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F-GEO-Naturvitenskap, geofag

Fluid flow and overpressure in fault zones and fracture systems in West Norway

Tildelt: kr 1,7 mill.

To analyse groundwater flow and potential yield in fault zones in West Norway, and to characterise fluid flow in fracture networks outside these fault zones, there will be: - Statistical studies and modelling of groundwater-conducting fracture systems (re servoirs) using extensive new field data from selected outcrops inside and outside fault zones in West Norway. - Analytical modelling of fluid flow and pressure in simple fracture systems, including the effects of host-rock layering (with variations in Yo ung's moduli and in situ stresses) and discontinuities on the propagation and arrest of hydrofractures. - Numerical (BEASY) modelling of the potential reactivation and permeability of major fault zones in West Norway in relation to two main stress sources , ridge push and postglacial doming. - Analogue modelling of the reactivation of old faults as zones of mode I (tensile or opening) fractures in the uppermost 1 km of thecrust in West Norway. Project results should help locate successful water wells and include: - Potential yield of fault zones in comparison wtih fracture systems outside fault zones in West Norway. - Effects of fault-zone trend in relation to the current stress filed and regional groundwater flow on potential fault-zone yield.

Budsjettformål:

F-GEO-Naturvitenskap, geofag

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