GE Oil & GGE Oil & Gas -VetcoGrayThe Realisation of the VetcoGray

Snøhvit Subsea Production C t l S tControl System

Stuart HolleyProduct Line Manager – ElectronicProduct Line Manager Electronic Subsystems04 June 200804 June 2008

Agenda• The Snøhvit Subsea Control SystemSystem

• The Challenges

• Technical Solution

P j t E ti• Project Execution

• System CommissioningSystem Commissioning

• Key Lessons

2 /GE /

June 6, 2008

Snøhvit FieldSnøhvit

3 /GE /

June 6, 2008

Courtesy of Statoil

Snøhvit Challenges• Long Offset Tie Back to Beach (144km)

Hi h D t R t D d• High Data Rate Demands

Highly Instrumented TreeHighly Instrumented Tree

Wet Gas Flow Meter

• High Availability / Redundancy

E i t l C id ti• Environmental Considerations

4 /GE /

June 6, 2008

Snøhvit Control System Overview

DEF

Snøhvit

3.3 km3.2km8.3 km3kV 3-Phase Power

& Fibre OpticsSingle Phase 600VHigh Speed Comms

CDU1 144 km

Hammerfestg p

on Power

11.7 km34 km

J

2 3 km

N

CDU2K

5.8 km

14.8 km

2.3 km

3kV 3-Phase Power

AlbatrossL

3kV 3 Phase Power& Fibre Optics

5 /GE /

June 6, 2008

Askeladd

Enabling Technologies

LLong-range Optical Comms

S b DSubsea Data Routing &

Multiplexing3KV Power

Long Range COPSBUICS

High Speed COPS

6 /GE /

June 6, 2008

COPS

Key Facts• Design Offset 220km

• Phase 1 equipment design

• Fibre Optic Comms to Central Distribution UnitsPhase 1 equipment design

for 25 SCM minimum

Redundant electrical optical

• High Speed Comms on Power to Manifold/SCM• Redundant electrical, optical

& hydraulic distribution

to Manifold/SCM

• Back Up Comms on Power to th CDU• 3-Phase 3kV to Central

Distribution Units

the CDUs

• 345 bar LP distribution with HP

• Single phase 600V distribution to Manifold/SCM

Intensifier in SCM

• Back Up Intervention Control

• Design Temperature (onshore): -230C

System - BUICS

7 /GE /

June 6, 2008

(onshore): 23 C

Dual - Duplex Redundancy

OpticalSMU

Shore Base

OPC

Subsea CDU/PCDM A

Optical

COPModem 1

220 km

Channel AMedium speed electrical

Modem 1

OpticalModem 2

Server

ch AC

omm

sR

oute

r Modem 1

OpticalModem 2

Com

ms

Rou

ter

COPModem 2

COPModem 3

Dual Fibre optic Comms, HDLC - 10 Mbits/sec

1530nm

1560nm LSCMLSCM

communication links to manifolds/trees, channel A

CEM1560nm

Backup communicationTC 57 1 2 kbit/

LSCMSC

BUICS

channel A

CEMSMU

TC 57 - 1.2 kbit/sec

LSCM

BUICS

M di dOptical

Modem 1

Optical Com

ms

Rou

ter

COPModem 2

Dual Fibre optic Comms, HDLC - 10 Mbits/sec

COPModem 1

OpticalModem 1

Optical

OPC

Server

Com

ms

Rou

ter

LSCMLSCM Medium speed

electrical communication links toOptical

Modem 2

C R

COPModem 3

OpticalModem 2

Shore Base220 km

CDU/PCDM B

Channel Bch B

C R links to manifolds/trees, channel B

8 /GE /

June 6, 2008

Key:

Optical comms Electrical comms Sattelite link

Subsea Communication RoutingBUICS Umbilical

Optic CommsOptic Comms

Virtual Channels

Transparent Channels

Protocol independentFibre Optic Comms

Main Umbilical

• TCP/IP

• TC57

p1Fibre Optic Comms 2

Back up low speed

CommsRouter

• Modbus

• Etc.

Back-up low speed COPS

3000V

Local controlprocessor

9 /GE /

June 6, 2008

PCDM - Power & Comms Distribution Module

Optical Connector

1kV Electrical Connectors

Functionality

• Central power and Connector• Central power and communications distribution node

• Located 145km offshore from Melkøya

• Two Redundant PCDMs deployed on the CDU structure

• Future field developments supported by additional PCDMs pp ylocated on a second CDU

10 /GE /

June 6, 2008

3kV Electrical Connector

PCDM – Internal ModuleCommunications Module

10kVA Transformer

PPower Monitor, Protection &Protection & Switching ModuleBack UpBack Up

Comms Module

11 /GE /

June 6, 2008

PCDM Functionality• Step down main umbilical voltage to infield umbilical

voltage g

• Interface optical communications to the high speed electrical communicationselectrical communications

• Interface to back up communications

• Provides Line Isolation Monitoring for the infield umbilicals

• Provides hardware over-current protection

• Provides phase current and voltage monitoring

• Provides the power and communications for subseaProvides the power and communications for subsea pipeline corrosion spools

Reads PLEM P& T Sensors12 /

GE / June 6, 2008

• Reads PLEM P& T Sensors

CDU (Central Distribution Unit)

CDU Protection StructureRemote Component CDU Protection StructurepReplacement Tool

CDU Manifold

PCDMA/B

SCM

13 /GE /

June 6, 2008

Xmas Tree & CBM InstrumentationXmas Tree Instrumentation

• High Accuracy Profibus Press & Temp Sensors• Standard Accuracy Analogue Annulus Pressure Sensors• Hydrocarbon Leak Detector• Down Hole Pressure & Temperature Interface• Down Hole Pressure & Temperature InterfaceChoke Bridge Module Instrumentation• High Accuracy Profibus Press & Temp Sensorsg y p• Intrusive Sand Detector• Acoustic Sand Detector• Wet Gas Flowmeter• ROV recoverable Scale Inhibitor Metering Valve• MEG Flowmeter• MEG Flowmeter

Flowline Corrosion Monitoring Devices

14 /GE /

June 6, 2008

g

Umbilical System

Max Water Depth Main Umbilical: 440mLength 144.3km

M W D h I fi ld U bili l 340Max Water Depth Infield Umbilical: 340mD 3.6kmE 4.5kmF 9 8kF 9.8kmN 10.8km

15 /GE /

June 6, 2008

BUICSBack Up Intervention Control System

• Deck mounted, Zone 2 controls container

Subsea Communication Unit

Electrical Power Unit

Satellite Comms system between BUICS and LNG plant

• HPU

• Dynamic Umbilical with stab and hinge-over UTA and EQDPy g Q

• Umbilical Reel with EQDP

• Control via main umbilical or BUICS is transparent to LNG plant• Control via main umbilical or BUICS is transparent to LNG plant operators

16 /GE /

June 6, 2008

BUICS – Topside

Dual Optical Dual

3KVDual

M lkSpooler

pComms 3KV LP

ReelerMelkøy

a

HPUEQDP& BuoyReeler

Controls

UPS

PCUSAT

EPCUSSCU

Controls

EPCUSSCU

Bend Vessel

Controls

Stiffener

Umbilical

17 /GE /

June 6, 2008

BUICS - Subsea

HPU

V l

Reeler

ControlsMelkøy

aVessel

BUICSBUICSUmbilicalBuoyancy

Arch

CDU

SUTAMain Umbilical

18 /GE /

June 6, 2008

Project ExecutionEPC Project VetcoGray Norway

Trees VetcoGray AberdeenTrees VetcoGray Aberdeen

Umbilical VetcoGray Oslo – Nexans

Structures VetcoGray Oslo – Nymo

Controls VetcoGray Nailsea Bristol UKControls VetcoGray Nailsea Bristol UK

Production Control System (PCS)

Back Up Intervention Control System (BUICS)

Work Over Control System (WOCS)Work Over Control System (WOCS)

19 /GE /

June 6, 2008

Project Timeline

Router Devt

2002 2003 2004 2005 2006 2007 2008

Router Devt.Contract Award EngineeringManufactureCDU & Manifold InstallationC t l t t tControls system testDelivery of Topside ControlsWorkover System deliveryWorkover System deliveryInstall Trees & Subsea ControlsCommissioningBUICS deliveryFirst Gas

20 /GE /

June 6, 2008

Control EFAT (Nailsea UK)Extensive Integration Test

Fully Tested Comms & System Capabilities

Tree

PCDMS

EPU

SCU

EFAT Started Oct 2004

Completed Jan 2005

Issues

Learning Curve

Accuracy of Umbilical Simulation

Integration of PLC SCU

21 /GE /

June 6, 2008

System Commissioning (Melkøya)• Installation Began Sept 2005• Communications Established with CDU and InField Umbilical's

November 2005 (Optical & Back Up)• HV Connector Failure - February 2006 / May 2006• HV Connector Change - Out - August 2006• Remote Access Link Established Between Nailsea & Melkøya –

September 2006• 2nd HV Connector Failure – September 2006• 2nd HV Connector Change Out - April 2007• Pipeline De Watering – May 2007• First Gas – August 2007• Operational Commissioning complete May 08

22 /GE /

June 6, 2008

Challenges• Long Term Development

• On-Project Retention Of Key Personnel

• New Technological Developments

• Integration Of ICSS with Subsea System• Integration Of ICSS with Subsea System

• Realistic Umbilical SimulationRealistic Umbilical Simulation

• Remote Location

23 /GE /

June 6, 2008

Lessons Learnt• Importance of key personnel

• EFAT Experiencep

Involving the Commission Team at EFAT

• Close Teamwork with StatoilHydro• Close Teamwork with StatoilHydro

• Benefits of Remote Access

R d d N d f M bili tiReduced Need for Mobilisation

Maximise use of Available Resources

(‘virtual’ experts available at Melkøya site)

Facilitates the GE VetcoGray ‘i-Centre’ approach to

Remote Condition Monitoring & Diagnostics

24 /GE /

June 6, 2008

Arctic Challenges• Ice interactions with structures and seabed

• Weather windows – Installation and intervention

• Waste management – Discharges

• Low temperature design• Low temperature design

• Flow assuranceFlow assurance

• Longer tie-backs

25 /GE /

June 6, 2008

Achievements• Record breaking umbilical distance 144km (220km

design)

• Longest optic fibre control system communicationsg p y

• Communications bandwidth 10Mb/secCommunications bandwidth 10Mb/sec

• 1st use of comms on 3kv power• 1st use of comms on 3kv power

Ad d A t t d BUICS t• Advanced Automated BUICS system

26 /GE /

June 6, 2008

Thanks For Listening!

27 /GE /

June 6, 2008