Претрага

Упит dcterms_subject_txt:enhanced recovery

78 items

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... true thickness (except in the western part where intensive parting starts, dip is going over 3° locally). Drill holes that had less than 86% recovery through any coal seam, were discounted and not included for coal estimation. The 11298 lithological records where coded based on Minex lithology ...
    ... In this way the first step of quality control is performed. Bench surfaces designed in this manner allow less dilution effects and greater recovery of reserves. For the case of Tamnava West minimal minable thickens of coal seam was set to 0,5 m. The final design of benches is done in Minex ...

  • 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
    ... Logic Techniques. Energy Sources Part A Recovery Util. Environ. Eff. 2014, 36, 1276–1284. [CrossRef] 3. Jafarinezhad, S.; Shahbazian, M. Modeling the Porosity of the Carbonate Reservoir Using a Genetic Type-2 Fuzzy Logic System. Energy Sources Part A Recovery Util. Environ. Eff. 2015, 37, 1354–1362 ...
    ... depth 2438.4–3352.8 m casing size 0.36576 m dogleg severity 0–10/0.3048 m temperature 82.22–98.89 ◦C flowing pressure >68.95 bar completion simple recovery method secondary waterflood Produced Fluid Properties water cut 70 % fluid viscosity <0.1 Pas corrosive fluid no sand and abrasives <10 ppm GOR ...
    ... 4–3352.8 m casing size 0.36576 m dogleg severity 0–10/0.3048 m temperature 82.22–98.89 °C flowing pressure >68.95 bar completion simple recovery method secondary waterflood Produced Fluid Properties water cut 70 % fluid viscosity <0.1 Pas corrosive fluid no sand and abrasives <10 ppm ...

  • History of meteorite donations to the Collection of Minerals and Rocks of the University of Belgrade, Faculty of Mining and Geology (Serbia)

    Alena Zdravković, Maja Milošević, Kristina Šarić, Ivana Jelić, Ana Černok (2021)
    ... cernok@open.ac.uk 129 collection. Besides numbering, each sample in that catalogue contained information on the sample’s name and the locality of recovery. The meteorites donated to the Mineralogical Museum of the Great School of Belgrade had numbers 36, 37 and 38, but meanwhile the specimen No 36 ...

  • Numeričko modelovanje povećanja iskorišćenja naftnih ležišta injektiranjem polimera i analiza osetljivosti parametara

    Jana Šujica (2024)
    U toku proizvodnje jednog ležišta, nakon primene sekundarnih metoda iskorišćenja, velika količina nafte ostaje zarobljena u ležištu. Ovaj “problem” rešava se upotrebom tercijarnih metoda iskorišćenja.Tercijarne metode mogu se podeliti na: hemijske, termičke, mikrobiološke i metode utiskivanja gasova u uslovima mešanja i nemešanja.U ovom radu analiziraju se hemijske metode koje se odnose na injektiranje polimera u cilju povećanja iskorišćenja naftnog ležišta “X”. Simulacija je rađena u simulatoru “Tnavigator” na sintetičkom modelu u cilju definisanja stepena iskorišćenja naftnog ležišta “X” nakon ...
    povećanje iskorišćenja, utiskivanje polimera, numerička simulacija
    ... vode ıi gasova. Pored sekundarnih metoda u takozvane dopunske metode spadaju i tercijarne metode koje se Jedinstveno zovu EOR metode (eng. Enhanced Oil Recovery). Ove metode se mogu klasifikovati u nekoliko kategorija čiji broj zavisi od određenih kritetrijuma i autora. Osnovna podela EOR metoda ...
    ... Flooding Applied to the Norne Field; [2] IFP School (2009), ITB Reservoir Simulation Course, Bandung; [3] Nabilou, A. (2016) Best Method for Enhanced Oil Recovery from Sarvak Reservoir and Analyse Sensitive Parametrs; [4] Pettersen, O. (2006) Basics of Resevoir Simulation with the Eclipse Reservoir ...
    ... Simulation User Manual; [8] Sheng, J. (2013). A comprehensive review of ASP flooding; [9] Thomas, A. (2016). Polymer flooding. In: Chemical Enhanced 0il Recovery (cEOR) – A Practical Overview (ed. L. Romero-Zeryn); 45 O6pasay 1 H3JABA O AYTOPCTBY 3ABPIIIHOT PAJIA Hwe H nipe3HMe cTyJleHTa 7»4·”/ ...

  • Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia

    Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović (2024)
    lokalni putevi, prirodni hazardi, otpornost na klimatske promene, MaPLoRds

  • Анализа могућности примене метода повећања степена искоришћења на нафтном лежишту "Ј"

    Иван Савић (2024)
    Комплексно лежиште „Ј“ је сачињено од колектор стена различите стратиграфске припадности и хетерогеног литолошког састава. Лежиште се налази у последњој фази разраде, а током животног века експлоатисано је само примарним методама. У раду је приказана анализа стања разраде лежишта, а као основни фактори који су допринели ниском степену искоришћења лежишта издвојени су вискозност нафте, хетерогеност колектора и пад лежишног притиска. Изведена је хидродинамичка симулациона студија помоћу које је издвојена најпогоднија зона за пилотну примену терцијарних метода. Коришћењем „скрининг“ критеријума ...
    Вискозност, хетерогеност, полимери, термичке методе
    ... „HTII HHC HadQrarac“ Hopui Caax, 2018 5. Ahmed, T., “Reservoir Engineering Handbook -— Fifth Edition”, Elsevier, 2019. 6. James J. Sheng, “Enhanced Oil Recovery Field Case Studies”, Elsevier, 2013. 7. Rock flow dynamics, “tNav User Manual English”, July 2022. 8. M. Delshad, D. H. Kim, O. A. Magbagbeola ...
    ... simulators”, The Journal of Canadian Petroleum, 1980 10. Siena, M., Guadagnini, A Rossa, E., Lamberti, A., Masserano F., Rotondi, M, “A Novel Enhanced-Oil-Recovery Screening i Approach Based on Bayesian Clustering and Principal-Component Analysis”, SPE Reservoir Evaluation&Engineering, 2016 11. Taber ...
    ... Taber, J.J., Martin, F.D., Seright, R.S., “EOR screening criteria revisited - part l: introduction to screening criteria and enhanced recovery field projects”, SPE Reservoir Engineering, August 1997 49 O0pasau 1 H3JABA O AYTOPCTBY 3ABPII(IHOT PAJIA e H npe3uMe cryeHra JIBaH Capuh ...

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... primer, Mantsho i saradnici opisuju rad FloatStar Grade-Recovery Optimiser-a (uz korišćenje novih, pouzdanih onlajn analizatora) u BCL-ovom (Bougainville Copper Limited) postrojenu za flotaciji nikla u Bocvani. Oni izveštavaju da je Grade-Recovery Optimiser obezbedio stalna povećanja u flotacijskom ...
    ... K., Yang, C., Mou, X., Gui, W., 2009a. A flotation recovery prediction algorithm based on image feature extraction. Chinese High Technology Letters 19 (9) pp. 957–963 (In Chinese) 324. Zhou, K., Yang, C., Mou, X., Gui, W., 2009b. Flotation recovery prediction based on froth features and LS-SVM. Chinese ...
    ... satisfactory techno-economic indicators. The purpose of the flotation process control is precisely the optimization of the concentrate grade and recovery, while maximizing profits. Consequently, research into the modelling and control of this process have always been an important area in control ...

  • Геолошке карактеристике лежишта нафте која се експлоатишу еруптивном методом

    Милица Милићевић (2024)
    Геолошке карактеристике специфичних лежишта утичу на различите начине на ефикасност еруптивне методе. Најзначајније геолошке карактеристике које делују на еруптивну методу јесу порозност, пропусност, тип лежишта, резервоар стијене, као и тип замки. Еруптивна метода подразумјева коришћење природног притиска ради лакше експлоатације нафте и гаса из резервоара. У завршном раду су приказани различити типови лежишта и њихове геолошке карактеристике, као и предности и недостаци еруптивне методе код истих.
    слојна лежишта, масивна лежишта, зонарна лежишта, геолошке карактеристике, еруптивна метода
    ... The Ghawar Oil Field, Saudi Arabia? Recorder, 32 (4), 40-43. . Dykstra, H. & Parsons, R.L. (1950). 7The Prediction of Oil Recovery by Waterflooding in Secondary Recovery of Oil in the United States. Washington DC: API. Ercegovac, M. (2002). Geologija nafte. Beograd: Rudarsko-geološki fakultet ...

  • Conversion of land areas after coal mine closure and reclamation

    Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić (2023)
    Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.
    rekultivacija, melioracija, revitalizacija, otkopavanje uglja, održivi razvoj
    ... the best option for re-use also involved an initial consultation of the local population and decision-makers on land reuse in the Drmno open pit. Recovery of degraded land from mining activities in the economic circuit comes to meet a requirement of current legislation and a requirement of the local ...

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... n [18,19]. Among these, adsorption and ion exchange techniques are upgraded methods in terms of their simplicity, recyclability and mode of waste recovery from the pollutants [18,20]. In recent years, a lot of studies have been performed with aim of the selection and/or production of low-cost adsorbents ...
    ... 149–155. [CrossRef] 12. Mittal, A.; Malviya, A.; Kaur, D.; Mittal, J.; Kurup, L. Studies on the adsorption kinetics and isotherms for the removal and recovery of methyl orange from wastewaters using waste materials. J. Hazard. Mater. 2007, 148, 229–240. [CrossRef] [PubMed] 13. Leechart, P.; Nakbanpote ...
    ... [CrossRef] 18. Ngarmkam, W.; Sirisathitkul, C.; Phalakornkule, C. Magnetic composite prepared from palm shell-based carbon and application for recovery of residual oil from POME. J. Environ. Manag. 2011, 92, 472–479. [CrossRef] [PubMed] 19. Panneerselvam, P.; Morad, N.; Tan, K.A. Magnetic nanoparticle ...

  • Legal framework for recultivation of degraded areas caused by mining exploitation

    Radmila Gaćina (2023)
    Prilikom površinske i podzemne eksploatacije uglja eksploatacioni sistemi oštećuju veće ili manje površine zemljišta. Iskustva pokazuju da su oštećenja zemljišta znatno veća kod površinske eksploatacije, gde je prostora degradiran ne samo u konturi rudnika i okoline, već se promene takođe dešavaju u prirodnom okruženju. U članku su predstavljeni rezultati studije zakonskih okvira rekultivacije u nekim zemljama sveta i u Srbiji. Praktično iskustvo rekultivacije pokazalo je da iskorišćenje i devastacija tokom rudarske aktivnosti predstavljaju opasnost ne samo za pogođena ...
    rekultivacija, melioracija, otkopavanje uglja, zakonska regulativa
    ... recultivation of degraded areas ... 35 6 CONCLUSION The changes in the environment effected by the coal mining are so complex that often no natural recovery of disturbed areas can occur. Land recultivation is a method of countering the negative after-effects of extracting coal and and returning the land ...

  • Available technological procedures for capturing CO2 in the industrial and power generation sectors

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2021)
    Climate change is a major environmental issue caused by anthropogenic emissions of greenhouse gases. Capturing CO2 and storing it in suitable geological formations is one of the main technological solutions that can provide mitigation of CO2 emission into the atmosphere. Capturing CO2 represents the first phase in process of carbon capture and storage, and includes the application of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing ...
    capturing CO2, power plants, CO2 capture systems, CO2 technologies
    ... reservoir in Serbia for carbon dioxide injection and storage by a multicriteria decision-making approach: a case study. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 2021, doi: 10.1080/15567036.2021.1936303. 4. Leung, D.Y.C.; Caramanna, G.; Maroto-Valer, M.M. An overview ...

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... (LDPE), and polypropylene (PP), pyrolysis, particularly the catalytic cracking, gained notable attention [20–23]. Recently, pyrolysis was also used for recovery of caprolactam from teabag waste with simultaneous production of valuable solid and gas products [24]. The hydrocarbon generation potential of s ...
    ... Properties of a Biodegradable Polymer Filled with Different Wood Flour Particles. Polymers 2020, 12, 2974. [CrossRef] [PubMed] 20. Kumar, S.; Singh, R.K. Recovery of hydrocarbon liquid from waste high density polyethylene by thermal pyrolysis. Braz. J. Chem. Eng. 2011, 28, 659–667. [CrossRef] 21. Park, J.W ...
    ... Laboratory Fluidized-Bed Reactor. Ind. Eng. Chem. Res. 1997, 36, 5118–5124. [CrossRef] 24. Kim, S.; Lee, N.; Lee, J. Pyrolysis for Nylon 6 Monomer Recovery from Teabag Waste. Polymers 2020, 12, 2695. [CrossRef] 25. Tissot, B.P.; Welte, D.H. Petroleum Formation and Occurrence, 2nd ed.; Springer: Heidelberg ...

  • The state and perspective of the natural gas sector in Serbia

    Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević (2016)
    The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...
    Consumption, natural gas, scenarios of development

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • Elektromagnetska sprega sistema litosfera-atmosfera-jonosfera

    Aleksandra B. Kolarski (2016-08-25)
    Radio talasi vrlo niskih frekvencija VLF (eng. Very Low Frequency) frekventnog opsega od 3 do 30 kHz, koji se prostiru talasovodom Zemlja-jonosfera (50 -90 km) su, kao što je poznato, efikasni i nezamenljivi u osmatranju pojava u niskoj jonosferi, sa tla...
    prostiranje talasa vrlo niskih frekvencija, talasovod Zemlja-jonosfera, globalno električno kolo, atmosfersko električno pražnjenje, kratkotrajne svetlosne pojave
    ... onset time to maximum perturbation, and the recovery time to unperturbed signal level have been determined. Detected VLF perturbations have been classified, according to literature, into early events, signatures of LEP events and LORE (LOng-Recovery Early events). On the extremely strong atmospheric ...
    ... poznatim iz literature poremećaji koji su detektovani, klasifikovani su kao: rani poremećaji, signature poremećaja LEP i poremećaji LORE (eng. LOng- Recovery Early events). U noći izuzetno velike olujne aktivnosti 27 - 28. maja 2009. godine, na video snimcima dokumentovan je 71 sprajt i 10 halo-a izazvanih ...
    ... pojave, u koje spadaju: a) rani/brzi (eng. early/fast), b) rani/spori (eng. early/slow) i c) rani poremećaji dugog oporavka, LORE (eng. LOng Recovery Early VLF events) i 2) poremećaji na trasi VLF signala koji nastaju mehanizmom opisanim u odeljku 3.2, tzv. LEP poremećaji. 53 5.2. ...

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)

    Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)
    Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...
    Sphene, Phase transition, Raman spectroscopy, X-ray diffraction, SEM, IR

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... 1–3, respectively. While the enhanced model shows notably better energy performance, the results still remain within the EPC class C (50–100 kWh/m2a). Table 8. Annual energy needed for heating. Stage 1 Stage 2 Stage 3 Base Case Enhanced Base Case Enhanced Base Case Enhanced Heat losses (kWh) Transmission ...
    ... scenarios is shown in Figure 13. It can be observed that the values of “enhanced case” for one stage almost correspond to the values of “base case” for a smaller stage. Stage 3 enhanced case is lower than Stage 2 base case and Stage 2 enhanced case is just slightly above Stage 1 base case (lower in March). These ...
    ... Base Case Enhanced Case National 1 EnerPHit 2 External wall 0.3 0.15 U = 0.294 W/(m2 × K) U = 0.148 W/(m2 × K) Flat roof above heated space 0.15 0.15 U = 0.148 W/(m2 × K) Windows, balcony doors to heated areas 1.5 0.85 U = 1.5 W/(m2 × K) U = 0.85 W/(m2 × K) Aluminium frame with enhanced thermal ...

  • Analiza mogućnosti primene tehnologije hvatanja i skladištenja ugljenika (CO2) na objektima Nis-A

    Isidora Veljanoski (2024)
    U ovom radu opisana je primena CCUS tehnologija u kompaniji NIS i na koji način treba da se optimizuje da bi projekat bio rentabilan.U prvom i drugom poglavlju opisani su energetski trendovi i tranzicije, razvojni mehanizmi za regulisanje emisije gasova staklene baste i o ugljen-dioksidu kao hemijskom jedinjenju i šta je to CCUS.U trećem, četvrtom i petom poglavlju je detaljnije opisano izdvajanje, hvatanje, transport i skladištenje ugljen-dioksida.Šesto poglavlje i sedmo poglavlje obuhvataju rešenja za razvoj i realizaciju CCUS projekata ...
    energetski trendovi, ugljen-dioksid, CCUS, izdvajanje, hvatanje, transport i skladištenje CO2, ležište, ekonomija projekta
    ... in je ct io n Time Slika 5.1 — Primer prikaza odnosa proizvodnje nafie, uhvaćenog i recikliranog CO>» za vreme CO> EOR operacije 1 ENHANCED OIL RECOVERY Caprock Provided by the Globai CC:S Inetitute Slika 5.2 — Skladištenje CO» EOR !!! 27 5.2 Skladištenje u okeanima Jedno od rešenja ...
    ... gasova staklene bašte; – 2019 - KU Green Deal — predlog za transformaciju evropske ekonomije bez emisije gasova do 2050. godine; - 2020 - EU Recovery Plan, plan EU za pomoć nakon pandemije, obezbedio je 30% ukupnih sredstava a klimatski projekat (približno 600 milijardi evra); - 2020 — Stvara ...