Results 151 to 160 of about 8,930 (209)
Porosity estimation in kerogen-bearing shale gas reservoirs
Journal of Natural Gas Science and Engineering, 2018 Porosity is a fundamental petrophysical parameter in shale gas reservoirs that governs the space for hydrocarbon storage, and directly determines the free gas amount and absorbed gas capability.
Yihuai Zhang, Reza Rezaee
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2006
[Extract] Kerogen is the solid, high molecular-weight fraction of sedimentary organic matter (OM) that is insoluble in organic solvents (e.g. chloroform) as oppoosed to the soluble fraction called bitumen. Kerogen is a macromolecule of condensed cyclic nuclei linked by heteroatomic bonds or aliphatic chains.
Wüst, Raphael A.J., Bustin, R Marc
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[Extract] Kerogen is the solid, high molecular-weight fraction of sedimentary organic matter (OM) that is insoluble in organic solvents (e.g. chloroform) as oppoosed to the soluble fraction called bitumen. Kerogen is a macromolecule of condensed cyclic nuclei linked by heteroatomic bonds or aliphatic chains.
Wüst, Raphael A.J., Bustin, R Marc
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Mechanism of kerogen pyrolysis in terms of chemical structure transformation
Fuel, 2017 This article presents an overview on carbon chemical structure transformation to understand kerogen thermal decomposition based on the chemical structure of kerogen.
Guangwen Xu, Dengguo Lai, Shiqiu Gao
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Kerogen Chemistry 9. Removal of Kerogen Radicals and Their Role in Kerogen Anhydride Decomposition
Energy & Fuels, 2006By treatment with CrCl2, the radical populations of Kimmeridge and Bakken kerogens were significantly decreased. When both kerogens are mildly heated, anhydride formation at low temperatures can be detected by infrared spectroscopy only when radicals have been removed by CrCl2 treatment.
John W. Larsen +3 more
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Kerogen Chemistry 4. Thermal Decarboxylation of Kerogens
Energy & Fuels, 2005Infrared spectra confirm that, when heated to 200 °C, Bakken kerogens form anhydrides from carboxylic acids. The anhydrides in turn thermally decompose at temperatures below 250 °C. The thermal production of CO, the absence of CO2, and the low temperature of the anhydride decomposition are all consistent with a radical chain mechanism initiated by a ...
Ryuichi Ashida +2 more
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Kerogen‐bound and free hopanoic acids in the messel oil shale kerogen
Chirality, 2001AbstractThe distribution of the free and bound hopanoic acids in both unheated and heated (350°C for 50 h) kerogens, isolated from the Messel oil shale, were analyzed by GC‐MS. The bound acids were released by subjecting the kerogen to three different treatments, namely, thermochemolysis in the presence of tetramethylammonium hydroxide (TMAH), as well ...
Abbott GD, Bashir FZ, Sugden MA
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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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Relationship of Kerogen and Sporopollenin–A Reply
Nature, 1970OUR suggestion1 that kerogen present in relatively unmetamorphosed Pre-Cambrian sediments was composed of sporopollenin was initiated by our analyses and the observations of others that the organic chemistry of such sediments appears relatively constant.
J, Brooks, G, Shaw
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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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