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Упит dcterms_subject_txt:oil and gas

2461 items

  • Merenje pritiska u bušotinskom cevovodu

    Ratko Matija (2024)
    Merenje pritiska ima veliki značaj u naftovodima i gasovodima. U ovom završnom radu analizirane su različite metode merenja pritiska , kao što su merenje pritiska manometrima sa tečnostima, kapacitivnim manometrima, električnim manometrima nekim drugim. Objašnjena je kalibracija senzora pritiska koja u velikoj meri utiče na tačnost merenja. Navedeni su i objašnjeni elementi cevovoda i u vezi s tim pad pritiska, čije je merenje tema ovog završnog rada.
    merenje pritiska, manometri, kalibracija, elementi cevovoda, pad pritiska
    ... tečnosti ı gasove, ali za razliku od čvrstih tela, gde se pritisak Javlja samo u smeru delovanja sile normalne na podlogu, kroz tečnosti ı gasove se pritisak prenosi u svim pravcima. Uzrok za ovakvo prenošenje pritiska kroz tečnosti ı gasove, leži u činjenici da se molekuli tečnosti i gasova mogu ...
    ... 4- pomoćna kompresorska stanica, 5- stanica za distribuciju gasa, 6- cevovod sa armaturom, 7- prelaz preko reke, 8- rezervoar za gas, 9- odvodni cevovod Magistralni gasovod-mreža visokog pritiska (50-100 bar). Služi za transport gasa unutar jedne zemlje ili većeg područja unutar zemlje. Najčešće ...
    ... zagrevanje sirove nafte ukoliko je to 26 potrebno. Za razliku od naftovoda, energiju za dalje kretanje, gas u gasovodima dobija od kompresorskih stanica. Kompresorske stanice komprimuju gas, pri čemu mu smanjuju zapreminu, a povećavaju pritisak neophodan za dalji protok. ?@ gf@ - 6 d bq b MIN ...

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost

  • Ventex: an expert system for mine ventilation systems analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    roblems relating to mine ventilation systems analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer technology these methods were incorporated as numerical routes in software packages, such as the mine ...
    expert system, mine ventilation
    ... parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, �re risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer ...
    ... requires a high level of expert knowledge and experience. This knowledge pertains to the heuristics experts use when they apply numerical methods and it takes a symbolic form, very often that of rules, being thus declarative in its character. Hence, both procedural and declarative knowledge are needed for ...
    ... incorporating, both procedural and declarative knowledge, that offers the possibility for a more profound exploitation of the available software at an expert level. The paper presents the global strategy of mine ventilation system analysis used in the VENTEX system and its formalisation using a modi�cation ...

  • Remontni radovi u bušotini sa dubinskom pumpom

    Jovana Milošević (2024)
    Remontni i stimulativni radovi u naftnom inženjerstvu su radovi koji se primenjuju na bušotinama koje su već u proizvodnji ili potencijalno proizvodnim bušotinama, i u zavisnosti od toga imaju različitu svrhu. Remontni radovi predstavljaju sve radove koji su ograničeni na kanal bušotine, dok se stimulativni radovi odnose pribušotinsku zonu.U prvom slučaju remontni i stimulativni radovi kod proizvodnih bušotina služe za otklanjanje problema i povećavanje proizvodnje bušotine. Dok u drugom slučaju, kod potencijalnih bušotina su ovi radovi namenjeni završnim obradama ...
    remontni radovi, hemijska obrada, Gravel Pack, alat za instrumentaciju, puške za perforaciju
    ... AONG: https://www.arab-oil- naturalgas.com/perforating-oil-and-gas-wells/ Perforating Oil and Gas Wells. (2020). PETROBLOGWEB. (2016). Preuzeto sa PETROLEUM ENGINEERING, SAND PRODUCTION: https://petroblogweb.wordpress.com/2016/09/03/overview-of-standalone-screensliner- sand-exclusion-options/ ...
    ... perforation technology: Status and prospects. (2014). Preuzeto sa ResearchGate: https://www.researchgate.net/publication/270914514_Oil_well_perforation_technology_St atus_and_prospects PAŠIĆ, D. D. TEHNIKA IZRADE BUŠOTINA 1, BUŠAĆA POSTROJENJA. Perforating Oil and Gas Wells. (n.d.). Preuzeto sa AONG: ...
    ... 2020) Tipovi puška za napucavaje: • Mlazna puška • Puška s mecima • Hidraulični mlazni perforator • Mehanički perforator (Perforating Oil and Gas Wells, 2020) 14 Konvencionalni način napucavanja vrši se primenom eeksplozivnih kumulativnih punjenja i pušaka sa mecima. Konvencionalni način ...

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... explained/coal/use-of-coal.php [8] European Commission, Coal region in transifion, 2022, available · at: https://energy.ec.europa.eu/topics/oil-gas-and-coal/eu-coal-regions/coal-regions-transition_en [9] Elektroprivreda Srbije, Production capacities, 2023., available at: https://www.eps.rs/l ...
    ... production, transformation, and consumption of electricity. Total global energy-related greenhouse gas emissions rise by about 1% to a record high of 41.3 Gt CO»>eq. CO» emissions from energy-burning plants and the industrial sector accounted for 89% of greenhouse gas emissions in 2022. In particular ...
    ... sector and buildings [1, 2|. The largest absolute sectoral increase in emissions in 2022 was in the clectricity and heat generation sector. Emissions in the electricity and heat generation sector increased by 1.8% (i.e., 261 Mt), reaching the highest level of 14.6 Gt. The shift from gas to coal ...

  • Analysis of the exhaust emissions inventory from auxiliary mining machines

    Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)
    Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...
    emissions, mining, auxiliary machines

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation
    ... resources and the exploitation of oil and gas), which differ to such an extent that they justify the introduction of additional markers. Sub-domain markers would be associated to a domain marker, so for example, the þMiningþSurface marker would indicate the terms belonging to the domain mining and sub-domain ...
    ... anemometar gasa (gas anemometer), deponijski gas (landfill gas), fluidizaciju lignite (lignite fluidization), injektiranja gasa (gas injection), kop boksita (bauxite mine), otkopavanje lignita (digging lignite), poduzorak šljunka (gravel sub-sample), površinski kop lignite (lignite open pit) and površinski ...
    ... Shaft, hallway, rise heading, dip heading þMinProcess Crushing, flotation, concentration þPetroleum Oil, gas, well, pipeline Semantic þMinStatus Active mine, inactive mine, closed mine þOre Coal, oil, gas þActivity Mine design, mineral resource exploitation, mine ventilation þObject Shaft, crushing plant ...

  • Одређивање оптималних параметара рада бушотина у повременом гаслифту

    Радослава Јованчевић (2024)
    Гаслифт представља механичку методу производње при коме се производна бушотина снабдева гасом под високим притиском, а његова притисна енергија се користи како би се подржао еруптивни рад бушотине или након еруптивног рада, у циљу истискивања заосталог флуида. Два основна типа гаслифта су повремени и континуални гаслифт. У овом раду је детаљније описана метода повременог гаслифт система. Одређивање оптималне количине гаса који се утискује и расподела ограничене количине гаса на групу бушотина представља битан део пројектовања сваког гаслифт система. Главни ...
    гаслифт, повремени гаслифт, пројектовање, производња, оптимизација
    ... of Petroleum Science and Engineering 8. Rashid F., 2017. Gas Lift System 9. Rashid K., 2010. Opfimal Allocation Procedure for Gas-Lift Optimization 10. Schlumberger, 1999. Gas Lift Design and Technology 11. Szilas, A. P., 1975. Production and transport of oil and gas 12.IIprHoropan II.M. ...
    ... 2022. Gas-lift wells optimization at the oil field "K" 3. Elhaddad, NE.,2015. New model for achieving optimum production at Amal oilfield, JokTopcka mucepranuja, PynapcKo-reomomnku (aky-arerT, Beorpajt 4. Khamehchi E., Mahdiani M. R., Gas Allocation Optimization Methods in Artificial Gas Lift ...
    ... Fundamentals of gas lift engineering 6. Nishikiori N., Redner. R. A., Doty D. R., Schmidt Z., 1989. An Improved Method Jor Gas Lift Allocation Optimization 7. Santos O. G., Bordalo S. N., Alhanati F. J., 2001. Study of the dynamic, optimization and selection of intermittent gas-lift methods - ...

  • Multiphase evolution of fluids in the Rudnik hydrothermal-skarn deposit (Serbia): new constraints from study of quartz-hosted fluid inclusions

    Stefan Petrović, Ronald J. Bakker, Vladica Cvetković, Rade Jelenković (2024)
    This study presents and discusses first detailed petrographic, microthermometric and Raman spectroscopic data from quartzhosted fluid inclusions at Rudnik Zn-Pb-Cu-Ag skarn deposit (Serbia) and combines them with the information on skarnand ore paragenesis. Three periods in the metamorphic-hydrothermal history of the deposit are recognized: 1) the pre-ore prograde skarn period when garnet-clinopyroxene skarns formed, 2) the syn-ore period that encompasses a retrograde stage marked by epidote and zoisite and a quartz-sulfide stage characterized by quartz, pyrrhotite, sphalerite, galena and ...
    skarnovska ležišta, rudnik, fludine inkluzije, srpska kenozojska magmatska provincija, Zapadno Tetisjki metalogenetski pojas
    ... inclusions (FI). Two-phase FI of high- (Group A) and moderate salinity (Group B) are found in quartz cores and homogenized at 380—390 "C (mode) and 370—380 "C (mode), respectively. Group A FI consists of H,O-NaCI liquids and CO,-CH, gas mixtures and likely represents the original fluid composition ...
    ... calcite and mica (Fig. Še, f). The vapour-rich inclusions of group C contain a gas mixture of CO», CHy and HoS (Fig. 8c, d). Sample AZ are enriched in CH, (up to 13 mol%) in addition to HSS (up to 10 mol%), whereas samples PR and A2 reveal lower con- centrations of CH, (up to 4 mo1%) and HoS (up ...
    ... 5 mol% CHu, 5 mol% NaCI) may unmix at 350 *C and 62 MPa by producing vapour bubbles that are relatively enriched in gas-mixtures (CO,-CHu) and depleted in NaCI. On further cooling, the liquid phase will become enriched in NaCI and depleted in gas components, whereas the oppo- site occurs in ...

  • Thermal evolution of the organic matter and oil generation in the Serbian part of the Pannonian Basin.

    Stojanović Ksenija, Kostić Aleksandar, Nytoft Hans Peter, Stojadinović Sanja (2015)

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен
    ... hydrocarbon exploration and pro- duction. Rotár-Szalkai et al. investigate the origin of saline water, CO2, and hydrocarbons in a lacustrine tur- bidite sandstone reservoir. These sandstone reservoirs are part of a multilevel field system that contains large CO2 and mixed gas accumulations in the Danube ...
    ... subsurface, for the very first time beneath this lake. The stratigraphic and structural inter- pretation of this data, integrated with nearby hydrocar- bon well results, vintage industry seismic data, and observations of lake-floor gas seeps provide new in- sights into the regional-scale evolution of the ...
    ... e (Horvath et al. and Gúthy et al.) to local-scale (Loisl et al.) structural evolution of the basin, petroleum geology and systems (Lember- kovics et al., Cvetković et al., Ivanišević and Radivojević, and Rotár-Szalkai et al.), geothermal energy (Macenić and Kurevija) and CO2 storage (Vulin ...

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • Exploration, production pace faster in Serbia, Bosnia and Herzegovina

    Karović-Maričić Vesna, Danilović Dušan, Batalović Veselin, Leković Branko (2012)

  • Merenje i praćenje temperature u cevovodima

    Jelena Plećaš (2024)
    U završnom radu pod naslovom „Merenje i praćenje temperature u cevovodima“ istražuje se značaj merenja temperature u industriji. Opisuje se kako je merenje temperature ključno za efikasno upravljanje procesima i održavanje sigurnosti.Postoje i razvijene su brojne metode merenja temperature, od kojih svaka ima svoju specifičnu primenu, u određenim oblastima. Rad obuhvata pregled razvoja termometrije, različite temperaturne skale, kao i detaljan prikaz instrumenata za merenje temperature. Posebna pažnja posvećena je greškama dodirnih termometara i metodama korekcije.Na kraju,rad se fokusira na ...
    temperatura, instrumenti, senzori, termometri, cevi
    ... 20Handbook.pdf [5] TRANSACTIONS In Measurement and Control, Vol. 1 _Non.contact temperature measurement, Omega.com website http://www2.kelm.ftn.uns.ac.rs/literatura/si/pdf/Transactions_Vol_I.pdf [6]DTSX200 Distributed Temperature Sensors for Oil and Gas Production https://web-material3.yokogawa ...
    ... yokogawa.com/1/11305/tabs/rd-te-r05502- 010.pdf [7] Temperature Sensing Challenges in the Oil & Gas industry https://www.strath.ac.uk/media/1 newwebsite/centres/advancedformingresear chcentre/documents/Young_ EMPRESS_NPL_Workshop_April_18_2018_M armon_EWC_FINAL_FOR_Jonathan.pdf [8] Stanković, Dragan ...
    ... Termičko kretanje u gasovima razlikuje se od termičkog kretanja u tečnostima i kristalima. Prema kinetičkoj teoriji gasova, apsolutna temperatura 7 tela definiše se kao mera srednje energije translatornog: kretanja molekula gasa: ,= =ŠkT (1.1) gde su: m – masa molekula gasa, v – srednja brzina ...

  • Double traveling valve increases rod-pump efficiency

    Miloš Petrović, Bojan Martinović, Milica Ješić, Miroslav Crnogorac (2023)
    Traditional sucker rod pumps (SRP) use a single traveling valve, but recent double traveling valve innovations have improved SRP performance and efficiency in field applications with double traveling valves installed in pumps with top mechanical seating. The valves sealed better and produced similar fluid volumes compared with the previous single-valve pumps. They also enabled a reduction in pump diameter and optimized usage of surface equipment. Overall, the double travel valve SRPs produced stable production rates and annual production targets.
    дубинска пумпа на клипним шипкама, производња нафте, ефикасност

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија

  • Избор одговарајуће механичке методе

    Анастасија Мирјанић (2024)
    Експлоатација нафте и гаса кључна је за задовољење глобалних енергетских потреба. Различите методе се користе за ефикасно вађење тих природних ресурса из земљe. Механичке методе експлоатације, које укључују различите врсте пумпи и компресора, играју значајну улогу у овом процесу. У нафтној индустрији, ефикасно вађење нафте и гаса зависи од избора одговарајуће технологије пумпања. Две од најраспрострањенијих технологија су дубинске пумпе са клипним шипкама (енгл. Sucker rod pumps- SRP) и електричне потапајуће пумпе (енгл. Electrical submersible pump- ESP). Овај завршни рад ће ...
    дубинске пумпе са клипним шипкама, замена, електрична потапајућа пумпа, производња, бушотина

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija

  • Univerzitet u Beogradu Rudarsko-geološki fakultet Master rad Modeliranje disperzije prašine u životnoj sredini u fazi proširenja P.K. Veliki Krivelj

    Magdalena Milanović (2024)
    Modeliranje disperzije zagađenja životne sredine predstavlja proces u kom se korišćenjem matematičkih modela vrši simulacija širenja i raspodele zagađenja u životnoj sredini, koje nastaje određenim aktivnostima. Modeliranje nam pomaže da predvidimo zagađenja koja dobijamo planiranim aktivnostima u zemljištu, vodi i/ili atmosferi određene regije, kako bi na vreme preduzeli odgovarajuće preventivne mere kojim se smanjuje ili upotpunosti eminiše uticaj na životnu sredinu i zdravlje ljudi. Glavni zadatak ovog rada je procena uticaja, projekta proširenja kopa Veliki Krivelj, na kvalitet vazduha. Rezultati koji ...
    Modeliranje disperzije zagađenja životne sredine, površinski kop Veliki Krivelj, AERMOD, zagađenje vazduha, disperzija prašine
    ... zapremina i temperatura bilo kog gasa su povezani Jednačinom stanja sa širokim spektrom uslova. Ova jJednačina je poznata kao Jednačina stanja idealnog gasa. Uz nekoliko ograničenja Jednačina stanja idcalnog gasa relativno dobro opisuje ponašanja mnogih realnih gasova, pod različitim uslovima. Ovaj ...
    ... Bojl-Mariotov zakon i Čarlsov zakon. [5] pV=nRT gde je: V – zapremina gasa, p – pritisak gasa, n – broj molova gasa, nem/M, 17 R- univerzalna gasna konstanta čija je vrednost 8,31432 J/(mol·K) T- temperatura gasa (K). 3.3.2. Vazdušni pritisak Vazdušni ili atmosferski pritisak predstavlja ...
    ... različitih gasova pri čemu su najzastupljeniji azot sa 78%, kiseonik sa 21% i argon sa 0,9% (s/ika 3.1.). Svi ostali gasovi (ugljen-monoksid, ugljen-dioksid, oksidi sumpora, oksidi azota, policiklični aromatični ugljovodonici...) čine svega 0,1%. [7] 10 Slika 3.1. Sadržaj gasova u atmosferi ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет