Print Email Facebook Twitter High-resolution magnetic susceptibility data interpretation in a well through the Miocene of the Vienna Basin Title High-resolution magnetic susceptibility data interpretation in a well through the Miocene of the Vienna Basin Author Nobile, J. Contributor Luthi, S.M. (mentor) Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Programme Petroleum Engineering Date 2015-08-13 Abstract Magnetic susceptibility (MS) represents a very important rock property to be measured. This can be done not only in the laboratory using rocks samples, but also on outcrops or with downhole tools in wells. This property is basically controlled by the type and concentration of magnetic minerals contained in the rock. It can be dominated by minerals that are paramagnetic (clays), diamagnetic (calcite, quartz), or ferromagnetic (magnetite, greigite). It seems to be highly affected by several environmental factors and complex processes, which control its response in the sediments. The present study constitutes a MSc. Thesis carried out at the Delft University of Technology within the Petroleum Engineering and Geosciences track. The apparent lack of correlation between the basic petrophysical properties and magnetic susceptibility acquired in Well Spannberg 21 was the igniter for considering this study. It was planned in order to determine the factor(s) responsible for the variations in magnetic susceptibilities measured in the borehole Spannberg-21 in the Vienna Basin (Austria). The development of this thesis is based on the use of a full data set of LWD and WL logs and drill cuttings available for the whole well interval. The data was acquired back in 2007 by the National Operating Company OMV, together with Schlumberger and Delft University of Technology. Previous researchers have studied the magnetic minerals in the area and some conclusions have been drawn regarding the chronostratigraphy, biostratigraphy, and magnetostratigraphy in this well. However, it was until now when the MS problem was tackled. This study was considered an open-ended research project from the beginning, since this was the first time that a project with such data and such a research objective was being conducted. Therefore, the result of each task was the basis for the next step. The Vienna Basin is very suitable for high-resolution studies like these because it has been widely described through several decennia. Moreover, the rapid sedimentation which occurred in this basin gave rise to the formation of thick sequences. Furthermore, downhole measurements are helpful because they provide a continuous record of the rock properties in the subsurface. The aim of this MSc. thesis is to perform a detailed analysis employing all the data available, combined with new measurements, in order to find an explanation on what controls the rocks' MS property, what are the reasons for its behavior, and what possible applications can be given after its interpretation. Subject magnetic susceptibility To reference this document use: http://resolver.tudelft.nl/uuid:e85b6238-cbe3-42e4-a1b2-8837e7650a90 Coordinates 48.43146, 16.76630 Part of collection Student theses Document type master thesis Rights (c) 2015 Nobile, J. Files PDF FINAL_MSc_THESIS_JUAN_NOBILE.pdf 27.52 MB Close viewer /islandora/object/uuid:e85b6238-cbe3-42e4-a1b2-8837e7650a90/datastream/OBJ/view