Wiertnictwo, Nafta, Gaz
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ISSN 1997-2011
e-ISSN: 2300-7044
Issue Date
2009
Volume
T. 26
Number
Nr 4
Description
Journal Volume
Wiertnictwo, Nafta, Gaz
T. 26 (2009)
Projects
Pages
Articles
Wpływ efektu skali na wyniki badań przepuszczalności porowatych ośrodków gruntowo-skalnych
(2009) Drożdżak, Ryszard; Twardowski, Kazimierz
The most important factors describing the observed variability of results of tests on physical properties of rock--ground porous media are described in this paper. The measurement scales are used to quantitatively characterize the rock mass. The principles and conditions of effective homogenization of porous media, enabling their description on mesoscopic scale were discussed. The influence of the so-called scale effect on the results of tests on physical properties of porous media was presented on the example of evaluation of permeability of ground and rocks, with emphasis on the coefficient of ground filtration. The differentiation of the obtained evaluation was shown in view of employed techniques and research methods, mainly laboratory and field ones.
Zastosowania nowoczesnego próbnika złoża typu Inflatable produkcji firmy Baker-Lynes w inżynierii otworowej i złożowej
(2009) Dubiel, Stanisław; Złotkowski, Albert
Novel drill stem testers Inflatable by an American company Baker-Lynes are widely applicable to borehole and reservoir engineering. Testing techniques and technologies based on industrial experience (since 1992) of the Polish Oil and Gas Prospecting Company, Cracow are presented in the paper. The DST selection principles in view of geologic conditions and technical state of the borehole are also discussed.
Badania laboratoryjne adsorpcji wybranych substancji ropopochodnych na fazie stałej gruntu
(2009) Fąfara, Zbigniew; Szuflita, Sławomir
The cognition of parameters of mathematical model, describing the properties of porous medium and the migrating fluids is necessary for adequate modelling of migration of oil-contaminations in the soil layer of the ground. One of the basic processes shaping the course of hydrocarbons migration in the ground is adsorption of oil products in the solid phase of the ground. It determines the range of penetration of the porous medium by oil products and delay of its migration. Specialist literature does not give exact figures illustrating the level of adsorption in various types of the ground. The presented values are usually average adsorption values, which is used for numerical modelling of oil products migration in the ground, thus consciously introducing an inadequate source of the description. Hence, the Authors designed a laboratory post for analyzing the coefficient of hydrocarbons adsorption, making measurements for four naturally selected different models of homogeneous loose ground medium. The coefficient of heterogeneity stays in the interval 1.4-1.7, whereas the efficient diameter varies from 0.3 mm to 2.7 mm. The prepared physical models represent fine, medium and coarse gravels and sands. Typical oil products were used for the experiments, i.e. Pb-free ethyline and diesel oil. The obtained results have been discussed in view of the future mathematical models of hydrocarbon adsorption worked out depending on ground properties, especially of grain composition. The existing mathematical models of hydrocarbon adsorption on solid phase of the ground relate this coefficient only with the organic matter and/or clayey fraction content.
Issues and interpretations of the ignition risk rised from mechanical sparks in explosive atmospheres
(2009) Jurca, Adrian; Vătavu, Niculina; Sicoi, Sorin; Lupu, Leonard; Păun, Florin
The potential explosive zones are those industrial areas where there is a risk to be produced a mixture of air with gas, vapors, mists or combustible dust which can be ignited by the different ignition sources, resulting explosions which can produce life losses. The metallic materials of the equipment case or their components, from industrial installation, can become ignition sources by mechanical sparks and/or hot surfaces. The authors had identified and analyzed the ignition capacity by mechanical sparks on the main metallic materials and had established original solutions to prevent ignition of the explosive atmospheres.
Rozpoznanie zanieczyszczenia wód podziemnych węglowodorami aromatycznymi w rejonie stacji paliw PKN ORLEN Kielce-Białogon
(2009) Knez, Janusz; Knez, Dariusz
Petrochemicals released from ZGPN CPN caused contamination of underground water. Benzene is most representative part and for this reason its paths were investigated. To prove simulation results wellbore was drilled and water samples were investigated. Laboratory measurements confirms computer simulation results.