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Упит dcterms_subject_txt:Gas Well

951 items

  • Srbija u OneGeology Europe

    Danka Blagojević, Ranka Stanković, Petar Stejić, Velizar Nikolić (2014)
    Геолошки завод Србије као носилац Пројекта ОneGeologyEurope заједно са Рударско геолошким факултетом и Министарством за природне ресурсе, рударство и просторно планирање су се укључили у међународни Пројекат OneGeology Europe у мају 2013. године у већ поодмаклој фази израде Пројекта. До краја 2013. године испунили су завршене активности које треба да доведу до пуноправног укључења у Пројекат чиме је Република Србија нашла своје место на Геолошкој карти Европе 1:1М. Геолошка карта Србије 1:1М представља компилациону односно поједностављену верзију ОГК 1:500 ...
    OneGeologyEurope, метаподаци, хармонизација података, вишејезични мета-информациони систем
    ... 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 SERBIA IN ONEGEOLOGY EUROPE СРБИЈА У ONEGEOLOGY EUROPE ...
    ... that all data sets have a coherent data structure, to enable web services to read and search the data in the right way. Syntax and data language, as well as systems for data management were implemented in accordance with the OpenGIS (OGS) standards and guidelines. Thus, the process of generating ...
    ... ck_and_Superficial_Geology/MapServer/WMSServer and it contains a layer of geological units and a layer of geological structures. Service name, as well as the layers names are strictly defined by 1G-E propositions, and reflect information about data owner (GZS), data provider (RGF), scale and content ...

  • 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
    ... dependency since they are relying on a single-input fuel–natural gas (Novi Sad, Pančevo, Subotica, Jagodina, Šabac). The other group of DH systems is charac- terized by high values of primary energy factor and carbon dioxide coefficient, as well as by low import dependency (Kragujevac, Kruševac, Bor). ...
    ... per capita) is obtained, as well as an indicator of primary energy savings per capita. These indicators pro- vide the basis for the estimation of recoverable heat energy potential for other cities, with district heating systems and plans for WWTP construction, as well as for the evaluation of effects ...
    ... Energy Agency 2016). Being heavily dependent on fossil fuels, energy use in urban areas currently generates more than 70% of global green- house gas (GHG) emissions. The major share of energy consumed in urban areas is related to heating needs, while fossil fuels make approximately 75% of consumption ...

  • XRD dertermination od hydrothermal phases related to epithermal mineralization in the Čukaru Peki deposit

    Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Kristina Šarić (2024)
    Čukaru Peki, epithermal mineralization, hydrothermal alterations

  • Cytotoxic activity of tetradentate Schiff Base Copper(II) complexes

    Nevenka Gligorijević, Aleksandar Mijatović, Sandra Aranđelović, Rada Baošić (2021)
    Istraživanje kompleksa bakra kao potencijalnih antikancerogenih agenasa nudi ohrabrujuće perspektive u odnosu na komplekse platine (II) računajući na smanjenu toksičnost, novi mehanizam delovanja, različit spektar aktivnosti i perspektivu neunakrsne rezistencije. Kompleksi Šifovih baza bakra(II) koji sadrže tetradentatne ligande acac2en tipa (acac2en (1); tfacac2en (3), acactfacacen (4), acacphacacen (6)) pokazali su važnu antioksidativnu aktivnost, visok potencijal za interakciju sa HSA i DNK, u prethodnim studijama. Zbog toga je bilo interesantno ispitati i uporediti potencijal antikancerogene aktivnosti in vitro, u odnosu ...
    Bakar(II) kompleksi, citotoksičnost, ćelijski ciklus

  • Application of stochastic models for mine planning and coal quality control

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... 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 APPLICATION OF STOCHASTIC MODELS FOR MINE PLANNING AND COAL ...
    ... Operational planning is concerned with daily or weekly requirements of the mine. Proper operational planning must conform to short term mine plans as well as satisfying many practical details that are unique to day to day operations. Grade control problems are usually in- corporated in the operational ...
    ... is closer to the planned mean if compared to the grades of each individual block which com- prise the pile. This phenomenon of variance reduction is well known and it is referred to as the volume-variance relationship [4, 5]. Prior to designing the homogenization stockyard it is necessary to know the ...

  • Procena poroznosti i litologije na osnovu geofizičkih merenja u severoistočnoj Rumuniji

    Manja Grifatong (2024)
    Geofizička karotažna merenja imaju važnu ulogu u određivanju fizičkih i geoloških svojstava delova Zemljine kore. Cilj ovog rada je da se prikaže procena poroznosti i litoloških karakteristika formacije na osnovu rezultata geofizičkih karotažnih merenja. Na osnovu dostupnih podataka izrađeni su dijagrami promene poroznosti sa dubinom i krosplot dijagrami neutronska poroznost – srednja gustina za dve bušotine koje se nalaze na Moldavskoj platformi, u severoistočnoj Rumuniji. Na osnovu ovih dijagrama određene su zone povećane poroznosti i litologija formacija kroz koje ...
    karotaž gustine, neutronski karotaž, dijagram promene poroznosti, kros- plot dijagram
    ... SREDNJA VREDNOST GUSTINE g/emž »> 23 2a - 26| [ O L O G I J A POROZNOST PEŠČARA 35 30% 2%% 20% 12 Uticaj gasa – PPovećana poroznost | | GAS VODA Slika 2. Uticaj prisustva gasa u formaciji na odziv karotaža gustine (Rider, 2002) 2.2. Neutronski karotaž Neutronski karotaž je prvi put ...
    ... 2002) U slučaju kada je gas prisutan u formaciji, slika 5, neutronski karotaž pokazuje nerealno niske vrednosti poroznosti, zbog malog sadržaja vodonikovih atoma u gasu. Karakteristično ukrštanje krivih karotaža gustine i neutronskog karotaža u zonama u kojima je prisutan gas, prikazano na slici 5 ...
    ... Jedna od indikacija da se u njima potencijalno nalazi gas. Druge indikacije da Je porni prostor ispunjen gasom su nerealno niske vrednosti merene neutronskim karotažom (svetlo plava linija), zahvaljujući malom sadržaju vodonikovih atoma u gasu, kao i niske vrednosti merene karotažom gustine (crvena ...

  • Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2019)
    In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...
    NER, Named Entity Recognition Systems, Serbian, Personal Names
    ... 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 Proceedings of Recent Advances in Natural Language Processing ...
    ... repeated from one to four times which yielded “four levels” of gold standard. Between these repeated runs the devel- opment of SRPNER continued, as well as the en- hancement of e-dictionaries of Serbian. 3 Training Different NER Systems 3.1 Training Sets The gold standard GOLDPERS contains 9, 046 ...
    ... statistical models for a variety of languages, which can be installed as individ- ual Python modules. It supports training new lan- guage models, as well. We used it for training NER on our four ver- sions of GOLDPERS. We coded a Python script that transforms each sentence into a training sam- ple, ...

  • High-resolution sequence stratigraphy of carbonates - theory and examples

    Jelena Stefanović, Dejan Radivojević (2020)
    Циљ рада је да кроз теоријски аспект и примере примене представи секвенциону стратиграфију високе резолуције карбонатних седимената. У том смислу први део се односи на појам и значење високе резолуције у секвенционој стратиграфији. Од временских и просторних скала које одговарају сеизмичким профилима у последњих двадесет година метода је нашла примену на скалама које одговарају бушотинским подацима или изданцима. Као најпогоднији седименти за овај тип истраживања су се показали карбонати јер су осетљиви на еустатичке промене, а основе секвенционе стратиграфије ...
    изданак, системска група, јура-креда, карбонатна платформа, плитководна средина
    ... 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 67 Z A P I S N I C I S R P S K O G G E O L O [ K O G D ...
    ... temporal and spatial scale corresponding to seismic profiles in last twenty years the method has found its implementation on scales equivalent to well data or outcrops. Carbonates proved to be the most convenient of all sediments for this type of investigation because of their sensitivity to eustatic ...

  • Konceptualni model hidrogeotermalnog sistema šire okoline Brusa - geotermalna karakterizacija sistema / Conceptual model of hydrothermal system of Brus area - system geothermal characterization

    Dejan Milenić, Ana Vranješ, Marinko Toljić, Ivana Vasiljević, Natalija Radosavljević, Matija Ognjanović (2024)
    Postavljeni konceptualni model hidrogeotermalnog sistema Brusa sa širom okolinom testiran je primenom različitih hidrohemijskih i izotopskih metoda u cilju njegove verifikacije i karakterizacije. Rezultati su ukazali na atomsfersko poreklo geotermalnih fluida i na razviće primarnih rezervoara u okviru karbonatnih stena. Prvi rezervoar formiran je u okviru krečnjaka gornjotrijakse starosti, dok drugi rezervoar egzistira u okviru trijskaih mermera. Zone prihranjivanja locirane su u zapadnom delu terena. Sistemi gravitacionih raseda kontrolišu kretanje fluida u sistemu, dok proces jonske izmene dominira u ...
    hidrogeotermalni sistem, hidrohemijske i izotopske metode, mladi intruzivi

  • Bezbednosna rastojanja u jamskim magacinima eksploziva u domaćoj i međunarodnoj praksi

    Luka Crnogorac, Ognjen Popović, Toma Jovičić, Veljko Lapčević (2024)
    Projektovanje jamskih magacina eksploziva predstavlja složen inženjerski problem. Sama namena jamskih magacina zahteva ispunjenost niza uslova koji se odnose na bezbedno pozicioniranje magacina, ispunjenost uslova ventilacije, pristupa, rukovođenja magacinom, načina skladištenja eksplozivnih sredstava, protivpožarne zaštite, elektro zaštite itd. Veoma važan parametar prilikom projektovanja jamskih magacina eksplozivnih sredstava predstavlja minimalno sigurnosno rastojanje između susednih komora u kojima su smeštena eksplozivna sredstva u cilju sprečavanja potencijalnog neželjenog dejstva vazdušnog udarnog talasa, razornog dejstva eksplozije i seizmičkog dejstva eksplozije. U ovom radu su prikazani ...
    jamski magacini, eksplozivi, bezbednosna rastojanja
    ... bi mogao prouzrokovati zarušavanje ili cventualnu eksploziju, kao i tamo gde u slučaju cksplozije ne bi stradale jamske prostorije u pogonu odakle gasovi od eksplozije mogu dopreti na radilišta [3]. Smeštaj eksploziva u magacinima predviđen je u posebnim komorama, a različite vrste eksploziva ne smeju ...
    ... 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 160 INTERNATIONAL CONFERENCE OMC 2024 XVI MEĐUNARODNA ...
    ... effect of the explosion. This paper will present the legal framework and practice in the design of explosive magazines in the Republic of Serbia, as well as international practice and regulations. From the comparative analysis of domestic and international practice, conclusions were drawn with best ...

  • Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders

    Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić (2023)
    ... 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 The Serbian Society for Ceramic Materials Institute for ...

  • Основе конструисања

    Бобан Анђелковић, Милош Танасијевић, Филип Милетић (2023)
    Машинске конструкције

  • Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP

    Boban Pavlović, Nikola Trtica (2024)
    This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...
    ETS, BDP - rashodni pristup, cene električne energije
    ... assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia's electricity sector, which relies heavily on lignite-based pro- duction ...
    ... Mechanism (CBAM), which was introduced in 2023. These initiatives serve distinct purposes and reflect the EU's commitment to reducing greenhouse gas (GHG) emissions while main- taining competitiveness (European Commission, 2024). The EU's ETS aims to reduce GHG emissions and promote a low-carbon ...
    ... countries seeking to join the EU and countries with substantial trade with the EU have various options for introducing instruments to reduce greenhouse gas emissions, including introducing their own ETS or paying CBAM. They also have the option to pursue other climate-related policies, such as carbon ...

  • Дефинисање геотехничких параметара еолских седимената земуснког платоа на основу лабораторијских и теренских SPT испитивања

    Ђорђе Крзман (2024)
    Циљ овог рада је био да се одреде геотехничке караткеристике предметног терена што представља полазну основу за рационално пројектовање и градњу. Истражним бушењем утврђено је да предметни терен изграђују четри лесна хоризонта и три слоја погребене земље до дубине од 22-23 m. Лабораторијским испитивањем добијени су ефективни параметри смичуће чврстоће, где се кохезија најчешће креће између c’=14 и 18 kPa, а угао унутрашњег трења f'= 25 - 30 °. Теренска SPT испитивањем уз коришћење прихваћених корелација у геотехничкој пракси ...
    лес, лабораторија, SPT, корелације, параметри
    ... 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 VHupBep3aurer y Beorpajy PyX)napcko — reoJolmkH (baKyJITeT ...
    ... uneven, silly, sandy composition, most often clayey, they contain carbonate in fhe form of mossy |accumulations and concretions 1-3 cm in size, as well as staining, stains and scraps of Mn and Fe oxides. | ney are easily destroyed to silt particles, they are wetted soft and soft plastic, they are ...
    ... an uneven, silty, sandy composition, most often clayey, they contain carbonate in the form of mossy accumulations and concretions 1-3 cm in size, as well as staining, stains and scraps of Mn and Fe oxides. They are easily destroyed to silt particles, they are wetted soft and soft plastic, they are not ...

  • Coal homogenization stockyard sizing “Tamnava – Zapad” case study

    Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer (2016)
    ... 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 COAL HOMOGENIZATION STOCKYARD SIZING, “TAMNAVA – ZAPAD” ...
    ... is & Agioutantis, 2001) For "Tamnava Zapodno-Polje" a simulation was run on a small test site using data from the technological block model, as well as simulated data based on statistical parameters: average value and standard deviation. It should be pointed out that increasing the number of ...

  • An Efficient Class of Iterative Root-Finding Methods with Applications

    Dejan Ćebić, Nebojša Ralević (2021)

  • GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities

    Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević (2021)
    GNSS, Time series, Seismic deformations, Earthquake, Infrastructure utilities

  • Primjena magnetometrijskih ispitivanja na arheološkom lokalitetu Nedeljkova humka

    Mirko Petković, Vesna Cvetkov, Milorad Ignjatović, Dejan Naumov (2020)
    ... 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 26 PRIMJENA MAGNETOMETRIJSKIH ISPITIVANJA NA ARHEOLOŠKOM ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... it has defined a model for adequate distribution of well injection gas, at the level of gathering stations or compressor stations. For the purpose of oil production optimization, it has applied the system analysis of oil well operations in Gas Lift, which should result in more efficient oil production ...
    ... fracturing wastewater from oil and gas operations, Desalination, 312, 60-66. Becker J.R. (1997). Crude oil waxes, emulsions and asphaltenes. Tulsa, OK, USA, Penn Well Publishing Company. Beggs H., (2008). Production Optimization Using Nodal Analysis, Oil & Gas Consultants, 2nd edition. Bello ...
    ... dsandstone gas reservoirs. Acta Petrol. Sin.32 (6), 1007–1011. Wang Z.G., Li A.F., (2000) .Experimental study on pore-blocking mechanism in gravel pack sof sand control well. J.ChinaUniv.Petrol.24 (5), 49–51. Worldlook (2010), Worldlook at reserves and production, Oil and gas journal, Vol ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... it has defined a model for adequate distribution of well injection gas, at the level of gathering stations or compressor stations. For the purpose of oil production optimization, it has applied the system analysis of oil well operations in Gas Lift, which should result in more efficient oil production ...
    ... fracturing wastewater from oil and gas operations, Desalination, 312, 60-66. Becker J.R. (1997). Crude oil waxes, emulsions and asphaltenes. Tulsa, OK, USA, Penn Well Publishing Company. Beggs H., (2008). Production Optimization Using Nodal Analysis, Oil & Gas Consultants, 2nd edition. Bello ...
    ... dsandstone gas reservoirs. Acta Petrol. Sin.32 (6), 1007–1011. Wang Z.G., Li A.F., (2000) .Experimental study on pore-blocking mechanism in gravel pack sof sand control well. J.ChinaUniv.Petrol.24 (5), 49–51. Worldlook (2010), Worldlook at reserves and production, Oil and gas journal, Vol ...