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Wyświetlanie 1-9 z 9
Tytuł:
Habitat and hydrocarbon potential of the lower Paleozoic source rocks in the Polish part of the Baltic region
Autorzy:
Kowalski, A.
Więcław, D.
Grotek, I.
Kotarba, M. J.
Kosakowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/2059076.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Baltic Region
northern Poland
source rock
hydrocarbon potential
Lower Paleozoic
Opis:
The quantity, genetic type and maturity of organic matter dispersed in the Lower Cambrian to the uppermost part of the Silurian (Pridoli) sequence of the Polish part of the Baltic region was determined based on the results of geochemical analyses of a total of 1377 rock samples collected from 38 onshore and offshore boreholes. The best source rocks were found in the Upper Cambrian-Tremadocian succession where present and initial total organic carbon (TOC) contents are up to ca. 18 and 20 wt.%, respectively. Caradocian (Ordovician) strata can be considered as an additional source of hydrocarbons. In the individual boreholes median present and initial TOC contents vary from 0.5 to 3.3 wt.% and from 1 to 6 wt.%, respectively. The Llandovery (Silurian) strata reveal moderate and locally high hydrocarbon potential of the source rocks. The present TOC content reaches locally 10 wt.% (usually 1-2 wt.%). Another source of hydrocarbons can be clayey intercalations within the Middle Cambrian strata. Their organic matter content rarely exceeds 1 wt.%, being often a result of advanced organic matter transformation. In all lower Paleozoic strata investigated from the Polish part of the Baltic region oil-prone, low-sulphur Type-II kerogen occurs, deposited in anoxic or sub-oxic conditions. The maturity of all source rocks changes from the initial phase of the low-temperature thermogenic processes in the northeastern part to the overmature stage in the southwestern part of the study area.
Źródło:
Geological Quarterly; 2010, 54, 2; 159-182
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Habitat and hydrocarbon potential of the Kimmeridgian strata in the central part of the Polish Lowlands
Autorzy:
Więcław, D.
Powiązania:
https://bibliotekanauki.pl/articles/2060197.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polish Lowlands
Kimmeridgian
source rock
hydrocarbon potential
biomarkers
carbon stable isotopes
Opis:
The quantity, genetic type and maturity of organic matter dispersed in the Kimmeridgian strata of the central part of the Polish Lowlands were determined on the basis of results of Rock-Eval, stable carbon isotope composition of bitumen, their fractions and kerogen, biomarker distribution in saturate and aromatic hydrocarbon fraction, elemental composition of kerogen, vitrinite reflectance and maceral composition analyses of 225 rock samples collected from 32 boreholes. The study was conducted separately for Lower and Upper Kimmeridgian rocks in the Szczecin-Miechów and Kościerzyna-Puławy synclinoriums and Mid-Polish Anticlinorium. The best source rocks with TOC up to 6.8 wt.%, were found in the vicinity of Gostynin in the Mid-Polish Anticlinorium. Generally, the Upper Kimmeridgian strata are fair and good potential source-rocks whereas the Lower Kimmeridgian strata have much lower hydrocarbon potential. Gas-prone, terrigenous Type-III kerogen predominates in the Lower Kimmeridgian strata. The contribution of oil-prone, marine Type-II kerogen increases in the Upper Kimmeridgian rocks. In the whole profile, only low-sulphur kerogen was recorded, although the situation, when high-sulphur Type-IIS kerogen was mixed with re-worked, non-generative Type-IV kerogen supplied to the sedimentary basin with rocks from eroded land, cannot be excluded. Sedimentary conditions of organic material were variable, usually anoxic and suboxic with domination of siliclastic material in mineral matrix. The maturity of the dispersed organic matter refers mostly to the final phase of the microbial process, or to the initial phase of the low-temperature thermogenic process (oil window). The most mature rocks, corresponding up to 0.75% in the vitrinite reflectance scale, were recognised in the deepest buried parts of the basin (axial part of the Mogilno-Łódź Segment of the Szczecin-Miechów Synclinorium). The most prospecting source rocks were recognised in this area.
Źródło:
Geological Quarterly; 2016, 60, 1; 192--210
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of hydrocarbon potential of the autochthonous Miocene strata in the NW part of the Ukrainian Carpathian Foredeep
Autorzy:
Kotarba, M. J.
Więcław, D.
Kosakowski, P.
Koltun, Y. V.
Kowalski, A.
Powiązania:
https://bibliotekanauki.pl/articles/191375.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
source rocks
hydrocarbon potential
organic geochemistry
Miocene
Bilche-Volytsia Unit
Ukrainian Carpathian Foredeep
Opis:
The quantity, genetic type, maturity and hydrocarbon potential of dispersed organic matter were determined for the complete sequence of the autochthonous Miocene ranging from the Lower Badenian Sandy-Calcareous Series to the Lower Sarmatian Upper Dashava Formation of the Bilche-Volytsia Unit. Geochemical analyses were conducted on 78 core samples collected from 11 wells in the Ukrainian Carpathian Foredeep between the Ukrainian-Polish state border and the Stryi River. The most favourable source-rock parameters characterize the Upper Badenian Kosiv Formation where the highest TOC contents, from 0.44 to 2.01 wt% (median 0.76 wt%), were found. Only slightly lower values were obtained for the Lower and the Upper Dashava formations – from 0.01 to 1.45 wt% (median 0.72 wt%) and from 0.62 to 0.77 wt% (median 0.71 wt%), respectively. In the Lower Badenian Sandy-Calcareous Series, the Lower Badenian Baraniv beds, and the Upper Badenian Tyras Formation, the TOC content is lower and varies from 0.00 to 0.77 wt%. Immature type III (terrestrial) kerogen dominates the analysed sections of the Kosiv and Dashava formations. Marine organic matter was detected sporadically, and only in the Upper Badenian Kosiv Formation in the vicinity of Kokhanivka, and in the Upper Badenian Kosiv and Tyras formations.
Źródło:
Annales Societatis Geologorum Poloniae; 2011, 81, No 3; 395-407
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wstępna ocena macierzystości wybranych utworów paleozoiku Gór Świętokrzyskich
The preliminary assessment of the selected Paleozoic deposits of the Holy Cross Mountains
Autorzy:
Malec, J.
Więcław, D.
Zbroja, S.
Powiązania:
https://bibliotekanauki.pl/articles/183720.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Góry Świętokrzyskie
paleozoik
potencjał węglowodorowy
Rock-Eval
Paleozoic
Holy Cross Mountains
hydrocarbon potential
Opis:
Na podstawie wyników badań pirolitycznych Rock-Eval 47 próbek skalnych określono wstępną charakterystykę macierzystości wybranych serii litostratygraficznych paleozoiku Gór Świętokrzyskich. Badaniami objęto skały wieku kambryjskiego, ordowickiego, sylurskiego, karbońskiego i permskiego charakteryzujące się ciemną barwą. Utwory kambru i ordowiku w regionie łysogórskim charakteryzują się bardzo słabymi parametrami macierzystości. W sylurze najbogatsze w materię organiczną są iłowce landoweru warstw bardziańskich (średnio 3% wag. TOC), w karbonie - iłowce wizenu i turneju formacji z Zaręb (przeciętnie 2.8% wag. TOC), a w górnym permie - wapień cechsztyński (średnio 1.6% wag. TOC). W utworach dolnego paleozoiku jest obecna materia organiczna pochodzenia morskiego (kerogen II typu). Dominuje ona również w utworach górnego paleozoiku. Lokalne wtrącenia lądowego kerogenu III typu stwierdza się w karbońskiej formacji z Zaręb. Utwory kambru i ordowiku w rejonie łysogórskim są przejrzałe. Stopień przeobrażenia badanych utworów syluru, karbonu i permu odpowiada początkowej i Środkowej fazie "okna ropnego". Obszarem perspektywicznym dla poszukiwań węglowodorów jest NW obrzeżenie Gór Świętokrzyskich, gdzie bogate w materię organiczną paleozoiczne kompleksy litologiczne występują pod osadami pokrywy mezozoicznej.
The hydrocarbon potential of selected Paleozoic lithostratigraphic complexes of the Holy Cross Mountains was determined based on the results of Rock-Eval pyrolysis of 47 samples. For investigations only rocks in dark colours from Cambrian, Ordovician, Silurian, Carboniferous and Permian strata were selected. The Cambrian and Ordovician strata from the Łysogóry Region have poor source-rock parameters. Among the Silurian strata, the claystones of the Bardo Beds (ca. 3 wt. % TOC) are the richest in total organic carbon (TOC). The claystones of the Zaręby Formation (Carboniferous - Visean and Tournaisian) have mean TOC content ca. 2.8 wt. % and the Zechstein Limestone (Permian) ca. 1.6 wt. % TOC. In the Early Paleozoic strata marine kerogen (Type-II) is present. It dominates also in the Upper Paleozoic strata. Local inputs of the terrigenous Type-III kerogen were confirmed in the Zaręby Formation (Carboniferous). The Cambrian and Ordovician strata in the Łysogóry region are overmature. Maturity of the investigated Silurian, Carboniferous and Permian strata corresponds with the initial and middle phases of the "oil window". The NW margin of the Holy Cross Mountains, where the Paleozoic complexes rich in the organic matter are covered by the Mesozoic complex, is perspective area for hydrocarbon exploration.
Źródło:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2010, 36, 1; 5-24
0138-0974
Pojawia się w:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of hydrocarbon potential of the Lower Palaeozoic strata in the Tarnogród–Stryi area (SE Poland and western Ukraine)
Autorzy:
Więcław, D.
Kosakowski, P.
Kotarba, M.J.
Koltun, Y. V.
Kowalski, A.
Powiązania:
https://bibliotekanauki.pl/articles/191878.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
source rock
hydrocarbon potential
Cambrian
Ordovician
Silurian
Carpathian Foredeep basement
SE Poland
Western Ukraine
Opis:
Quantity, genetic type and maturity of organic matter dispersed in the Lower Palaeozoic sequence from the Lower Cambrian to Silurian strata of the Polish and Ukrainian parts of the Carpathian Foredeep basement in the Tarnogród–Stryi area were evaluated based on the results of geochemical analyses of 475 rock samples collected from 45 wells. The best source rocks were found in the Silurian strata where the present total organic carbon (TOC) content is up to 2.6 wt%. They occur in the vicinity of Wola Obszańska, where the median of the present and the initial total organic carbon (TOC) contents in the individual wells amount to 0.98 and 1.6 wt%, respectively. The Cambrian and Ordovician strata have a poorer hydrocarbon potential and their present TOC content never exceeds 1 wt%. In all of the investigated Lower Palaeozoic strata, organic matter is represented by the oil-prone Type-II kerogen deposited in anoxic or sub-oxic conditions. The maturity of source rocks ranges from early mature (the initial phase of the low-temperature thermogenic processes) in selected zones of the Silurian strata in the vicinity of Wola Obszańska, through the middle and the final phase of “oil window” in the Ordovician and Cambrian strata in the Polish part of the study area, to the overmature stage in the Ordovician strata in the south-eastern part of the study area (Ukraine).
Źródło:
Annales Societatis Geologorum Poloniae; 2012, 82, 1; 65--80
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Habitat and hydrocarbon potential of the Palaeozoic source rocks in the Kraków–Rzeszów area (SE Poland)
Autorzy:
Więcław, D.
Kotarba, M. J.
Kowalski, A.
Kosakowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/191373.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
source rock
hydrocarbon potential
Rock-Eval pyrolysis
biomarkers
stable carbon isotopes
Palaeozoic basement
Małopolska Block
Polish Carpathian Foredeep
Opis:
The quantity, genetic type and maturity of organic matter dispersed in Ordovician, Silurian, Devonian and Lower Carboniferous strata in the basement of the Carpathian Foredeep between Kraków and Rzeszów were determined based on the results of organic geochemical analyses of 600 rock samples collected from 44 wells. The best source rocks were found in the Silurian strata where the total organic carbon (TOC) content is up to 6.6 wt% and the median value equals ca. 1.5 wt%. The median values of the initial organic carbon contents in individual wells vary from 1.2 to 3.5 wt%. The Ordovician, Lower Devonian and clastic facies of the Lower Carboniferous strata can be considered as an additional source of hydrocarbons with the median TOC values of 0.27, 0.56 and 0.53 wt%, respectively. The Middle and Upper Devonian strata as well as the carbonate facies of the Lower Carboniferous strata have much lower quantities of organic carbon, although in these strata levels with elevated TOC contents were observed. In the Lower Palaeozoic and Lower Devonian strata, the oil-prone, low-sulphur Type II kerogen is present, whereas in the younger divisions presence of the gas-prone Type III kerogen is visible. In the Lower Carboniferous clastics gas-prone kerogen dominates. The Silurian and clastic facies of the Lower Carboniferous strata have been deposited in the normal marine conditions, whereas the Ordovician, Devonian and carbonate facies of the Lower Carboniferous strata usually experienced reducing conditions. The source rocks are mostly at the initial and middle phase of the low-temperature thermogenic processes. Locally, immature (in the Lower Carboniferous carbonates in the vicinity of Łąkta gas-condensate field) or late-mature (in the Middle and Upper Devonian strata in the area of Grobla–Pławowice oil field) source rocks were observed.
Źródło:
Annales Societatis Geologorum Poloniae; 2011, 81, No 3; 375-394
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic correlation of source rocks and natural gas in the Polish Outer Carpathians and Paleozoic–Mesozoic basement east of Kraków (southern Poland)
Autorzy:
Kotarba, M. J.
Więcław, D.
Bilkiewicz, E.
Dziadzio, P.
Kowalski, A.
Powiązania:
https://bibliotekanauki.pl/articles/2060588.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polish Outer Carpathians
Paleozoic–Mesozoic basement
source rock potential
natural gas
biomarkers
stable carbon
hydrogen isotopes
nitrogen isotopes
Opis:
Natural gas-source rock correlations in the Polish Outer Carpathians and Paleozoic–Mesozoic basement in the Kraków–Brzesko–Nowy Sącz area (southern Poland) have been established. In the Dukla and Sub-Silesian units, mixed kerogen Type-II/III or III/II occurs. The organic matter is immature or low-mature. The Oligocene Menilite beds of the Silesian Unit are rich in TOC and contain gas-prone Type III kerogen of low maturity. In the Paleozoic–Mesozoic basement, the TOC content and residual hydrocarbon potential vary in the Middle and Upper Devonian strata, Mississippian carbonate and clastic facies and Middle Jurassic strata. The Paleozoic strata are capable of thermogenic hydrocarbon generation, while organic matter in the Middle Jurassic rocks is generally immature. Gaseous hydrocarbons accumulated both in the Silesian and Dukla units of the Polish Outer Carpathians and in the Mesozoic basement are genetically related to thermogenic and microbial processes. The Outer Carpathian natural gas was generated mainly from the Type-II/III kerogen of the Oligocene Menilite beds. The thermogenic gases from the Mesozoic basement were generated from Devonian and Mississippian (carbonate) Type-II and mixed II/III kerogens and probably from Silurian/Ordovician Type-II kerogen and Middle Jurassic Type-III/II kerogen occurring at more than 7 km depth. Microbial methane migrated into the Outer Carpathian flysch succession from the Miocene strata of the Carpathian Foredeep.
Źródło:
Geological Quarterly; 2017, 61, 4; 795--824
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka macierzystości wybranych utworów fliszowych w przygranicznej strefie polskich Karpat Zewnętrznych
Source rock characteristic of the selected flysch deposits in the transfrontier area of the Polish Outer Carpathians
Autorzy:
Kosakowski, P.
Więcław, D.
Kotarba, M. J.
Powiązania:
https://bibliotekanauki.pl/articles/183729.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
geochemia naftowa
potencjał węglowodorowy
Karpaty zewnętrzne
warstwy menilitowe
kreda górna
kreda dolna
petroleum geochemistry
hydrocarbon potential
Outer Carpathians
Menilite Beds
Upper Cretaceous
Lower Cretaceous
Opis:
Charakterystykę geochemiczną poziomów potencjalnie macierzystych utworów fliszowych jednostek alochtonicznych wschodniej części polskich Karpat Zewnętrznych wykonano dla dolnokredowych warstw wierzowskich, lgockich i spaskich, górnokredowych warstw istebniańskich i inoceramowych oraz oligoceńskich warstw menilitowych. W analizie wykorzystano wyniki badań geochemicznych 875 próbek skał z profili 11 odwiertów i 48 odsłonięć w polskiej i przygranicznej ukraińskiej części Karpat Zewnętrznych. Wyniki badań geochemicznych potwierdzają, że warstwy menilitowe są najlepszymi skałami macierzystymi. Ropotwórczy kerogen II typu jest generalnie niedojrzały lub dojrzały w fazie wczesnej "okna ropnego". Parametry kinetyczne kerogenu warstw menilitowych są zbliżone w jednostkach śląskiej i skolskiej oraz wyraźnie niższe w jednostce borysławsko-pokuckiej. Pozostałe analizowane kredowe wydzielenia litostratygraficzne lokalnie spełniają ilościowe kryterium macierzystości i mogą uzupełniać bilans węglowodorowy utworów fliszowych Karpat.
Potential source rock horizons of the flysch cover were geochemically characterized in the eastern border area of the Polish flysch Carpathians: Lower Cretaceous Verovice, Lgota and Spas Beds, Upper Cretaceous Istebna and Inoceramian Beds as well as Oligocene Menilite Beds. The results of geochemical analyses of 875 rock samples collected from 11 boreholes and 48 outcrops in the Polish Outer Carpathians as well as from the adjacent Ukrainian were analyzed. The results indicate that Menilite Beds are the best source rocks of the Carpathian flysch cover in all analyzed tectonic units. The oil-prone Type II kerogen, deposited in marine environment of regular salinity, was proved to be usually immature or mature at an early stage of "oil window". Kinetic parameters of organic matter dispersed in the Menilite Beds, calculated based on organic sulphur content, are similar for the Silesian and Skole units and significantly lower in the Boryslav-Pokuttya Unit. The remaining lithostratigraphic divisions: Verovice, Lgota, Spas, Istebna and Inoceramian Beds, locally meet the source-rock requirements and can supplement the hydrocarbon balance of the Carpathians.
Źródło:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2009, 35, 4/1; 155-190
0138-0974
Pojawia się w:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potencjał węglowodorowy skał macierzystych i geneza gazu ziemnego akumulowanego w utworach miocenu zapadliska przedkarpackiego w strefie Rzeszowa
Hydrocarbon potential of source rocks and origin of natural gases accumulated in Miocene strata of the Carpathian Foredeep in Rzeszów area
Autorzy:
Kotarba, M. J.
Więcław, D.
Kosakowski, P.
Kowalski, A.
Powiązania:
https://bibliotekanauki.pl/articles/2074398.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
zapadlisko przedkarpackie
miocen autochtoniczny
kopalna substancja organiczna
geochemia
potencjał węglowodorowy
gaz ziemny
izotopy trwałe
Carpathian Foredeep
autochthonous Miocene
organic matter
hydrocarbon potential
methane
gas origin
microbial processes
organic geochemistry
stable isotopes
Opis:
In the autochthonous Upper Badenian and Lower Sarmatian strata of the Carpathian Foredeep in the Rzeszów area the total organic carbon (TOC) contents vary from 0.02 to 1.26 wt. %(average 0.64 wt. %). Geochemical studies on the dispersed organic matter demonstrated the presence of gas-prone type III (humic) kerogen with small admixtures of algal type II kerogen. At depths less than 2,500 metres the organic matter is immature, thus microbial processes predominated. Methane concentration in natural gases accumulated within Miocene strata usually exceeded 94 vol. %and was generated by microbial reduction of carbon dioxide. Microbial methane was generated mainly during deposition of autochthonous Miocene sediments, but it is possible that this process continues today on a small scale. Higher gaseous hydrocarbons (mainly ethane and propane), which are usually minor constituents (concentrations less than 0.4 vol. %), were generated during diagenetic processes and at the initial stage of the low-temperature thermogenic processes. The slight changes in the geochemical indices of dispersed organic matter and isotope ratios of natural gases with depth are evidence of the homogeneity of deposition of humic organic matter in shallow marine basin during the Late Badenian and the Early Sarmatian and the fact that similar gas generation conditions can be found in the Miocene sequence. Generation and accumulation of microbial methane and the formation and charging multiple stacked reservoirs within the autochthonous Miocene strata, e.g., Palikówka, Jasionka, Stobierna and Terliczka deposits, was facilitated by rhythmic and cyclic deposition of clays and sands and their very high sedimentation rate.
Źródło:
Przegląd Geologiczny; 2005, 53, 1; 67--76
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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