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Упит dcterms_subject_txt:Gas Well

951 items

  • Методологија интегралне анализе сценарија енергетског развоја

    Александар Маџаревић (2019)
    енергетска безбедност, сценарио развоја, фази логика, сигурност снабдевања, доступност, расположивост, природни гас
    ... снабдевање гасом из Северне Африке и ТНГ терминала на Крку (поред додатног правца за снабдевање гасом из Баумгартена). 6.3 Сценарији развоја инфраструктуре природног гаса до 2025. године Стратешки циљеви Србије у сектору природног гаса су остварење сигурног снабдевања природним гасом, успостављање ...
    ... систем природног гаса у Републици Србији (ЈП Србијагас, 2017) Подземно складиште гаса Банатски Двор је веома значајно за обезбеђивање сигурног снабдевања природним гасом у Србији. Лоцирано је у простор исцрпљеног гасног лежишта чији је капацитет био 3,3 милијарде кубних метара природног гаса. Укупна површина ...
    ... природног гаса Комбиновање сценарија инфраструктурног развоја и сценарија потрошње природног гаса резултира са шест могућих пројекција будућег развоја сектора природног гаса у Републици Србији до 2025. године (Табела 6.7). Табела 6.7 Комбиноване пројекције будућег развоја сектора природног гаса у Републици ...

  • Mogućnosti primene novih tehnologija u proizvodnji nafte i gasa u NIS-NAFTAGAS-u

    Velibor Đurić (2008)
    Proizvodnja nafte i gasa, mogućnost primene novih tehnologija, NIS-NAFTAGAS.

  • Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic

    Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)
    Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...
    mehaničke metode, proizvodnja nafte, fazi logika, donošenje odluka, optimizacija
    ... a new well. The overlap level can be expressed in percentages (Table 5). Figure 6. Model results (a) standards for all methods of exploitation, (b) overlapping of the gas lift (GL) standard with a new well, (c) overlapping of the electric submersible pumps (ESP) standard with a new well, (d) ...
    ... Method with New Well (%) GL 80.35 SRP 54.28 ESP 43.91 HP 49.03 PCP 40.70 Figure 6. Model results (a) standards for all methods of exploitation, (b) overlapping of the gas lift (GL) standard with a new well, (c) overlapping of the electric submersible pumps (ESP) standard with a new well, (d) overlapping ...
    ... additional limitations at the bottom of the well (high gas-liquid ratio—GLR, scale, sand, corrosion). The third step is the economic parameters of technically applicable methods. For each candidate method, the present value of the investment during the life of the well is calculated, taking initial costs ...

  • Hydrodynamic analysis of radial collector well ageing at Belgrade well field

    Đorđije Božović, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković (2019)
    The origin and effect of hydraulic resistances on the rate of ageing of radial collector wells are identified through numerical hydrodynamic analysis. The research includes hydrodynamic modeling of one such well with new laterals at Belgrade well field. The performance of the laterals is aggravated by rapid ageing. The change in the hydraulic parameters of the laterals during the first decade of operation is analyzed through simulations of the groundwater regime with realistically specified geometries and hydraulics of the ...
    Colmation, Incrustation, Groundwater modeling, MODFLOW–USG, Connected Linear Network Process

  • Mogućnosti primene uređaja za automatsko merenje proizvodnje fluida na naftnim poljima Nis-Naftagasa

    Jelena P. Raković (2015)
    sistem sabiranja, pripreme i otpreme nafte i gasa, naftno polje, NIS

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... potential energy of the fluid. Free gas in the fluid can negatively affect the pump's efficiency, especially at low pressure and during gas-liquid two-phase flow at the bottom of the well. To minimize the detrimental effects of gas, gas anchors are used to separate gas bubbles from the oil, thereby ...
    ... value was 16. 64 7.IMPLEMENTATION OF MACHINE LEARNING FOR DEEP WELL PUMP DIAGNOSTICS AT NIS COMPANY As a leader in the oil and gas industry, NIS faces significant challenges in effectively monitoring and maintaining its deep well pumps. Implementing machine learning can play a pivotal role in ...
    ... depicted equipment utilizing balance via counterweights on the main lever and balance beam. 2.1.2 Subsurface equipment for deep well pumping includes: a) Downhole pump b) Gas anchor c) Tubing anchor d) Sucker rods e) Tubing The downhole pump converts mechanical work into potential energy by ...

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... observation well, as well as at the control gate (Figure 4). The decrease in the groundwater level at PP-3 during the measurement process (7 h) was ∆h = 7.49 m, which is indicative of intensive interaction of the water in the tunnel and the hydrogeologic environment within the zone of observation well PP-3 ...
    ... 18 0.51 2.85 ∆S (m)/PP-3 3.18 43.03 42.14 2.85 However, despite the fact that the greatest changes were detected at observation well PP-3, a comparative analysis of that well and PP-1 indicated that the groundwater level largely depended on the operating regime of the tunnel. Parallel plots showed different ...
    ... observation wells PP-1 and PP-3, (b) Comparative plots of groundwater levels in observation well PP-1 and the water level in surface water reservoir, (c) Comparative plots of groundwater levels in observation well PP-3 and the water level in surface water reservoir, by phase (A, B and C). The relatively ...

  • Linear-motor plunger pump increases lifting efficiency

    Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev (2022)
    plunger, linear, motor, pumps

  • Introductory editorial - Special issue: Genesis and protection of groundwater in carbonate aquifer

    Saša Milanović (2019)
    Geochemistry and Petrology

  • Pregled hidrodinamičkih istraživanja bunara sa horizontalnim drenovima numeričkim metodama

    Đorđije Božović, Dušan Polomčić, Dragoljub Bajić (2020)
    U radu je predstavljen pregled odabranih hidrodinamičkih istraživanja realizovanih primenom numeričkih metoda simulacije kretanja podzemnih voda pod uticajem rada bunara sa horizontalnim drenovima. Na osnovu pristupa u matematičkom i hidrauličkom tretiranju, kao i numeričkoj simulaciji bunara sa horizontalnim drenovima na modelima, predstavljeni su najznačajniji aspekti izrade hidrodinamičkih modela ovog kompleksnog tipa vodozahvatnog objekta. Metodologija obuhvata izbor: a) graničnih uslova za simulaciju prirodnih granica, izvora prihranjivanja i dreniranja izdani; b) primenjivanog stepena diskretizacije prostora obuhvaćenog modelom u planu i profilu; ...
    horizontalni bunari, hidraulika bunara, analitički modeli, numerički modeli, hidrodinamičko modeliranje podzemnih voda

  • Design of a sucker rod pumping system

    Ana Ponoćko (2024)
    For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...
    sucker rod pump, fluid production, mechanical extraction methods,, Prosper, QROD, RODSTAR
    ... R-rod T-tubing Example of a deep well pump designation according to API standards: 25 – 150– RHAM-12-5-2 21 3.2 Gas anchors Gas separators remove as much gas from the fluid in the well as possible before it enters the pump. The presence of free gas in the cylinder not only reduces the ...
    ... Length 0.9 m Bottom Hole Temperature 68 degC wđHendTenve·ah.re:_;s jdegc Well Head Pressure 6 BARaA 6.5. Figure Well XX-1 in Prosper |_PVT Data T Oil Gravity 920 Kg/m3 Polished Rod Power 0.32914 - |kw (Gas Gravity 0.687 sp. gravity Name Plate Power\ 0.44828 w Water Salinity 6221.83____ppm ...
    ... discharge valves—larger suction valve and smaller discharge valve—as well as higher volumetric efficiency in cases where pumping is performed when the dynamic pressure is lower than the saturation pressure (presence of gas at the pump intake) and the ability to achieve a high ratio of discharge ...

  • Analysis and visualization of geophysical well-logging data from closely spaced boreholes

    Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov (2024)
    Geophysical logging measurements for determining the condition of the rock mass on the dam profile and locating the predisposed directions of water circulation and loss from the reservoir were conducted in four boreholes distributed at a close distance. The survey was carried out in a typical karst terrain, which is an additional challenge for defining the geological model, especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis ...
    well-logging in karst, water loss, data correlation, data fusion
    ... visualization of geophysical well-logging data from closely spaced boreholes Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Analysis and visualization of geophysical well-logging data from closely ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs TToceéno u30anue na Geologica Macedonica, N0.6 MAKE OHCKO ...
    ... econosaare Ha PenyOnka CeBepHa MakcJuoHuja Fifth Congress of Geologists of the Republic of North Macedonia ANALYSIS AND VISUALIZATION OF GEOPHYSICAL WELL- LOGGING DATA FROM CLOSELY SPACED BOREHOLES IBranislav Sretković, !'Iyvana Vasiljević, IDimitry Sidorov - Biryukov 1University of Belgrade - Faculty ...

  • WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)
    ... data include: basic data, hydrogeology, biology, geology and mining as well as specific information related to the terrain of abandoned mines [7]. Spatial data in the aforementioned study on terrain of abandoned mines as well as data concerning the remediation of this terrain were generally available ...
    ... landfills within the mining waste field, as well as other data related to the management of mining waste. In the cadastre of abandoned mines and mining facilities data on the position and status of those mines and mine facilities are entered, as well as data on implemented measures for remediation ...
    ... average bench heights, the overall depth of the pit, volume, as well as general data collected during the field visit related to recultivation, water level (whether the mine is above, below, or above and below water level), as well as the site, for example, a pit, a landfill, workshop or plant. ...

  • Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)

    Saša Ivanišević, Dejan Radivojević (2018)
    Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...
    naftna geologija, depozicione sredine, formacije, Panonski basen

  • Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)

    Dušan Polomčić, Dragoljub Bajić, Jelena Zarić (2015)
    A groundwater flow model was developed to simulate groundwater extraction from the public water supply source of the City of Kikinda. The hydrodynamic model includes the municipal groundwater source of Kikinda (Šumice and the Jezero Well), but also an extended area where there are groundwater sources that provide water supply to three factories: (MSK, TM and LŽT - Kikinda). Hydrodynamic modeling, based on the numerical method of finite differences will show the groundwater balance of the sources in the ...
    Water supply, Aquifer, Flow, Groundwater regime, Numerical modeling, Particle tracking
    ... hydrodynamic model, well discharges at Šumice were registered every seven days during the period from January 1 to December 31 (Table 2). Figure 7 shows individual well discharges recorded at Šumice during the one-year period. Figure 7. Registered individual well discharges, January ...
    ... r flow, as well as the goal of the task at hand, were of primary importance in selecting the mathematical model concept. A multi-layered model was developed. The hydrodynamic model represented the municipal groundwater source of Kikinda (the source at Šumice and the Jezero Well), but also the ...
    ... January 1 to December 31, 2009 The individual well discharges in the model of Šumice were specified in accordance with both the recorded operating hours and discharge rates. The well screens were Journal of Sustainable Development of Energy, Water and Environment Systems Year 2015 Volume 3, ...

  • A Mathematical Learning Environment Based on Serbian Language Resources

    Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan (2018)
    In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...
    mathematical content, text processing, mathematical formulae
    ... Belgrade Human Language Technology group for several decades [1], as well as a newly developed glossary, Termi. The system is aimed at providing for enrichment of these resources with terms from the mathematical vocabulary, as well as offering support in understanding and solving some real life ...
    ... areas of Mathematics as well as 212 lecture notes. Special attention was paid to the validity of content. For the purposes of lexical processing the entire corpus is converted to textual format. As the documents were in different alphabets and encodings, as well as in different formats, a ...
    ... lexical support. Within MLES various types of lexical resources are used as well as local grammars, with the aim to provide a comprehensive and searchable learning environment. Although the general lexica in Serbian is well covered, mathematical terminology needs further improvements. MLES presents ...

  • Cement sheath integrity control during well life

    Bošković Zvonimir, Čebašek Vladimir, Mitrović Vladimir, Stanić Slobodan (2010)

  • The revision of Quaternary stratigraphy of the Sombor and Subotica artesian well borehole profiles (Bačka, Vojvodina, Serbia)

    Gaudenyi Tivadar, Nenadić Draženko, Jovanović Mlađen, Stejić Petar (2018)

  • Tangential stress in the well in the casing-cement stone-formation system

    Čebašek Vladimir, Bošković Zvonimir, Mitrović Vladimir, Gojković Nebojša (2010)

  • First paleomagnetic and magnetic anisotropy results from Montenegrо - the coastal area

    Emö Márton, Vesna Cvetkov, Martin Đaković, Vesna Lesić, Slobodan Radusinović (2021)
    ... acceptable results (two localities) or obtainedtheir remanence quite recently. The five flysch and transitional marl localities have well-definedAMS fabrics as well as paleomagnetic directions. The AMS fabrics must have been imprinted in aNE-SW oriented compressional strain field, which resulted in ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs EGU21-12596 https://doi.org/10.5194/egusphere-egu21-12596 EGU ...
    ... Croatia. Onelocality, the only one with moderate tilt and rather poor statistical characteristics suggestpost–Eocene CCW, while those with steep dips have well-defined paleomagnetic directions, whichare aligned with the intermediate AMS direction. The positive tilt test, however, provides an overallmean direction ...