Pressure and stress interactions in sedimentary basins
The objective of the project is to increase the understanding of and to quantify the geological processes controlling fluid flow and stress in sedimentary basins. A main activity is modelling the pressure depletion on a field scale and a regional scale, and its consequences for the stress state in the overburden. A particular concern is “blow-down” production. A reservoir enters the “blow-down” phase when production cannot justify expensive pressure support using injection wells. Blow down production may last for several decades, and it becomes dependent on the natural pressure support. Stress changes coupled to a changing fluid pressure will be modelled. Large pressure changes across faults or below cap rocks may cause stress changes that cause fracturing or reactivation of faults.
Norwegian Geotechnical Institute
Hans Martin Helset (SINTEF).
Contact person at IFE is Magnus Wangen.
Funding from Research Council of Norway and industry.