Temat: pore space - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Effects of petroleum pollution on clay soil microstructure
Autorzy:: Trzciński, Jerzy
Izdebska-Mucha, Dorota
Opis:: In the paper, microstructural changes of clay soil – glacial till – caused by in-situ pollution with diesel oil are presented. STIMAN software was used for a quantitative analysis of scanning electron microscope-based photographs. As a result of pollution, the microstructure underwent substantial qualitative changes: the packing of particles and clayey microaggregates decreased and part of the microaggregates disintegrated, edges and corners of some clay particles were warped and the amount of intermicroaggregate pores and edge-to-face (EF) contacts among clay microaggregates increased. Diesel oil pollution entailed significant quantitative changes in the till pore space. The amount of mesopores, the maximum and average pore area, the maximum, minimum and average pore perimeter and the maximum and average pore diameter grew markedly while the value of the total pore perimeter decreased. As indicated by the drop of the microstructural anisotropy index and the amount of fissure pores as well as the growing average form index, the polluted clay became more isotropic. These changes might be due to the reduction of interparticle forces upon pollution with a fluid characterized by a dielectric constant lower than water.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Abiotic mechanisms for biochar effects on soil N2O emission
Autorzy:: He, C.
Manevski, K.
Andersen, M.N.
Hu, C.
Dong, W.
Li, J.
Tematy:: gas diffusion
mitigation
nitrous oxide
water
filled pore space; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/2082642.pdf Link otwiera się w nowym oknie
Opis:: In this research, sterile soil columns with different contents of biochar made from apple-tree residues (0, 1 and 5% w/w) at three levels of water filled pore space (40, 60, and 80%) were set up in the laboratory to study nitrous oxide diffusion and binding processes. The results indicated that nitrous oxide emission can be effectively mitigated at 5% biochar regardless of soil water content. However, 1% biochar stimulated nitrous oxide diffusion compared to the other biochar treatments, which was opposite to expectations due to the stronger aeration than adsorption effect, while 0% had a suppression effect between 1 and 5%. Nitrous oxide emissions increased with increasing water filled pore space due to concomitantly decreasing biochar tortuousity at high water content. The increase of nitrogen from 1.11 to 1.50% on the biochar surface in the 5% treatment, and from 1.11 to 1.46% in the 100% biochar treatment, suggested that the main abiotic mechanisms for mitigation of nitrous oxide emission is adsorption and subsequent reactions with C = C bonds on appletree biochar surfaces since C = O and C-O bonds both increased and C=C/C-C/C-H declined.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Porowatość wapieni jurajskich w profilu pionowym rejonu ujęcia Łobodno k. Kłobucka
The porosity of the Jurassic limestones in the vertical profile Łobodno water intake area near Kłobuck
Autorzy:: Nikiel, G.
Sobik-Szołtysek, J.
Tematy:: porowatość
przestrzeń porowa
wapienie jurajskie
porosity
pore space
jurassic limestones; Pokaż więcej
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/2075451.pdf Link otwiera się w nowym oknie
Opis:: The article presents the results of investigations the porosity of the limestone of the Upper and Middle Jurassic. The open porosity was tested on samples cut from the core in the borehole of the P-1 with a depth of 80 m which was drilled in the groundwater intake Łobodno near Kłobuck. For testing were prepared 59 samples from 23 ranges a depth. Examination of open porosity were made using hydrostatic weighing the samples saturated with water in in a vacuum chamber. The tests which were conducted show a large variability of the open porosity of the Jurassic limestone in the vertical profile containing in the range of 4–24%.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Wizualizacja przestrzeni porowej skał z wykorzystaniem mikrotomografii rentgenowskiej
Visualization of pore space using Roentgen microtomography
Autorzy:: Zalewska, J.
Dohnalik, M.
Tematy:: mikrotomografia
wizualizacja
przestrzeń porowa
piaskowce
microtomography
visualization
pore space
sandstones; Pokaż więcej
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Powiązania:: https://bibliotekanauki.pl/articles/183670.pdf Link otwiera się w nowym oknie
Opis:: Roentgen computed microtomography (micro-CT) allows visualizing internal structure of measured objects determined by density differences. Micro-CT measurements enable obtaining of many parallel 2D cross sections, which allows to project in 3D particular properties. Main micro-CT applications are porosity measurements and visualizations. The paper shows first results of measurements and imaging of rock porous space, using micro-CT method.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Diagenesis and reservoir properties of the Middle Miocene sandstones in the Polish segment of the Carpathian Foredeep
Autorzy:: Kozłowska, A.
Kuberska, M.
Maliszewska, A.
Tematy:: sandstones
diagenesis
pore space
reservoir properties
Upper Badenian
Sarmatian
Carpathian Foredeep; Pokaż więcej
Wydawca:: Polskie Towarzystwo Geologiczne
Powiązania:: https://bibliotekanauki.pl/articles/191666.pdf Link otwiera się w nowym oknie
Opis:: The Upper Badenian and Sarmatian sandstones from eight wells of the Carpathian Foredeep Basin have been studied. The following research methods were used: petrographic analysis with the use of polarizing microscope (staining analysis, cathodoluminescence studies – CL, porosity determinations, fluid inclusion ana- lysis), scanning electron microscope (SEM) investigations and energy dispersive spectrometer studies (EDS ISIS), X-ray diffraction analyses (XRD), isotopic analysis and petrophysical studies. The sandstones are very-fine to medium-grained subarkosic and sublithic arenites and wackes. The main components of the sandstone grain framework are quartz, feldspars (potassium feldspar and plagioclase), lithoclasts (fragments of carbonate rocks, clastic rocks, granitoids, volcanic rocks and quartz-mica schists) and micas (mainly muscovite). Bioclasts (mainly foraminifera), glauconite, ooids, organic matter and accesory minerals are subordinate. Pore spaces between the grains are filled by matrix and by cement (mostly Fe-calcite, quartz overgrowth, dolomite, siderite and kaolinite). The Middle Miocene sandstones show good and very good filtration abilities. Sandstones porosity very often exceeds 20% and permeability is above 100 mD. Primary intergranular porosity is considerably more frequent than secondary intragranular porosity (mainly dissolution of feldspar grains) and intercrystalline porosity (clays microporosity). Effects of the following diagenetic processes can be observed in the sandstones: compaction, cementation, dissolution, replacement and alteration. Primary porosity reduction in sandstones was predominantly caused by mechanical compaction by about 26% and cementation, mainly by calcite, by approximately 35% on the average. Some increase in porosity was caused by dissolution of detrital grains, mainly feldspars, and decay of the soft parts of organisms. Diagenetic and related reservoir properties evolution of the Middle Miocene sand- stones have been accomplished during eo- and mesodiagenesis.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Some problems of liquid flow in porous media
Zagadnienia przepływu cieczy w ośrodku porowatym
Autorzy:: Skawiński, R.
Tematy:: nonlinearity of flow in porous media
velocity field in pore space; Pokaż więcej
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Powiązania:: https://bibliotekanauki.pl/articles/281350.pdf Link otwiera się w nowym oknie
Opis:: In the paper theoretical considerations and results of experimental investigations into a liquid flow in porous media are presented. Since the first experiments with such a flow, made by Darcy in 1856, much research work in this field has been done. The flow of liquid in a porous medium is essentially nonlinear (with the permeability depending on flow velocity). The autor reviews the research into this nonlinearity and experimental investigations into a liquid flow in a pore space made in the last 125 years and reports on the experimental investigations into the velocity field in a pore space carried out at the Strata Mechanics Research Institute in Cracow.
W publikacji przedstawione są rozważania i wyniki eksperymentalnych badań przepływu cieczy w ośrodkach porowatych. Od pierwszych eksperymentów H. Darcy'ego w 1856 r. Wykonane było wiele prac badawczych tego zagadnienia. Najważniejsze z tych prac są cytowane i omówione w niniejszym artykule. Wynikiem tych prac jest stwierdzenie, że przypływ cieczy w ośrodkach porowatych jest z natury nieliniowy, to znaczy przepuszczalność w tym przepływie jest zależna od prędkości przepływu. Hydrodynamiczne przyczyny tej nieliniowości, czyli znaczący udział sił bezwładności w tym przepływie prowadzący do zmian pola prędkości w przestrzeni porowej, omówiony jest w niniejszej publikacji na podstawie badań eksperymentalnych, przede wszystkim wykonanych w Instytucie Mechaniki Górotworu w Krakowie. W końcowych komentarzach w publikacji zestawione są fakty i poglądy dotyczące przyczyn zmian przepuszczalności w przepływach wody w naturalnych ośrodkach porowatych, czyli w skałach, przede wszystkim w skałach osadowych.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Reservoir parameters of lithostratigraphic successions of the lower Paleozoic strata in the Polish part of the Baltic region based on laboratory studies and well logs
Autorzy:: Semyrka, G.
Jarzyna, J.
Pikulski, L.
Kamierczuk, M.
Semyrka, R.
Tematy:: Baltic Region
Lower Paleozoic
petrophysical parameters
pore space
porosimetry
well logging; Pokaż więcej
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/2059064.pdf Link otwiera się w nowym oknie
Opis:: For lithostratigraphic successions of the lower Paleozoic strata in the Polish part of the Baltic Sea between the Slupsk Block and Courland Block, assessment of petrophysical properties was carried out with the use of mercury porosimetry and well logging results. The porosimetric measurements allowed to determine critical rock parameters and to distinguish genetic types of reservoirs. To complete the information on reservoir parameters, available well logs were used. The logs allowed identification of Cambrian strata in boreholes and the distinguishing of several lithostratigraphical units. Results of the porosimetric measurements demonstrated the strongly heterogeneous character of the pore space in the Cambrian rocks, with generally very weak reservoir properties. Fractured and porous-fractured rock space is a principal feature here. Well log anomalies confirmed the diversified lithological development of the Cambrian profile and the somewhat better reservoir parameters of rocks of the Paradoxides paradoxissimus Superzone and the shaly character of the Eccaparadoxides oelandicus Superzone. From the point of view of volumes of potential hydrocarbon accumulations, the capacity of the Cambrian deposits is low, but this is a basic feature of reservoir rocks with fractured and fractured-porous space.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Petrographic characteristic of the Middle Miocene sediments in the Ukrainian segment of the Carpathian Foredeep
Autorzy:: Kuberska, M.
Kozłowska, A.
Lis, P.
Tematy:: siliciclastic rocks
diagenesis
pore space
Upper Badenian
Sarmatian
Carpathian Foredeep
Ukraine; Pokaż więcej
Wydawca:: Polskie Towarzystwo Geologiczne
Powiązania:: https://bibliotekanauki.pl/articles/191411.pdf Link otwiera się w nowym oknie
Opis:: The Upper Badenian and Sarmatian strata from thirteen wells situated in the Ukrainian part of the Carpathian Foredeep were petrographically analysed. The studies were performed using a polarizing microscope (standard petrographic analysis, cathodoluminescence studies – CL), SEM and EDS ISIS. Moreover, the XRD was conducted, isotopic ratios of light isotopes of carbon and oxygen in carbonate cements determined, and porosimetric measurements performed on selected samples of sandstones. Claystones, mudstones and sandstones were distinguished among the studied rocks. The sandstones were examined in great detail. The following sandstone varieties were distinguished: unequal-grained, fine-, and rare medium-grained. They are classified as arenites and subarkosic, locally sublithic and quartz wackes. Quartz and feldspars (K-feldspars, plagioclases) are main components of the grain fabric of mudstones and sandstones. Rock fragments (of sedimentary, less common effusive rocks, individual fragments of granitoids and/or metamorphic rocks) occur in the sandstones, too. Micas (mainly muscovite), glauconite, rare bioclasts, fine plant remnants, and accessory zircons are present. The cement is composed of allogenic-and authigenic clay minerals (illite, smectite, chlorites, kaolinite), carbonates (Fe-calcite, dolomite, ankerite), authigenic quartz and, sporadically, authigenic feldspar and anhydrite. Effects of diagenetic processes, mainly of mechanical compaction, cementation, dissolution, and less significant replacement and alteration have been recorded in the sediments studied. The compaction and cementation have almost an equal influence on reduction of porosity and permeability of the analysed rocks. Abundant sandstone packages, however, display very good reservoir properties (porosity amounts to 30%, and permeability is over 200 mD).
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Wpływ transformacji lessu na cechy filtracyjne
The impact of loess transformation on its filtration characteristics
Autorzy:: Afelt, A.
Tematy:: less
filtracja
przestrzeń porowa
wymiar fraktalny
loess
filtration
pore space
fractal dimension; Pokaż więcej
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/2062271.pdf Link otwiera się w nowym oknie
Opis:: Przeanalizowano cechy ilościowe i przeprowadzono analizę stopnia uporządkowania przestrzeni porowej (wymiar fraktalny) lessów świeżych oraz przekształconych filtracyjnie. Wykazano powiązanie między słabą wodoprzepuszczalnością lessu świeżego, a procesem formowania retencji powierzchniowej w wymoku i wynikające z tego konsekwencje dla cech mikrostrukturalnych lessu. Wskazano wymoki, jako strefy preferencyjnej filtracji na obszarach lessowych.
The quantitative characteristics have been analysed and the analysis of the degree of the pore space structure (fractal dimension) of natural and transformed loesses has been conducted. The relation between poor water permeability and retention in closed depressions has been prooved and thus the consequences of that for microstructural characteristics of loess has been revealed. Closed depression has been identified as the areas of preferential filtration in loess areas.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Fractal analysis of sandstone pore space geometry
Autorzy:: Figiel, M.
Lewandowska-Śmierzchalska, J.
Tematy:: pore space
fractal structure
fractal dimension
lacunarity
thin-section
computer image analysis; Pokaż więcej
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Powiązania:: https://bibliotekanauki.pl/articles/298840.pdf Link otwiera się w nowym oknie
Opis:: Fractal analysis is currently one of the fastest evolving branches of science. Numerous objects in nature exhibit a fractal structure. Additionally, the vast majority of rocks – especially reservoir rocks – take the form of a fractal. Computer image analysis based on thin-section images has been used for examining the fractal structure of pore spaces, directly applying the definition of the fractal box-counting dimension. For the examined sandstone sample, thin sections were made and photographed, and the corresponding values of the fractal dimension and lacunarity were calculated. Each of the photos was encompassed by porosity that was calculated based on the number of pixels. Furthermore, the volatility of the fractal dimension and lacunarity were studied as well as their relationships with the porosity. A correlation analysis between the fractal parameters and the porosity was carried out. The results were compared with the data obtained from a mercury porosimetry of the same sample of sandstone.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Informacja

Wyszukujesz frazę "pore space" wg kryterium: Temat