Deepwater Field Development - Flow Assurance - Dynamic ...

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Black Oil System: Depressurization • Hydrate remediation strategy • Reduce pressure below hydrate formation pressure at seabed • Effectiveness based on: • Fluid properties • GOR • Water cut • Seabed bathymetry • Upslope • Downslope • <strong>Deepwater</strong> issues 10000 9000 8000 7000 6000 5000 4000 3000 Phyd ~ 200 psia Pure Water 2000 Sea Water 1000 Produced Water 0 40 45 50 55 60 65 70 75 80 85 Temperature, °F • Reduce pressure to ~200 psia at seabed Time=0 • Maintain pressure below hydrate conditions during restart Time=4 Time=8 Pressure, psia “No-Touch” “Light Touch” “Preservation”: Depressurization
Depressurization:Subsea Tieback 4500 4000 BOTTOM HOLE 3500 3000 2500 FLOWLINE 0.0 hours 0.5 hours 1.0 hours Pressure (psia) 2000 1500 1000 MUDLINE 500 RISER BASE 0 0 1 2 3 4 5 6 7 8 9 Distance (miles)
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DP Conference MTS Symposium Flow As
Page 3 and 4:
Flow Assurance Overview
Page 5 and 6:
Key Flow Assurance Issues •Wax (P
Page 7 and 8: Key Flow Assurance Issues Example W
Page 9 and 10: Key Flow Assurance Issues •Wax De
Page 11 and 12: Key Flow Assurance Issues •Hydrat
Page 13 and 14: Key Flow Assurance Issues •Hydrat
Page 15 and 16: Key Flow Assurance Issues •Sluggi
Page 17 and 18: 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: Black Oil Systems: Depressurization
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 and 70: Black Oil Systems: Restart Design C
Page 71 and 72: Black Oil System: Cold Restart 0.60
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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