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Geothermal: The environmental answer to non-intermittent generation?

Geothermal: The environmental answer to non-intermittent generation?. Istanbul, October 10 th 2013. Matthias Kliesch Region West. Short introduction into geothermal power generation hydrothermal System. Source: EnBW. Risk Analysis Risk Assessment Workshop.

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Geothermal: The environmental answer to non-intermittent generation?

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  1. Geothermal: The environmental answer to non-intermittent generation? Istanbul, October 10th 2013 Matthias KlieschRegion West

  2. Short introduction into geothermal power generationhydrothermal System Source: EnBW

  3. Risk AnalysisRisk Assessment Workshop • Defining, identifying and quantifying (likelihood and magnitude) of risks in a structured procedure. • Determination of risk tolerance or capability of bearing risks on balance • Definition of risk • Structured identification and screening in sectors of • – operational, • – financial, • – strategic and • – political risks • Quantification of top risks • Management/Handling of risks, comments on insurability • => clear understanding of the major risks.

  4. Risk AnalysisRisk Assessment Workshop

  5. Loss HistoryAccumulated Indemnifications • Examples on drilling risk and Lost in Hole (LiH) losses • 1100 m 13 3/8“ Casing fallen 500-600 m deep into the well • Casing stuck when ran in hole • Casing collapse at injection test • Well instability => stuck drill pipe • Differential Sticking => stuck drill pipe • Memory Tool lost close to the well head • Losses often occur when well design is changed during the drilling phase! A diligentrisk evaluation is still required A: exploration risk B: drilling risk and LiH C: losses during operational phase

  6. Loss Historyamounts of losses • Examples on operational phase losses • Compensation tank collapsed while discharging • Leakages on shell type heat exchangers due to inappropriate seal material • Pump (ESP) motor burned • Pump (ESP) frequency converter failed • Pump (Lineshaft) corrosion at rising pipe • Pump (Lineshaft) broken lineshaft • Turbine, rotor failiure A: exploration risk B: drilling risk and LiH C: losses during operational phase

  7. Loss Historydistribution of magnitudes • Examples exploration risk losses • Total loss dry well • Stimulation measures to increase volume flow • Sidetrack/Multilaterals • Increase filter length • Increase diameter of filter length • Massive acidising under pressure • Importand: intense cleaning of the well after drilling especially injector

  8. Contakt Matthias Kliesch Key Client Executive Marsh GmbH Kasernenstr. 69 D-40213 Düsseldorf] Telefon +49 (0)211-8987-373 Telefax +49 (0)211-8987-621 Mobil +49 (0)1520-1624-373 Matthias.Kliesch@marsh.com www.marsh.de Marsh GmbHKasernenstraße 6940213 Düsseldorf Telefon: (02 11) 89 87-0 Telefax: (02 11) 89 87-369

  9. Sitz: Frankfurt am Main; Handelsregister: HRB 12141; Amtsgericht: Frankfurt am Main HSBC Trinkaus & Burkhardt (BLZ 300 308 80) 1260 014 Geschäftsführung: Siegmund Fahrig (Vors.), Dr. jur. Georg Bräuchle, Oliver Dobner, Dr. jur. Peter Hoechst, Jochen Körner, Erwin Lehmann, Thomas Müller Vorsitzender des Aufsichtsrates: Sven Alexander Kado

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