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Dissertations / Theses on the topic 'Deposits of oil'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Grimley, Thomas Patrick. "Modeling and simulation of oil transport and transformation for studying piston deposits." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50580.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.<br>Includes bibliographical references (leaves 51-54).<br>The formation of carbonaceous engine deposits is a long standing and well documented phenomenon limiting the lifetime of diesel engines. Carbon remnants coat the surfaces of the combustion chamber, piston, and valves. As piston deposits thicken, they increase the risk of a power cylinder seizure. More restrictive emission standards require careful power cylinder design to control piston deposits, specifically in the top land and top ring groove.

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2

Christidis, Konstantinos. "Characterisation and monitoring of mineral deposits in down-hole petroleum pipelines." Thesis, Robert Gordon University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325400.

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3

Jarrar, Ahmed Ali. "Comparison of an essential oil mouth rinse and chlorhexidine on 4-day interproximal plaque regrowth." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_1346_1210745930.

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<p>Dental plaque is the most important etiological factor of periodontal diseases. Mechanical plaque control is the most effective way in preventing periodontal diseases. Chemical plaque control methods (such as mouthrinses) have been recommended to be used because of some drawbacks in the mechanical methods in some areas of the dentition (such as interproximal areas). But are these mouthrinses really effective in those areas? The aim of this study was to compare the effectiveness of Essential Oils mouthrinse (Listerine) on plaque formation in interproximal areas with Chlorhexidine and Sterile

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4

Diaz, Bejarano Emilio. "A reaction engineering approach to modelling of crude oil fouling deposits : analysis, monitoring and cleaning." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/61660.

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Refineries are amongst the largest industrial energy users. The preheat trains of their crude distillation units, extensive heat exchanger networks, are key facilities for energy efficiency. Fouling deposition on heat transfer surfaces leads to substantial energy losses, fuel consumption, operating difficulties, CO2 emissions and even throughput losses. Modelling of crude oil fouling deposits has been traditionally limited to thermal resistances. However, consideration of the local change in deposit thickness and the evolution of its properties due to ageing or changes in composition is import

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5

Bandreddy, Naga Abhiram. "Defining Correlation Between Radon, Uranium Deposits, and Oil and Gas Wells Using GIS Regression Methods." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1564687565423414.

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6

Pillar, Rachel Joanne, and rachel pillar@flinders edu au. "The Influence of Rolling Oil Decomposition Deposits on the Quality of 55Al-43.4Zn-1.6Si Alloy Coatings." Flinders University. School of Chemistry, Physics and Earth Sciences, 2007. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20080108.132120.

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Uncoated defects in hot dip metal-coated steel products result from non-wetting of the steel surface by the molten alloy. The occurrence of uncoated defects is highly detrimental to product quality and production efficiency; uncoated defects compromise the appearance and anti-corrosion performance of hot dip metal-coated steel products and causes time delays in the application of subsequent surface treatments. Although many studies have been directed towards evaluating the effect of steel pre-heat temperature and oxidation on the formation of uncoated defects, fewer investigations have analyse

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7

Salmazo, Eduardo 1980. "Modelagem matemática da evolução de domos salinos sua influência na perfuração de poços de petróleo." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263224.

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Orientador: José Ricardo Pelaquim Mendes<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica e Instituto de Geociências<br>Made available in DSpace on 2018-08-22T11:39:24Z (GMT). No. of bitstreams: 1 Salmazo_Eduardo_M.pdf: 7818535 bytes, checksum: a2f7369fd589c6f6e85ce6c997e8c112 (MD5) Previous issue date: 2013<br>Resumo: Neste trabalho discute-se os desafios associados à atividade de perfuração de poços de petróleo através de formações afetadas pela presença de domos salinos. Domos salinos podem induzir grandes tensões nas formações subjacentes e

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8

Hubbard, Stephen Michial. "Sedimentology and ichnology of brackish water deposits in the Bluesky Formation and Ostracode Zone, Peace River Oil Sands, Alberta." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0017/MQ47042.pdf.

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9

Haas, Ashley Marie. "UTILIZING DEGREE OF PYRITIZATION AND FRAMBOIDAL PYRITE TO COMPARELAKE DEPOSITS FROM THE MODERN SLUICE POND WITH THE ANCIENTMARCELLUS FORMATION." Kent State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=kent1618750203346984.

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10

Jadim, Ramsey. "On the estrablishment of effective condition monitoring parameters for copper corrosion problems in mineral oil-filled electrical transformers." Licentiate thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-99899.

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The power transformer is a critical equipment in which the protection process is essential for modern societies where continuous electric power supplies are required. Copper corrosion problems due to the formation of sulfur deposits on the copper windings of mineral oil-filled power transformers are considered a major issue that can lead to sudden failures, and in some cases, to costly fire and explosion accidents in the power plants. These kinds of problems are still being reported regardless of available condition monitoring (CM) parameters applied in power transformers' maintenance strategy

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11

Baldwin, Patrick W. "LITHOSTRATIGRAPHIC AND GEOCHEMICAL CHARACTERIZATION OF THE UPPER PENNSYLVANIAN ‘WOLFCAMP D’ SHALE, MIDLAND BASIN (USA): IMPLICATIONS FOR PALEOENVIRONMENTS AND UNCONVENTIONAL PETROLEUM RESERVIORS." UKnowledge, 2016. http://uknowledge.uky.edu/ees_etds/35.

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An integrated stratigraphic analysis of a ~350 ft drill core from Upton County (Texas) has revealed pervasive variability of several key siliciclastic and carbonate lithofacies in vertical section, where organic-rich siliceous mudrock beds alternate with aluminum-rich mudrocks and calcareous gravity flow deposits. Sediment chemistry, especially major and trace elements derived from x-ray fluorescence, captures this variability with high sensitivity. The high frequency chemostratigraphic variability appears to be cyclic, and it is interpreted to represent the first example of deep-water Late Pe

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12

Altun, Naci Emre. "Beneficiation Of Himmetoglu And Beypazari Oil Shales By Flotation And Their Thermal Characterization As An Energy Source." Phd thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12606990/index.pdf.

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Processing of Bolu-Himmetoglu (Type I Kerogen) and Ankara-Beypazari (Type II Kerogen) oil shales by flotation techniques were investigated for achieving clean solid fuel substitutes. Materials characterization was done through mineralogical, XRD and FTIR analyses. Flotation responses of the samples were tested with non-ionizing and ionizing collectors of cationic and anionic types. The effects of the collector dosage and pulp pH on cleaning were determined. Other important flotation parameters, conditioning time, flotation time, pulp density, particle size and frother dosage were encountered u

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13

Gauw, Daniel Siqueira de. "Estudo integrado de an?logo a reservat?rios petrol?feros fluviais: caracteriza??o, parametriza??o e modelagem tridimensional de dep?sitos recentes do Rio Assu (Rio Grande do Norte/Brasil)." Universidade Federal do Rio Grande do Norte, 2008. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18743.

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Made available in DSpace on 2015-03-13T17:08:13Z (GMT). No. of bitstreams: 1 DanielSG_Capa_ate_pag62.pdf: 4484256 bytes, checksum: d74828e0a4e19ed96a1cddf2063832fb (MD5) Previous issue date: 2008-08-17<br>This work shows a integrated study of modern analog to fluvial reservoirs of A?u Formation (Unit 3). The modern analog studied has been Assu River located in the same named city, Rio Grande do Norte State, Northeast of Brazil. It has been developed a new methodology to parameterizating the fluvial geological bodies by GPR profile (by central frequency antennas of 50, 100 a

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14

Bergkvist, Martin. "Riskanalys av brand i avgassytem som avser dieselmotorer som opererar med låg belastning på fartyg." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-90338.

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Med skenade bunkerkostnader och överdimensionerade motorinstallationer har allt fler handelsfartyg börjat operera under benämningen slow steaming, vilket innebär att sotbränderna har ökat i avgaspannor/ekonomiser och i en del extrema fall har branden övergått till en vätgasbrand. Arbetet utreder främst dieselmotorer som använder restoljor som bränsle och opererar med en låg motorbelastning. Syftet med undersökningen var att se vad som leder till att oförbränt bränsle och cylinderolja ackumuleras i avgassystem samt beskriva vilka åtgärder som kan göras för att eliminera risken för att en brand

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15

PEREIRA, Ivna Daniele Souza. "Estudos de novas jazidas de Argilas Bentoníticas do Estado da Paraíba, visando seu uso em fluidos de perfuração de poços de petróleo." Universidade Federal de Campina Grande, 2014. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/332.

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Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-04-04T19:50:45Z No. of bitstreams: 1 IVNA DANIELE SOUZA PEREIRA - DISSERTAÇÃO PPG-CEMat 2014..pdf: 2113912 bytes, checksum: e7cd84f19623986d5ca5b0df7875190e (MD5)<br>Made available in DSpace on 2018-04-04T19:50:45Z (GMT). No. of bitstreams: 1 IVNA DANIELE SOUZA PEREIRA - DISSERTAÇÃO PPG-CEMat 2014..pdf: 2113912 bytes, checksum: e7cd84f19623986d5ca5b0df7875190e (MD5) Previous issue date: 2014-08-29<br>Capes<br>No Estado da Paraíba há grandes ocorrências de minerais não metálicos principalmente de argilas bentoniticas, ba

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16

Pope, Graham John. "An Application of Sequence Stratigraphy in Modelling Oil Yield Distribution: The Stuart Oil Shale Deposit, Queensland, Australia." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16145/.

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The Stuart Oil Shale Deposit is a major oil shale resource located near Gladstone on the central Queensland coast. It contains an estimated 3.0 billion barrels of oil in place in 5.6 billion tonnes of shale. Commissioning of a plant capable of producing 4,500 barrels per day has recently commenced. The shale is preserved in Tertiary age sediments of The Narrows Beds in the southern part of The Narrows Graben. The oil shale sequence consists of repetitive cycles composed of oil shale, claystone and lesser carbonaceous oil shale in the 400 metre thick Rundle Formation. The formation is the

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17

Li, Bocheng. "Influence of Petroleum Deposit Geometry on Long Term Persistence of Residual Crude Oil." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/54007.

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Following the DWH oil spill event, crude oil reaching the shoreline of Gulf of Mexico produced petroleum oil deposit with a range of distinct geometries, including sphere tar balls and horizontal tar sheets. Numerical models were developed based on the Deep Water Horizon oil spill conditions to evaluate the influence of deposit geometry on long term persistence of residual NAPL oil. Two extreme deposit geometries were modeled in this study: the horizontal tar sheet and the spherical tar ball. Both two-dimensional modeling approach and three-dimensional modeling approach were applied to compare

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18

McGrogan, Sean (Sean William). "Modeling and simulation of oil transport for studying piston deposit formation in IC engines." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/43710.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.<br>Officially submitted thesis was in in electronic form.<br>Includes bibliographical references (p. 129-134).<br>Carbonaceous deposits have long plagued the internal combustion engine, yet a fundamental comprehension of their underlying causes remains to be developed. In particular, piston land deposits can bring about an array of problems; for example, once a thickness threshold is crossed, the engine's reliability is threatened by an elevated possibility of seizure. As tightening emissions regulatio

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19

Tomlinson, Angela. "Physico-chemical characterisation and molecular modelling study of lubricant dispersants." Thesis, University of Surrey, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388990.

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20

Singh, Gargi. "Influence of Petroleum Deposit Geometry on Local Gradient of Electron Acceptors and Microbial Catabolic Potential." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/31431.

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A field survey was conducted following the Deepwater Horizon blowout and it was noted that resulting coastal petroleum deposits possessed distinct geometries, ranging from small tar balls to expansive horizontal oil sheets. A laboratory study evaluated the effect of oil deposit geometry on localized gradients of electron acceptors and microbial community composition, factors that are critical to accurately estimating biodegradation rates. One-dimensional top-flow sand columns with 12-hour simulated tidal cycles compared two contrasting geometries (isolated tar â ballsâ versus horizontal â

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21

Kingston, David Michael Carleton University Dissertation Geology. "Geology and geochemistry of the Owl Creek gold deposit, Timmins, Ontario." Ottawa, 1987.

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22

Colantuono, María Rosa, Gabriela Pérez, and Graciela Vives. "El patrimonio material y espiritual en el proceso de formación de dos provincias de la Patagonia argentina." Pontificia Universidad Católica del Perú. Centro de Investigación en Geografía Aplicada, 2015. http://repositorio.pucp.edu.pe/index/handle/123456789/119263.

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The provinces of Río Negro and Neuquén are located in the northern Argentinean Patagonia. One of them, Neuquén, is at the foothills of the Andes; meanwhile, the other extends from this mountain chain to the Atlantic Ocean. In spite of their vicinity, their material and spiritual patrimonies are different enough to give each their own identity. At Neuquén, the richest petroleum deposits of Argentina are found, which provide most of the oil and gasto the country, giving a good share to Neuquén of the revenues from taxes collected. Furthermore, Neuquén also has other means for its economy based o

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23

Williams, James Philip. "Small mammal deposits in archaeology : a taphonomic investigation of Tyto alba (barn owl) nesting and roosting sites." Thesis, University of Sheffield, 2001. http://etheses.whiterose.ac.uk/10250/.

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Small mammals have often been utilised as indicators of past environments. Before palaeoecological assessments can be made, investigations into the origin and mode of deposition are carried out. Many small mammal accumulations are predator-derived, and in order to take account of predatory bias in these deposits, it is necessary to identify the predator. Several methodologies have catalogued patterns of bone modification from dietary waste of modern predators, for comparison with taphonomic features found on archaeological assemblages of small mammals. The majority of this research has concent

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24

Dizayi, Buland Ibraheem Azeez. "Fuel spray, engine deposit and real driving emissions analysis of heavy duty trucks using used cooking oil as a fuel." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/13411/.

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The current project represents the first attempt to test the environmental performance of the direct utilisation of purified used cooking oil as a fuel in a heavy goods vehicle under real world driving conditions. The properties of the used cooking oil were different from those of petroleum diesel (PD) standards however, its heat value, carbon footprint reduction potential and low cost were the key incentives driving it’s use as a fuel. The current research was a collaborative project between Convert to Green (C2G), the fuel provider, the United Biscuits Midlands Distribution Centre, the heavy

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25

Crerar, Erin Elizabeth. "Sedimentology and stratigraphic evolution of a tidally influenced marginal-marine complex: The Lower Cretaceous McMurray Formation, Athabasca oil sands deposit, northeastern Alberta." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26464.

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Within the Lewis study area, McMurray Formation strata comprise 4 facies associations that form a depositional continuum of braided-fluvial (FA1), tidally-influenced braided- to low-accommodation meandering-fluvial and meandering-tidal channel-fills (FA2), associated overbank (FA3), and open-estuarine tidal flat deposits (FA4). The primary reservoir occurs in transgressive FA2 deposits. Lower-FA2 channels incise older water-wet FA1sand and consist of medium to locally-coarse, bitumen-saturated sand with rare to locally common pin-stripe laminated and/or 1--5 cm thick mud beds. Channels were in

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26

Charlebois, Lawrence E. "On the flow and beaching behaviour of sub-aerially deposited, polymer-flocculated oil sands tailings : a conceptual and energy-based model." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43761.

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This thesis presents the background, observations, and analyses performed during an investigation of the flocculated mature fine tailings (MFT) technology at the Suncor Energy Oil Sands Tailings Reduction Operation (TRO) in Fort McMurray, Alberta, Canada. The sub-aerial flow and deposition of flocculated MFT on a sloping beach can be described in the context of a rheology-energy conceptual model. The conceptual model, or flow map, can provide deposition cell designers and operators with a useful framework for managing beach development in a sub-aerial deposition cell. Observations during fie

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27

Zhu, Ling. "Compulsory Insurance and Compensation for Bunker Oil Pollution Damage /." Berlin : Springer Berlin, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2853667&prov=M&dok_var=1&dok_ext=htm.

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28

Provost, Elise. "Études thermodynamique et structurale de deux n-alcanes lourds (n-hexacosane et n-octacosane) et de leurs mélanges dans des solvants organiques contenant sept atomes de carbone." Vandoeuvre-les-Nancy, INPL, 1997. http://www.theses.fr/1997INPL069N.

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Les risques de formation de dépôts lors de l'exploitation des bruts pétroliers paraffiniques augmentent les couts de production. Ces dépôts sont principalement constitués de n-alcanes. Des études sont donc mises en œuvre, en particulier dans notre laboratoire pour analyser ce phénomène. Dans notre travail, nous avons tout d'abord mesuré les propriétés thermodynamiques et structurales des deux n-alcanes (n-hexacosane et n-octacosane). Nous avons ensuite déterminé et calculé le diagramme (n-hexacosane : n-octacosane) dans sa partie centrale en utilisant des expressions de margules à deux paramèt

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29

García, Romero María. "Genese und Entwicklung des französischen Nominalsuffixes -oir(e) /." Marburg : Tectum, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2865483&prov=M&dokv̲ar=1&doke̲xt=htm.

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García, Romero María. "Genese und Entwicklung des französischen Nominalsuffixes -oir(e)." Marburg Tectum-Verl, 2004. http://deposit.d-nb.de/cgi-bin/dokserv?id=2865483&prov=M&dok_var=1&dok_ext=htm.

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31

Deschamps, Pascal. "Étude de la cristallisation des paraffines dans les pétroles bruts." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10274.

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La cristallisation des paraffines presentes dans le petrole brut, au cours des differentes etapes necessaires a son extraction et a sa valorisation, constitue un probleme constant pouvant deboucher sur des dysfonctionnements majeurs des installations. La forte croissance du taux de brut paraffinique produit dans le monde a conduit les compagnies petrolieres et les instituts de recherche associes a developper des programmes d'etude visant a mieux comprendre ce phenomene, et deduire ainsi divers modes d'actions limitant ses effets nefastes, comme la formation de depots ou la gelification. L'orie

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32

Yalaoui, Imane. "Caractérisation multi-échelle et modélisation de la formation de dépôts paraffiniques dans les pipelines." Thesis, Sorbonne université, 2020. http://www.theses.fr/2020SORUS063.

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La formation de dépôts paraffiniques dans les pipelines, au cours du transport et de la production, est l’une des principales préoccupations de l’industrie pétrolière. Afin de mieux comprendre la formation de dépôt et d’améliorer les techniques de remédiation existantes, il est nécessaire de connaître la structuration multi-échelle des bruts en volume et sous écoulement. Dans un premier temps, afin de mieux décrire la structuration multi-échelle des huiles paraffiniques en volume, une stratégie multimodale combinant la microscopie optique, la diffusion de Rayons-X et la RMN bas champs a été pr

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"Biogeochemical investigation of centrifuged fine tailings deposits at an oil sands mine in Northern Alberta, Canada." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-09-2334.

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Centrifuged fine tailings (CFT) technology was developed to reduce volumes of fluid fine tailings (FFT) stored in tailings ponds at oil sands mines. Increasing FFT inventories in tailings ponds results from slow settlement of clay minerals suspended in oil sands process-affected water (OSPW). High sodium (Na) concentrations in OSPW increase the electrical double layer (EDL) thickness at clay-mineral surfaces, which hinders aggregation and, therefore, settlement. Production of CFT involves dredging FFT from tailings ponds, amending with polyacrylamide and gypsum, and decanter centrifuging. This

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Pillar, Rachel Joanne. "The influence of rolling oil decomposition deposits on the quality of 55A1-43.3Zn-1.6Si alloy coatings." 2007. http://catalogue.flinders.edu.au/local/adt/public/adt-SFU20080108.132120/index.html.

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35

Χάβεζ, Ιωσήφ. "Ανάπτυξη σύνθετων εναποθέσεων για την βελτίωση μηχανικών ιδιοτήτων κοκκώδων υλικών". Thesis, 2006. http://nemertes.lis.upatras.gr/jspui/handle/10889/1450.

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Ένα σημαντικό πρόβλημα που αντιμετωπίζουν οι εταιρείες άντλησης πετρελαίου στα φρεάτια εξόρυξης είναι η συμπαραγωγή άμμου μαζί με το πετρέλαιο. Το φαινόμενο παρατηρείται κυρίως σε περιοχές άντλησης όπου το πετρέλαιο βρίσκεται εγκλωβισμένο σε αμμώδεις περιοχές (ψαμμιτικοί ταμιευτήρες). Το αντλούμενο πετρέλαιο συμπαρασύρει μαζί του κόκκους άμμου, οι οποίοι εισχωρούν στον μηχανολογικό εξοπλισμό της εξόρυξης προκαλώντας βλάβες. Αυτό έχει ως αποτέλεσμα την επιβράδυνση της παραγωγής πετρελαίου καθώς επίσης και την αύξηση του κόστους. Σε μερικές περιπτώσεις έχουν καταγραφεί και φαινόμενα κατάρρευσης

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