Browsing by Issue Date, starting with "2005"

Now showing 1 - 20 of 513

Access status: Open Access ,
Wyznaczanie położenia konturów złożowych dla złóż ropy naftowej i gazu ziemnego w oparciu o kryteria hydrodynamiczne
(2005) Wojna-Dyląg, Elżbieta; Zawisza, Ludwik
The size and shape of a hydrocarbon field are determined by geological boundaries of strata and surface of the contour. The location of contours depends on the flow of formation waters, reservoir properties of rocks and properties of reservoir fluids. The mapping method of hydrodynamic hydrocarbon traps presented in this paper to determine the site of the field contour and so the deposit boundaries for oil and natural gas. To define the field contours it is necessary to work out a structural map of water-oil-bearing horizon, potentiometric map for reservoir water, map of specific gravity for reservoir water, map of specific gravity of oil in reservoir conditions, map of porosity, map of permeability and map of capillary pressures. Then the methodics presented in the paper should be applied. The procedure lies in performing some simple algebraic operations on maps. The realization of the discussed methodics is presented on the example of the oil field Czerwieńsk, in the Main Dolomite strata in the Fore-Sudetic area.
Access status: Open Access ,
Active control of vibrations of a three-axis gyroscopic platform on board of a flying object
(Wydawnictwa AGH, 2005) Koruba, Zbigniew; Styczeń, Jerzy
The work presents an algorithm for active control of vibrations of a three-axis gyroscopic platform during pre-programmed and stabilised operation on board of a flying object. The considerations focus on disturbances resulting from the flying object manoeuvres and short-duration pulses of external forces under the conditions of friction in the bearings and non-linear platform operation range.
Access status: Open Access ,
Charakterystyki łuku plazmotronów spektrometrycznych
(2005) Sawicki, Antoni; Kruczinin, Anatolij Michajłowicz
W artykule sformułowano warunki brzegowe modelu łuku w plazmotronie spektrometrycznym bez wymuszonego przepływu gazu. Podano sposób przeliczania charakterystyk eksperymentalnych na warunki pracy plazmotronu z różnymi gazami plazmotwórczymi. Przedstawiono obliczone charakterystyki elektryczne i cieplne części cylindrycznej i stożkowej łuku ściśniętego zimnymi ściankami.
Access status: Open Access ,
Wpływ sposobu wyznaczenia poprawki kalibracyjnej na określane przewyższenie
(Wydawnictwa AGH, 2005) Frukacz, Mariusz
In this paper, the author presents the methods of determination of a calibrating correction of the precise leveling results. The purpose of the statistical experiment which was carried out, was to generate randomly the results of levelling as well as determine the calibrating corrections in four ways. It was observed that different ways of calculating this correction may cause the occurrence of systematical errors. The values of other corrections, for example correction for refraction, in this experiment was calculated for comparison.
Access status: Open Access ,
Modern technologies of heat production as an opportunity for coal
(Wydawnictwa AGH, 2005) Kurczabiński, Leon; Łój, Roman
Coal Holding Katowice produces best quality typical steam coal. For several years it has cooperated with manufacturers of modern coal boilers for whom it provides coal of appropriate granulation. This article presents a description of modern heat production technologies based on coal and designed for small and medium-size users. These technologies allow the cheapest heat production while the standing standards of toxic substances' emission are complied with. The article describes the directions of actions undertaken by Coal Holding Katowice to promote efficient and ecological high quality coal combustion technology, which give coal an opportunity to maintain its position in the market, as prices of other energy carriers are high.
Access status: Open Access ,
Dokumentacja rozgraniczenia nieruchomości w procesie ustalania stanu prawnego gruntu
(Wydawnictwa AGH, 2005) Kwartnik-Pruc, Anita
The paper presents an analysis of geodetic-legal regulations connected with the delimitation of a real estate, in the light of documentation arising in this process. This documentation is included in the national geodetic and cartographical resources, which are the basics of title boundary reestablishment. The paper deals with present legal bases, since 1946, of the proceedings of ground real estate delimitation, composition of documentation, arising from this process, and changes with the administration responsible for this delimitation.
Access status: Restricted ,
Fundamentowanie
(Oficyna Wydawnicza Politechniki Warszawskiej, 2005) Grabowski, Zbigniew; Pisarczyk, Stanisław; Obrycki, Marek
Access status: Open Access ,
Badania korozyjności cieczy nadpakerowych na bazie chlorku sodu w warunkach dopływu siarkowodoru
(2005) Bielewicz, Danuta; Wysocka, Marta; Wysocki, Sławomir
The authors present the results of experiments oriented to determining the corrosiveness of over-packer $Na-Cl$-based fluids, saturated with hydrogen sulfide, in the area of the BMB field, as well as the selection of the most efficient corrosion inhibitor. The experiments concentrated on the measurement of $H_{2}S$, pH and corrosiveness of over-packer fluids saturated with hydrogen sulfide at temperature 60 and 80 Celsius degrees. The experiments were conducted for two types of solutions: $NaCl$ and $NaCl+CMC LV$, with the initial pH mpos 10 and 12. Analogous experiments were performed for the above fluids after adding three corrosion inhibitors. The analysis of the results showed that the lowest corrosiveness in the hydrogen sulfide conditions at a temperature of 80 Celsius degrees was obtained for the $NaCl$-based fluid with CMC LV and admixture of the corrosion inhibitor ANTYKOR PP with the initial pH = 12.
Access status: Open Access ,
Źródła dwutlenku węgla w Polsce dla zaawansowanych technik wydobycia ropy naftowej
(2005) Tarkowski, Radosław; Uliasz-Misiak, Barbara
The article presents possibilities of gaining CO2 from large point sources of emission in Poland for enhanced oil recovery by underground injection of this gas. This technology has been used for decades, especially in the USA, where natural and anthropogenic gas is used. In Poland due to little reserves and natural gas production, anthropogenic CO2 for EOR process could be used. The biggest CO2 emitters are presented (above 500 Gg/year), basic technological process which produce the gas, industrial plants locations, concentration of carbon dioxide in flue/industrial gases are characterized. Economical and environmental aspects of using CO2 for EOR are underlined. Location of the biggest CO2 emitters was defined in connection with hydrocarbon reservoirs location which have various sizes and stags of exploitation.
Access status: Open Access ,
Wpływ współczynnika wodno-cementowego na parametry technologiczne świeżych zaczynów sporządzonych na osnowie cementów wieloskładnikowych
(2005) Stryczek, Stanisław; Gonet, Andrzej; Wiśniowski, Rafał
By the close of 2004, a production of very economic multicomponent cements with high fly ash content, ground, granulated blast-furnace slags and low klinker content. Set sealing slurries made from multicomponent cements have a specific phase composition and a suitable microstructure, providing a warranty of highest exploitation durability. The results of experiments on fresh sealing slurries made from multicomponent cement CEM V/A - 32.5 of different water-to-cement ratios are presented in the paper. Special attention has been paid to the influence of the water-to-cement ratio on rheological model and its parameters.
Access status: Open Access ,
Solidification conditions of gray and white cast iron. Part I, Theoretical background
(2005) Fraś, Edward; Górny, Marcin; López, Hugo F.
The present work is based on a heat balance during the solidification of cast iron. Accordingly. an analytical expression was derived to relate the chilling tendency (CT) of cast iron with nucleation and growth processes associated with eutectic graphite and cementite constituents. A relationship is found between the CT and factors such as the physical-chemical state of liąuid, the distribution of nucleation sites, and the density of nucleation sites for eutectic grains. In particular, it is found that the casting modulus (M), enabling determinations of minimum wali thickness for chilled castings or chill widths in wedge shaped castings can be related to the CT. Finally, the present work provides a rationa-lization for the effect of technological factors such as the chemistry of the melt, inoculation practice. holding temperaturę and time on the resultant CT and chill of the cast iron.
Access status: Open Access ,
Podobieństwa i różnice w zakresie statyki sekcji obudów ścianowych
(Wydawnictwa AGH, 2005) Losiak, Stanisław; Ptak, Jan; Blaschke, Janusz
In the paper schemes of basic group of supports with distribution of loads for three types of units have been presented. It has been demonstrated that schemes with load distribution may be reduced to one collective scheme and a common mathematical description for various types of units may be presented. Application of the common description for testing the characteristics of the units of the same type were discussed. In general, equations for determining the static parameters of the support unit with stretcher cylinder were given. Static-stability characteristics of such a support unit on the basis of exemplary characteristics determined from mathematical description were discussed.
Access status: Open Access ,
Analiza techniczna i ekonomiczna rekonstrukcji czerpaków dla koparek kołowych SCHRS 4000 urabiających caliznę w KWB «Bełchatów»
(Wydawnictwa AGH, 2005) Badura, Sławomir; Łopata, Antoni Mieczysław
The paper presents technical and economical analysis of the reconstruction for symmetrical and asymmetrical bucket mounted on the bucket wheel excavators SchRs 4000 in the targets to dredging mineral.
Access status: Open Access ,
Semiactive control strategies for a fully suspended bicycle
(Wydawnictwa AGH, 2005) Plaza, Krzysztof
The purpose of this work is to present methods for designing semiactive vibration systems, which include mathematical models of vibrating structures. Thus aspects of model building, identification and verification are described in the paper as well as determination of the performance indices, choice of the damping technique, shock absorber modeling and algorithm selection. The article presents a semiactive vibration system analysis of a fully suspended bicycle. For all of the simulation experiments and serving as a reference for the identification experiment a phenomenological model of the bicycle was developed in the Simulink environment. The model was confronted with the real time experiments, which were conducted with the help of an electrical system. The necessity of the discussion of the various performance indices is underlined. Simple control strategy is tested on the bicycle.
Access status: Open Access ,
Złoża surowców mineralnych i zmiany środowiska naturalnego wywołane przez górnictwo na terenie Bukowna
(Wydawnictwa AGH, 2005) Wójcik, Andrzej J.; Chmura, Janusz
Complicated geological structure characterise the area of research. Big geological units in this region (Upper Silesian Coal Basin, Cracow Monocline) are separated by big and deep fault zone (Sławków Trough). Exploitation of natural resources existing in this area (zinc and lead ores, quaternary formations of sand) has led to enormous changes in the environment. As a result of restricting and finally closing down mining (zinc ores and sand mines) the area gradually regains its natural as well as tourist and recreational value. There are also a few places in the town especially distinguished to preserve them in unchanged form (i.e. Sztoła River Valley, Diabla Góra Hill).
Access status: Open Access ,
Sposoby wyznaczania głębokości położenia przewodów podziemnych różnymi lokalizatorami elektronicznymi
(Wydawnictwa AGH, 2005) Sołtys, Marian
The paper presents methods for determination of depth of underground metallic and nonmetallic utilities, using multifunctional electronic locators and additional accessories, like electromagnetic markers, location tapes and transmitting probes. Results of practical experiments are discussed. An accuracy assessment of automatic depth surveys using modern locators are given. The range and accuracy of utility depth determination with chosen locators, markers and probes are presented.
Access status: Open Access ,
Wpływ czasu eksploatacji świdrów gryzowych na mechaniczne parametry technologii wiercenia otworów
(2005) Rzyczniak, Mirosław; Jóźwiak, Andrzej
An attempt was made to answer the question of whether or not in a given span of time it is possible to observe significant changes in the values of mechanical parameters of borehole drilling technology in a given geological region. To solve this problem, the changes of axial stress, rotary velocity and multiplication of axial stress and rotary velocity for selected types of cogged-bits were analysed with the use of statistical mathematics methods. The analyses were made for drilling tools exploited in the years 1993 to 2000 for drilling in the Miocene strata near Tarnów, Poland. Equations of simple regressions were determined and significance tests for correlation coefficients and linear regression coefficients were carried out with the objective to assess the strength of dependence between the analysed parameters.
Access status: Open Access ,
Normatywna erozja - uwagi o patologii procesu legislacyjnego w systemie politycznym III RP
(Wydawnictwa AGH, 2005) Borkowski, Robert
The present paper discusses weakness of state and pathology in legislation. Polish system of law is corrupted by hyperregulation, disintegration and weakness of government in legislation process. Such defects resulted from historical background. From XVIII century there were the times of partitions, German ocupation and communist regime. Even nowadays people in Poland are more interested in their privacy than in development of civil society. For that reason there is still low position of law in social order.
Access status: Open Access ,
Hydrodynamiczne modelowanie basenów osadowych na przykładzie basenu permskiego monokliny przedsudeckiej
(2005) Zawisza, Ludwik; Piesik-Buś, Wacława
Theoretical fundamentals of modelling and hydrodynamic classification of sedimentary oil basins are presented in the paper. Hydrodynamic classification of oil basins is based on the effects differentiating the liquid phase, especially the movement of reservoir fluids. Definition of this type of hydrodynamic basin lies in determining its development stage at present: before, during or after the invasion of infiltration waters. Bearing in mind data of reservoir pressures distribution, directions and flow rates of groundwaters, as well as properties of reservoir fluids, three main types of sedimentary basins have been distinguished: juvenile (centrifugal), transient (centripetal) and mature (static). Physical phenomena and interrelations taking place between accumulated hydrocarbons and the accompanying reservoir waters and pressures predestine the first type as most perspective; the third type is usually eliminated as non-perspective. The so far final results of hydrodynamic analyses for the Permian basin in the Fore-Sudetic Monocline prompt the conclusion that the basin is a very perspective juvenile (centrifugal) basin.
Access status: Open Access ,
Morfotektonika przełomów Solinki i Wetlinki w świetle badań terenowych i interpretacji zdjęć lotniczych (Bieszczady Wysokie)
(Wydawnictwa AGH, 2005) Kuśmierek, Jan
Gorge-type valleys of the Solinka and Wetlinka rivers within the Upper San drainage basin represent an interesting geotouristic object in respect of distinct relationship between relief, and evolution and tectonics of complex geological structures in the foreland of the Dukla Unit in the Bieszczady Mts. They also distinguish themselves by picturesque landscapes and vast exposures of the Otryt Sandstone outcrops, this Late Oligocene member is typical of the Bieszczady facies subregion of the Silesian Nappe. Detailed cartographic and structural investigations made by the author have proved that synclines, composed of thick complexes of the Otryt Sandstones, are backward overthrust onto subsurface structural elements, a feature which has not been reflected in previous cartographic elaborations. With formation of the disharmonic tectonic structures, the inversional character and origin of the Solinka and Wetlinka water gaps are connected. Hypsometric measurements of relics of the foothill and riverside planation surfaces, carried out on stereoscopic aerial photographs, have documented significant deformation of the surfaces and oscillatory character of the Pliocene-Quaternary neotectonic uplift. The greatest denivelations of the planation surfaces correlate with the intersection of the backward overthrusts which had crucial effects on tectonic reshaping of the structures, as well as on the relief development, this resulted in the origin of the antecedent water gaps and incised meanders.