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Tytuł:
Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)
Autorzy:
Aleksić, Nikoleta
Kostić, Alaksandar
Radonjić, Miloš
Powiązania:
https://bibliotekanauki.pl/articles/2055865.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
petroleum
Rock-Eval
vitrinite reflectance
maceral
thermal maturity
Opis:
This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic matter in the area and thermal maturity stages from immature (Cenozoic) to early mature (Mesozoic). Vitrinite is abundant in the samples analysed, with the exception of Cretaceous samples that contain mostly lamalginite and bituminite. While measured vitrinite reflectance in end-member samples (Triassic shale 0.78 % Rr and Neogene coal 0.34% Rr) are in good correlation with the T max parameter from Rock-Eval pyrolysis. T max generally shows lower values in most Mesozoic samples. The organic petrographic data indicate that specific kerogen in Cretaceous and some Triassic sedimentary rocks is a probable reason for the significantly lower T max values. In addition, the results of pyrolysis documented before and after extraction revealed that free hydrocarbons (bitumen) in the surface samples analysed suppress the T max values.
Źródło:
Annales Societatis Geologorum Poloniae; 2021, 91, 4; 375--388
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Organic-matter vitrinite reflectance variability in the Outer Carpathians, Poland : relationship to tectonic evolution
Autorzy:
Zielińska, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060360.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Outer Carpathians
organic matter
thermal maturity
vitrinite reflectance
Opis:
Random vitrinite reflectance of allochthonous plant material varies throughout all the flysch sedimentary units of the Outer Western Carpathians. The vitrinite reflectance of coalified phytogenic matter is variable even within the same lithostratigraphic unit. There is no clear relationship between random vitrinite reflectance and stratigraphy (age of particular strata) within surface samples. The typical pattern of increasing random reflectance with depth in boreholes is unsettled by Rro “jumps” which occur within folds and overthrusts. However, this study revealed a trend of increasing random vitrinite reflectance from north to south in the area of the Magura Unit. A compressional regime involving phases of uplift and burial, varying from place to place in the flysch basin, was the main factor influencing coalification. The initial maturity of organic matter transported to the marine environment was a secondary factor. A degree of coalification had occurred in the flysch sediments prior to the main stage of fold-and-thrust movements associated with the phase of maximum tectonic subsidence at the end of the Eocene. It is generally assumed that coalified plant material dispersed in sedimentary rocks experienced the same physical and chemical changes as those in larger accumulations of coal. Coalification of phytogenic material coeval with flysch in the Outer Carpathians corresponds to the interval from sub-bituminous to low-medium-rank bituminous coal.
Źródło:
Geological Quarterly; 2017, 61, 1; 214--226
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Cambrian of the western part of the Pomeranian Caledonides foreland, Peribaltic Syneclise : microfloral evidence
Autorzy:
Szczepanik, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2059447.pdf
Data publikacji:
2000
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Peribaltic Syneclise
Caledonides
Cambrian
biostratigraphy
acritarchs
thermal maturity
Opis:
This paper describes the microfloral succession in Cambrian deposits in the Kościerzyna IG 1 and Gdańsk IG 1 boreholes drilled in the western part of the Peribaltic Syneclise, immediately adjoining the T-T Zone in the Pomeranian Caledonides foreland. Both these boreholes have yielded abundant acritarch assemblages that allow the partial zonation of the Lower and Middle Cambrian deposits. The Cambrian deposits of the Kościerzyna IG 1 borehole comprise the following microfloral zones: Asteridium tornatum-Comasphaeridium velvetum, Skiagia ornata-Fimbriaglomerella membranacea and Heliosphaeridium dissimilare-Skiagia ciliosa. The Volkovia dentifera-Liepaina plana Zone may also be present. The Acadoparadoxides pinus Zone (upper part of the A. oelandicus Superzone), well documented by trilobites, might correlate with the Cristallinium cambriense-Eliasum Superzone. This conflicts with the findings of Jankauskas and Lendzion (1992), who restricted the range of the commonly occurring C. cambriense (Slavikova) only to the Paradoxides paradoxissimus Superzone and younger deposits. The Lower Cambrian Skiagia-Fimbriaglomerella and (or) Heliosphaeridium-Skiagia Zones have been documented in the Gdańsk IG 1 borehole. As in the Kościerzyna IG 1 borehole, abundant Middle Cambrian acritarchs of the C. cambriense-Eliasum Superzone define the presence of rocks not older than equivalents of the A. pinus Zone. Palynomorphs from the Kościerzyna IG 1 borehole correspond to stage 6 of the AMOCO thermal alteration scale, i.e. to palaeotemperatures considerably exceeding 100°C. The maximum palaeotemperature of the Cambrian rocks at Gdańsk has not exceeded 100°C.
Źródło:
Geological Quarterly; 2000, 44, 3; 261-273
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palynofacies analysis, sedimentology and hydrocarbon potential of the Menilite Beds (Oligocene) in the Slovakian and Romanian Outer Carpathians
Autorzy:
Filipek, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2060248.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Menilite Beds
palynofacies
UV fluorescence
thermal maturity
Carpathians
Opis:
The sedimentary organic matter (SOM) assemblages and sedimentology of the Menilite Beds from the Dukla, Grybów and Vrancea units in the Slovakian and Romanian Outer Carpathians are described. Qualitative and quantitative analyses of the SOM help ascertain depositional conditions, while the thermal maturity of the organic matter studied is estimated utilizing the Spore Colour Index and UV light excitation techniques. The sedimentary organic particles were grouped into ten SOM categories: marine palynomorphs (dinoflagellate cysts), sporomorphs (saccate and non-saccate, pollen and spores), freshwater algae (Botryococcus sp., and other freshwater microplankton), phytoclasts (cuticles, translucent wood, opaque wood), resin and amorphous organic matter (AOM). All samples are dominated by AOM. The presence of Botryococcus sp., Pediastrum sp., Pterospermella sp. and Campenia sp., in some samples points to deposition under hyposaline conditions. It is interpreted that the freshwater influx induced water column stratification in the basin, leading to the development of dysoxic to anoxic bottom-water conditions that enhanced the preservation of AOM. Kerogen analysis in UV light and evaluation using the Spore Colour Index demonstrated different thermal maturation patterns from the Slovakian (post-mature) and Romanian (immature) sections. Integrated palynofacies analysis (notably, the presence of freshwater algae) and sedimentological observations (e.g., hummocky cross-stratification) lead to the conclusion that the deposition of the Menilite Beds in the Vrancea Unit (Romania) was relatively proximal to the shoreline, above storm wave base, whereas the Slovakian units (Dukla and Grybów) were deposited in a more distal setting.
Źródło:
Geological Quarterly; 2020, 64, 3; 589--610
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemical interpretation and comparison of biomarker composition of bitumens obtained from coals and surrounding rocks
Autorzy:
Matuszewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/1204922.pdf
Data publikacji:
2002
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
coal
coal shales
bitumens
biomarkers
GC-MS
thermal maturity
Opis:
The bitumens obtained as the extraction products from a series of coals and surrounding rocks samples were fractionated onto aliphatic, aromatic and polar fractions. Aliphatic and aromatic fractions were then submitted to analysis using modern gas chromatography - mass spectrometry method. The distribution of n-alkanes was compared and parameters values characterising conditions of sedimentation and type of primary organic matter were calculated. In aliphatic fractions, a series of biomarkers was also identified as steranes, diasteranes, tricyclic diterpanes, hopanes and moretanes. The relatively high content of diasteranes was observed in the bitumens from shales bordering on coals. It confirms the literature data indicating possibility of catalytic influence of claystones on arrangement of steranes to diasteranes. The values of parameters calculated from the data characterising distribution of hopanes have indicated a possibility of generation of oils by some of analysed coals: flame as well as orthocoking coals.The aromatic compounds were also identified, mainly phenanthrenes being an important stage of aromatisation process of fossil organic matter.The comparison of characteristics of bitumens obtained from coals and surrounding rocks suggests a possibility of migration of various groups of organic compounds from coal layers to rocks bordering on them. The migration of organic mobile matter seems to be as well a result of a great difference of concentration between coal and surrounding rocks layers as of action of circulating waters or hydrothermal solutions. The temperature gradient and local intrusive bodies are of great significance for processes of oil migration. The examinations and conclusions presented in this work should be, however, taken as the introductory ones and have to be confirmed by analysis of a greater number of samples of various geological characteristics.
Źródło:
Polish Geological Institute Special Papers; 2002, 7; 169-180
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal maturity and depositional environments of organic matter in the post-Variscan succession of the Holy Cross Mountains
Autorzy:
Marynowski, L.
Salamon, R.
Narkiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/2059919.pdf
Data publikacji:
2002
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Holy Cross Mountains
Permian
Triassic
biomarkers
depositional environment
thermal maturity
Opis:
The results of GC-MS investigations of biomarkers in organic matter from the epicontinental Permian and Triassic strata of the Holy Cross Mts. indicate generally suboxic (Permian) and oxic (Triassic, except for the Middle Muschelkalk) depositional environments with accompanying intensive bacterial reworking of organic remains. The biomarker spectra found in the Middle Muschelkalk and in the Entolium discites Beds (Upper Muschelkalk) show the presence of gammacerane, an increased concentration of C34 homohopanes and a Pr/Ph ratio not exceeding 1. All these observations suggest a hypersaline sedimentary environment with water column stratification and poorly oxygenated conditions. Thermal maturity investigations were based on both vitrinite reflectance and biomarker indices. The organic matter in the Triassic succession is slightly more mature along the northern margin of the Holy Cross Mts. than along their southern part, due probably to a regional increase in the maximum burial depth during the Mesozoic. The maturity of the Permian strata at Gałęzice (southern Holy Cross Mts.) is similar to that of the Triassic rocks whereas Kajetanów (in the north) is characterised by values significantly higher and comparable to those found in wells further north. The difference cannot be accounted for solely by differential burial depths, and implies the existence of a positive thermal anomaly active before the Middle Triassic. Our investigations generally confirmed the low thermal maturity of the Triassic. However, contrary to earlier interpretations, we suggest that the maximum burial depths based on a reconstructed thickness of the post-Triassic deposits may account for the observed maturity levels, assuming that geothermal gradients in the Mesozoic were similar to today's.
Źródło:
Geological Quarterly; 2002, 46, 1; 25-36
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Ordovician acritarchs of the Pomeranian Caledonides and their foreland - similarities and differences
Autorzy:
Szczepanik, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2059446.pdf
Data publikacji:
2000
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Peribaltic Syneclise
West Pomeranian Caledonides
Ordovician
acritarchs
stratigraphy
thermal maturity
Opis:
Ordovician acritarch assemblages of the West Pomeranian Caledonides and their platformal foreland in the Peribaltic Syneclise immediately adjoining the T-T Zone were investigated. Material come from the Ordovician section of the Kościerzyna IG 1, Lębork IG 1 and Gdańsk IG 1 boreholes drilled in the marginal part of the East European Craton, though acritarchs were found only in two samples from the Gdańsk IG 1 borehole. In general, microflora was abundant and the investigations supported current ideas on the stratigraphical level of these rocks. The acritarch assemblages from the Gdańsk IG 1 borehole, found at a depth of 3214.8 m, contain species of Baltisphaeridium, characteristic of the Llanvirn and described by Górka from the eastern part of the Peribaltic Syneclise and the Podlasie Depression. The abundant microflora from West Pomerania contains index taxa of the uppermost Llanvirn (Llandeilo) and Caradoc. Numerous palynomorph associations from the Ordovician rocks of the Koszalin-Chojnice Zone can be divided into three local microfloral zones, using quantitative data, and these may be useful for local stratigraphical correlations. Acritarch assemblages on either side of the T-T Zone show many similarities and suggest that, in the late Llanvirn and Caradoc, there was little palaeogeographic separation between the sedimentary basins of Baltica and West Pomerania; at least, their palaeolatitudinal positions were similar. The thermal maturity of Ordovician organic matter (low and moderate) is also similar in both these areas. The highest heat flow values seem to be characteristic of the western part of the Peribaltic Syneclise, adjoining the T-T Zone. The degree of their thermal alterations in the West Pomeranian Caledonides is surprisingly low when the strong tectonic deformation and considerable depth of the Ordovician rocks are taken into account. The high morphological diversity of the acritarch assemblages, the presence of Baltisphaeridium and Ordovicidium, and especially of abundant Veryhachium, suggest that microflora from the Koszalin-Chojnice Zone represents an open-marine depositional palaeoenvironment, distant from the coast.
Źródło:
Geological Quarterly; 2000, 44, 3; 275-295
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Source rock potential of the Miocene sedimentary rocks in the Carpathian Foredeep of the Czech Republic
Autorzy:
Geršlová, Eva
Medvecká, Lujza
Jirman, Petr
Nehyba, Slavomír
Opletal, Vladimir
Powiązania:
https://bibliotekanauki.pl/articles/2087030.pdf
Data publikacji:
2022
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Carpathian Foredeep
Miocene
organic petrography
thermal maturity
kerogen type
source rock potential
Opis:
We determine the organic matter content, its thermal maturity, genetic type, and source rock potential of the Miocene sedimentary rocks in the Czech Carpathian Foredeep. In the Czech Republic the Carpathian Foredeep represents a peripheral foreland basin formed due to the tectonic emplacement and loading of the Alpine-Carpathian Thrust Wedge onto the passive margin of the Bohemian Massif. Random vitrinite/huminite reflectance measurements and maceral analyses were performed on 25 samples from the Carpathian Foredeep succession. Additionally, results of 135 TOC content measurements, 141 Rock-Eval pyrolysis analyses and 27 vitrinite reflectance measurements were used to evaluate the regional distribution and depth trends for the entire Carpathian Foredeep. The thermal maturity of organic matter is between the immature part and peak of the oil window (Tmax = 413–448°C). Beneath the Western Carpathian Thrust Belt, the thermal maturity reaches higher values (Rr = 0.43–0.58%, Tmax = 429–448°C). The hydrocarbon generation potential is poor or fair, even if the total organic carbon values indicate good or even very good source rock potential. This is mainly due to the prevailing gas-prone Type III kerogen. The best source rocks were observed in the Miocene strata of the southern and central segments of the area discussed.
Źródło:
Geological Quarterly; 2022, 66, 1; art. no. 1
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrocarbon generation modelling in the Permian and Triassic strata of the Polish Basin: implications for hydrocarbon potential assessment
Autorzy:
Botor, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/31342965.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
hydrocarbon potential
kerogen transformation ratio
thermal maturity modelling
Polish Basin
Permian
Triassic
Opis:
Hydrocarbon generation in the Zechstein Main Dolomite and Upper Triassic potential source rocks of the Polish Basin was investigated by 1-D thermal maturity modelling in 90 boreholes across the basin. This identified major zones potentially worthy of further exploration efforts. The maximum burial depth of the Zechstein Main Dolomite and Upper Triassic reached >5 km during the Late Cretaceous leading to maximum thermal maturity of organic matter. Hydrocarbon generation development reveals considerable differences between particular zones of the Zechstein Main Dolomite and Upper Triassic. The kerogen transformation ratio (TR) in the Zechstein Main Dolomite reached values approaching 100% along the basin axis. The TR in the Upper Triassic source rocks is generally lower than in the Zechstein Main Dolomite due to lesser burial. The Upper Triassic source rocks have the highest TR values (>50%) along the basin axis, in the area between boreholes Piła IG 1 and Piotrków Trybunalski IG 1, with the most pronounced zone in the Krośniewice Trough (i.e., between the Krośniewice IG 1 and Budziszewice IG 1 boreholes), where the TR reached >90%. The Zechstein Main Dolomite and Upper Triassic entered the oil window in the Late Triassic to Early–Middle Jurassic, respectively. Hydrocarbon generation continued until the Late Cretaceous, and was completed during tectonic inversion of the basin.
Źródło:
Geological Quarterly; 2023, 67, 2; art. no. 20
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative petrography and organic geochemistry of different types of organic matter occurring in the Outer Carpathians rocks
Autorzy:
Zielińska, Magdalena
Fabiańska, Monika
Więcław, Dariusz
Misz-Kennan, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2058565.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polish Outer Carpathians
redeposited organic matter
organic matter petrography
thermal maturity
biomarkers
Rock-Eval
Opis:
The characterization of organic matter (OM) in sedimentary rocks is important in many types of biological, geological and environmental research. The integrated use of microscopy and geochemistry, as here, is particularly useful in any attempt to define the origin and evolution of OM in sedimentary basins. The organic petrography and geochemistry different types of allogenic and authigenic OM from the Polish Outer Carpathian (POC) rocks were studied in present study to compare their genetic type, thermal maturity, depositional environment and post-sedimentation processes. Special attention was paid to redeposited coal clasts occurrences. The used techniques show differences in organic matter type originating from various sources. The organic petrography analysis shows that redeposited coal clasts (CC) and terrigenous organic matter (TOM) are composed predominantly of woody material (the gas-prone Type-III kerogen). Similar results were obtained during the Rock-Eval pyrolysis. Moreover, the GC-MS analysis of extracts indicated the additional source of OM, namely planktonic organic matter (POM) with oil-prone kerogen Type-I or II. This OM is in some cases high thermally mature and could potentially has allochthonous origin. The n-alkane, saturated and aromatic biomarker data revealed deposition of this POM in anoxic deltaic or close-shore sedimentary environments whereas the redeposited coal clasts were probably originally deposited in coal swamps as were the Upper Silesian bituminous coals.
Źródło:
Geological Quarterly; 2020, 64, 1; 165--184
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemical characteristics, thermal maturity and source rock potential of the Oligocene Šitbořice Member of the Menilite Formation in the Ždánice Unit (Czech Republic)
Autorzy:
Jirman, P.
Geršlová, E.
Pupp, M.
Bubík, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060076.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Šitbořice Member
Menilite Formation
Outer Flysch Carpathians
source rock potential
thermal maturity
organic petrography
Opis:
Rocks deposited in the Oligocene Paratethys are recognized as one of the most important source rocks in the Flysch Carpathians. The Šitbořice Member (uppermost NP23 to lowermost NP25 zone) represents the upper part of the Menilite Formation in the Outer Flysch Carpathians of the Czech Republic. This paper presents results of bulk geochemical analysis, Rock-Eval pyrolysis and organic petrography. The geochemical evaluation, source rock potential, kerogen type and thermal maturity were studied using borehole cores. Based on the classification of Peters (1986), the evaluated Šitbořice Member is mostly classified as a “very good” source rock according to TOC and variable, mostly “poor” to “good” according to the petroleum potential. However, the average petroleum potential value assigned the member to “good” source rock which is in accordance with the TOC classification if the “live” TOC is used. A comparable distribution between kerogen type II and III has been indicated by HI. Unlike this, the organic petrography observations show the organic matter belongs to the kerogen type II which corresponds to the relationship of residual hydrocarbon potential versus TOC and HI calculated based on “live” organic carbon. Presumed immaturity was confirmed by Rr and Rock-Eval Tmax. Oxygen-restricted conditions ora dysoxic environment have been indicated by the TOC/TS ratio.
Źródło:
Geological Quarterly; 2018, 62, 4; 858--872
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unconventional hydrocarbon prospects in Ordovician and Silurian mudrocks of the East European Craton (Poland) : Insight from three-dimensional modelling of total organic carbon and thermal maturity
Autorzy:
Papiernik, Bartosz
Botor, Dariusz
Golonka, Jan
Porębski, Szczepan J.
Powiązania:
https://bibliotekanauki.pl/articles/191357.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Lower Palaeozoic
shale gas
shale oil
Baltic Basin
Lublin-Podlasie Basin
total organic carbon
thermal maturity
structural parametric model
Opis:
Three-dimensional, structural and parametric numerical modelling was applied to unravel the unconventional hydrocarbon potential of a W-dipping, Lower Palaeozoic mudrock succession, which subcrops for some 700 km in the Baltic, Podlasie and Lublin basins across the SW margin of East European Craton in Poland. Input data comprised structural and thickness maps of Ordovician and Silurian strata and the results of thermal maturity (mean vitrinite-equivalent reflectance, % Ro) and total organic carbon (TOC, % wt.) modelling. A new, spatial interpretation of vitrinite-reflectance variability indicates that the regional, W-increasing thermal maturity pattern breaks into a series of domains, bounded by abrupt maturity variations. In total, 14 tectono-thermal domains were recognised and their boundaries traced to known and inferred faults, mostly of NW‒SE and NE‒SW orientations. On the basis of a combination of thermal maturity and total organic carbon levels (0.6% > Ro<2.4%, and TOC >1.5% wt.), good-quality, unconventional reservoirs can be expected in the Sasino Formation (Caradoc) and Jantar Formation (early Llandovery) in the central and western Baltic Basin. The Jantar Formation also is likely to be prospective in the western Podlasie Basin. Marginal-quality reservoirs may occur in the Sasino and Jantar formations within the Podlasie and Lublin basins and in the Pasłęk Formation (late Llandovery) across all basins. Poor- to moderate-quality, unconventional reservoirs could be present in the Pelplin Formation (Wenlock) in the Lublin and southern Podlasie basins. In spite of a considerable hydrocarbon loss during multiphase basin inversion, the Ordovician and Silurian mudrocks still contain huge quantities of dispersed gas. Successful exploitation of it would require the adoption of advanced fracking methods.Lower Palaeozoic, shale gas, shale oil, Baltic Basin, Lublin-Podlasie Basin, total organic carbon, thermal maturity, structural-parametric model.
Źródło:
Annales Societatis Geologorum Poloniae; 2019, 89, 4; 511- 533
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stratigraphic distribution of hydrocarbon accumulations and charging history of reservoirs based on thermal evolution of petroleum source rocks within the southern border area of the Dnieper-Donets Basin
Stratygraficzna charakterystyka akumulacji weglowodorowych oraz historia napełniania pułapek złożowych na podstawie ewolucji termicznej skał macierzystych w obrębie południowej granicy basenu dnieprowsko-donieckiego
Autorzy:
Karpenko, I.
Powiązania:
https://bibliotekanauki.pl/articles/2075665.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Dnieper-Donets Basin
rift
graben
source rocks
petroleum system
thermal maturity
burial history
hydrocarbons generation and accumulation
macerals
basen dnieprowsko-doniecki
ryft
rów tektoniczny
skały macierzyste
system naftowy
geneza i dojrzałość termiczna
generacja i akumulacja węglowodorów
macerały
Opis:
Kompleksowe badania systemu naftowego dostarczają prognoz i danych wejściowych do oceny ryzyka w celu ewaluacji nierozpoznanych wierceniami złóż w basenie dnieprowsko-donieckim (BDD), związanych ze strukturami solnymi lub występujących na znacznych głębokościach (5-7 km). Badania systemu naftowego dla zrozumienia mechanizmu i historii napełniania pułapek oraz geochronologii zdarzeń (czynnik czasu) wymagało zintegrowanych badań elementów systemu naftowego: występowania złóż ropy i gazu oraz ich wstępnych zasobów, rozprzestrzenienia skał macierzystych, ich właściwości oraz dojrzałości termicznej. Jednowymiarowe modelowanie historii pogrzebania dla otworów wiertniczych z BDD, skorelowane z danymi na temat refleksyjności witrynitu, dało informacje na temat rozkładu strumienia cieplnego w czasie jego ewolucji. Dwuwymiarowe modele systemu naftowego pozwoliły poznać wiek procesów generowania węglowodorów, typy migracji i historię napełniania znanych pułapek, jak również dostarczyły prognoz na temat złóż nierozpoznanych wierceniami. Generacja węglowodorów z każdego źródła następowała w krótkich okresach czasu z powodu szybkiego tempa pogrążania. Możliwość zachowania się złóż była zależna od wzrostu wysadów oraz migracji struktur solnych. Głębokie i bardzo głębokie pułapki w przyosiowej części basenu, które nie zostały naruszone wskutek wzrastających wysadów solnych w permie, są wypełnione złożami gazu po dzień dzisiejszy. Natomiast pułapki związane z wysadami solnymi w obrębie przyosiowych stref basenu były wypełniane węglowodorami tylko w osadach nie starszych niż śrokowokarbońskie, ponieważ starsze skały macierzyste wyczerpały już swój potencjał węglowodorowy do tego czasu.
Źródło:
Przegląd Geologiczny; 2017, 65, 8; 516--525
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Burial and thermal history of the Polish part of the Baltic region
Autorzy:
Wróbel, M.
Kosakowski, P.
Poprawa, P.
Powiązania:
https://bibliotekanauki.pl/articles/2059073.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Baltic Region
northern Poland
subsidence
burial history
thermal evolution
maturity modelling
Opis:
The burial history and thermal evolution of the western part of the Baltic region was reconstructed by means of 1-D modelling for eight boreholes penetrating the lower Paleozoic succession. The Neoproterozoic rifting presumably caused elevation of heat flow, while Cambrian to Mid Ordovician post-rift thermal sag of the Baltica passive margin led to systematic decrease of heat flow with time. Development of the Late Ordovician to Silurian flexural foredeep of the Caledonide collision zone was associated with intensive subsidence, a high rate of sediment deposition and rapid burial of the Upper Cambrian and/or Tremadocian, Upper Ordovician and lower Silurian source rocks, presumably sufficient for the early stage of oil generation. After post-Caledonian Early Devonian uplift, the western Baltic region was subject to Early Devonian to early Carboniferous subsidence and deposition, leading to further burial of the source rocks. Together with elevated heat flow, characteristic of the Variscan broad foreland, this caused further source rocks maturation and hydrocarbon generation. Late- to post-Variscan uplift and erosion (late Carboniferous to late Permian) resulted in complete removal of the Middle Devonian to lower Carboniferous strata and development of the major regional unconformity. During late Permian to Cretaceous time the western part of the Baltic region constituted an eastern flank of the Polish Trough, with the main phases of subsidence and burial during late Permian-Early Triassic time, related to rifting in the Polish Trough, and during Late Cretaceous time, related to the compressional regime. Maturity profiles in boreholes from the vicinity of the studied boreholes indicate the presence of a late Mesozoic (Late Cretaceous?) positive thermal event, causing further maturation of the source rock.
Źródło:
Geological Quarterly; 2010, 54, 2; 131-142
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Burial and thermal history of the Lower Palaeozoic petroleum source rocks at the SW margin of the East European Craton (Poland)
Autorzy:
Botor, Dariusz
Golonka, Jan
Anczkiewicz, Anneta A.
Dunkl, István
Papiernik, Bartosz
Zając, Justyna
Guzy, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/191816.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
maturity modelling
shale gas
shale oil
burial history
thermal history
Palaeozoic
East European Craton
Opis:
Thermal maturity modelling was carried out in over sixty wells along the SW margin of the East European Craton (EEC). The burial and thermal history modelling of the EEC, using thermochronological data, allowed the construction of burial history maps showing its geological development in the Phanerozoic. These results have proved that the Ordovician and Silurian source rocks occurring at the SW margin of the EEC reached a maximum palaeotemperature in the Palaeozoic, mainly during Devonian-Carboniferous time and at the latest during the Silurian in the most westerly part of this margin, along the Teisseyre-Tornquist Zone. In Mesozoic and Cainozoic time, the Ordovician and Silurian strata generally were subjected to cooling or to very minor heating, certainly below the Variscan level. The maximum burial and maximum temperature of the Ediacaran-Lower Palaeozoic strata were reached during the Early Carboniferous in the Baltic Basin and during the Late Carboniferous in the Lublin area, and even in the Early Permian in the SE corner of the Lublin Basin. Thus, the main period of maturation of organic matter and hydrocarbon generation in the Ordovician and Silurian source rocks was in the Late Palaeozoic (mainly Devonian-Carboniferous) and in the westernmost zone along the Teisseyre-Tornquist line at the end of the Silurian.
Źródło:
Annales Societatis Geologorum Poloniae; 2019, 89, 2; 121-152
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 17

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