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F-GEO-Naturvitenskap, geofag

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

Awarded: NOK 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.

Funding scheme:

F-GEO-Naturvitenskap, geofag

Thematic Areas and Topics

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