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    Wyświetlanie 1-6 z 6
    Tytuł:
    Static and cyclic strength of a cracked body which strengthened by injection technologies
    Statyczna i cykliczna wytrzymałość pękniętego ciała umocnionego za pomocą technologii wtryskiwania
    Autorzy:
    Panasyuk, V.
    Sylovanuk, V.
    Marukha, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/386639.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    mechanika pękania
    technologia wtryskiwania
    wytrzymałość
    injection technologies
    fracture mechanics
    strength
    Opis:
    Using the modern concepts of fracture mechanics, the injection processes of crack-shaped defects in structural elements in different service conditions are modeled. The corresponding calculations, on the bases of which the degree of hardening of the damage structures by the injection technologies and parameters, which influence their efficiency, have been performed. The ways of optimization of injection technology of the damaged structural elements are established.
    Zamodelowana, przy użyciu nowoczesnych koncepcji mechaniki pękania, procesy wtryskiwania defektów w kształcie szczeliny do konstrukcyjnych elementów dla różnych warunków pracy. Przedstawiono odpowiednie obliczenia na podstawie których otrzymano stopień utwardzania elementów uszkodzonych w wyniku procesów wtryskiwania. Ustalono sposoby optymalizacji technologu wtryskiwania elementów konstrukcyjnych z uszkodzeniami.
    Źródło:
    Acta Mechanica et Automatica; 2007, 1, 1; 85-88
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of injection technologies in the device of ground constructions in different geological terms
    Zastosowanie technik iniekcyjnych w celu posadowienia konstrukcji w różnych warunkach geologicznych
    Autorzy:
    Dudlya, N. A.
    Popov, A. V.
    Telnih, N. N.
    Tsaplin, E. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/300063.pdf
    Data publikacji:
    2009
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    technologie iniekcyjne
    injection technologies
    Opis:
    A theoretical ground and examples of successful application of injection re-enforcement of soils for the improvement of his uniformity and rise of bearing strength is given in foundation of different buildings.
    W artykule omówiono podstawy teoretyczne i przykłady skutecznego zastosowania technologii iniekcyjnych w celu poprawy spójności gruntów oraz podwyższenia ich wytrzymałości dla posadowienia fundamentów budynków.
    Źródło:
    Wiertnictwo, Nafta, Gaz; 2009, 26, 3; 507-515
    1507-0042
    Pojawia się w:
    Wiertnictwo, Nafta, Gaz
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lost Cores for High-Pressure Die Casting
    Autorzy:
    Jelinek, P.
    Adámková, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/379956.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technologies
    innovative foundry materials
    product development
    salt cores
    high-pressure die casting
    squeezing-injection
    innowacyjne technologie odlewnicze
    innowacyjne materiały odlewnicze
    rozwój produktów
    odlewnictwo wysokociśnieniowe
    rdzeń
    Opis:
    Development of salt cores prepared by high-pressure squeezing and shooting with inorganic binders has shown a high potential of the given technology even for high-pressure casting of castings. Strength, surface quality of achieved castings, and solubility in water become a decisive criterion. The shape and quality of grain surface particularly of NaCl – cooking salts that can be well applied without anticaking additives has shown to be an important criterion. Thus the salt cores technology can cover increasingly growing demands for casting complexity especially for the automobile industry.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 2; 101-104
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An integrated approach to development and simulation manufacturing processes of optical products
    Autorzy:
    Yablochnikov, E. I.
    Vasilkov, S. D.
    Andreev, Y. S.
    Pirogov, A. V.
    Tretyakov, S. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/406888.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optical products
    polymer lens
    simulation
    CAD/CAM/CAE
    technological process
    injection molding
    additive technologies
    cyber-physical systems
    Opis:
    The engineering management process and automation method for making pilot set of optical polymer parts used in LED systems are considered. Optical system and lens geometry development are realized in Zemax. 3D model and molding tools with further generating of NC coded data are developed in Cimatron E. Pre simulation of injection molding process is realized in Moldex3D and thermo-mechanical analysis is provided by OOFELIE. 3D printer Objet is used for parts prototyping on different stages of the process. Data and process management are realized with a help of PDM system SmarTeam.
    Źródło:
    Management and Production Engineering Review; 2015, 6, 4; 94-103
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Operations for improving the gas flow in the wellbore adjacent zone
    Autorzy:
    Sutoiu, F.
    Foidas, I.
    Avramescu, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/298643.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    natural gas resources
    well operations
    stimulation technologies
    perforations
    re-perforations
    acidizing
    nitrogen injection
    polymer injection
    skin factor
    recovery factor
    Opis:
    During the whole period of a natural gas reservoir exploitation, from the start of production until the total reservoir energy depletion, may apear some phenomena which by their nature can affect the natural gas flow from the layer into the well. The flow resistance greeted by gas in the adjacent borehole may have multiple causes. In the majority of cases, geological elements are those which definitive influence the behaviour in exploitation of those reservoirs, so the existence of some traps due to the continuity and discontinuity character of the porous-permeable medium or to some reservoir parameters with low values, drasticaly reduces the posibility of extraction of a bigger volume of geological gas resource. Also the exploitation performances of gas reservoirs, through different wells, are major affected because of the skin factor. This produces an increased flow resistance in the adjacent zone of the borehole which is a plus to the resistance caused by the hydrodynamic imperfection to the mode and open degree of the productive layer. During the maturity stage of natural gas reservoirs, a special attention is granted to prevention and control of this unwanted effects which may affect natural gas flow from the reservoir into the well, through different operations. The stimulation of these productive layers through different operations aiming the reduction of geological nature constraints, thereby become a complex approach having the finality the increasing of exploitation performances itself. In Romgaz were tested and are used a series of stimulation technologies of the productive layers. From there historic we conclude that perforations or re-perforations using deep penetration tools, acidizing and nitrogen injection are applied with success to the productive wells. Regarding the increasing of the recovery factor for wells with high water income or for wells with mixed flow regime or with water drive regime, were successfully tested the polymer injection technology that helps to maintaining or optimising the productive wells.
    Źródło:
    AGH Drilling, Oil, Gas; 2016, 33, 2; 531-547
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the gas recycling duration on the hydrocarbon recovery from gas condensate fields
    Autorzy:
    Matkivskyi, S.V.
    Burachok, V.
    Matiishyn, L.I.
    Powiązania:
    https://bibliotekanauki.pl/articles/24200594.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    gas condensate reservoir
    condensation of heavy hydrocarbons
    hydrocarbon recovery enhancement technologies
    cycling process
    dry gas injection period
    zbiornik kondensatu gazu
    kondensacja ciężkich węglowodorów
    technologie zwiększania wydobycia węglowodorów
    proces cykliczny
    okres wtrysku suchego gazu
    Opis:
    Purpose: Optimization of formation pressure maintenance technologies in the development of gas condensate fields with a high initial content of condensate in the reservoir gas using numerical modelling. Design/methodology/approach: A study on the efficiency of dry gas injection for pressure maintenance in gas condensate fields was performed with the help of numerical 3D models. Key technological indicators of the reservoir development were calculated for the dry gas injection period of 12, 24, 36, 48, and 60 months. The results are presented as plots for the parameters in a study. Findings: Based on the results of the studies, it was found that the introduction of dry gas injection technology ensures that reservoir pressure is maintained at the highest level compared to the development of gas condensate reservoirs on primary depletion. Due to this, further condensate drop-out in the reservoir is slowed down, and the production of partly already condensed hydrocarbons is ensured by their evaporation into the dry gas injected from the surface. The simulation results indicate that increase in the injection duration period leads to an increase of the cumulative condensate production and hence the final hydrocarbon recovery factor. Research limitations/implications: The heterogeneity of oil and gas deposits, both in terms of area and thickness, significantly affects the efficiency of the developed hydrocarbon enhancement technologies. In order to minimize the negative impact of heterogeneity, it is necessary to conduct additional studies on the conditions of specific reservoirs or fields. Practical implications: The reservoir pressure maintenance technology implementation according to various technological schemes, as well as using various types of injection agents, will significantly intensify the development of depleted gas condensate fields with a high condensate yield. Originality/value: Statistical analysis of the simulation results identified the optimum value of the dry gas injection period into the gas condensate reservoir, which is 34.3 months for the conditions of a given reservoir in the study.
    Źródło:
    Archives of Materials Science and Engineering; 2022, 117, 2; 57--69
    1897-2764
    Pojawia się w:
    Archives of Materials Science and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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