WP3WP6 meeting Investigation of Unconventional Geothermal Resources and in particular Enhanced Geoth

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WP3/WP6 meetingInvestigation of Unconventional
Geothermal Resources and in particular Enhanced
Geothermal SystemsConveners A. Manzella Th.
KohlBRGM
Engine Launching Conference 12-15 February 2006
Orléans, France Session 3

• BRGM

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Welcome in Orléans
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BRGM Map
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Outline

• BRGM Presentation
• ENGINE Contract
• BRGM Geothermal activities
• WP3/WP6

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BRGM

• Major public institution in the Geoscience field.
  
• Triple role of scientific research, public
  expertise and international cooperation
• BRGM operates as the French Geological Survey
• Objectives
• Understand geological phenomena, develop new
  methodologies and techniques, produce and
  disseminate pertinent, high-quality data
• Provide the necessary tools for public policies
  concerning surface, subsurface and
  natural-resource management, natural-risk and
  pollution prevention, and regional development
  and planning

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8 thematic areas www.brgm.fr

• Mineral resources
• Water
• Development planning and natural risks
• Contaminated land and waste management
• Environmental metrology
• Mapping and geoinformation
• Geothermal energy and geological storage of CO2
• Digital information systems

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BRGM Staff

• 844 employees, including more than 600
  scientists, engineers and technicians
• 29 regional offices in metropolitan France and
  its Overseas Departments and Territories
• Teams working in more than 40 countries
• Turnover for 2003 81.49 million
• Legal status A public institution with
  industrial and commercial interests under the
  joint supervision of the Ministry for Research,
  the Ministry for Industry and the Ministry for
  Environment.

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Research C. FOUILLAC Public Service L.
BEROUD International J.C. GUILLANEAU Production
, Informatics and Quality F. LELANN Strategic
Planning J. VARET
General Secretary R. GUERILLON General
Inspectorate P.L KIRCHER Human Resources M.
BOUILLEAU Accounting J.P. RIBERT Communications
and Publications G. LEHIDEUX-VERNIMMEN

Chairman
Ph. VESSERON
Managing Director D. Houssin
Operational Divisions
Geology and Geoinformation D. VASLET
Mineral Resources J. TESTARD
Environment and Processes D. DARMENDRAIL
Analysis and Mineral Characterisation A. M.
FOUILLAC
Regional Geological Surveys M. BEURRIER
Development Planning and Natural Risks H.
MODARESSI
Water D. PENNEQUIN
Information Systems andTechnologies J.M.
TROUILLARD
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Geological map of France at 150,000 1060 maps
(92 maps published)
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ENGINE Contract N019760

• Contract signed by ENGINE partners sent to the
  Commission on 23/12/05
• Contract signed by the Commission on 06/02/06
• According to the contract the pre-financing will
  be made within 45 days from the date of the
  Commission's signature (before 21/03/06)
• Administrative questions A. Beauce

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BRGM main geothermal activities
2005 2006 2007

Fundings
EGS Pilot Plant Soultz
Europe, 6FP, Ademe
Ademe, Feder, Régions
High enthalpie project DOM
ENGINE (EGS) I-GET (Geophysical exploration)
Europe, 6FP
Ademe, Arene, EDF, Régions
Low geothermal energy projects
Very low geothermal energy projects
Europe, Ademe
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Heat vapor
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WP3/WP6 Investigation of Unconventional
Geothermal Resources and in particular Enhanced
Geothermal Systems

• Integration of recent progress in knowledge
  concerning the European lithosphere
• Mechanical behaviour of the upper crust and its
  response to stress, fluid circulation and
  heat-flow gradients
• Exploring different types of geothermal reservoir
• High-energy geothermal fields (active/recent
  volcanism and peripheral zones)
• High-temperature / low-permeability reservoirs
  (hot dry rocks)
• New deep, and possibly supercritical, geothermal
  reservoirs
• Multipurpose geothermal reservoirs
• Technological challenge of the investigation
  phase
• Improved exploration methods for deep geothermal
  resources
• Combined geological and geophysical imaging
  methods for defining and assessing reservoirs for
  potential heat exchange
• 3D modelling and imaging of permeable systems

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BRGM experience in geothermal exploration

• Geophysical exploration (H. Fabriol)
• Resistivity survey Ex. Bouillante
• Gravity Magnetic studies
• Geochemical exploration (B. Sanjuan)
• Gas survey (CO2, CH4, Helium) (La Réunion,
  Bouillante)
• Borehole fluid monitoring (Soultz, Bouillante,
  Martinique)
• Fluid composition (Chemistry, isotopic chemistry)
• Geological exploration (A. Genter H. Traineau)
• Volcanic and structural studies (La Réunion,
  Martinique, Bouillante, Dominique)
• Hydrothermal alteration (Bouillante, Soultz,
  Martinique)
• Borehole monitoring (Soultz, Urach, Martinique,
  Bouillante)
• Borehole imagery techniques (Soultz)
• Well logging in granite (Soultz)

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Application of geophysics to geothermal resources
at BRGM

• More than 25 years of experience into geothermal
  exploration in volcanic, granitic and sedimentary
  context
• Lesser Antilles, La Réunion, Milos, El Salvador,
  etc.
• Paris Basin and Limagne Basin
• Soultz-sous-Forêts (France)
• Tools developed
• Potential methods (gravity, magnetism)
• Electrical resistivity DC and EM, MT
• Passive seismic microseismicity and broadband
  for exploration and exploitation
• Marine seismic (shallow depth)
• Monitoring surface deformations microgravity and
  SAR Interferometry
• Meetings to be attended Potsdam (Workshop 1),
  Pisa (Workshop 2) and Zürich (Workshop 3)
• Exchange of personnel ??
• Contact h.fabriol_at_brgm.fr

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Resistivity cross section at Bouillante (H.
Fabriol)
Fabriol et al., WGC05
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Fracture analysis at Soultz
Fractures collected from high-resolution oriented
image logs

• about 14 km of image logs analysed

Amplitude
Transit time
Dezayes et al., WGC05
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3D modelling and geothermics

• Bouillante, Guadeloupe, Volcanic formations
• Limagne, North Massif Central, Clastic reservoirs

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3D Model at Bouillante (B. Sanjuan)
EarthVision
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Thermal model permeable zones at Bouillante
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Limagne Model clastic reservoirs
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3D model of clastic reservoirs sandstones-sands
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WP3/WP6 Investigation of Unconventional
Geothermal Resources and in particular Enhanced
Geothermal Systems

• Integration of recent progress in knowledge
  concerning the European lithosphere
• Mechanical behaviour of the upper crust and its
  response to stress, fluid circulation and
  heat-flow gradients
• Exploring different types of geothermal reservoir
• High-energy geothermal fields (active/recent
  volcanism and peripheral zones)
• High-temperature / low-permeability reservoirs
  (hot dry rocks)
• New deep, and possibly supercritical, geothermal
  reservoirs
• Multipurpose geothermal reservoirs
• Technological challenge of the investigation
  phase
• Improved exploration methods for deep geothermal
  resources
• Combined geological and geophysical imaging
  methods for defining and assessing reservoirs for
  potential heat exchange
• 3D modelling and imaging of permeable systems

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WP4/WP7 Drilling, stimulation and reservoir
assessment

• Dynamics of the geothermal field, stimulation and
  reservoir assessment
• Stress pattern
• Stimulation and improvement of the permeability
  of a geothermal field
• Dynamics of the fissured horizons and induced
  microseismicity
• Reservoir physics and physical properties of
  rocks and hydro fracturing group
• Fluids, rock-fluid interaction, tracer and
  geochemistry, scaling factor
• Drilling
• Drilling cost effectiveness and feasibility of
  high-temperature drilling
• Micro-drilling

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WP5/WP8 Exploitation, economic, environmental
and social impacts

• Exploitation
• Unconventional exploitation systems
• Development of innovative tools for exploitation
• State-of-the-art of down-hole fluid treatments
• Plant and reservoir monitoring
• Re-injection
• A global economic approach of geothermal energy
• Sustainability of geothermal energy
• Multiple integrated uses group
• Socio-economic benefits of geothermal
  exploitations
• Environmental impacts
• Barriers to development
• Microseismicity and risk assessment related to
  stimulation and exploitation
• Conditions for a 100 clean exploitation of
  geothermal energy
• Increasing policy makers awareness and public
  acceptance
• Building a network for political support
• Societal needs and public requirement
• Communication policy

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WP9 Risk evaluation for the development of
geothermal energy

• Decision support systems enable an evaluation of
  the technical and socio-economic risk for the
  development of the geothermal energy