Click to edit Master title style IDDP Workshop 5 7-8 March 2007 - - PowerPoint PPT Presentation

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ENGINE Workshop 2 - Volterra

G.O.Fridleifsson

IDDP – Workshop 5

7-8 March 2007

Introduction

Gudmundur Omar Fridleifsson

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IDDP Workshop 5

G.O.Fridleifsson

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IDDP Workshop 5

G.O.Fridleifsson

Krafla

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IDDP Workshop 5

G.O.Fridleifsson

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IDDP Workshop 5

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Conventional geothermal systems Unconventional geothermal systems

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IDDP Workshop 5

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Basic T and P assumptions

• Temperature will increase with depth and follow the

boiling point curve of pure water down to the critical point (3400 – 3500 m) BPD-curve down to CPW

• Pressure will be hydrostatic down to the critical point

(CPW).

• Below CPW:

– Scenario 1: Temperature will increase by 100°C/km – Scenario 2: Constant density - isochore

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IDDP Workshop 5

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Reservoir temperature and pressure Static and Flowing

18000 16000 14000 12000 10000 8000 6000 4000 2000 1000 2000 3000 4000 5000 6000 7000 8000 100 200 300 400 500 600 700 800 900 10001100 6000 5000 4000 3000 2000 1000 10 20 30 40 50 60

Boiling water 20°C water Boiling water

Depth [m / feet] Pressure [MPa / psi] Temperature Pressure

100 200 300 400 500 600

Temperature [°C / °F]

6000 5000 4000 3000 2000 1000 10 20 30 40 50 60

Flowing well 550°C, 25 MPa, 9" pipe Flowing well, isochor, 9" pipe Boiling water 20°C wate

Depth [m] Pressure [MPa]

Pressure Temperature 100 200 300 400 500 600

Temperature [°C]

CPW

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IDDP Workshop 5

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Profiles of well A (large) and C (small)

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IDDP Workshop 5

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Well Head

• Master valve ANSI 2500

expanding wedge, 10”

• X-over ANSI 2500; 10”, 10”

& 3”, 3” for killing the well

• Gate valve ANSI 2500,

flexible wedge, 10”

• X-over ANSI 2500; 10”, 4” &

4” for production

• X-over ANSI 2500; 4”, 4”, 2”

& 2”

• Gate valve ANSI 2500; 4”

for logging

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IDDP Workshop 5

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IDDP Workshop 5

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IDDP Workshop 5

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Reykjanessvæðið

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IDDP Workshop 5

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