Towards a European Geothermal Deep Drilling Program Ernst HUENGES, - - PowerPoint PPT Presentation

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Towards a European Geothermal Deep Drilling Program Ernst HUENGES, - - PowerPoint PPT Presentation

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Towards a European Geothermal Deep Drilling Program Ernst HUENGES, David BRUHN, Bernhard PREVEDEL, Thomas SCHULTE GeoForschungsZentrum Potsdam and the ENGINE group Vilnius, 14.02.2008 1 Ernst Huenges, Towards a European Geothermal Deep

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1 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Towards a European Geothermal Deep Drilling Program

Ernst HUENGES, David BRUHN, Bernhard PREVEDEL, Thomas SCHULTE GeoForschungsZentrum Potsdam and the ENGINE group Vilnius, 14.02.2008

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2 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Outline

  • introduction
  • EU regional peculiarities
  • technological challenges
  • road map towards the European Geothermal Drilling Program
  • conclusions
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3 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Outline

  • introduction
  • EU goals
  • advantages of an expanded geothermal industry
  • specific geothermal requirements
  • existing activities
  • EU regional peculiarities
  • technological challenges
  • road map towards the European Geothermal Drilling Program
  • conclusions
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4 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

EU goals

  • Deployment of renewable energy

– end of other resources – demand of mitigation of CO2-emissions

  • Geothermal Energy because of

– huge potential to address a significant proportion to future energy provision especially as base load – Industry politics (Lissabon) to keep the technological leadership

  • Italy, Iceland
  • EGS research
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5 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

advantages for an expanded geothermal industry

  • World market (2020/2050) only electricity/Year

– (200/ >1000 TWh) (conservative estimation), EGS: ~ order of magnitude higher

200.000 400.000 600.000 800.000 1.000.000 1.200.000 2000 2010 2020 2030 2040 2050 Year GWh / year

Geothermal electricity production

Fridleifsson et al, 2008

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6 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

advantages for an expanded geothermal industry

  • World market (2020/2050) only electricity/Year

– (200/ >1000 TWh) (conservative estimation), EGS: ~ order of magnitude higher – mitigation (substitute coal or gas) of (0,1…0,2/0,5…1) Giga tons CO2-emissions

200 400 600 800 1000 2000 2010 2020 2030 2040 2050 Year Million tons CO2

geothermal electricity mitigation substitute (present technology) coal gas

  • il

present geothermal (120 g/kWh) future (10 g/kWh)

/ Year Fridleifsson et al, 2008

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7 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

advantages for an expanded geothermal industry

  • World market (2020/2050) only electricity/Year

– (200/ >1000 TWh) (conservative estimation), ~ times 1 order higher using EGS – Mitigation (substitute coal or gas) of (0,1…0,2/0,5…1) Giga tons CO2-emissions

  • Value added

– transmute hydrocarbon industry and its services – significant proportion to future energy provision – bring electricity in remote areas – clean energy

0% 5% 10% 15% 20% 25% E l S alvador (967) Kenya (1,088) Philippines (9,253) Iceland (1,483) C

  • sta R

ica (1,145) Nicaragua (271) G uadeloupe (F rance) (102) New Zealand (2,774) Indonesia (6,085) Mexico (6,282) G uatemala (212) Italy (5,340) US A (17,917) J apan (3,467)

Fridleifsson et al, 2008

(GWh/year)

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8 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

specific geothermal requirements

  • improve the yield of geothermal repositories and reduce the risks

associated with their exploration and exploitation

  • reduction of costs (2/3 of it is drilling)

Drilling Pump Stimulation Planning Thermal circuit Other Energy conversion

Frick et al. 2007

  • improve the yield of geothermal repositories and reduce the risks

associated with their exploration and exploitation

  • reduction of costs (2/3 of it is drilling)
  • investments in technology developments

– exploration – drilling – stimulation – completion (corrosion) – convertion – reservoir assessment

  • public acceptance (locally required)

Drilling is main bottleneck of further development

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9 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

existing activities

  • EU in the past years, for example at Soultz-sous-Forêts (Alsace) for HDR
  • Geothermal rush (Australia, Germany & other countries). Some projects

failed!

  • ICDP
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Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008 10

existing activities

  • EU in the past years, for example at Soultz-sous-Forêts (Alsace) for

application to HDR processes

  • Gold rush (Australia, Germany & other countries)
  • ICDP restricted to scientific goals, nevertheless, synergies exists
  • US DOE will start EGS-demonstration triggered by MIT report
  • And last not least
  • tremendous experience

in shallow high temperature reservoir drilling

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11 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Outline

  • introduction
  • EU regional peculiarities
  • shallow high temperature reservoirs
  • deep high temperature reservoirs
  • specific „market“ aspects
  • technological challenges
  • road map towards the European Geothermal Drilling Program
  • conclusions
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12 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

EU regional peculiarities

  • shallow high temperature reservoirs (Italy, Iceland, Turkey,..)

– Standardisation of drilling exists – Drilling with low mud weight into the reservoir (air drilling) – Extending the existing fields (3D seismics in Tuscany) – Entering into deep reservoirs (IDDP)

  • deep high temperature reservoirs (Central Europe,..)

– drilling to 3 to 6 km required – Standardisation for geothermal wells required – Mitigation of formation damage, large diameter, directional drilling,.. – Application of EGS – concepts is the rule including all implications

  • specific „market“ aspects

– politically vulnerability due to dramatic lack of energy, substitution of

  • il&others is required..

– Demonstration of EGS technologies for export (competition EU-US) – Capacity building – training of employees for future EGS deployment

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13 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Outline

  • motivation
  • EU regional peculiarities
  • technological challenges
  • required standardisation
  • optimisation of the access to the reservoirs
  • scientific accompaniment
  • road map towards the European Geothermal Drilling Program
  • conclusions
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14 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

technological challenges

  • standardization

standardization of geothermal drilling and stimulation operations:

  • reliability of drilling by system studies with focus on operational issues
  • development of drilling instruments and tools and completion

components (corrosion), drilling large diameters,

  • high deviation and large drill holes using directional drilling based on

innovative 3D seismic geothermal exploration,

  • drilling mud technologies,
  • “intelligent” well completion designs allowing reservoir monitoring,
  • learning from traditional geothermal areas such as Larderello/Italy,

Iceland or the Philippines as well as from the hydrocarbon industry,

  • and fulfil R&D needs as follows
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15 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

stimulation

engineering geothermal reservoirs

  • mechanically, thermally,

and chemically

  • self propping, propping,
  • r hybrid fracs

Adapt procedures from HC to specific geothermal demands

  • standards for treatments,

well heads, and frac strings

R&D needs

Fokker 2007 Zimmermann 2007

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16 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Improved monitoring techniques

  • understand induced seismicity
  • develop induced seismicity

mitigation concepts

Dorbarth 2006

R&D needs

stimulation

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17 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

technological challenges

  • lowest possible pay-zone formation damage
  • ptimisation of the access to the reservoirs
  • maximum characterization of the target geology,
  • drilling mud technologies,
  • low pump volume at under-balanced conditions,
  • aerated mud systems operated in counter-flush mode (even with large

bit sizes at penetration rates equivalent to oilfield rotary drilling

  • advance this drilling method for depths beyond 3000 m and hole

deviation angles up to 90 degree and long horizontal as well as multi- lateral well sections

  • …
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18 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Project development

  • Exploration
  • Drilling, Completion
  • New stimulation methods…….
  • Mitigation of seismic risks,…
  • Monitoring thermal water loop
  • Conversion systems, efficiency improvement,..
  • Rate of heat extraction /sustainable life of resource

technological challenges

  • scientific accompaniment
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19 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Outline

  • introduction
  • EU regional peculiarities
  • technological challenges
  • road map towards the European Geothermal Drilling Program
  • What can be done in the scientific community?
  • What can be expected from economy?
  • What can be done in each (interested) country?
  • What should be expected by EU?
  • conclusions
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20 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

geothermal science Who has to be involved? European Geothermal Drilling Program economy politics

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European Geothermal Drilling Program

21 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

road map towards the European Geothermal Drilling Program 1

geothermal scientific community

  • solving the key issues where basic research is required
  • focussing research on future geothermal energy provision;
  • understand operational issues & exchanging experience,
  • Create international science teams
  • science partnership with industry (capacity building)

economy

  • Participate in geothermal industry,

become stakeholder to be prepared for future markets,

  • Earn money using geothermal

energy or its value added

  • Push development and use the

acceleration (first move advantage)

  • Be open for science partnership,

share the knowledge each (interested) country

  • Stimulating technology development

(feed in law), Insurance of drilling

  • Research and Drilling investments

in chosen representative sites

  • Further improvement of frame

conditions (mining law, net integration..)

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European Geothermal Drilling Program

22 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

road map towards the European Geothermal Drilling Program 2

  • What should be expected by EU?

– establish a longterm coordination or steering group for geothermal drilling and technology development – Drilling investments in chosen representative sites – Successive geothermal technology development with each European drilling, completion, and testing operation – Provide incentives for industry with own drilling activities to join the program with the prerequisite of sharing experiences and allowing (risky) new developments in the wells

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InnovaRig in Dürrnhaar Dezember 2007

23 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Conclusions (from ENGINE work)

  • establishing an initiation group

and an advisory board (Coordination and Action)

  • key site selection - competition
  • organize incentives for industry

to share experience

  • preparing 20-50 drilling projects

with accompanying scientific projects European Geothermal Drilling Program is required starting with

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Leiden workshop discussion Genter, 2007

Thank you for your attention

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25 Ernst Huenges, Towards a European Geothermal Deep Drilling Program, Vilnius 14.02.2008

Thank you for your attention

Schellschmidt & Hurter 2003