Geothermal Resources in Norway...Heat flow map Scandinavia (2011) Heat-flow measurements in Late...

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Geothermal Resources in Norway

Kirsti Midttømme1, Inga Berre1,2, Odleiv Olesen3

1 Christian Michelsen Research, 2 University of Bergen, 3Geological Survey of Norway

EGEC GEOELEC Workshop

January 24th, 2012 - Utrecht

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Fennoscandian Shield

Old massive rock

Low porosity

Low permeabilitiy

No sedimentary

basin onshore

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Jan Mayen – Volcanic Island

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Eruption of

Mt Beerenburg in 1970

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Bouvet Island – Volcanic Antarctic Island

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(Uninhabited)

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Heat flow map

Atlas of Geothermal Resources in Europe, European Comission , 2002

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Heat flow map 1970-2000

Heat-flow — heat-generation

studies in Norway

Tectonophysics, Volume 23, Issues

1–2, July 1974, Pages 31-48

Chandler A. Swanberg, M.D.

Chessman, Gene Simmons, S.B.

Smithson, G. Grønlie, K.S. Heier

Bottom lake measurements

Shallow borehole masurements

<200m

Not corrected for paleoclimate or

topography

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New heat flow sites (500-1000 m deep wells)

Data acquired

in the Kontiki,

HeatBar

and Coop

projects

2005

2004

2005

2004

Older than

2004

2008

Bjørnevatn

Båtsfjord

Vuoddašjav’ri

Leknes

Drag

Sulitjelma

Bleikvassli

Aure

Løkken

Hjerkinn

Lærdal

Stavanger

Hamar Hurdal

Berger Arnestad

Frederikstad

2011

Bergen

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Magnetic Isostatic residual

Gravity Potential field

data

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Varmestrøm

1970-1980

Varmestrøm fra

Kontikiprosjektet 2005-2007

(Pascal o.a. 2007)

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Deep underground

temperatures

derived from heat flow data

( Pascal o.a. 2010)

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Estimated Temperature at 5 km depth

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Heat flow map

Scandinavia

(2011)

Heat-flow measurements in Late Palaeoproterozoic

to Permian geological provinces in south and central

Norway and a new heat-flow map of Fennoscandia

and the Norwegian–Greenland Sea

Tectonophysics, Vol 473, 3–4, 2009, Pages 341-361

T.Slagstad, N. Balling, H. Elvebakk, K. Midttømme,

O. Olesen, L. Olsen, C. Pascal

Etter Slagstad o.a. (2009) og Pascal o.a. (2010)

Conclusions

1. 25% increase of heat flow values after climatic

corrections (36-77 mW/m2)

2. Observed thermal gradients between 14 and

27 ºC/km

3. Extrapolated temperatures to 5 km depth lie

between 75 and 140 ºC

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What’s going on in Norway

CGER – Norwegian Center for Geothermal Energy Research

R& D projects, drilling technology

Electro Pulse Drilling

Rotational Hammar drilling (Resonator)

Research project, modelling and simulation of geothermal systems -

flow and heat transport in fractured porous media (University of Bergen,

2009-2013)

Research project, drilling technology (Sintef, 2012-2016)

Deep shallow geothermal installations to 500 m depths.

Energy 21- A collective R&D strategy for the energy sector in Norway

Revised in 2011

Geothermal is not «the hottest» topic

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System modeling – shallow geothermal

system