Public defense 28 March: Dimitrios Ktenas

Dimitrios Ktenas has submitted the following academic thesis as a part of the doctoral work at UiT – The Arctic University of Norway, Department of Geosciences:

«Quantification of the magnitude of net apparent erosion in the southwestern Barents Sea by using compaction trends in shales and sandstones – Implications for hydrocarbon exploration»

The doctoral work has been carried out at the Department of Geosciences at UiT and North Energy ASA, and was funded by GLANAM – GLAciated North Atlantic Margins, under the EU FP7 program Marie Curie ITN. This research also corresponds to a contribution of the Research council of Norway (RCN)-funded project ‘Research centre for Arctic Petroleum Exploration’ (ARCEx).

The trial lecture (kl. 10:15-11:00) and the public defense of the PhD thesis (kl. 12:15-15:00) will take place on the 28th March, 2019 at the UiT The Arctic University of Norway, Department of Geosciences, Auditorium 1207, Naturfagbygget, Tromsø.

The subject of the trial lecture topic is: «The importance of exhumation to the petroleum system, and how the Barents Sea compares to other exhumed basins worldwide»

The following assessment committee has been appointed to assess the thesis:

  • Professor Anthony George Doré, Equinor-UK (1. Opponent)
  • Professor Alejandro Escalona, Faculty of Science and Technology, University of Stavanger (UiS) (2. Opponent)        
  • Researcher Andreia Plaza Faverola, Department of Geosciences, UiT The Arctic University of Norway (Internal member and leader of the committee)

Professor Alfred Hanssen, Director of ARCEx – Research centre for Arctic Petroleum Exploration has been appointed as the head of the defense.

The candidate has been supervised by Adjunct Professor Erik Henriksen, UiT/North Energy ASA (now at Henriksen Maritime AS) (main supervisor), Professor Karin Andreassen, Department of Geosciences, UiT (co-supervisor), Dr. Jesper Kresten Nielsen (MOL Norge Group) (co-supervisor) and Ivar Meisingset, First Geo AS (now at ModelGeo AS) (co-supervisor).

Summary of thesis

On the Norwegian Continental Shelf, the western Barents Sea shelf is generally ice-free and proven by recent discoveries as a frontier area for hydrocarbon exploration. During the Cenozoic, most of the areas of the Barents Sea were subjected to significant uplift and erosion, processes that had important consequences on the petroleum systems.

This thesis aimed to investigate the estimation of the net apparent erosion in the southwestern Barents Sea and consequently to determine the regional variation and magnitude of the net apparent erosion by studying the compaction of selected stratigraphic layers.

An integrated approach based on seismic interpretation of multi-client seismic data, shale and sandstone compaction combined with a rock physics application was used in order to estimate the amount of net apparent erosion in the study area.

The findings serve as input to the overall understanding of the reservoir characteristics, the maturity of the source rocks, timing of expulsion and the retention of hydrocarbons in the traps.