Petroleum source rock evaluation of the Alum and Dictyonema Shales (Upper Cambrian–Lower Ordovician) in the Baltic Basin and Podlasie Depression (eastern Poland)

Kosakowski, Paweł; Kotarba, Maciej J.; Piestrzyński, Adam; Shogenova, Alla; Więcław, Dariusz

doi:10.1007/s00531-016-1328-x

Cited by 23 publications

(18 citation statements)

References 44 publications

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“…This shale can be as thick as 180 metres in offshore Denmark (Nielsen and Schovsbo, 2006) and 90 metres in southern Sweden (Pool et al, 2012). The TOC content of the Alum Shales is typically higher than 2 wt.% (Schovsbo, 2003) and up to wt.% in Middle Sweden (Kosakowski et al, 2016).…”

Section: Study Area and Samplesmentioning

confidence: 99%

On the changing petroleum generation properties of Alum Shale over geological time caused by uranium irradiation

Yang

Schulz

Horsfield

et al. 2018

Geochimica et Cosmochimica Acta

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An interdisciplinary study was carried out to unravel organic-inorganic interactions caused by the radiogenic decay of uranium in the immature organic-rich Alum Shale (Middle Cambrian-Lower Ordovician). Based on pyrolysis experiments, uranium content is positively correlated with the gas-oil ratios and the aromaticities of both the free hydrocarbons residing in the rock and the pyrolysis products from its kerogen, indicating that irradiation has had a strong influence on organic matter composition overall and hence on petroleum potential. The Fourier Transform Ion Cyclotron Resonance mass spectrometry data reveal that macro-molecules in the uranium-rich Alum Shale samples are less alkylated than less irradiated counterparts, providing further evidence for structural alteration by αparticle bombardment. In addition, oxygen containing-compounds are enriched in the uranium-rich samples but are not easily degradable into low-molecular-weight products due to irradiation-induced crosslinking. Irradiation has induced changes in organic matter composition throughout the shale's entire ca. 500 Ma history, irrespective of thermal history. This factor has to be taken into account when reconstructing petroleum generation history. The Alum Shale's kerogen underwent catagenesis in the main petroleum kitchen area 420 to 340 Ma bp. Our calculations suggest the kerogen was much more aliphatic and oil-prone after deposition than that after extensive exposure to radiation. In addition, the gas sorption capacity of the organic matter in the Alum Shale can be assumed to have been less developed during Palaeozoic times, in contrast to results gained by sorption experiments performed at the present day, for the same reason. The kerogen reconstruction method developed here precludes overestimations of gas generation and gas retention in the Alum Shale by taking irradiation exposure into account and can thus significantly mitigate charge risk when applied in the explorations for both conventional and unconventional hydrocarbons.

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Section: Study Area and Samplesmentioning

confidence: 99%

On the changing petroleum generation properties of Alum Shale over geological time caused by uranium irradiation

Yang

Schulz

Horsfield

et al. 2018

Geochimica et Cosmochimica Acta

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“…The Furongian to Early Or do vi cian sed i men ta tion in the west ern part of the Bal tic Ba sin is re lated to the post-rift thermal sub si dence of the pas sive con ti nen tal mar gin of Baltica (Poprawa and Paczeoena, 2002). The Furongian and Lower Tremadocian bi tu mi nous shales of the Piaoenica For ma tion with lime stone interbeds and rich in TOC rep re sent shelf muds, de pos ited in anoxic or suboxic con di tions and their matu rity in creases to the SW to wards the TTZ (Kosakowski et al, 2017). A Lower Tremadocian black shale (Bia³owie¿a For mation) is doc u mented also in the north ern part of the Podlasie De pres sion (Szymañ ski, 1984).…”

Section: Discussionmentioning

confidence: 99%

Prospective zones of unconventional hydrocarbon reservoirs in the Cambrian, Ordovician and Silurian shale formations of the East European Craton marginal zone in Poland

Podhalańska

Feldman-Olszewska

Roszkowska-Remin

et al. 2020

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“…Tight gas is a type of natural gas, which is accumulated in the low porous (effective porosity) and low permeable rock. It can be closed in the different type of rocks, as sandstones, limestones, dolostones, shales (shale gas), or coals [21][22][23][24]. Tight gas or oil reservoirs are still challenging in finding the proper approach for detailed analysis [25,26].…”

Section: Methodsmentioning

confidence: 99%

Research on Fluid Flow and Permeability in Low Porous Rock Sample Using Laboratory and Computational Techniques

Krakowska

Madejski

2019

Energies

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The paper presents results of fluid flow simulation in tight rock being potentially gas-bearing formation. Core samples are under careful investigation because of the high cost of production from the well. Numerical simulations allow determining absolute permeability based on computed X-ray tomography images of the rock sample. Computational fluid dynamics (CFD) give the opportunity to use the partial slip Maxwell model for permeability calculations. A detailed 3D geometrical model of the pore space was the input data. These 3D models of the pore space were extracted from the rock sample using highly specialized software poROSE (poROus materials examination SoftwarE, AGH University of Science and Technology, Kraków, Poland), which is the product of close cooperation of petroleum science and industry. The changes in mass flow depended on the pressure difference, and the tangential momentum accommodation coefficient was delivered and used in further quantitative analysis. The results of fluid flow simulations were combined with laboratory measurement results using a gas permeameter. It appeared that for the established parameters and proper fluid flow model (partial slip model, Tangential Momentum Accommodation Coefficient (TMAC), volumetric flow rate values), the obtained absolute permeability was similar to the permeability from the core test analysis.

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Petroleum source rock evaluation of the Alum and Dictyonema Shales (Upper Cambrian–Lower Ordovician) in the Baltic Basin and Podlasie Depression (eastern Poland)

Cited by 23 publications

References 44 publications

On the changing petroleum generation properties of Alum Shale over geological time caused by uranium irradiation

On the changing petroleum generation properties of Alum Shale over geological time caused by uranium irradiation

Prospective zones of unconventional hydrocarbon reservoirs in the Cambrian, Ordovician and Silurian shale formations of the East European Craton marginal zone in Poland

Research on Fluid Flow and Permeability in Low Porous Rock Sample Using Laboratory and Computational Techniques

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