Barents Sea Rock Properties (BarRock)
Barents Sea Rock Properties (BarRock) combines rock physics, seismics, petrophysics, geomechanics, sedimentology and diagenesis to describe compaction and deformation processes in sedimentary basins. The project is focused on the burial, diagenesis and rock mechanical properties of sandstones and shales in the uplifted Barents Sea area.
The objectives are to analyze rock property distributions in shales and sandstones in the uplifted Barents Sea area, and to study porosity, permeability, seal integrity and deformation related to primary and secondary petroleum migration in uplifted cemented sedimentary sequences.
About the project
The project is within the strategic research area of the “Petroleum Systems and Basin Development” initiative financed by The Norwegian Research Council through the Petromaks Programme. This is a co-operative project between the Department of Geosciences, the Norwegian Geotechnical Institute, and research partners in USA and Russia.
Period: 2010-06 to 2014-09
Three PhD students (+ master students)
- The project aims to integrate sedimentology, diagenesis, geomechanical properties, rock physics, structural geology and geophysical/seismic properties to better understand the behaviour of sedimentary rocks in an uplifted area and how the fluids and fluid movement are affected during uplift.
- The challenge is to relate geology to geophysics where no satisfactory quantitative relations exist between different sedimentary rocks and their geophysical properties.
- Experimental compaction tests have provided a basis for understanding rock mechanical properties of different sediments.
- Studies of cemented rocks show that quartz cementation dominates porosity loss below a depth corresponding to about 70oC. Cementation processes continue also during uplift if the temperature is higher than about 70oC.
- Quantification of these potentially important stress relaxing cementation processes during uplift has not been addressed in detail before. Stress relaxation from cementation would potentially reduce brittle deformation due to stress redistribution related to uplift processes proposed for the Barents Sea area.