Fault sealing controls at the Snorre field
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Project description
The fluid contacts step up from the south towards the north at the Snorre field, whereas the pre-production fluid overpressures vary little across the field. This makes the field well suited for investigation of fault sealing which is uninterrupted by fluid overpressure differences, where predictive fault-seal models have comparatively good chance of being predictive. The goal of the thesis is to (a) improve the understanding of across-fault sealing at Snorre, and (b) to improve the general understanding of across-fault sealing and how well such sealing can be predicted. Such knowledge will be important to understanding subsurface fluid flow in a broader sense and its importance for Co2 storage, oil and gas exploration and production, and groundwater movement.
The thesis will aim at explaining the main controlling factors for the fluid pressures and hydrocarbon contact positions at the Snorre Field and their development through time. The work will include characterization of sealing and nonsealing faults at Snorre, a.o by performing seismic interpretation, well log analyses, juxtaposition analyses, analyses of the clay content in the fault zones, analyses of the field’s pre-production fluid pressure data and analyses of the field’s fluid pressure changes during production and injection.
Proposed course plan during the master's degree (60 ECTS):
GEOV251 (10), GEOV272 (10), GEOV274 (10), GEOV362 (10), SDG207 (5), GEOV352 (5), GEOV362 (5), Geosoftware special curriculum (5)
Felt- lab- og analysearbeid
Analyses of data provided by Equinor and CGG
