Engineering parameters of Draupne shale
Background and objective:
Draupne Formation is an organic rich shale in the North Sea, both source rock and an important caprock. It is supposed to act as the sealing unit for CO2 storage sites in the North Sea. Therefore, there is an increasing interest from petroleum/energy companies for the detail characterization of Draupne shale.
The objective of this study is to determine petrophysical parameters of intact cores (mineralogy, sedimentological environment, permeability) and properties of fracturs (surface roughness, mineral growth, striation). These properties will be integrated with the mechanical data of Draupne shale which are available from the previous and ongoing studies at NGI. The results will provide input to engineering designs for petroleum and CO2 storage projects.
This study comprise work for two master students where they will start with a common literature review but select different directions.
The two directions are:
- Characterisation of intact cores with focus on Troll Field and Smeaheia
- Characterization of fractured samples and integration with mechanical tests
Student will work with Microscope, Scanning Electron Microscope and XRD and develop competence and proficiency in interpreting results from such studies. Further, student will get familiar with the mechanical testing equipment at NGI laboratory (uniaxial test, triaxial test, indirect tensile test, direct shear test) and characterization methods for shales.
There are already core material available from Draupne shale. New cuttings will likely be provided for further analysis.
Learning outcomes and industry relevance:
Nowadays, there is a high focus on integrating properties of intact and fractured rocks with application to petroleum, civil and mining engineering projects. The learnings and the network from this project will provide excellent opportunities to work within the above mentioned industries as well as good possibilities for further research/PhD study. Students will work within two research projects (NCCS and SPHINCSS) sponsored by the Research Council of Norway and Statoil, Total, Shell.
The study is strongly linked to the Northern Lights Project; a new project run by Statoil, Total and Shell for CO2 storage in the North Sea.