Autor: Kalus, P. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Transmisje promieniowania podczas rozpuszczania fulerenów w oleju transformatorowym
Transmissions of radiation during the dissolution of fullerenes in the transformer oil
Autorzy:: Kalus, P.
Zmarzły, D.
Tematy:: olej transformatorowy
fulereny
rozpuszczanie
transmisja
mieszanie
transformer oil
fullerene
dissolution
transmission
mixing; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Powiązania:: https://bibliotekanauki.pl/articles/274980.pdf Link otwiera się w nowym oknie
Opis:: Modyfikacja oleju transformatorowego jest stosowana w celu wyeliminowania zjawiska elektryzacji oleju. W Instytucie Elektroenergetyki Politechniki Opolskiej prowadzone są badania wpływu fulerenów na właściwości elektroizolacyjnych olejów transformatorowych. Problemami są długi czas rozpuszczania fulerenów w oleju oraz pomiar on-line stopnia rozpuszczenia. Do pomiaru stopnia rozpuszczenia zaproponowano pomiar transmisji promieniowania o paśmie od 400 nm do 560 nm. W artykule skupiono się na różnicach w transmisji różnych długości fal podczas pomiaru rozpuszczania fulerenów w oleju transformatorowym.
Modification of transformer oil is used to eliminate the electrification of oil. In the Institute of Electrical Power the Opole University of Technology, research is performed on the impact of fullerenes on the electrical properties of transformer oil. One of the problems is a long time of dissolution of fullerenes in the oil and the problem of on-line measurement of the degree of dissolution. To measure the degree of dissolution it was proposed to measure the radiation transmission band of 405 nm to 560 nm. The paper focuses on the differences in the transmission of different wavelengths during the measurement of dissolution of fullerenes in the transformer oil.
Dostawca treści:: Biblioteka Nauki

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Tytuł:: The problem of liquidation of the open eruption by drilling tools
Autorzy:: Bujok, P.
Fibinger, J.
Klempa, M.
Porzer, M.
Kalus, D.
Rado, R.
Tematy:: liquidation of open eruption
drilling tools
drill string; Pokaż więcej
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Powiązania:: https://bibliotekanauki.pl/articles/298940.pdf Link otwiera się w nowym oknie
Opis:: Drilling process of deep borehole consists of different drilling operations. Each of them can cause numerous different drilling problems especially when a borehole is performed. While drilling the most dangerous problems can occur once the drilling fluids (oil, gas or water) spontaneously flow out from the drilled formations into the borehole and then to the surface. It can also happen that the pressures in the borehole are not balanced and an influx of fluid into the borehole (a kick) will occur. If no action is taken to stop a kick once it begins, then the fluids will be pushed out of the borehole and will be flowing uncontrollably to surface (blow-out). Blow-out is prevented by closing off the well at the surface with special kind of valves (Blow-out Preventers - BOPs). When pressure control over the well is lost, swift action must be taken to avert the severe consequences. These consequences may include: — endangering of human life, — loss of rig and equipment, — negative influence on the environment, — additional costs of bringing the well under control again, — loss of reservoir production. In the case of kick or blow-out will occur in the practical use are different procedures and methods to control a borehole. These procedures and methods depend on the actual drilling operation scenario. One of them can be a tripping operation when the drill string is pulled out or run back again. In this case the drill string is open either after a break-out or before making up the drill pipes and drill collars. There is a variety of tools that can be used to prevent the formation of fluids rising up inside the drill pipes. One of this tool is a safety valve (rod preventers - BOP) to prevent the blow-out of the drill string. This manuał safety valve should be kept on the rig floor at all times. It needs to be a fuli opening ball-type valve so there is no restriction to flow. This valve is installed onto the top of the drill string if a kick occurs during a trip. However, this solution is quite inconvenient and difficult because involves special heavy tools, e.g. a crane. Drilling process of deep borehole consists of different drilling operations. Each of them can cause numerous different drilling problems especially when a borehole is performed. While drilling the most dangerous problems can occur once the drilling fluids (oil, gas or water) spontaneously flow out from the drilled formations into the borehole and then to the surface. It can also happen that the pressures in the borehole are not balanced and an influx of fluid into the borehole (a kick) will occur. If no action is taken to stop a kick once it begins, then the fluids will be pushed out of the borehole and will be flowing uncontrollably to surface (blow-out). Blow-out is prevented by closing off the well at the surface with special kind of valves (Blow-out Preventers - BOPs). When pressure control over the well is lost, swift action must be taken to avert the severe consequences. These consequences may include: — endangering of human life, — loss of rig and equipment, — negative influence on the environment, — additional costs of bringing the well under control again, — loss of reservoir production. In the case of kick or blow-out will occur in the practical use are different procedures and methods to control a bore¬hole. These procedures and methods depend on the actual drilling operation scenario. One of them can be a tripping operation when the drill string is pulled out or run back again. In this case the drill string is open either after a break-out or before making up the drill pipes and drill collars. There is a variety of tools that can be used to prevent the formation of fluids rising up inside the drill pipes. One of this tool is a safety valve (rod preventers - BOP) to prevent the blow-out of the drill string. This manuał safety valve should be kept on the rig floor at all times. It needs to be a fuli opening ball-type valve so there is no restriction to flow. This valve is installed onto the top of the drill string if a kick occurs during a trip. However, this solution is quite inconvenient and difficult because involves special heavy tools, e.g. a crane. This paper presents a new solution making use of special control equipment for the blowing open drill string. This equipment is based on a hydraulic press (named "Drill Pipę Rescue Press I") which has been developed by HBZS, MND S.A. Hodonin and VSB-Technical University of Ostrava, supported by Faculty of Drilling, Oil and Gas AGH-UST Kraków.
Dostawca treści:: Biblioteka Nauki

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