Fluid transport in reservoirs

Much of my work during the past decades has focused on rock fractures and fluid transport, including field, analytical, and numerical studies of fractures and faults in fluid-filled reservoirs of various kind. These include reservoirs of ground water, geothermal water, magma, oil, and gas. My teaching at Royal Holloway University of London also includes MSc and undergraduate courses on fluid transport in reservoirs.

I have an extensive experience in working on fractured basement rocks as well as sedimentary rocks, in particular carbonate rocks. Together with my students, I have published many papers on fractured reservoirs and fluid transport, and I teach courses on this topic at Royal Holloway University of London. Field areas include localities in Norway, Iceland, Italy, Germany, and in the UK. My  work on these topics focuses on

  1. obtaining detailed quantitative data sets on extension fractures and faults with a view of understanding the fluid-transport potential,
  2. making analytical models as to the fluid overpressure and transport during fracture development,
  3. making numerical models on how fracture propagate and link up into clusters that reach the percolation threshold or, alternatively, become arrested at layer contacts (or at other discontinuities), whereby the percolation threshold may not be reached, and
  4. understanding the development of carbonate-reservoir permeability in relation to fault rocks (fault core and damage zone) and how the fault rocks give rise to local stresses which, in turn, control fault slip and permeability development.

Selected publications on this topic

Gudmundsson, A., 2000.
Active fault zones and groundwater flow.
Geophys. Res. Lett. 27, 2993-2996.

Gudmundsson, A., 2000.
Fracture dimensions, displacements and fluid transport.
J. Struct. Geol. 22, 1221-1231.

Gudmundsson, A. and Brenner, S.L., 2001.
How hydrofractures become arrested.
Terra Nova 13, 456-462.

Gudmundsson, A., Berg, S.S., Lyslo, K.B., and Skurtveit, E., 2001.
Fracture networks and fluid transport in active fault zones.
J. Struct. Geol. 23, 343-353.

Gudmundsson, A., 2001.
Fluid overpressure and flow in fault zones: Field measurements and models.
Tectonophysics 336, 183-197.

Crampin, S., Volti, T. Chastin, S., Gudmundsson, A. and Stefansson, R., 2002.     Indication of high pore-fluid pressures in a seismically active fault zone. Geophys.
J. Int. 151, F1-F5.

Gudmundsson, A., Fjeldskaar, I. and Gjesdal, O., 2002.
Fracture-generated permeability and groundwater yield in Norway.
NGU Bulletin 439, 61-69.

Gudmundsson, A., Fjeldskaar, I. and Brenner, S.L., 2002.
Propagation pathways and fluid transport in jointed and layered rocks in geothermal fields.
J. Volcanol. Geotherm. Res. 116, 257-278.

Lie, H. and Gudmundsson, A., 2002.
The importance of hydraulic gradient, lineament trend, proximity to lineaments and surface drainage pattern for yield of groundwater wells on Askøy, West Norway.                          NGU Bulletin 439, 51-60.

Brenner, S.L. and Gudmundsson, A., 2002.
Permeability development during hydrofracture propagation in layered reservoirs.         NGU Bulletin 439, 71-77.

Gudmundsson, A., Gjesdal, O., Brenner, S.L. and Fjeldskaar, I., 2003.
Effects of growth of fractures through linking up of discontinuities on groundwater transport.
Hydrogeol. J. 11, 84 – 99.

Brenner, S.L. and Gudmundsson, A. 2003.
Permeability in layered reservoirs: field examples and models on the effects of hydrofracture propagation. In: Stephansson, O., Hudson, J.A. and Jing, L. (Eds.): GeoProc, International Conference on Coupled T-H-M-C Processes in Geo-systems: Fundamentals, Modelling, Experiments and Applications, Stockholm. 641-646.

Babiker, M. and Gudmundsson, A., 2004.
The effects of dykes and faults on groundwater flow in an arid land: the Red Sea Hills, Sudan.
J. Hydrol. 297, 256-273.

Philipp, S.L., Gudmundsson, A., Hoffmann, S., Oelrich, A., Bartelsen, T., 2007.            How structural geology can contribute to make geothermal projects successful. Proceedings of the European Geothermal Congress, 30 May – 1 June 2007 in Unterhaching, Germany.

Larsen, B., Grunnaleite, I., Gudmundsson, A., 2010.                                                      How fracture systems affect permeability development in shallow-water carbonate rocks: an example from the Gargano Peninsula, Italy.                                                             Journal of Structural Geology doi:10.1016/j.jsg.2009.05.009

Larsen, B., Gudmundsson, A., Grunnaleite, I., Saelen, G., Talbot, M., 2010.           Influence of key sedimentary interfaces on fracture pattern, linkage and cluster formation inperitidal carbonate rocks.                                                                                                Mar. Petrol. Geol., 27, 1531-1550.

Larsen, B., Gudmundsson, A.,  2010.                                                                             Linking of fractures in layered rocks: implications for permeability.                             Tectonophysics doi:10.1016/j.tecto.2010.05.022