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Tytuł:
Determination of reservoir properties through the use of computed X-ray microtomography – eolian sandstone examples
Autorzy:
Dohnalik, M.
Jarzyna, J.
Powiązania:
https://bibliotekanauki.pl/articles/184436.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
reservoir rocks
petrophysical properties
Rotliegend sandstones
Opis:
The possibility of examining rock pore structure by the means of computed X-ray microtomography was presented. Parameters characterizing the pore structure, such as: porosity and coefficient of homogeneity of pore structure by local porosity examination, box counting dimension, mean chord length, normalized Euler number, as well as coordination number were all determined through pore structure image analyses. Complementary methods, such as helium pycnometry, mercury injection capillary pressure and NMR were used to determine the porosity along with other factors to make the comparison and determine mutual relationships between petrophysical properties obtained from various sources. The study covered the Rotliegend sandstones of eolian origin. Laboratory investigation of the reservoir properties was focused on three areas, according to their geological regions, where the Rotliegend sediments showed changeability in geological features and reservoir properties. Computed X-ray microtomography showed differentiation between the investigated areas, with respect to their pore structure and porosity development. This differentiation was confirmed by means of other applied laboratory methods.
Źródło:
Geology, Geophysics and Environment; 2015, 41, 3; 223-248
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The potential for locating hydrocarbon traps in the Rotliegend formation, based on the results of experimental seismic surveys
Autorzy:
Maćkowski, T.
Kwolek, K.
Górecki, W.
Powiązania:
https://bibliotekanauki.pl/articles/184799.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Rotliegend
seismic survey
lithologic traps
Chodzież trap
Opis:
Within the framework of the Operational Programme Innovative Economy 2007-2013, studies were carried out for improving the effectiveness of using seismic surveys in the prospecting and exploration of gas fields in the Rotliegend formation. The completed experimental seismic surveys provided new, very interesting data on the geological structure of the deeper part of the Rotliegend basin (>4000 m), which is practically very important for prospecting for new gas fields. The interesting results were obtained along virtually the entire cross-section, particularly in two segments: the southern segment – in front of and within the Człopa-Szamotuły tectonic zone (the Szczecin-Gorzów segment) and the northern segment – in the area of the Zabartowo-1 and Zabartowo-2 wells (the Pomeranian segment). In the northern segment, for the first time in the history of studies of the Lower Permian Basin, it was possible to record reflections from the horizon of the aeolian sandstones occurring within the playa silty-clayey deposits (543 m below the top of the Rotliegend formation), which represents a significant achievement from the point of view of prospecting for hydrocarbon resources. This horizon, characterized by favourable reservoir properties, pinches out northward. It is a very important piece of information because systems oflithologic traps may be related to such pinchouts. In the central part of the Obrzycko-Zabartowo profile, in the Chodzież area, a vast structural elevation occurs, approximately 10–12 km wide and with the amplitude of 250–300 m, which may be a potential large structural or structural and lithologic trap. These newly discovered zones of occurrence of gas traps in the seismic profiles made by the AGH University of Science and Technology within the framework of the research project, will be implemented in a detailed seismic exploration during the exploratory work of Polish Oil and Gas Company (PGNiG SA).
Źródło:
Geology, Geophysics and Environment; 2017, 43, 3; 191-199
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ichnotaxonomy and trackmaker assignment of tetrapod tracks and swimming traces from the Middle Permian Hornburg Formation of Saxony-Anhalt (Germany)
Autorzy:
Buchwitz, Michael
Marchetti, Lorenzo
Jansen, Maren
Falk, Daniel
Trostheide, Frank
Schneider, Joerg W.
Powiązania:
https://bibliotekanauki.pl/articles/1836268.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
rotliegend
tetrapod ichnology
Capitosauroides
Amphisauropus
Therapsida
Konberg
Opis:
Here we describe new material of tetrapod tracks and swimming traces from the Konberg quarry, a tracksite of the late middle Permian Hornburg Formation in Saxony-Anhalt, central Germany. A relatively well-preserved trackway and several isolated imprints are assigned to Capitosauroides isp. Among others, toe proportions in the manus and pes footprints of the newly described specimens and the long, proximal and detached pedal digit V imprint are similar to the type ichnospecies Capitosauroides bernburgensis from the Early Triassic of Bernburg, Saxony-Anhalt. In these features the new Konberg material differs from other ichnotaxa, such as Amphisauropus and Varanopus, which may look similar in their relative length of the sole, digit proportions and/or in the digit tip imprint morphology. The comparatively large manus imprint, which is wider than long, the relative length and shape of the sole impression, the digit proportions that are indicative for a more ectaxonic manus a more mesaxonic pes, the low pace angulation and the low imprint-size-normalized stride length in the Konberg track type are distinct from C. bernburgensis. It shares, however, a certain similarity with recently described material of Capitosauroides from middle-late Permian tracksites. These observations are in agreement with the results of a multivariate analysis including Capitosauroides and morphologically similar ichnotaxa. Our findings would justify the erection of a new ichnospecies if more trackways with a similar or slightly better preservation were at hand. Hornburg Formation material previously assigned to Amphisauropus is herein considered as indetermined tetrapod tracks, whereas the oc-currence of Dromopus isp. is confirmed. This reassignment shortens the stratigraphic range of the ichnogenus Amphisauropus,which appears to be restricted to the early Permian, since younger occurrences are questionable. In agreement with the attribution of Capitosauroides to eutheriodont producers, we regard the Konberg material assigned to this ichnogenus as tracks of small and possibly semi-aquatic therapsids. Abundant tetrapod swimming traces that co-occur with Capitosauroides isp. on the same bedding planes are interpreted as having been made by the same group of producers. The subaquatic traces often consist of short parallel claw mark sets. In agreement with a derived amniote producer group, they indicate propulsion by parasagittal limb movement rather than axial undulation.
Źródło:
Annales Societatis Geologorum Poloniae; 2020, 90, 3; 291-320
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/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:
X-ray micro computed tomography characterization of porosity in Rotliegend sandstones on the northern slope of the Wolsztyn Ridge, western Poland
Autorzy:
Poszytek, A.
Mikołajewski, Z.
Dohnalik, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060542.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Rotliegend
lithologic traps
sandstones
porosity
Wolsztyn Ridge
computed microtomography
Opis:
Natural gas in the Polish Rotliegend Basin occurs in porous and permeable aeolian sandstones, and traps are mostly structural. Lithological traps are rare and occur on the northern slope of the Wolsztyn Ridge where fluvial and aeolian sandstones overlap with alluvial facies. Both fluvial and aeolian sandstones are reservoir rocks in this area. The X-ray micro computed tomography (MCT) results and microscopic observations indicate that the sandstones in lithologic traps on the northern slope of the Wolsztyn Ridge form highly compartmentalized vertical reservoir rocks composed of four types of sandstones. The profiles are dominated by very low-porosity fluvial sandstones (F2), and low-porosity aeolian and fluvial sandstones (A2, F1). The A1 type of sandstones with high porosity (10%) occurs only in some sections of the profiles. The most important diagenetic processes that reduced porosity were compaction and cementation by carbonate cements. All studied sandstones were subjected to the same diagenetic processes. However, each of the processes ran with varying intensity in different types of sandstones. Detailed analyses of pore distribution by MCT methods with respect to primary depositional or lithofacies effects, and secondary diagenetic effects, help to understand the 3D geometry of pores and pore shape-size distributions. The results can be used in the studies of other sandstones with a different origin and age.
Źródło:
Geological Quarterly; 2016, 60, 4; 801-810
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Możliwości geologicznej sekwestracji CO2 w utworach czerwonego spągowca basenu Poznania
Future prospects for CO2 storage in geological structures of the Rotliegend Poznań Basin
Autorzy:
Lubaś, J.
Kiersnowski, H.
Powiązania:
https://bibliotekanauki.pl/articles/2062915.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
czerwony spągowiec
sekwestracja CO2
Rotliegend
CO2 sequestration
Opis:
Budowa geologiczna basenu Poznania, stanowiącego część polskiego permskiego basenu czerwonego spągowca, stwarza bardzo korzystne warunki do wielkoskalowej sekwestracji CO2. Znacznej miąższości utwory o korzystnych parametrach petrofizycznych, których przestrzeń porowa jest wypełniona solanką, tworzą megastrukturę przykrytą szczelnie od góry znaczącym pakietem ewaporatów cechsztyńskich o doskonałych parametrach izolujących. Szczelność tę potwierdzają liczne złoża gazu ziemnego, które utworzyły się w lokalnych niewielkich wyniesieniach morfologicznych. Z kolei szczelność peryferyjnych części niecki poznańskiej (kompleksu składowania) dokumentują złoża gazu, wytworzone w formie pułapek litologicznych na skutek wyklinowania się warstw kolektorskich czerwonego spągowca bądź zaniku jego cech zbiornikowych. Ten ogromny zawodniony zbiornik dodatkowo jest nasycony gazem ziemnym rozpuszczonym do warunków nasycenia w jego wysoko zmineralizowanych solankach. Znaczna ilość złóż gazu ziemnego została już wyeksploatowana, pozostała jednak infrastruktura instalacji powierzchniowych, a szczególnie korytarzy gazociągów przesyłowych, które mogłyby być wykorzystane do przesyłu sekwestrowanego CO2, np. z aglomeracji Poznania. Wykonane do chwili obecnej modelowania statyczne i dynamiczne, potwierdziły możliwość składowania w omawianej megastrukturze kilkuset mln ton CO2.
Rotliegend geology of the Poznań Basin, being part of the Polish Permian Basin, provides favourable conditions for large-scale CO2 storage. The Rotliegend deposits of significant thickness and advantageous petrophysical parameters, where the pore space is filled by brine, form a mega-structure sealed at the top by a thick unit of Zechstein evaporites. The quality of these seals is confirmed by the existence of several gas fields, originated in relatively small geomorphological traps. In turn, integrity of peripheral parts of the storage complex in the Poznań Basin is proven by the presence of gas fields originated as stratigraphic (upslope thinning reservoir lithofacies) or digenetic (decreasing reservoir conditions) gas traps. In addition, this large aquifer is saturated by natural gas, dissolved in highly mineralized brines, up to the maximum saturation phase. The majority of gas fields are depleted, but surface infrastructure has remained, especially gas pipeline systems, which can be used for transferring sequestrated CO2, for example, from Poznań agglomeration. Static and dynamic modeling has proved the possibility of storage of several hundred million metric tons of CO2 in this mega-structure.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2012, 448 (1); 17--26
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
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:
Ilościowa charakterystyka porowatości i przepuszczalności utworów czerwonego spągowca potencjalnie zawierających gaz ziemny zamknięty
Quantitative porosity and permeability characterization of potential Rotliegend tight gas reservoirs
Autorzy:
Such, P.
Leśniak, G.
Słota, M.
Powiązania:
https://bibliotekanauki.pl/articles/2074768.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
porowatość
przepuszczalność
gaz zamknięty
porosity
permeability
tight gas
Rotliegend sandstones
Opis:
Withinaframe of the research project on Rotliegend tight gas, a data base comprising 760 full sets of reservoir and permeability parameters was created. Data from 55 wells were collected from interval of 1650-5003 m. The obtained results showed presence of clastic reservoirs sufficient for formation of "tight gas" type deposits in each of the analyzed wells. In most of the wells, reservoir rock series with non-zero permeability were detected. Parameters of pore space suggest the major role of compaction processes in pore space evolution, except for some areas where cementation processes were predominating. A high-permeability anomaly characterizing a separate group of eolian sandstones from the depths of over 4000 m anomaly may be explained as due to presence of pseudo- and micro-fractures.
Źródło:
Przegląd Geologiczny; 2010, 58, 4; 345-351
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The occurrence and characteristics of reservoir waters from the Silesian segment of the Rotliegend Basin (SW Poland)
Autorzy:
Machowski, W.
Papiernik, B.
Machowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/191780.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Rotliegend Basin
Permian
gas accumulations
hydrodynamic conditions
rNa\rCl coefficient
Opis:
The paper considers the potential for new discoveries of gas accumulations in the Rotliegend Basin on the basis of the analysis of reservoir and hydrochemical tests and the results of reservoir simulations. Several reservoir simulations carried out in the study area (history of production and history matching) demonstrate the regional migration of reservoir waters. The integration of the simulations with mathematical calculations (in consistency with Hubbert’s theory) and with hydrochemical results permits recognition of the regional hydrody- namics and the potential localization of gas fields. In an analysis of the current hydrodynamic and hydrochemical conditions of reservoir waters in the Rotliegend (Lower Permian) strata, attention was focused on part of the sedi- mentary Rotliegend Basin, located south of the Wolsztyn-Pogorzela High, utilizing materials available from drilling and noting the differences between this area and the northern sub-basin. The current hydrogeological conditions and the dynamics of fluid transfer in the Rotliegend Basin are an effect of structural rearrangement during the Laramide orogeny. The basin hypsometry, resulting from the Laramide movements, became the decisive factor that controlled the filtration of groundwater. The recent hydrodynamic characteristics of migrating reservoir waters are reflected in the P-T (fluid pressure and temperature gradient) distribution pattern. Hence, the analysis of this distribution may reveal reactions that have taken place over time. It must be emphasized that clusters of gas fields are located in the zones occupied by stagnant groundwater (rNa/rCl<0.75) under hydrostatic (or slightly higher) pressure.
Źródło:
Annales Societatis Geologorum Poloniae; 2014, 84, 2; 167-180
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reservoir properties of the Upper Rotliegend and the Weissliegend sandstones in the Zielona Góra Basin (western Poland)
Autorzy:
Poszytek, A.
Powiązania:
https://bibliotekanauki.pl/articles/2059968.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Rotliegend
Weissliegend
Fore Sudetic Monocline
reservoir properties
reservoir potential parameter (RQ)
Opis:
Analysis of the porosity-depth, permeability-depth, and permeability-porosity relationships, as well as the parameter of reservoir potential RQ (result of relationship porosity v. permeability) of in the Upper Rotliegend sandstones of fluvial and aeolian origin and also of shallow marine (Weissliegend) sandstones from the Zielona Góra Basin in western Poland discussed in relation to the sedimentary settings, coupled with microscopic observations, have indicated that the most important factor determining the reservoir properties is cementation and/or matrix content in the pore space. The map of the mean distribution of the reservoir potential RQ for the topmost 50 metres of the Rotliegend have indicated a patchy distribution of zones with the highest and lowest reservoir potential in the central part of the basin, which is controlled mainly by the amount of carbonate, sulphate and illite cements in the pore space. Compaction had a minor influence on the presently noted reservoir properties, particularly in poorly-cemented sandstones.
Źródło:
Geological Quarterly; 2014, 58, 1; 193--206
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka utworów czerwonego spągowca w aspekcie badań rentgenowskiej mikrotomografii komputerowej i mikroskopii optyczne
Characteristics of Rotliegend sediments in view of X-ray microtomohraphy and optical microscopy investigations
Autorzy:
Dohnalik, Marek
Ziemianin, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/1833915.pdf
Data publikacji:
2020
Wydawca:
Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:
czerwony spągowiec
mikrotomografia
petrografia
własności zbiornikowe
Rotliegend
microtomography
petrography
reservoir properties
Opis:
The article presents the results of microtomographic and petrographic investigations of Rotliegend sandstones collected from core material from wells located in the area of the Fore-Sudetic Monocline in its central and northern parts and also on the border of the Fore-Sudetic Monocline and the Mogilno - Łódź Synclinorium. Three areas were selected for the study: Czarna Wieś–Parzęczewo (19 samples), Środa Wielkopolska–Kromolice (21 samples) and Siekierki–Miłosław (21 samples). The aim of the petrologic and microtomographic studies was to investigate how the different reservoir properties of sandstones will be reflected in the results of the methods used. Strong differences between samples from the region of Środa Wielkopolska–Kromolice and the other studied areas have been demonstrated. In the case of this area several key factors were noticed: the highest average value of effective porosity; the highest average content of pores belonging to class VII (pore volume subsystem classification); three times higher average value of the CT porosity coefficient and the largest length of the average chord. Also in terms of petrography (composition of grains, cement type) it is a region where major differences, especially compared to the region of Czarna Wieś–Parzęczewo, can be seen. Based on the obtained results, it was possible to rank the examined regions in terms of their reservoir properties – from the worst (Czarna Wieś–Parzęczewo) to the best (Środa Wielkopolska–Kromolice). These conclusions are also confirmed by other petrophysical analyses (eg. mercury porosimetry, permeability analysis). Combination of the obtained microtomographic and petrographic results allowed to obtain a full characterization of the investigated samples – both in terms of the mineralogical composition of grains, as well as the development of the pore space. These data, especially in combination with the results of density and porosity analyses (helium pycnometry and mercury porosimetry), open up a number of possibilities to carry out different types of modeling (porosity, permeability) both on the scale of the sample itself, as well as the scale of a single well or even the whole basin, which is crucial for creating a hydrocarbon exploration strategy.
Źródło:
Nafta-Gaz; 2020, 76, 11; 765--773
0867-8871
Pojawia się w:
Nafta-Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sand sheets interaction with aeolian dune, alluvial and marginal playa beds in Late Permian Upper Rotliegend setting (western part of the Poznań Basin, Poland)
Autorzy:
Kiersnowski, H.
Buniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/2060530.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Upper Rotliegend
sand sheet
marginal playa
Poznań Basin
Polska
Late Permian climate
Opis:
The Upper Rotliegend deposits of the western part of the Poznań Basin, Poland, represent three main sedimentary environments: aeolian desert (dunes and sand sheets), alluvial plain (alluvial covers with wadi deposits) and marginal playa. In arid periods, dunes prograded into areas dominated by alluvial sedimentation. During wet periods, alluvial deposits eroded the aeolian deposits and prograded onto dune fields. Playa sediments were deposited among aeolian or alluvial sediments during periodic expansions of the playa. These aeolian, alluvial and playa deposits are arranged in depositional sequences. Boundaries between sequences are marked by rapid changes in depositional facies; and by erosional bounding surfaces. Maximum Wetting Surfaces have been distinguished within some parts of the depositional sequences, which enable regional correlations. The sections studied are composed of thick sequences of sand and sand-gravel sheets. The sand sheets represent periods of stratigraphic condensation. Systems of sand sheets are typical of marginal areas of ergs. We distinguish nine depositional complexes (units) numbered 1-9 from base to top, respectively. These subdivisions are based on the interpretation of the sedimentological record in palaeoclimatic terms, and in terms of major erosional boundaries, which are probably of regional extent. In the aeolian deposits, major boundaries are associated with deflation surfaces related to the stabilization of groundwater levels. In the marginal playa deposits, the most important boundaries are correlated to transgressive surfaces that developed during playa expansion. Time gaps represented by the boundaries and the scale of erosion below them, are difficult to estimate. The depositional system of the Upper Rotliegend was dominated by sand and sand-gravel sheets, and is either a unique feature in the entire Southern Permian Basin or, as we assume, sand sheets occur more com monly in the Rotliegend than has been previously thought.
Źródło:
Geological Quarterly; 2016, 60, 4; 771--800
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowe dane o petrografii skał czerwonego spągowca z zachodniej części monokliny przedsudeckiej
New data on petrography of the Rotliegend rocks in the western part of the Fore-Sudetic Monocline
Autorzy:
Kuberska, M.
Kozłowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/2063005.pdf
Data publikacji:
2011
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
procesy diagenetyczne
czerwony spągowiec
monoklina przedsudecka
diagenetic processes
Rotliegend
Fore Sudetic Monocline
Opis:
Artykuł przedstawia wyniki badań skał czerwonego spągowca z czterech otworów wiertniczych, usytuowanych w zachodniej części monokliny przedsudeckiej. Do badań zastosowano standardową analizę petrograficzną (analizę mikroskopową, analizę planimetryczną), poszerzoną o analizę katodoluminescencyjną, badania w elektronowym mikroskopie skaningowym i badania rentgenowskie. Wyróżniono zlepieńce, przeważnie drobnoziarniste, polimiktyczne, piaskowce kwarcowe, sublityczne, lityczne i subarkozowe oraz mułowce i iłowce. W opisywanych skałach zauważono zmienne zabarwienie czerwonobrunatne i jasnoszaro-zielonkawe, często plamiste. Stwierdzono, że ma to związek ze zmianami Eh i pH w obrębie osadów w trakcie zachodzących przemian diagenetycznych.
The paper presents the results of studies of Rotliegend rocks from four boreholes located in the western part of the Fore-Sudetic Monocline. Standard petrographic (microscopic and planimetric) analysis accompanied by cathodoluminescence, SEM and XRD studies has been applied. The rocks are represented by conglomerates (mostly fine-grained and polymictic), sublithic, lithic and subarkosic quartz sandstones, mudstones and claystones. Their colours are variable and range from red-brown to light-grey-greenish. It is due to Eh and pH changes within the sediments during diagenetic alterations.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2011, 444; 135--147
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza inkluzji fluidalnych w wypełnieniach przestrzeni porowej skał czerwonego spągowca w wybranych rejonach Niżu Polskiego
Fluid inclusion analysis of pore space fillings in Rotliegend rocks from selected regions of the Polish Lowlands.
Autorzy:
Jarmołowicz-Szulc, K.
Powiązania:
https://bibliotekanauki.pl/articles/2074692.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
inkluzje fluidalne
czerwony spągowiec
piaskowce
przestrzeń porowa
fluid inclusions
Rotliegend
sandstones
pore space
Opis:
Fluid inclusions - tiny portions of palaeofluids trapped in minerals filling pore space in sedimentary rocks - were analysed. The studies covered carbonate, quartz and anhydrite cements in the Rotliegend rocks from several boreholes in north, north-western, central and south-west parts of the Polish Lowlands. They aimed at obtaining characteristics of fluid inclusions in the specific geological material, microthermometric measurements and use of fluid inclusions as geothermometer with reference to main petrological research conducted by A. Maliszewska and M. Kuberska in the above mentioned regions. Fluid inclusion studies comprised microscopic characteristics of these forms, fluorescence and cathodoluminescence observations and microthermometry. Due to different types of cements, different features of these inclusions have been observed. In general, the inclusions are two- or one-phase ones, primary and/or secondary, small, rare and hard to distinguish. Homogenisation temperatures of inclusions obtained in the studied samples lie in different intervals due to inclusion type and position. Generally they are above 100oC. Densities of fluids are differentiated and the systems are found to represent generally NaCl brines of changeable chemical systems. The microthermometric results have been compared with effects of analyses of light isotopes (carbon, oxygen) from the same cements. Data show presence of low-and high-temperature generations of cements.
Źródło:
Przegląd Geologiczny; 2009, 57, 4; 343-349
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System naftowy karbon–czerwony spągowiec w niemiecko-holenderskiej części basenu – implikacje dla poszukiwań złóż gazu ziemnego w polskiej części basenu czerwonego spągowca
The Carboniferous-Rotliegend petroleum system in the German-Dutch part of the basin – implications for natural gas exploration in the Polish part of the Rotliegend basin
Autorzy:
Botor, D.
Powiązania:
https://bibliotekanauki.pl/articles/2062882.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
system naftowy
czerwony spągowiec
karbon
basen południowopermski
petroleum system
Rotliegend
Carboniferous
Southern Permian Basin
Opis:
System naftowy karbon–czerwony spągowiec w niemiecko-holenderskiej części basenu wykazuje szereg podobieństw i różnic w stosunku do polskiej części basenu. Głębokości występowania złóż gazu w niemiecko-holenderskiej części basenu są większe (1000–5300 m) niż w polskiej (1000–3700 m) i do 4000 m w strefach gazu zamkniętego (tight gas). Gazy wykazują duże zróżnicowanie składu chemicznego, jak i parametrów fizycznych. Średnia zawartość metanu w niemiecko-holenderskiej części basenu waha się w przedziale 30–95%, rosnąc szybko w kierunku zachodnim, natomiast w polskiej części basenu wynosi od około kilkunastu do około 90%, wykazując jednak duże zróżnicowanie w poszczególnych strefach. Gazy zakumulowane głównie w czerwonym spągowcu były wygenerowane przez skały macierzyste karbonu górnego (głównie pokłady westfalskich węgli kamiennych) w niemiecko-holenderskiej części basenu, a podrzędnie jedynie przez dolnokarbońskie skały. Basen niemiecko-holenderski był rozcięty przez liczne mezozoiczne uskoki, które przyczyniły się do powstania szeregu zrębów i rowów tektonicznych. Spowodowało to w efekcie zróżnicowanie głębokości pogrążenia i czasu występowania procesów generowania, migracji i akumulacji gazu, oraz zróżnicowanie szeregu pokarbońskich skał zbiornikowych i uszczelniających. Procesy generowania migracji i akumulacji gazów przebiegały wieloetapowo: od późnego karbonu aż do neogenu włącznie.
Carboniferous-Rotliegend Petroleum System in the German-Dutch part of the South Permian basin shows a number of similarities and differences in relation to the Polish part of the basin. Depth of occurrence of gas deposits in the German-Dutch part of the basin are larger (~1000–5300 m) than in Poland (~1000–3700 m) with the maximum of up to 4000 m in the tight gas zone. Gases show significant variation of chemical composition and physical parameters. The average methane content in the German-Dutch part of the basin ranges from 30 to 95% rising rapidly towards the west, whilst in the Polish part, the average methane content varies significantly in different areas of the basin (from several up to 90%). Gases that accumulated mainly in the Rotliegend, were generated predominantly by Westphalian source rocks (bituminous coals) in the German-Dutch part of the basin, and only subordinately by Lower Carboniferous source rocks. German-Dutch basin was dissected by numerous Mesozoic faults, associated with horsts, grabens, and platforms. It contributed to the differentiation of burial depth and timing of the generation processes, to the migration and accumulation of gas, and to the diversification of a number of post-Carboniferous reservoir rocks and seals. The processes of gas generation, migration and accumulation included several stages: from Late Carboniferous through Neogene.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2012, 448 (1); 159--167
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
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