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    Wyświetlanie 1-4 z 4
    Tytuł:
    Podział skały zbiornikowej na jednostki o jednakowych właściwościach hydraulicznych w celu dokładniejszego wyznaczania przepuszczalności podczas modelowania przepływów w złożu gazu
    Hydraulic units differentiated in reservoir rock to facilitate permeability determinations for flow modeling in gas deposit
    Autorzy:
    Jarzyna, J.
    Ha Quang, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074649.pdf
    Data publikacji:
    2009
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    zapadlisko przedkarpackie
    parametry zbiornika
    FZI — Flow Zone Index
    HU — Hydraulic Unit
    modelowanie przepływów
    Eclipse® (Schlumberger)
    reservoir parameters
    Flow Zone Index (FZI)
    hydraulic unit (HU)
    flow modeling
    Carpathian Foredeep
    Opis:
    Petrophysical parameters such as porosity and permeability and bulk density are input data for modeling hydrocarbon flow in reservoirs with the use of Eclipse® program (Schlumberger). The modeling is preceded by preliminary works comprising division of reservoir into hydraulic (flow) units, HU, and their characterization by geometrical and geological factors. Flow Zone Index, FZI, is a factor enabling easier description of movement of media in pore space only on the basis of combination of permeability and porosity. Then, HUs are determined on the basis of FZIs. The tested gas deposit belonged to a group of typical Miocene reservoirs from the Polish part of the Carpathian Foredeep. In this deposit, gas accumulations are related to deltaic sediments represented by sandstone and mudstone layers of various thickness, and heterolites with claystone, mudstone and sandstone intercalations. In the case of this deposit, the wealth of laboratory data made possible credible differentiation of FZI and HU. The tested methodology can also be applied to investigations of reservoirs bearing potable, mineral and geothermal water as well as those used for storage of sequestrated carbon dioxide.
    Źródło:
    Przegląd Geologiczny; 2009, 57, 11; 996-1003
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variability of the Rotliegend sandstones in the Polish part of the Southern Permian Basin - permeability and porosity relationships
    Autorzy:
    Jarzyna, J.
    Puskarczyk, E.
    Bała, M.
    Papiernik, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/191899.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Rotliegend sandstones
    porosity
    permeability
    Flow Zone Index
    FZI
    facies
    Opis:
    The Flow Zone Index, FZI, applied to order relations between the effective porosity and permeability of the Rotliegend sandstones in the Polish part of the Southern Permian Basin turns out to be a useful and effective factor to evaluate ability of media flow in a rock formation. A dataset of over 2000 samples from 78 wells was analysed. Based only on porosity and permeability, FZI includes all non-parameterized features of rocks as tortuosity and diameters of porous channels, volume of trapped parts of capillary roads, specific surface of pore space, and others. When FZI increases, the ability of fluid to move through the porous space increases. In most cases, the Rotliegend sandstones reveal FZI in the range of 0.5-2.0. The highest FZI, ca. 100, is related to fractured part of the studied formation. The combination of FZI and facies information from several wells in the study area (over 1200 samples) showed a good correlation. On the basis of FZI we can divide a set of samples of the Rotliegend sandstone into groups of defined fluid flow abilities and relate them to facies. Also, we show the way of estimation of the reliable values of permeability in full geological log of a borehole on the basis of FZI, and the total porosity determined from well logging interpretation.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2009, 79, No 1; 13-26
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variability of the Rotliegend sandstones in the Polish part of the Southern Permian Basin - permeability and porosity relationships
    Autorzy:
    Jarzyna, J.
    Puskarczyk, E.
    Bała, M.
    Papiernik, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/191479.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Rotliegend sandstones
    porosity
    permeability
    Flow Zone Index
    FZI
    facies
    Opis:
    The Flow Zone Index, FZI, applied to order relations between the effective porosity and permeability of the Rotliegend sandstones in the Polish part of the Southern Permian Basin turns out to be a useful and effective factor to evaluate ability of media flow in a rock formation. A dataset of over 2000 samples from 78 wells was analysed. Based only on porosity and permeability, FZI includes all non-parameterized features of rocks as tortuosity and diameters of porous channels, volume of trapped parts of capillary roads, specific surface of pore space, and others. When FZI increases, the ability of fluid to move through the porous space increases. In most cases, the Rotliegend sandstones reveal FZI in the range of 0.5-2.0. The highest FZI, ca. 100, is related to fractured part of the studied formation. The combination of FZI and facies information from several wells in the study area (over 1200 samples) showed a good correlation. On the basis of FZI we can divide a set of samples of the Rotliegend sandstone into groups of defined fluid flow abilities and relate them to facies. Also, we show the way of estimation of the reliable values of permeability in full geological log of a borehole on the basis of FZI, and the total porosity determined from well logging interpretation.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2009, 79, No 2; 13-26
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Understanding reservoir heterogeneity using variography and data analysis: an example from coastal swamp deposits, Niger Delta Basin (Nigeria)
    Autorzy:
    Obi, Ifeanyichukwu S.
    Onuoha, K. Mosto
    Obilaja, Olusegun T.
    Dim, C. I. Princeton
    Powiązania:
    https://bibliotekanauki.pl/articles/1841626.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    porosity
    permeability
    flow zone index
    property modelling
    shoreface
    fluvial channels
    porowatość
    przepuszczalność
    modelowanie właściwości
    podbrzeże
    kanały rzeczne
    Opis:
    For efficient reservoir management and long-term field development strategies, most geologists and asset managers pay special attention to reservoir chance of success. To minimise this uncertainty, a good understanding of reservoir presence and adequacy is required for better ranking of infill opportunities and optimal well placement. This can be quite challenging due to insufficient data and complexities that are typically associated with areas with compounded tectonostratigraphic framework. For the present paper, data analysis and variography were used firstly to examine possible geological factors that determine directions in which reservoirs show minimum heterogeneity for both discrete and continuous properties; secondly, to determine the maximum range and degree of variability of key reservoir petrophysical properties from the variogram, and thirdly, to highlight possible geological controls on reservoir distribution trends as well as areas with optimal reservoir quality. Discrete properties evaluated were lithology and genetic units, while continuous properties examined were porosity and net-to-gross (NtG). From the variogram analysis, the sandy lithology shows minimum heterogeneity in east-west (E–W) and north-south (N–S) directions, for Upper Shoreface Sands (USF) and Fluvial/Tidal Channel Sands (FCX/TCS), respectively. Porosity and NtG both show the least heterogeneity in the E–W axis for reservoirs belonging to both Upper Shoreface and Fluvial Channel environments with porosity showing a slightly higher range than NtG. The vertical ranges for both continuous properties did not show a clear trend. The Sequential Indicator Simulation (SIS) and Object modelling algorithm were used for modelling the discrete properties, while Sequential Gaussian Simulation (SGS) was used for modelling of the continuous properties. Results from this exercise show that depositional environment, sediment provenance, topographical slope, sub-regional structural trends, shoreline orientation and longshore currents, could have significant impacts on reservoir spatial distribution and property trends. This understanding could be applied in reservoir prediction and for generating stochastic estimates of petrophysical properties for nearby exploration assets of similar depositional environments.
    Źródło:
    Geologos; 2020, 26, 3; 207-218
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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