429 items

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  Application of Gel for Water Shutoff: A Case Study of Kelebija Oil Field cite

  Irina Zahirovic, Petar Skrobonja, Dušan Danilović (2022)

  This paper focuses on the results of water shutoff operations using DSGA polymer gel in the Kelebija oil field. The methodology of candidate wells selection and the manner of performing the operation will also be included. The Kelebija oil field is characterized by a complex reservoir system with heterogeneous layers of different permeability and dual porosity, which led to the early breakthrough of water. For the last 25 years, average water cut was above 90%. Implementation of water shutoff ...

  intervención de pozos petroleros, reservoir characterization, production control, well logging, downhole intervention, enhanced recovery, complex reservoir, reservoir surveillance, water shut-off, upstream oil & gas

  Irina Zahirovic, Petar Skrobonja, Dušan Danilović. "Application of Gel for Water Shutoff: A Case Study of Kelebija Oil Field" in SPE Production & Operations, SPE (2022). https://doi.org/10.2118/209590-PA

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  Application of Membrane Technology for Separation CO2 from Natural Gas cite

  Lola Tomić, Dušan Danilović, Vesna Karović Maričić, Branko Leković, Miroslav Crnogorac (2020)

  Natural gas consists of a mixture of hydrocarbons with the largest share of methane, and non-hydrocarbon impure components such as N2, CO2 and H2S. In order to fulfill the gas market requirements, it is necessary to separate these unwanted components from the natural gas stream. There are several available technologies for the separation of CO2 from natural gas, such as: polymeric membranes, cryogenic distillation, absorption and adsorption. In this paper is presented the mechanism of CO2 separation using membrane technology, ...

  separacija CO2, polimerne membrane, membranski moduli

  Lola Tomić, Dušan Danilović, Vesna Karović Maričić, Branko Leković, Miroslav Crnogorac. "Application of Membrane Technology for Separation CO2 from Natural Gas" in Underground Mining Engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2020)

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  Productivity improvement with use of beam gas compressor: pilot test in Southeastern Europe mature field cite

  Bojan Martinović, Dušan Danilović, Branko Grubač, Robert Fadiga (2022)

  Most of the wells in the oilfield Turija are operating with sucker rod pumps, where casing pressure at around 15 bar, and with marginal production rates. The high value of casing pressure indicates high pressure on the face of the formation and depends directly on well productivity. In addition, with increasing value of the casing pressure gas column in the annulus is moving the dynamic fluid level near pump intake and more gas is entering the pump, it results ...

  beam gas compressor, BGC, increase productivity, sucker rod pump, SRP, mature field, artificial lift, production optimisation

  Bojan Martinović, Dušan Danilović, Branko Grubač, Robert Fadiga. "Productivity improvement with use of beam gas compressor: pilot test in Southeastern Europe mature field" in International Journal of Oil Gas and Coal Technology (2022)

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  Probabilistic analysis of anisotropic rock slope with reinforcement measures cite

  Zoran Berisavljević, Dušan Berisavljević, Miloš Marjanović, Svetlana Melentijević (2023)

  During the construction of E75 highway through Grdelica gorge in Serbia, a major failure occurred in the zone of reinforced rock slope. Excavation was performed in highly anisotropic Paleozoic schist rock formation. The reinforcement consisted of the two rows of micropile wall with pre-stressed anchors. Forces in anchors were monitored with load cells while benchmarks were installed for superficial displacement measurements. The aim of the study is to investigate possible causes of instability considering different probability distributions of the ...

  povratna analiza, tehnika optimizacije, verovatnoća loma, anizotropija čvrstoće

  Zoran Berisavljević, Dušan Berisavljević, Miloš Marjanović, Svetlana Melentijević. "Probabilistic analysis of anisotropic rock slope with reinforcement measures" in Geomechanics and Engineering (2023). https://doi.org/10.12989/gae.2023.34.3.285

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  Application of the PROMETHEE and VIKOR methods for selecting the most suitable carbon dioxide geological storage option cite

  Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2019)

  CO2 storage in geological formations is one of the leading solutions for mitigation of greenhouse gas emissions. Types of geological formations that can be used for CO2 storage, that are discussed in this paper are: depleted oil and gas reservoirs, saline aquifers and injection CO2 in partially depleted oil reservoirs for enhanced oil recovery (EOR–CO2 method). In order to select the most suitable geological storage of CO2, the ranking of these storage options was performed using two methods of ...

  Prometej, vikor, višekriterijumsko odlučivanje, geološko skladištenje

  Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac. "Application of the PROMETHEE and VIKOR methods for selecting the most suitable carbon dioxide geological storage option" in Underground Mining Engineering, Belgrade : University Of Belgrade - Faculty of Mining and Geology (2019)

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  The shear strength evaluation of rough and infilled joints and its indications for stability of rock cutting in schist rock mass cite

  Dušan Berisavljević, Zoran Berisavljević, Svetlana Melentijević (2022)

  Construction of E75 highway section through Grdelica gorge was one of the most demanding projects realized in recent Serbian history. The alignment approximately 25 km long consists of several tens of bridges, two tunnels, three galleries and cuts with total length of 6 km. The alignment passes through highly anisotropic Palaeozoic schist rock formation of different weathering grades. This study focuses on shear strength properties of discontinuities, which are found to be the critical feature contributing to the occurrence ...

  Diskontinuitet, nelinearni kriterijum loma, anizotropija, hiperbolična anvelopa

  Dušan Berisavljević, Zoran Berisavljević, Svetlana Melentijević. "The shear strength evaluation of rough and infilled joints and its indications for stability of rock cutting in schist rock mass" in Bulletin of engineering geology and the environment, Springer (2022). https://doi.org/10.1007/s10064-022-02580-8

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  Challenges in using wastewater heat pumps in district heating systems cite

  Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović, Dimitrije Manić (2022)

  Decarbonization of district heating systems requires ensuring significant amounts of renewable energy available in the proximity of the district heating network. One of the promising solutions is the utilization of purified water from wastewater treatment plants by heat pumps. However, as a heat source, wastewater treatment plants are characterized by annual variability of the flow and temperature of purified water. The consequence is the variability of recoverable heat potential. In this paper, the effect of variability is analyzed for ...

  Toplotna pumpa, Daljinsko grejanje, Postrojenje za prečišćavanje otpadnih voda

  Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović, Dimitrije Manić. "Challenges in using wastewater heat pumps in district heating systems" in 20th International Conference on Thermal Science and Engineering of Serbia, Niš, Serbia, October 18 – 21, 2022, Faculty of Mechanical Engineering in Niš (2022)

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  Metodologija proračuna sanacije klizišta šipovima cite

  Slobodan Ćorić, Dragoslav Rakić, Stanko Ćorić, Dušan Berisavljević (2022)

  Klizišta u Srbiji, u najvećem broju slučajeva, jako zavise od geoloških uslova u terenu i svako klizište ima svoje specifičnosti koje moraju da se odrede geotehničkim istraživanjima. Stoga su u radu prvo prikazane osnovne karakteristike klizišta u Srbiji, kao i postupci njihovog istraživanja. Zatim su prikazani proračuni sanacije klizišta vertikalnim šipovima. Metodologija proračuna je složena, jer podrazumeva interakciju klizišta i stabilizirajućih šipova. Prilikom određivanja bočne otpornosti tla oko šipova koristi se metoda Brinč Hansena koja uzima u obzir trodimenzionalne ...

  klizišta, geotehnička istraživanja, bočna nosivost šipova, interakcija klizišta i šipa, analiza stabilnosti

  Slobodan Ćorić, Dragoslav Rakić, Stanko Ćorić, Dušan Berisavljević. "Metodologija proračuna sanacije klizišta šipovima" in V simpozijum društva za Geotehniku R. Severne Makedonije, ISRM Specialized Conference, Društvo za Geotehniku Severne Makedonije (2022)

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  In-vitro ispitivanje interakcija dva strukturno slična Rh(III) kompleksa Šifovih baza sa HSA/DNK i molekulski doking cite

  Aleksandar Mijatović, Ljubica Bacetić, Nikola Pavlović, Dušan Ćoćić, Milan Nikolić, Aleksandar Lolić, Rada Baošić (2021)

  Kompleksi metala sa tetradentatnim Šifovim bazama ispoljavaju različitu biološku aktivnost, što omogućava ciljne sinteze novih biološki aktivnih jedinjenja. Proučavane su interakcije H[Rh(acac2en)Cl2] (1) i H[Rh(phacac2en)Cl2] (2) sa humanim serum albuminom (HSA) i sa DNK, primenom fluorescentne i UV-Vis spektroskopije (298 K, pH 7,4). Dobijene su relativno visoke vrednost dinamičke konstante vezivanja (Ksv) i to 3,88·104 M-1 za (1), 7,02·104 M-1 za (2), što ukazuje na značajno vezivanje za HSA. Izračunate konstante unutrašnjeg vezivanja (Kb) su: 2,87·105 M-1 ...

  Aleksandar Mijatović, Ljubica Bacetić, Nikola Pavlović, Dušan Ćoćić, Milan Nikolić, Aleksandar Lolić, Rada Baošić. "In-vitro ispitivanje interakcija dva strukturno slična Rh(III) kompleksa Šifovih baza sa HSA/DNK i molekulski doking" in 57. savetovanje Srpskog hemijskog društva , Dušan Sladić (2021)

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  Hidrogeologija granodiorita Srbije cite

  Dušan Mijović (1996)

  Hidrogeologija, granodioriti

  Dušan Mijović. Hidrogeologija granodiorita Srbije, Beograd:Rudarsko-geološki fakultet, 1996

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  Inženjerske osobine lesa u Jugoslaviji cite

  Dušan Milović (1959)

  Les, Jugoslavija

  Dušan Milović. Inženjerske osobine lesa u Jugoslaviji, Beograd:Rudarsko Geološki Fakultet, 1959

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  Mineraloška studija ruda gvožđa Zapadne Makedonije (Tajmište) cite

  Dušan Kleut (1964)

  Mineralogija, gvožđe, Makedonija

  Dušan Kleut. Mineraloška studija ruda gvožđa Zapadne Makedonije (Tajmište), Beograd:Rudarsko-geološki fakultet, 1964

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  Metalogenija gvožđa katanga formacije u oblasti Čisase (Chisasa). – Zambija cite

  Dušan Drakulić (1978)

  Metalogenija,gvožđe, Čisasa

  Dušan Drakulić. Metalogenija gvožđa katanga formacije u oblasti Čisase (Chisasa). – Zambija, Beograd:Rudarsko Geološki Fakultet, 1978

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  Analiza tehnoloških mogućnosti bagera glodara SRs-1200 24/4 + VR cite

  Dušan Stojanović (1975)

  Bager, tehnološke mogućnosti

  Dušan Stojanović. Analiza tehnoloških mogućnosti bagera glodara SRs-1200 24/4 + VR, Beograd:Rudarsko-geološki fakultet, 1975

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  Mogućnosti efikasnije proizvodnje parafinskih nafti na poljima naftne industrije Srbije cite

  Dušan Danilović (1997)

  Parafinska nafte, proizvodnja, Srbija

  Dušan Danilović. Mogućnosti efikasnije proizvodnje parafinskih nafti na poljima naftne industrije Srbije, Beograd:Rudarsko-geološki fakultet, 1997

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  Optimizacija proizvodnje malih naftnih polja primenom modela integralnog upravljanja cite

  Dušan Danilović (2001)

  Naftna polja, proizvodnja, integralno upravljanje

  Dušan Danilović. Optimizacija proizvodnje malih naftnih polja primenom modela integralnog upravljanja, Beograd:Rudarsko Geološki Fakultet, 2001

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  Iznalaženje uslova selktivnog flotiranja monacita i cirkona u funkciji promena njihovih površina cite

  Dušan Salatić (1965)

  Flotiranje, monacit, cirkon

  Dušan Salatić. Iznalaženje uslova selktivnog flotiranja monacita i cirkona u funkciji promena njihovih površina, Beograd:Rudarsko Geološki Fakultet, 1965

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  Geotehničko modeliranje tla na osnovu parametara određenih seizmičkimdilatometrom cite

  Dušan Berisavljević M. (2017)

  dilatometar, brzina smičućih talasa, čvrstoća i deformabilnost, sleganje. les

  Dušan Berisavljević M.. Geotehničko modeliranje tla na osnovu parametara određenih seizmičkimdilatometrom, Beograd:Rudarsko Geološki Fakultet, 2017

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  Doprinos izučavanju mogućnosti uvođenja očvrslog hidroflotacijskog zasipa u uslovima otkopavanja ležišta Dobrevo"-Zletovo" cite

  Dušan Nikolovski (1991)

  Hidroflotacijski zasip, uslovi otkopavanja, Zletovo

  Dušan Nikolovski. Doprinos izučavanju mogućnosti uvođenja očvrslog hidroflotacijskog zasipa u uslovima otkopavanja ležišta Dobrevo"-Zletovo", Beograd:Rudarsko-geološki fakultet, 1991

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  Otklanjanje prihvata alata za bušenje kao uslov uspešnog završetka izrade bušotine cite

  Dušan Lj. Janačković (2018)

  diferencijalni prihvat, bušeći alat, bušotinski kanal, isplaka, formacija

  Dušan Lj. Janačković. Otklanjanje prihvata alata za bušenje kao uslov uspešnog završetka izrade bušotine, Beograd:Rudarsko-geološki fakultet, 2018