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Kerogen Chemistry 2. Low-Temperature Anhydride Formation in Kerogens
Energy & Fuels, 2004Bakken kerogens react rapidly when heated at temperatures of 40−180 °C to form carboxylic acid anhydrides and water from carboxylic acids. Differential scanning calorimetry (DSC) shows a pronounced irreversible endotherm over this temperature range, demonstrating the occurrence of an endothermic chemical reaction.
John W. Larsen +4 more
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Automated Kerogen Classification in Microscope Images of Dispersed Kerogen Preparation
Mathematical Geosciences, 2008We develop the classification part of a system that analyses transmitted light microscope images of dispersed kerogen preparation. The system automatically extracts kerogen pieces from the image and labels each piece as either inertinite or vitrinite. The image pre-processing analysis consists of background removal, identification of kerogen material ...
L. I. Kuncheva +5 more
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Realistic molecular model of kerogen’s nanostructure
Nature Materials, 2016Despite kerogen's importance as the organic backbone for hydrocarbon production from source rocks such as gas shale, the interplay between kerogen's chemistry, morphology and mechanics remains unexplored. As the environmental impact of shale gas rises, identifying functional relations between its geochemical, transport, elastic and fracture properties ...
Bousige, Colin +11 more
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Primary migration by diffusion through kerogen: II. Hydrocarbon diffusivities in kerogen
Geochimica et Cosmochimica Acta, 1990Abstract Laboratory experiments were performed to assess diffusion through kerogen as a mechanism of liquid hydrocarbon transport through fine-grained rocks. Such transport can be important in primary migration within source rocks and in leakage through seals. Previous work with organic-coated model cores has shown that hydrocarbon diffusion through
Michele Moisio Thomas, Jamie A. Clouse
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Chemical Composition of Shale Kerogen (Kerogen-70) from Leningrad Oblast
Russian Journal of Applied Chemistry, 2001The chemical composition of various extracts from oil shale (kerogen-70) was studied in detail.
V. V. Platonov +4 more
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Chemical modelling of kerogens
Organic Geochemistry, 1987Abstract Models of kerogens belonging to the three classical Types have been represented at the following evolution stages: • -beginning of diagenesis (sensu-stricto), • -beginning of catagenesis, • -end of catagenesis. Chemical models are drawn, using analytical data obtained on natural samples: elemental analysis, electron ...
F. Behar, M. Vandenbroucke
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Effect of the Kerogen Molecular Structure on the Formation of Methane During Kerogen Pyrolysis
Australian Journal of Chemistry, 2018In this study, density functional theory (DFT) at the GGA/RPBE level was employed to examine the effects of the kerogen microstructure on the formation mechanism of methane during the pyrolysis of kerogen. The calculations prove that the evolution of CH4 during kerogen pyrolysis corresponds to demethylation, and the process of forming methane involves ...
Qing Wang, Xinmin Wang, Shuo Pan
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Kerogen based characterization of major gas shales: Effects of kerogen fractionation
Organic Geochemistry, 2015Abstract Research into the origin and the mode of entrapment and expulsion of natural gas from unconventional plays requires the isolation and separation of kerogen in its purest and most intact form from the rock matrix. This study expands on the comparative analysis of the effects that isolation methods, conservative closed system versus ...
Denet Pernia +2 more
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Diagenetic modification of kerogens
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1985Abstract Kerogen is the part of sedimentary organic matter that is not petroleum. It can be isolated by using acid destruction of minerals, except in recent sediments where this procedure results in important hydrolysis reactions. Whether the scale of observation is microscopic or molecular, kerogens are heterogeneous mixtures whose ...
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1978
As sedimentation and subsidence continue, temperature and pressure increase. In this changing physical environment, the structure of the immature kerogen is no longer in equilibrium with its surroundings. Rearrangements will progressively take place to reach a higher, and thus more stable, degree of ordering.
Bernard P. Tissot, Dietrich H. Welte
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As sedimentation and subsidence continue, temperature and pressure increase. In this changing physical environment, the structure of the immature kerogen is no longer in equilibrium with its surroundings. Rearrangements will progressively take place to reach a higher, and thus more stable, degree of ordering.
Bernard P. Tissot, Dietrich H. Welte
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