in the Unkur sandstone-hosted Cu deposit (Transbaikalia region, Russia)." Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry 196, no. 3 (2020): 221–30. http://dx.doi.org/10.1127/njma/2020/0192.

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The Kodar-Udokan ore district in the Transbaikalia region of Russia contains numerous sandstone-hosted Cu deposits and occurrences with variable Ag content. The Unkur deposit with possible resources of 62 million tonnes at 0.53 % Cu and 38.6 g/t Ag is hosted in metasedimentary rocks of the Udokan Group of 2.2–2.6 Ga in age. The bornite–chalcopyrite ores from the deposit are characterized by disseminated, lenticular, pocket, and veinlet textures and also contain numerous silver minerals including native silver, mercurian silver (up to 37.4 wt% Hg), stromeyerite, mckinstryite, balkanite, and naumannite. Isomorphic silver is also hosted in bornite (up to 3.8 wt%) and chalcocite (up to 1.8 wt% Ag). The microscopic relationships between ore minerals and stability of stromeyerite indicate almost synchronous formation of native silver, mercurian silver, and stromeyerite at a temperature of &lt; 100 °C. The presence of Ag–Hg minerals is a characteristic feature of ores from the Cu–Ag deposits hosted in sedimentary and carbonate-sedimentary rocks.
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Dissertations / Theses on the topic "Sandstone-hosted"

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Wilkinson, Mark. "Sandstone-hosted concretionary cements of the Hebrides, Scotland." Thesis, University of Leicester, 1989. http://hdl.handle.net/2381/34983.

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The geometries of the sandstone-hosted calcite concretions of the Jurassic Valtos Sandstone Formation and Bearreraig Sandstone Formation are described and related to the processes operating during concretion growth. As concretionary bodies analogous to those studied form potential permeability barriers within some North Sea petroleum reservoirs; the relationship between the growth processes and permeability barrier formation is examined. The growth times for model spherical concretions are calculated for the complex carbonate-water system. Two growth processes are modelled, solute transport and surface reaction. Growth times for a 1m diameter concretion forming under geologically reasonable conditions are predicted to be 22.3Ma, which reduces to 8.8Ma in porewaters flowing at 1m/year. The depth of formation of the concretions is assessed, through an examination of depth dependent properties of both the host-sediment and the calcite cement, and is found to be less than 500m. Concretion formation preceeded the Paleocene igneous activity which affected the Hebrides. The majority of the concretions examined formed at burial depths which were too great to allow effective contact between the concretions and seawater. The major source of carbonate was the dissolution of aragonitic shell material from within the host sandbody. The nature of the porewaters from which the concretions formed is assessed. The majority were meteoric in origin, though some marine influence is noted. The minor element contents of the cements cannot be used to calculate porewater compositions, as disequilibrium between the porewaters and the cements can be demonstrated. A model is proposed to account for the minor element patterns. Crystal breeding can be demonstrated to have occurred during concretion growth. A hypothesis is presented to explain the petrographic features of a typical Valtos Sandstone Formation concretion.
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Levy, David J. "Manganese mineralization hosted by the Rocky Gap Sandstone in Bland County, Virginia." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/104304.

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Veale, Christopher J. "Geochemical and sedimentological controls on the origin of sandstone-hosted radioelement-rich bitumens." Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388200.

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Li, Ning. "Depositional controls and genesis of the Jinding sandstone-hosted Zn-Pb deposit, Yunnan Province, Southwest China /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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Thesis (Ph. D.)--University of Texas at Austin, 1998.<br>Vita. One folded ill. in pocket. Includes bibliographical references (leaves 222-235). Available also in a digital version from Dissertation Abstracts.
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Lucks, Timothy J. "Controls on mineralization and ore distribution in the Laisvall Sandstone hosted Pb/Zn deposit, Northern Sweden." Thesis, University of Leeds, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400933.

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Cloutier, Jonathan. "Petrology of the non-mineralized Wheeler River sandstone-hosted alteration system and the Eagle Point and Millennium basement-hosted unconformity-related uranium deposits, Athabasca Basin, Saskatchewan: implications for uranium exploration." Thesis, Kingston, Ont. : [s.n.], 2009. http://hdl.handle.net/1974/5264.

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Ng, RONALD. "GEOCHEMICAL AND MINERALOGICAL EVOLUTION OF THE MCARTHUR RIVER ZONE 4 UNCONFORMITY-RELATED URANIUM ORE BODY AND APPLICATION OF IRON OXIDATION STATE IN CLAY ALTERATION AS INDICATOR OF URANIUM MINERALIZATION." Thesis, 2012. http://hdl.handle.net/1974/7628.

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The sandstone-hosted McArthur River Zone 4 U ore body and alteration system, located in the Athabasca Basin, are the focus of a detailed mineralogical and geochemical study aimed at reconstructing its evolution. The oxidation state of Fe in clay alteration from Zone 4 is measured using 57Fe Mössbauer spectroscopy and compared with other mineralized and barren sandstone-hosted alteration systems in the Athabasca Basin. The aim is to ascertain the role of Fe in forming U deposits and determine whether Fe oxidation state in alteration minerals can indicate proximity to mineralization. At Zone 4, early diagenetic kaolin is overprinted by zones of dravite, illite, chlorite, and late kaolinite forming around the P2 fault. Uranium mineralization occurred at ca. 1600 Ma and was triggered by mixing between oxidizing U-bearing basinal fluids and reducing basement-modified basinal fluids, the latter forming when basinal fluids interacted with basement lithologies. Early pre-ore silicification in the lower 200 metres of the Manitou Falls Formation above the ore body created favourable conditions for mineralization by focusing basinal fluids into the reduction site and enhancing ore preservation. However, it obstructed the post-ore migration of radiogenic Pb and U pathfinder elements from the deposit and limited the extent of hydrothermal sudoite alteration in the overlying strata. Sandstone-hosted alteration systems in the Athabasca Basin are commonly surrounded by an outer illite and an inner chlorite zone. Illites have high Fe3+/ƩFe ratios characteristic of formation from oxidizing basinal fluids, whereas, chlorites have lower and more varied Fe3+/ƩFe ratios, reflecting their origin from reducing, Fe2+-bearing basement-derived fluids having undergone variable mixing with oxidizing basinal fluids. Chlorites in mineralized systems where fluid-mixing occurred, such as at McArthur River Zone 4 and Maurice Bay, record higher Fe3+/ƩFe ratios than barren systems where fluid-mixing did not, such as at Wheeler River Zone K and Spring Point. The scarcity of U-bearing basinal fluids available for mixing with Fe2+-bearing basement fluids is a critical geochemical factor precluding mineralization in barren sandstone-hosted systems. The Fe3+/ƩFe ratio of chlorites has potential applications for discriminating barren and mineralized systems and as spatial vectors to ore when coupled with Pb isotope ratios.<br>Thesis (Master, Geological Sciences & Geological Engineering) -- Queen's University, 2012-11-01 14:08:33.51
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Books on the topic "Sandstone-hosted"

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Menzie, W. D. Grade, tonnage and lithologic data for sediment-hosted submarine exhalative Zn-Pb and sandstone-hosted Pb-Zn deposits. U.S. Dept. of the Interior, Geological Survey, 1985.

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L, Mosier Dan, and Geological Survey (U.S.), eds. Grade, tonnage and lithologic data for sediment-hosted submarine exhalative Zn-Pb and sandstone-hosted Pb-Zn deposits. U.S. Dept. of the Interior, Geological Survey, 1985.

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Grade, tonnage and lithologic data for sediment-hosted submarine exhalative Zn-Pb and sandstone-hosted Pb-Zn deposits. U.S. Dept. of the Interior, Geological Survey, 1985.

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Book chapters on the topic "Sandstone-hosted"

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Gongalsky, Bronislav, and Nadezhda Krivolutskaya. "Satellite Sandstone-Hosted Cu-Ag-Fe Deposits in Rocks of the Udokan Supergroup." In Modern Approaches in Solid Earth Sciences. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-03559-4_4.

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Cai, Chunfang, Hongtao Li, and Xiaorong Luo. "Petroleum-related origin for sandstone-hosted uranium deposits in the Dongsheng area, Ordos Basin (China)." In Mineral Deposit Research: Meeting the Global Challenge. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_59.

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Wei, Sanyuan, Mingkuan Qiu, Yuexiang Li, Zhongbo He, Anping Chen, and Kefeng Shen. "Late Mesozoic-Cenozoic tectono-sedimentary evolution and sandstone-hosted uranium mineralization of the Erlian basin." In Mineral Deposit Research: Meeting the Global Challenge. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_84.

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Chi, Guoxiang, Hairuo Qing, Chunji Xue, and Rong Zeng. "An overpressured fluid system associated with the giant sandstone-hosted Jinding Zn-Pb deposit, western Yunnan, China." In Mineral Deposit Research: Meeting the Global Challenge. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_24.

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Zu-yi, Chen, Guo Qing-yin, and Liu Hong-xu. "The evolution of prototype basin and its relation to sandstone-hosted uranium ore-formation in northwestern China." In Mineral Deposit Research: Meeting the Global Challenge. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_63.

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Shao-yang, Han, Hou Hui-qun, and Ke Dan. "Study of methods and techniques of aeroradiometric weak information extraction for sandstone-hosted uranium deposits based on GIS." In Mineral Deposit Research: Meeting the Global Challenge. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27946-6_68.

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Kyser, Kurt, and Michel Cuney. "CHAPTER 9: SANDSTONE-HOSTED URANIUM DEPOSITS." In Recent and Not-so-recent Developments in Uranium Deposits and Implications for Exploration. Mineralogical Association of Canada, 2009. https://doi.org/10.3749/9780921294795.ch09.

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Breit, George N. "Resource Potential for Commodities in Addition to Uranium in Sandstone-Hosted Deposits." In Rare Earth and Critical Elements in Ore Deposits. Society of Economic Geologists, 2016. http://dx.doi.org/10.5382/rev.18.13.

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Leach, David L., and Yucai Song. "Chapter 9 Sediment-Hosted Zinc-Lead and Copper Deposits in China." In Mineral Deposits of China. Society of Economic Geologists, 2019. http://dx.doi.org/10.5382/sp.22.09.

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Abstract Sediment-hosted Zn-Pb and Cu deposits in China include Mississippi Valley-type (MVT) deposits, clastic-dominated (CD) deposits (also historically called sedimentary-exhalative [SEDEX] deposits by some workers), sandstone-hosted (SSH) Zn-Pb deposits, a few large magmatic-related carbonate-replacement deposits (CRD), and volcanic-hosted massive sulfide (VHMS) deposits that have been mistakenly classified as nonmagmatic-related MVT or CD deposits. There are also areas of China that contain important sediment-hosted copper (SHC) deposits. China is exceptionally endowed with MVT deposits with three of the five largest MVT deposits in the world (Huoshaoyun, Jinding, and Changba-Lijiagou). In contrast, China has one CD deposit (Dongshengmiao) in the top 30 CD deposits in the world. The few SHC deposits are small relative to world-class examples. The largest SHC deposits are located in the Yangtze and the North China cratons and hosted in Proterozoic rocks with indications of massive halokinetic features like those observed in the African copper belt. The MVT ores are most abundant in the Yangtze block, Qinling orogen, and the central and eastern Himalayan-Tibetean orogen. There are many other carbonate-hosted deposits in the North China craton and the Cathaysia block that have been widely classified as MVT or sedimentary-exhalative deposits. These are better classified as CRD or skarn deposits based on their proximity to intrusions, alteration assemblages, trace and minor element signatures, and, in some deposits, the presence of skarns minerals. Numerous sediment-hosted Zn-Pb deposits in China have been traditionally classified as SEDEX or syngenetic deposits based on laminated ore textures and stratiform ores that we interpret to reflect deformation and selective replacement processes rather than synsedimentary ore processes. Only two of these sediment-hosted deposits can be unequivocally classified as CD deposits: Dongshengmiao and Tanyaokou in the Langshan area of the North China craton. They are hosted in a siliciclastic-dominated sequence of a Proterozoic passive margin. The location and genesis of many MVT and SHC deposits in China are directly controlled by evaporites and evaporite facies. Evaporite and evaporite facies had an extremely important role in determining the location of the MVT deposits. The second largest sediment-hosted Zn-Pb deposit in China and fifth largest in Asia, Jinding in the Himalayan-Tibetan orogenic belt, is hosted in a hydrocarbon-reduced sulfur reservoir that formed because of salt diapirism. Other large sediment-hosted Zn-Pb MVT deposits in China that are interpreted to be controlled by structures produced by evaporite diapirism are Daliangzi and Tianbaoshan in the western Yangtze block. The largest Zn-Pb deposit in China is the newly discovered oxidized Huoshaoyun Zn-Pb MVT deposit, also in the Himalayan-Tibetan orogenic belt that is hosted in an evaporite-bearing sequence. The third largest Zn-Pb resource in China is at the Changba-Lijiagou deposit and, together with numerous smaller deposits, define a belt of metaevaporites in a carbonate platform sequence of the northern Yangtze platform. Other evaporite-related MVT ores include the Huize deposits that are hosted in a former Carboniferous evaporite-bearing hydrocarbon reservoir and the extensive Sinian dolostone-hosted Zn-Pb deposits that reflect evaporite dissolution breccias in the Yangtze block. The Tarim craton in northwestern China contains the only significant SSH deposit at Uragen. The ore zone lies in the footwall of an evaporative unit that may have served as a hydrocarbon and reduced sulfur trap. Furthermore, the most significant SHC deposits are hosted in Proterozoic rocks in the North China craton and the Yangtze block that contain extensive halokinetic breccias and structures.
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Sun, Z., B. Gao, and G. Wang. "Solute migration during acid in-situ leach mining of sandstone hosted uranium deposits." In Water-Rock Interaction. Taylor & Francis, 2007. http://dx.doi.org/10.1201/noe0415451369.ch290.

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Conference papers on the topic "Sandstone-hosted"

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Farrell, N. J. C., and D. Healy. "Permeability Anisotropy in Sandstone Hosted Normal Faults." In 3rd EAGE International Conference on Fault and Top Seals. EAGE Publications BV, 2012. http://dx.doi.org/10.3997/2214-4609.20143035.

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Wilton, Ted, Jr Chavez, and Samatha Caldwell. "Sandstone-hosted uranium deposits at the Cebolleta Land Grant, Cibola County, New Mexico." In 71st Annual Fall Field Conference. New Mexico Geological Society, 2021. http://dx.doi.org/10.56577/ffc-71.171.

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A. Ross, J., J. Peakall, and G. M. Keevil. "Sandstone Hosted Intrusions - A New Class of Short and Long-term Fluid Pathway." In 74th EAGE Conference and Exhibition incorporating EUROPEC 2012. EAGE Publications BV, 2012. http://dx.doi.org/10.3997/2214-4609.20148700.

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Song, Hao. "Variations and Indication of Stable Isotopes in Different Zones of Sandstone-Hosted Uranium Deposits." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.2432.

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Huang, Yucheng, Qubo Wu, Baoping Qiao, et al. "Seismic random noise attenuation analysis with sparse representation from shallow sandstone-hosted uranium deposits." In Seventh International Conference on Engineering Geophysics, Al Ain, UAE, 16–19 October 2023. Society of Exploration Geophysicists, 2024. http://dx.doi.org/10.1190/iceg2023-081.1.

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Liu, Yuan, and Jun-Hong Zhao. "Constraints of in-situ S-isotopic compositions of pyrite on the genesis of the Bayinqinggeli sandstone-hosted uranium deposit, Ordos Basin, Northern China." In Goldschmidt2023. European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.16305.

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Steinstø, Magnus, Gaute Hånsnar, Benedicte Gjersdal, Trygve Mikal Viga Skretting, Alexey Pavlov, and Fred Florence. "Design and Demonstration of Autonomous Directional Drilling With a Miniature Scale Rig." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-80314.

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Abstract Drillbotics, an international student competition hosted by SPE/DSATS, directed the 2020/2021 competitors to design, build and implement a 1.5″ (3.8cm) hole size, fully autonomous drilling rig capable of intersecting multiple pre-set targets within a rock sample with up to 30-degree inclination and 15-degree azimuth adjustments from the KOP. The Norwegian University of Science and Technology (NTNU) won the competition using a fixed bent Bottom Hole Assembly (BHA) and a simulated mud-motor stator with a rod inside the drillpipe transferring rotational torque from a top drive. The team designed and created a custom drill bit, bi-directional hydraulic swivel, and BHA. Trajectory control was achieved by changing the BHA bend orientation over time, rotating the drillpipe with inputs from a nonlinear Model Predictive Controller (nMPC) following a pre-planned Bezier-curve well path. Capabilities of the rig were demonstrated by drilling a 37-degree inclination well path in 6 minutes in a 60 cm sandstone replica.
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Zhao, Xiaoxi, and Birendra Jha. "Role of Inelasticity in Production-Induced Subsidence and Fault Reactivation in the Groningen Field." In SPE Reservoir Simulation Conference. SPE, 2023. http://dx.doi.org/10.2118/212234-ms.

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Abstract Long-term production of gas from the Groningen field has led to subsidence and seismicity in the region. Most of the prior Groningen modeling studies assumed elastic deformation of the reservoir due to the challenges in modeling poroplasticity in a reservoir with hundreds of faults and decades of production history. Here we quantify the role of inelastic deformation in production-induced subsidence and seismicity in the field via 3D high-resolution multiphysics modeling which couples multiphase flow and elastoplastic deformation in a complex geologic system made of claystone overburden, carboniferous underburden, and the gas-bearing sandstone reservoir compartmentalized with 100+ faults. We drive the model with four decades of historical production, spanning the period of induced seismicity, and two decades of future production under gas injection-enhanced recovery. We calibrate the model using the available pressure and subsidence data and analyze compartmentalized depletion and deformation due to spatially varying production and fault distribution. We analyze stress and strain in the caprock-reservoir depth interval to elucidate the role of inelasticity. We use the evolution in shear and normal tractions on seismogenic faults that hosted 1991-2012 seismicity to quantify the evolution in Coulomb stress and geomechanical stability of the faults.
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Kakonitis, Panos, Loizos Papaloizou, Elias Gravanis, and Ernestos Sarris. "Modeling Erosion in Hollow Cylinder Tests: The Case of Low Pressure Under Variable Confining Stress." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0169.

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ABSTRACT: Modelling the erosional behavior of rock cores in hollow cylinder tests is a formidable task because it involves coupled hydro-mechanical processes. In a recent work of the authors, we proposed semi-analytical hydro-mechanical framework for modelling erosion at laboratory scale through the hollow cylinder test. The model was based on the kinematic formulation of classic hydro-mechanical models also known as volumetric sand production models. The original formulation was constructed to include variable confining stress and flow rate conditions. In this new formulation, a power law dependency of the erosion coefficient λ with stress is incorporated to investigate its dependency on the variable external radial stress boundary condition reflected on the sand production curve. This is a significant update with respect to the previous formulation that assumed a constant sand production coefficient. Results show an improved performance with respect to experimental results. This model can be used to systematically calibrate sand production coefficients for different types of rocks. 1. INTRODUCTION Sand production is a phenomenon where solid (predominantly sand) particles are produced together with hydrocarbons during production operations. This sand influx to the wellbore is responsible for causing various operational and mechanical issues within the wellbore and surface facilities. To avoid such issues, an appropriate design of bottom hole completion technique remains a formidable task especially when the reservoir rock is an unconsolidated sandstone. Completion engineers are requested to choose between open hole or cased, cemented and perforated completions but when opting for communication between the well and the formation may cause further formation stability issues albeit manageable if gravel packed. The main reason for this dilemma is the mechanically weak behavior of sandstones especially if they are unconsolidated. Actually, significant percentage of the world' s hydrocarbon reservoirs are hosted in unconsolidated sandstone rocks which might present high risk of sand production. Once sand production onsets, cleaning operations cause time delays and costly investments due to time consuming and expensive workovers. To avoid these delays, operators are forced to restrict production rates, hence reducing the drawdown to cut-down formation stresses which are now believed to be one of the root-causes of sand production after reaching rock failure. Kakonitis et al. (2023a), Fattahpour et al. (2012), Deng et al. (2019), Nouri et al. (2007).
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Steinstø, Magnus, Gaute Hånsnar, Benedicte Gjersdal, Alexey Pavlov, and Fred Florence. "Autonomous Directional Drilling with a Miniature-Scale Research Rig." In SPE Norway Subsurface Conference. SPE, 2022. http://dx.doi.org/10.2118/209537-ms.

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Abstract Drillbotics is an international student competition hosted by SPE/DSATS. The 2020/2021 competition challenged student teams to design, build and implement a 1.5″ (3.8cm) hole size, fully autonomous directional drilling rig. The well path had to intersect multiple pre-set targets in a rock sample with up to 30-degree inclination and 15-degree azimuth adjustments from the Kickoff Point (KOP). The Norwegian University of Science and Technology (NTNU) won the competition using a fixed bend Bottom Hole Assembly (BHA) and a simulated mud-motor stator with a rod inside the drill pipe transferring rotational torque from a top drive. The team designed and created a bi-directional hydraulic swivel, BHA, and a custom drill bit. Steering was achieved by changing the fixed bend BHA orientation by rotating the drill pipe. A nonlinear Model Predictive Controller (nMPC) was used to allow long-term trajectory control planning following a pre-planned Bezier-curve well path. Position estimations are derived from movement over time in the direction of the current BHA orientation estimate. Orientation is estimated from a combination of physics-based system model predictions and closed-loop BHA orientation surveys from downhole accelerometer data merged by extended Kalman filter observes. Mechanical capabilities of the rig were demonstrated by drilling a 37-degree inclination well path in 6 minutes in a 60 cm sandstone replica. nMPC trajectory control experiments indicate it may be a viable option for fixed bend BHA trajectory control. However, limited testing makes current results inconclusive if the approach can be used for a general well path with major deviations between the fixed bend angle and well path inclination.
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Reports on the topic "Sandstone-hosted"

1

Lavoie, D., V. Tremblay, and C. Rivard. Sandstone composition and diagenesis of the Paskapoo Formation and their significance for shallow groundwater aquifer in the Fox Creek area, west-central Alberta. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331923.

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The shallow aquifer in the Fox Creek area is hosted by the Paleocene Paskapoo Formation. The formation consists of fluvial deposits with channel-filled high-energy sandstone cutting through fine-grained, low energy overbank sediments. Three internal members are recognized, these members define three hydrostratigraphic units (two aquifers versus one aquitard). In fall 2022, three boreholes were drilled and cored. The succession is slightly dominated by sandstone with subordinate fine-grained sediments and thin coal intervals. The calcareous to non-calcareous sandstone is either tight and well compacted or porous, friable to unconsolidated. The litharenite is composed of quartz, various types of rock fragments, chert, and feldspars. Detrital carbonates can be abundant. The post-sedimentation history of the sandstone recorded cementation and dissolution events from near surface, through shallow burial and late tectonic exhumation. The events include early clay coatings on grains, dissolution of metastable minerals, cementation from calcite, kaolinite and minor chlorite and late near surface fault-controlled freshwater circulation and dissolution. The late event resulted in friable to unconsolidated sandstone intervals.
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2

Mills, Stephanie E., and Bear Jordan. Uranium and Vanadium Resources of Utah: An Update in the Era of Critical Minerals and Carbon Neutrality. Utah Geological Survey, 2021. http://dx.doi.org/10.34191/ofr-735.

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Utah is the second largest vanadium producing state and the third largest uranium producing state in the United States. Carnotite, a primary ore mineral for both vanadium and uranium, was first discovered and used by Native Americans as a source of pigment in the Colorado Plateau hysiographic province of eastern Utah. Radioactive deposits have been ommercially mined in Utah since about 1900, starting with radium, followed by vanadium, and thenuranium. In 1952, the discovery of the Mi Vida mine in Utah’s Lisbon Valley mining district in San Juan County kicked off a uranium exploration rush across the Colorado Plateau. As a result, the United States dominated the global uranium market from the early 1950s to late 1970s. In the modern mining era, Utah is an important contributor to the domestic uranium and vanadium markets with the only operating conventional uranium-vanadium mill in the country, multiple uranium-vanadium mines on standby, and active uranium-vanadium exploration. Overall, Utah has produced an estimated 122 million lbs U3O8 and 136 million lbs V2O5 since 1904. Most of this production has been from the sandstone-hosted deposits of the Paradox Basin, with minor production from volcanogenic deposits and as byproducts from other operations across the state
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