Slides - engine
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EGS Resource in France and Europe Albert Genter, L. Guillou-Frottier, N. Debeglia, Ch. Dezayes Engine Launching Conference 12-15 February 2006 Orléans, France Session 3 BRGM 12-15 February 2006 What types of EGS systems? Fractured rocks located in a young graben conditions with low permeability conditions ex. Upper Rhine Graben Fractured rocks around active hydrothermal systems ex. Bouillante, Larderello Deep hard rocks within a complex basin ex. Pannonian basin Deep sedimentary formations ex. North German basin High Heat Production granites ex. Variscan granites Deep fractured granites within stable areas ex. Paris basin ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Heat Structural conditions Sufficient temperatures Pre-existing fractures EGS Concept Suitable lithology Tectonic conditions Hard rocks Stress regime Fluids Low permeability ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Temperatures Fractures Borehole data Extrapolated Temp. maps Field mapping Seismic survey EGS Concept 3D tools Lithology Stress conditions Gravi-mag data Borehole data Stress measurements Other techniques Fluids Borehole data Thermal springs ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Extrapolated temperatures at 5 km depth Lithuania German basin Eger Cornwall Rhine graben Massif central Limagne Catalonia Urach Molasse basin Provence Tuscany Latium Hurtig et al., 1992 modified by GEIE EMC, 2000 12-15 February 2006 Greek grabens Turkey Campidano ENGINE Launching Conference - BRGM Orléans Pannonian basin Schematic map of the main EGS types Tertiary graben + volcanism Complex back-arc basin + volcanism Thick sedimentary basin Outcropping granite ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Alpine front The Western European Rift System: first order anomaly Ziegler et al., Eucor-Urgent project ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Dèzes et al., 2004 Lithology derived from gravi-mag inversion Soultz St Rhine graben ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Temperatures and Tertiary grabens in France EGS surface 30,000km² ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Paris basin: Second order geothermal anomaly ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Paris basin: Gravi-Magnetic data 2600000 2500000 2400000 2300000 2200000 100000 300000 0 500000 200000 700000 400000 900000 600000 Km 2550 2550 2500 2500 mGal nT/km 15 2450 10 2450 15 5 0 2400 -5 12 2400 9 -10 -15 6 2350 -20 2350 -25 3 -30 0 -35 2300 2300 -40 -3 -45 550 600 0 650 50 700 100 750 150 800 200 12-15 February 2006 600 650 700 750 800 Km Bouguer Anomaly ENGINE Launching Conference - BRGM Orléans 550 0 50 100 150 200 Km Magnetic data - vertical gradient Deep basement rocks below the Paris basin Hd 1 Ho1 Go1 Le1Gs1 Bh1 BG 101 2540 ALC1 BLS101 2520 RL4 RL1 RL3 MD101 HD101 PB401 TH101 6 PB101 PB402 2500 RL2 A901 PB201 SJC101 VET 1 AMS 101 ARY1 2 2480 RL5 SMR101 7 GRP 2 MOR1 LOL1B NO 101 DN1 FEX1 VAR1 LCV1 SMN101 BAU1 2460 CR 1 2 ROS1 MTS101 SIS1 2440 Ba1 ORM 1D IVR101DCSM1D CBG1D BVL1 AZ1 LHC1D MT 1 IDG1 VLL1D CRG1 CSN 1 CRY1 BRU1 VXP1 8 CFX1 SDN1 SY101 LHE101 2420 VGN1/1GD LJU 1 LFI1 RAM1 Granites DPR1 NT1 MTR1D CCN1 GRY1 CLV1COB1D LSB 1 LST1 LQB1 ETP1 CIN1 HLH1 CDM1 CG1 AN1 2' LCRB BRET VLG3D VUS1 VLG1VLN1D MCY BNY1 1CNY1 HTE1 LBG 1DMRL5 BBL1D BSY1 BCV1 BVD1 CHM1 SVY 1 NG 1 DOE1 VDL1 CH101 LRM 1 2400 2380 1 LVI 1 CHN3 CHN1 LHE1 GV109 MSG1 SJS3D 2" HRM1 FDB1 SMB17 SMB18D SMB201 VAX101 JZ101 CPY1 ART1 CO1 PUI1 FLY1 2360 LDM1 MPS1 CLD1 ABE1 RLV 1 VSY101 SIL1 LRY1 2340 PAS1 BI1 RBN1 JA1 SSG1 *GMEL2 *GMEL1 2320 LG1 3 2300 5 QU1 VX1 SEY2 SEY301 4 FGT1 CH1 COR1 AN2 AN1 AN3 AN4 BLT1 2280 OY2 OY1 SP1 BR1 SG20 LFE1 CY1 VR3 560 580 600 620 640 660 0 680 CU1 SD1 700 50 12-15 February 2006 720 740 760 780 800 Km 100 Sondages Pseudo-densités Permo-trias, Permien Carbonifère Sédimentaire paléozoïque et briovérien Granite Magmatisme basique Micaschistes et gneiss Volcanisme acide Volcanisme basique ENGINE Launching Conference - BRGM Orléans FGT2 CO1 EP1 MR1 2.6 2.62 2.64 2.66 2.68 2.7 Zones magnétiques Zones légères et amagnétiques 2.72 2.74 2.76 2.78 CNRS64 1 Planche 3 - Synthèse Interprétation gravimétrique et magnétique combinée et nature du socle CGG85 EGS potential in Europe 12-15 February 2006 EGS potential calculations Quantity of energy: Eth (J) Eth = CrdrV(Tr-Ts) Cr : heat capacity of the granite in J/kg.K-1, dr: granite density kg/m3, V: rock volume in m3, Tr: temp. at depth in °C, Ts: temp. at surface in °C Method of Jung et al. 1992 Temperature map areas with T°>180°C ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 EGS Potential in Europe Sweden DK UK Poland Germany Czec Slovakia High HFR potential Moderate HFR potential Low HFR potential France Austria Hungary Romania Croatia Italy No calculations but promising HFR potential Bosnia Serbia Bulgaria Spain Turkey Greece ENGINE Launching Conference - BRGM Orléans 12-15 February 2006 Conclusion > Several EGS types > Local-scale resource analysis based on geophysical data • • Lithology and deep seated geology Large-scale faults > Needs for predictable EGS maps • • • • • Geophysical measurements/methods able to image deep geology (I-GET) Geothermal resource (temperature, heat flow) Stress regime Permeability distribution 2D, 3D tools and modelling ENGINE Launching Conference - BRGM Orléans 12-15 February 2006
