Integrated analysis of kerogen maturation and microfracture dynamics in organic-rich shales
Sammendrag
The thesis investigates what causes the creation and growth of microfractures within shales of natural systems. Note, shales represent roughly 50% of all rocks at or near the surface on the Earth. The approach of the study was conducted at both a very large scale (km) and very small scale (um). This in order to better understand the behavior of shales as a whole, and the impact when influenced by high pressure and temperatures. A particular focus was placed on the relationship between the organic and inorganic components. The result of this and findings are clear boundaries around the degree to which the organic material could potentially impact the properties of the shale for a broad variety of use cases in the future like e.g. geothermal energy, CCUS, nuclear waste storage, critical resource extraction, geotechnical analysis, and similar purposes.Artikkelliste
Paper I. Johnson, J.R., Hansen, J.A., Rahman, J., Renard, F., and Mondol, N.H., (2022a). Mapping the maturity of organic-rich shale with combined geochemical and geophysical data, Draupne Formation, Norwegian Continental Shelf. Marine and Petroleum Geology, 138(2022), 105525. DOI: 10.1016/j.marpetgeo.2022.105525. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.marpetgeo.2022.105525 |
Paper II. Johnson, J.R., Kobchenko, M., Mondol, N.H., and Renard, F., (2022b). Multiscale synchrotron microtomography imaging of kerogen lenses in organic-rich shales from the Norwegian Continental Shelf. International Journal of Coal Geology, 253(2022), 103954. DOI: 10.1016/j.coal.2022.103954. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.coal.2022.103954 |
Paper III. Johnson, J.R., Kobchenko, M., Johnson, A.C., Mondol, N.H., and Renard, F., (2022c). Experimental modelling of primary migration in a layered, brittle analogue system. Tectonophysics, 840(2022), 229575. DOI: 10.1016/j.tecto.2022.229575. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.tecto.2022.229575 |