Strategy for a reassessment of the EGS potential of Europe Genter - - PowerPoint PPT Presentation

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Strategy for a reassessment of the EGS potential of Europe Genter - - PowerPoint PPT Presentation

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Strategy for a reassessment of the EGS potential of Europe Genter A., Kohl Th., Ledru P., Van Wees J.D. genter@soultz.net Vilnius, Lithuania, Final Conference, 12-15 Feb 2008 European Economic Interest Group Heat Mining 12-15 Feb. 08

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12-15 Feb. 08 ENGINE Vilnius

Strategy for a reassessment of the EGS potential of Europe

Genter A., Kohl Th., Ledru P., Van Wees J.D. genter@soultz.net Vilnius, Lithuania, Final Conference, 12-15 Feb 2008

European Economic Interest Group “Heat Mining”

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Why a reassessment?

> Why do we need a (re)evaluation of the EGS potential?

  • There is no EGS georesource or potential EGS map in Europe
  • Hidden resource: heterogeneities – uncertainty - risky
  • Quantify the heat in place in several areas or non conventional

reservoirs

  • Various studies in different countries or areas but need to be

harmonized in Europe

  • Inform decision makers, politicians, industry, scientists, media

> How evidence the EGS resources in Europe?

  • Define existing and innovative EGS concepts/targets
  • Take into account technological progresses (binary cycle systems)

and the impact in terms of drillable depths

  • Needs of regional studies by combining geoscientific and socio-

economic data

Elaborate a series of thematic EGS georesource maps

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What types of EGS systems?

Crystalline-rocks

Radiogenic granites (Variscan belt, Lithuanian basement) Active grabens Rhine graben (Soultz, Landau, Basel) Eger graben, Limagne, Catalonia, Sardinia

Conduction dominated EGS Low natural permeability Sediments

North German basin (Gross Schönebeck) Molasse basin (Altheim, Riem, Unterhaching)

Metamorphic rocks

Variscan belt (Urach) Tuscany (Larderello)

Unproductive hydrothermal systems Volcanics areas

Guadeloupe La Réunion (Indian Ocean) Iceland, Russia, Greece, Portugal, Turkey, Spain, ….

Unconventional Geothermal reservoirs Geopressured reservoirs

Pannonian Basin

Supercritical Reservoirs

Iceland

Oil/gas fields

Where are the fractured reservoirs at drillable depths in acceptable tectonic conditions hosted in hard rocks? What is the energy embedded in such areas?

Innovative concepts

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EGS Concept

Heat Tectonic conditions

Stress regime

Suitable lithology

Hard rocks

Fluids

Low permeability Pre-existing fractures Sufficient temperatures

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  • Deep temperatures in Europe
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12-15 Feb. 08 ENGINE Vilnius > 6 France Spain Italy Poland Romania Turkey Greece Bulgaria Germany Hungary Sweden Slovakia Austria Czec Serbia UK DK Croatia Bosnia

EGS Potential in Europe

High HFR potential Moderate HFR potential Low HFR potential No calculations but promising HFR potential

Genter et al., 2004

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Conductive dominated EGS Low natural permeability

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Regional scale: deep crystalline rocks in Lithuania

Sliaupia et al., 2006

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Potential EGS areas from outcropping granite in Europe

From A. Forster, GFZ, 2006

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Tertiary graben + volcanism Complex back-arc basin + volcanism Thick sedimentary basin Outcropping granite Alpine front

Schematic map of the main EGS types

EGS typology in Europe

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Fracture systems in the Eger graben

Eger

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Geothermal potential in Germany

Huenges et al., 2005

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Investigation of National Swiss Geothermal Resources

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Unproductive hydrothermal systems Volcanic areas

a

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Geothermal in Russia (Povarov, 2006)

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Hot areas around hydrothermal systems in Guadeloupe (Bouillante)

Sanjuan et al., 2007 Goguel, 1965 Temperatures measured at 2 m depth

99,7° C Isotherm 50° C

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Barelli et al., 1995

Temperatures at depth in Larderello (Tuscany)

Temperature at the top of the upper reservoir

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Unconventional geothermal reservoirs Geopressured reservoirs

Pannonian basin

Supercritical reservoirs

Icelandic reservoirs

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Wolfgramm, 2006

High enthalpy reservoirs in Hungary

A USTRIA SLOVENIA

Southern Al ps Northern Calcareous Alps V i e n n a B a s i n Western Car pathians East ern Carpathians East Slovakian Basin Transsylvanian Basin Southern Carpathians Apuseni Mts.

Great Hungarian Plain

Danube Tisza Slavonian Insel bergs Bülck Mts. Sa va Basin

Drava Basin DRAVA

  • L. Balaton

CROA TI A SERBIA UKRA INE POLA ND

HUNGARY

PANNONIAN BASIN

A d r i a t i c s e a

Moesian platfor m

ROMA NIA

A L C A P A T I S Z A

Vienna Bratislava Graz Budapest Cluj Beograd Zagreb Cracow

L i t t l e H u n g a r i a n P l a i n Trans danubian Range

100 200 km

Outer Carpathians

Pieniny Klippen Belt Inner Alpine-Carpathian Mountain belt and the Dinarides

Dinarides

Neogene v olcanic rock Alpine-Carpathian flysch belt Mid Hungarian Line

Bohem i an Massif Ukrainian Platfor m Mecsek Mts. Villany Mts.

Nort h Hungaria n Range

B a c

  • n

y

V e r t e s G e r e c s e B u d a i Pilis Börzsöny Cserhat Bükk Matra Tokaij

area under discussion

potential high-enthalpy reserv oirs 4 1 2 3 6 7 8 5 9 10

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Supercritical reservoirs in Iceland

Isor, 2007

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Georesource strategy

> Explore new EGS concepts/targets

  • Ex. The limit between the post Paleozoic sedimentary

cover and the basement in western Europe

  • Hidden granites, Oil/gas fields, border of conventional

fields, ….

  • Improve tools for quantifying the geothermal potential
  • Combination with socio-economic needs

> We need boreholes > We need EGS sites in various contexts

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Thickness of the sediments (Tesauro et al., 2006)

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12-15 Feb. 08 ENGINE Vilnius > 23 16° 19° 22° 48°

47°

46°

Mesozoic (mainly carbonate) rocks in near-surface position Paleozoic (mainly crystalline) rocks in near-surface position Neogene volcanic rocks in near- surface position

Isogeothermal surface

  • f 200 °

C in Hungary

2500 m 3000 m 3500 m 4000 m 4500 m 5000 m 5500 m 3000 m 3500 m 4000 m 4500 m 5000 m 5500 m

Depth below see level of:

200 ° C rock temperature in the basement 200 ° C rock temperature in the young sediments

B UDAPEST L AK E BALATON L A K E F E R Tİ

D A N U B E RIVER TISZA

Drillholes with measured temperatures > 150 ° C

From P. DÖVÉNYI (ELTE Budapest, Hungary) & L. RYBACH (GEOWATT AG Zürich, Switzerland), Orléans ENGINE launching Conference, February 2006

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Paris basin: Gravi-Magnetic data

55 60 650 700 7 50 8 00 23 00 23 50 24 00 24 50 25 00 25 50
  • 4
5
  • 4
  • 3
5
  • 3
  • 2
5
  • 2
  • 1
5
  • 1
  • 5
5 1 1 5 5 10 15 200

mGal K m

5 50 60 6 50 700 7 50 800 23 00 23 50 24 00 24 50 25 00 25 50
  • 3
3 6 9 1 2 1 5 5 10 1 50 200

nT/ km Km

10 00 00 30 000 50 000 700 000 900 000 22 000 00 23 000 00 24 000 00 25 000 00 26 000 00 2 000 00 4 000 00 60 00 00 Km

Bouguer anomaly Magnetic data vertical gradient Debeglia, 2005

560 580 600 6 20 640 660 680 700 720 740 76 7 80 800 2280 2300 2320 2340 2360 2380 2400 2420 2440 2460 2480 2500 2520 2540 VR3 SD1 CY 1 CU1 L FE1 SG2 0 BR1 SP1 O Y 1 OY2 MR1 EP1 AN4 AN 3 BLT 1 CO1 AN2 AN1 COR1 CH1 F G T 2 F G T 1 S EY3 0 1 SEY2 VX1 Q U1 LG1 *GM EL 1 *GMEL2 SS G 1 J A1 RBN1 BI1 P AS1 L RY1 VSY1 0 1 SIL1 ABE 1 RLV 1 CLD1 M P S1 LDM1 FL Y1 PUI1 CO1 ART1 CPY1 J Z1 0 1 CIN1 ETP1 VAX1 0 1 SMB2 0 1 SMB1 8 D S M B1 7 F DB1 L R M 1 CH1 0 1 V DL1 DOE1 HRM 1 NG 1 SVY 1 CHM1 HT E1 BVD1 BC V 1 BSY1 BB L 1 D SJ S3 D BNY 1 MRL5 LBG 1 D MCY 1 V LN1 D VLG1 CNY1 V US1 GV1 0 9 VL G3 D M S G 1 BRET LHE1 L CRB LST1 RAM 1 LSB 1 CLV1 COB1 D AN1 LF I1 L J U 1 GRY1 CHN1 CG1 CDM1 HLH1 LVI 1 CHN3 VGN1 / 1 GD L Q B1 L HE1 0 1 SY1 0 1 CSM1 D CBG1 D IVR1 0 1 D SDN1 VXP1 ORM 1 D CFX1 BRU1 CRY1 CSN 1 CRG1 VLL 1 D LHC1 D AZ1 IDG1 MT 1 BVL1 MTR1 D CCN1 SIS1 MTS 1 0 1 NT 1 ROS1 DPR1 Ba 1 CR 1 BAU1 S M N1 0 1 L CV1 VAR1 F EX1 DN1 NO 1 0 1 LOL1 B MOR1 GRP 2 ARY 1 AM S 1 0 1 PB4 0 2 VET 1 SJ C1 0 1 PB1 0 1 SMR1 0 1 RL5 T H1 0 1 PB4 0 1 HD1 0 1 M D1 0 1 RL 3 PB2 0 1 RL1 A9 0 1 RL 4 RL2 BLS1 0 1 ALC1 BG 1 0 1 Bh 1 L e 1 Gs 1 Go1 Hd 1 Ho1

2.6

  • 2. 62

2.64 2.66 2.68 2.7

  • 2. 72

2.74 2.76 2.78

50 100

Km

Planche 3 - Synthèse Interprétation gravimétrique et magnétique combinée et nature du socle

Pseudo-densités

Permo-trias, Permien Carbonifère Sédimentaire paléozoïque et briovérien Granite Magmatisme basique Micaschistes et gneiss Volcanisme acide Volcanisme basique

1 2 3 2 2' 2" 4 6 8 7 5

Sondages Zones magnétiques CNRS64 CGG 85 Zones légères et amagnétiques

1

Granites

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Quantity the geothermal potential

> Heat in Place

>

ρ ρ ρ ρcP specific heat capacity of rock [J m-3 K-1],

>

V Volume of resource [m3],

>

Tprod Temperature of produced fluid [°C]

>

Treinj Temperature of re-injected fluid [°C].

> Transient Production

>

(ρ ρ ρ ρcP)f specific heat capacity of fluids [J m-3 K-1] Q produced flow rate [m3 s-1].

) (

reinj prod P HIP

T T V c E − ⋅ ⋅ = ρ

∫ ∫

∆ ∆

⋅ − ⋅ ⋅ = ⋅ =

t reinj prod f P t th ut

dt T T Q c dt p E ) ( ) (ρ

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Tertiary graben in France: Limagne resource analysis

Baujard et al., Vilnius, 2008 Genter et al., WGC05, 2005

Clastic reservoir potential

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Example of current potential analysis calibrated on thermal profiles

Benken Basserdorf Lindau Local Model Benken Local Model Kloten Boettstein Local Model 100 – 110mW/m2. Weiach Boettstein - Leuggern 110mW/m2. 90mW/m2. 80mW/m2. Beznau Birmenstorf Riniken Local Model 110mW/m2. Kaisten Local Model 110mW/m2. Eglisau Ruchfelden Riniken Zurzach Kaisten

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Van Wees et al., ENGINE Workshop Leiden, 2007

Some EGS possible European sites

Grabens Deep sediments Molasse Basement rocks

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Conclusion

Innovative EGS concepts integrating socio- economic demand but also new technologies (exploration, drilling, exploitation) Documents able to map the main features of those innovative EGS concepts Boreholes for calibrating and for testing those concepts Improve tools (GIS, 3D, Resource analysis)