subsea processing technology to increas oil · pdf file25/04/2013 4th ghana summit 0 subsea...

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


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


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


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

4


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


Subsea Boosting• Main drivers:

– Low pressure reservoirs

– Declining reservoir pressure

– Increasing watercut

– Increase and accelerate production


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


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


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


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


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


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


14


Pazflor start up5th September 2011

≈ 100% uptime since then


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


• High Viscosity


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


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


• High Viscosity


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


Marlim SSAO – Installation, 7 Nov. 2011


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


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


FMC’s Vision

All Subsea

Thank You!

subsea processing technology to increas oil · pdf file25/04/2013 4th ghana summit 0 subsea...

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