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25/04/2013 4th Ghana Summit 0
SUBSEA PROCESSING TECHNOLOGY TO INCREAS OIL RECOVERY
Ove JahnsenFMC Technologies
125/04/2013 4th Ghana Summit
Content
1. Introduction2. Value drivers3. System descriptions4. Maturity 5. Projects
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Using Subsea Processing toEnable New Development and Increase Oil Recovery
Greenfield challenges:• Heavy oil • Low reservoir pressure• Hydrate formation
Brownfield challenges: • Declining oil & gas production • Increasing water production• Constrained topside facilities
Opportunityto Enable New Development
Opportunityto Increase
Oil Recovery
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Subsea Processing Value Drivers
• Accelerates production
• Increases recovery
• Lowers infrastructure costs
• Enabler for challenging fields
- Long distance tie-backs- Low pressure reservoirs - Flow assurance mitigation- High water production - De-bottle necking of topside
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Subsea Processing Technology Areas
PowerKey Enabling Technology Areas
Controls
Compression Station
Boosting Station
Separation Station
Power
Process Controls & Automation
Advanced Subsea Infrastructure
Key Core Technology AreasBoosting
Separation
Compression
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Effect of separation and boosting to production
With subsea water separation
Boosting dp requirement with water separation
Boosting dp requirement
Limit of natural productionwith subsea water separationLimit of
natural production
Boosted production
WHP
Flowing back-pressure
Minimum separator operating pressure
Flow
Pre
ssu
re
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Subsea Boosting• Main drivers:
– Low pressure reservoirs
– Declining reservoir pressure
– Increasing watercut
– Increase and accelerate production
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L/L Separation And Water Reinjection• Main drivers:
– De-bottelnecking of topside system
– Increasing watercut
– Declining reservoir pressure• Reduce backpressure• Water injection
– Add tie-backs to existing infrastucture
– Remove sand from flowlines and risers
TORDIS
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G/L Separation And Liquid Boosting• Main Drivers:
– Low pressure reservoirs
– Decreasing reservoir pressure
– Heavy Oil
– Depressurization necessary due to hydrate formation
– Stabilize production, i.e damp slug flow
– Reduce power consumption by single phase boosting
8
PAZFLOR
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Gas Compression• Main Drivers:
– Decreasing reservoir pressure
– Maintain gas velocity to avoid liquid accumulation in flowlines– Reduce need for water injection or pressure support
– Avoid surface installations:
• ”Subsea to beach”
• Long step-outs possible
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Subsea Processing Major Projects
GreenfieldGreenfield BrownfieldBrownfield
Troll Pilot• Brownfield• Gas/Oil/Water/Sand Separation• Water Injection• Installed 2001
Åsgard• Brownfield• Gas Compression• To be installed 2015
Marimba VASPS• Brownfield• Gas/Liquid Separation• Boosting to topside• Installed 2001
Tordis• Brownfield• Gas/Oil/Water/Sand Separation• Boosting/Water Injection• Installed 2007
Pazflor• Greenfield• Gas/Liquid Separation• Boosting to topside• Installed 2011
BC-10 Ph 1 & 2• Greenfield• Gas/Liquid Separation• Boosting to topside• Installed 2009
Perdido• Greenfield• Gas/Liquid Separation• Boosting to topside• Installed 2010
Marlim• Brownfield• Gas/Oil/Water/Sand Separation• Water Injection• Installed 2012
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Project Overview
Water Depth: 220 meter
Step Out: 12 km
Process Capacity: 200 000 bbl/dayMultiPhase Pump: Helico-Axial 1.8 MW Δp 30 bar Water Injection Pump : Single Phase 2.3 MW Δp 100 bar
OiW 1000 ppmSand Removal System: Max 500 kg/day
Increased Recovery from 49% to 55%
Example 1 - Statoil Tordis3 phase separation + WI & Boosting
FIRST FIRST SEMISEMI--COMPACT COMPACT SEPARATOR SEPARATOR WITH SAND MANAGMENTWITH SAND MANAGMENT
SSBI Station:Height: 19 mLength: 48 m Depth: 28 mWeight: 1200 tons
Challenges solved:• Increasing water production
• Declining pressure in wells
• Limited topside water handling
capacity
• Sand production
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Project Overview
Water Depth: 800 - 900 meterStep Out: 14 KmProcess Capacity : 110,000 bopd and 1.0 MMSm3/dGas Tolerant Pump: Hybrid to 15% GVF
2 X 2.3 MW max Δp 180 bar
Free flow not possible
Example 2- Total PazflorG/L Separation + Boosting
FIRST FIRST WEST AFRICAN GASWEST AFRICAN GAS--LIQUID LIQUID GRAVITY SEPARATION SYSTEMGRAVITY SEPARATION SYSTEM
Challenges solved:• High viscosity and stable emulsion
• Large pressure drop in flowlines
and risers
• High water production from year 4
• Large amounts of methanol needed
for hydrate prevention
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Pazflor start up5th September 2011
≈ 100% uptime since then
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Example 3 - Petrobras Marlim3 phase separation + WI
FIRST FIRST BRAZILIAN BRAZILIAN FULL FIELD FULL FIELD SEPARATION & INJECTION SYSTEMSEPARATION & INJECTION SYSTEM
Increased production and water removal
Challenges solved:• Increasing water production
• High Viscosity
• Limited topside water handling
capacity
• Sand production
Project Overview
Water Depth: 900 meterStep Out: 5 KmProcess Capacity : 22,000 bpd, 67% W-cut Water Injection Pump: 1.9 MW/Δp 180 bar
OiW 100 PPM
Compact Separators for de-oiling and de-sanding
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Example 3 - Petrobras Marlim3 phase separation + WI
FIRST FIRST BRAZILIAN BRAZILIAN FULL FIELD FULL FIELD SEPARATION & INJECTION SYSTEMSEPARATION & INJECTION SYSTEM
Increased production and water removal
Challenges solved:• Increasing water production
• High Viscosity
• Limited topside water handling
capacity
• Sand production
17
Project Overview
Water Depth: 900 meterStep Out: 5 KmProcess Capacity : 22,000 bpd, 67% W-cut Water Injection Pump: 1.9 MW/Δp 180 bar
OiW 100 PPM
Compact Separators for de-oiling and de-sanding
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Marlim SSAO – Installation, 7 Nov. 2011
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Future Separation Solutions
……to to slimmerslimmer and more and more compactcompact solutionssolutions
…to …to inlineinline, , ultraultra--compactcompact solutionssolutions
MovingMoving from bulk from bulk gravitygravity separationseparationTordis
Marlim
2025/04/2013 4th Ghana Summit
Future Separation Solutions
……to to slimmerslimmer and more and more compactcompact solutionssolutions
…to …to inlineinline, , ultraultra--compactcompact solutionssolutions
MovingMoving from bulk from bulk gravitygravity separationseparationTordisTordis
Marlim
2125/04/2013 4th Ghana Summit
FMC’s Vision
All Subsea
Thank You!
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