Fracturing of igneous intrusions emplaced in organic-rich shale: Implications for hydrothermal flow, petroleum systems and exploration in volcanic basins
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- Institutt for geofag [2342]
Abstract
Hot igneous intrusions entering organic-rich shale trigger hydrocarbon generation and hydrothermal flow. This may release large quantities of methane to the atmosphere, causing global climate crises, or alternatively form petroleum accumulations. The thesis uses a combination of field geology and numerical modelling to characterize fracture networks of igneous intrusions and show that fracturing can play a key role in the hydrothermal transport of hydrocarbons around intrusions. Additionally, seismic modelling provides new insight to seismic imaging and interpretation of intrusions in complex geological settings.List of papers
Paper 1: Ole Rabbel, Palma, J. O., Mair, K., Galland, O., Spacapan, J. B., Senger, K. Fracture networks in shale-hosted igneous intrusions: Processes, distribution, and implications for igneous petroleum systems. Journal of Structural Geology, 150 (September 2021), 104403. DOI: 10.1016/j.jsg.2021.104403. The paper is included in the thesis. The published version is available at: https://doi.org/10.1016/j.jsg.2021.104403 |
Paper 2: Ole Rabbel, Galerne, C., Hasenclever, J., Galland, O., Mair, K., Palma, J. O. Impact of permeability evolution in igneous sills on hydrothermal flow and hydrocarbon transport in volcanic sedimentary basins. (in prep.) To be published. The paper is not available in DUO awaiting publishing. |
Paper 3: Ole Rabbel, Mair, K., Galland, O., Grühser, C., Meier, T. Numerical modeling of fracture network evolution in organic-rich shale with rapid internal fluid generation. Journal of Geophysical Research: Solid Earth, 125, e2020JB019445. (2020). DOI: 10.1029/2020JB019445. The article is included in the thesis. Also available at: https://doi.org/10.1029/2020JB019445 |
Paper 4: Ole Rabbel, Galland, O., Mair, K., Lecomte, I., Senger, K., Spacapan, J.B., Manceda, R. From field analogues to realistic seismic modelling: a case study of an oil-producing andesitic sill complex in the Neuquén Basin, Argentina. Journal of the Geological Society, 175(4), 580-593. (2018). DOI: 10.1144/jgs2017-116. The article is not available in DUO due to publisher restrictions. The published version is available at: https://doi.org/10.1144/jgs2017-116 |