Deepwater Field Development - Flow Assurance - Dynamic ...

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Black Oil System: Cold Restart • System pressure < hydrate formation conditions throughout restart? • For deepwater, hydrostatic pressure in riser too high • Separator pressure: may need alternate start-up vessel • Hydrate inhibition required until arrival temperature reaches “Safe Operating Temperature” (SOT) • Maintain hydrate inhibitor rate: Fluid completely inhibited • Reduce hydrate inhibitor rate: Fluid not completely inhibited to shut-in conditions • SOT is minimum topsides temperature that provides sufficient cooldown time, in the event of an interrupted restart
Black Oil System: Cold Restart 0.60 0.55 Methanol Dosage, BBL MeOH/BBL H2O 0.50 0.45 0.40 0.35 0.30 PURE WATER 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 Shut-in Pressure, psia SEA WATER PRODUCED WATER
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DP Conference MTS Symposium Flow As
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Flow Assurance Overview
Page 5 and 6:
Key Flow Assurance Issues •Wax (P
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Key Flow Assurance Issues Example W
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Key Flow Assurance Issues •Wax De
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Key Flow Assurance Issues •Hydrat
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Key Flow Assurance Issues •Hydrat
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Key Flow Assurance Issues •Sluggi
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Key Flow Assurance Issues •Other
Page 19 and 20: Deepwater: Temperature Losses • P
Page 21 and 22: Deepwater: Temperature Losses Flowl
Page 23 and 24: Transient Temperature Loss 110 100
Page 25 and 26: Deepwater: Pressure Losses Flowline
Page 27 and 28: Dry Tree: Conduction / Convection /
Page 29 and 30: Dry Tree: Concentric vs. Non-Concen
Page 31 and 32: Design for Expansion • Transient
Page 33 and 34: Emerging Technologies • Artificia
Page 35 and 36: Design Considerations: Black Oil an
Page 37 and 38: Black Oil System: Transient Design
Page 39 and 40: Black Oil System: Steady State Hydr
Page 41 and 42: Black Oil System: Slugging • Slug
Page 43 and 44: Black Oil System: Steady State Ther
Page 45 and 46: Black Oil System: Steady State Ther
Page 47 and 48: Black Oil Systems: Cooldown Design
Page 49 and 50: Black Oil System: Cooldown • Plan
Page 51 and 52: Black Oil System: Cooldown • Insu
Page 53 and 54: Black Oil System: Cooldown 6000 550
Page 55 and 56: Black Oil System: Cooldown 60 WELLH
Page 57 and 58: Black Oil Systems: Depressurization
Page 59 and 60: Depressurization:Subsea Tieback 450
Page 61 and 62: Black Oil System: Depressurization
Page 63 and 64: • During “Prevention” time, d
Page 65 and 66: Black Oil System: Displacement Hydr
Page 67 and 68: Black Oil System: Displacement Hydr
Page 69: Black Oil Systems: Restart Design C
Page 73 and 74: Black Oil System: Cold Restart •
Page 75 and 76: Black Oil System: Cold Restart
Page 77 and 78: Cold Restart: Case Study 15 Mile Ti
Page 79 and 80: • Is there sufficient hydrate inh
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Deepwater Field Development - Flow Assurance - Dynamic ...

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