Tyrihans Subsea Raw Seawater I

1 -

Tyrihans SRSWI (Subsea Raw Seawater Injection)

Project Execution Experiences

UTC – 2010-09-22

Nils Petter Time – Principal Engineer

2 -SRSWI System

Tyrihans Field Overview

3 -

Tyrihans Reservoir & Purpose of SRSWI

Garn

ILE

Oil column

Ile

gas prospect

• Åsgard B gas injection capacity is limited to 8.5 mill. Sm3/sd

• Increased pressure support improves oil/condensate recovery in TYS

• Water injection stabilize oil zone in TYS and pushes gas breakthrough back

• Water injection in the saddle will equalizes pressure differences between TYS and TYN

• Estimated IOR of 10%

Reserves:

•68.9 MSm3 oil/ condensate

•55.4 GSm3 rich gas

4 -

Contract Strategy – SPS vs Pump System

Statoil - Tyrihans

SPS ContractorFMC - chosen Q1 2006

SRSWI ContractorAker Solutions - chosen Q2 2006

(SPS = Subsea Production System)

The SRSWI system is integrated into SPS template and controlled by the

Kristin Safety and Automation System (SAS) via the SPS Control System.

5 -

System Overview – Topside Equipment

6 -

System Overview – Subsea Equipment

7 -

SRSWI Pump Cassette

8 -

SRSWI Project Timeline

2006 SRSWI Contract award – Aker Solutions

2006 SPS Contract award – FMC Technologies

2007 Integration Test – Pump cassette vs Template

2008 System Function Test in pit at

Aker Solutions’ Tranby site

2008/2009 Integration- and

Shallow Water Test of Pump

Cassette with all Modules

2009 Marine Operations – Installation of

Pump Cassette and Power Umbilical

2008 Installation of topside

equipment on Kristin

2009/2010 Topside MC and

Commissioning of SRSWI System

2010/2011 Completion of well and injection start up

9 -

SRSWI Project - Interfaces

Pump Cassette

29UD801

Step down

transformer &

Step up

transformer

29ET820

FMC Technologies

Aker Solutions

NexansAker Solutions

Barrier

Fluid HPU

29UX801

31 km

To

psid

e (

C0

74

)

Su

bse

a (

C0

89

)

Seaw

ate

r in

take

El. m

oto

rB

ooste

r

Pu

mp

Min

. flow

orifice

Seaw

ate

r in

take

Ste

p d

ow

n

tra

nsfo

rme

r

29E

T8

21

Pum

p m

odule

29U

X821

Dya

mic

part

Tra

nsitio

n join

t

Sta

tic p

art

Topsid

e h

ang-o

ff

HV Wet Mate

Connectors

Split

box

Power Umbilical

PC-201

Template ’W’ - 18UZ9001

WI choke module

El. m

oto

rB

ooste

r

Pu

mp

Ste

p d

ow

n

tra

nsfo

rme

r

29E

T8

11

HV Wet Mate

Connectors

Kristin Topside

PC

-202 (

700 m

)P

C-2

03 (

700 m

)

VSD1

29ER810

Min

. flow

orifice

Step down

transformer &

Step up

transformer

29ET810

VSD Controller & RIO

29EC801

VSD2

29ER820

HTP

19UU801

Standard

Tyrihans

HXT

18UB9200

Slot W2

Spare slot for

additional well

Slot W1

SC

M

18

UN

93

00

(FM

C)

CM

M

29

UN

83

1

SRM A

18UN9001

SRM B

18UN9002

Pum

p m

odule

29U

X811

Manifold

18UD9001

Tyrihans SRSWI System

Supplier Interfaces

C089-ZAB-Z-XI-0001-01

NPT, 15.09.2009

Sheet 1 of 1 Rev. 02

18UC9200

11 -

Project Interfaces Statoil

FMC Technologies

Subsea Production

System

Aker Solutions

SRSWI

Aker Reinertsen

Topside Mod’s

Nexans

Power Umbilical

Acergy

Marine Operations

Kongsberg Maritime

SAS

Grenland Offshore

Structures

Grenland Offshore

Structures

Anzett

Barrier Fluid

HPU

Aker Solutions

Aberdeen

Condition

Monitoring

Module (CMM)

Vetco/ABB

Power System

12 -

Interfaces - Key responsibilites

• FMC was the lead interface party for entire subsea production system

• Aker Solutions had the system responsibility for the SRSWI pump system,

including condition monitoring and topside power system

• FMC had the system responsibility for the control system (KS 200e + SAS)

• The Aker Solutions SRSWI system is controlled by SAS from Kongsberg Maritime

(KM) via the FMC control system for the subsea functions

13 -

Interface Experiences - General

• Positive spirit, open minded atmosphere and good collaboration between

the interface parties

• Control system interfaces were especially challenging, but solved through

good cooperation

• Some challenges in interfaces vs topside project in early phase

• Statoil Team hands on in the interface work

14 -

EPC Contract – SRSWI Pump SystemExperiences

• Close and good

cooperation between

Statoil Team and Aker

Solutions

• Successful integration

test of Aker Solutions

pump cassette vs FMC

template and manifold

Integration Test: Pump cassette vs template

and manifold. Hub on pump cassette

provided by FMC

Pump

Cassette

FMC

manifold

15 -

EPC Contract – SRSWI Pump SystemExperiences

• Successful System Function Testing at Aker Solutions Tranby, with Aker

Solutions, FMC, KM and Statoil all ”pulling in the same direction”

• The pump system proved to deliver more than targeted rating

• Delayed motor delivery from vendor caused internal delays for Aker Solutions

• Life Cycle Information (LCI, i.e. documentation) deliveries significantly delayed

16 -

EPC Contract – SRSWI Pump SystemExperiences

• Good facilities in Horten for execution

of final integration test

(interchangeablilty of modules) and

shallow water test

• Good efforts put on by ABB and Aker

Solutions during ”last minute” changes

to subsea transformers to get them

ready for delivery and load out in time

Integration test in Horten

17 -

VSD-

room

HV-

room

Transfor

mers

Topside modifications and installation

”Tower of Power”

19 -

Installation of topside located equipmentExperiences

• SRSWI transformers, VSDs and Barrier Fluid HPU were delivered by Aker

Solutions, and provided as CPI to topside installation contractor Aker Reinertsen

• Demanding interface due to:

− Interface/LCI responsibilities of the parties not clarified good enough at

project start up

− Late interface information from subsea to topside

• Long time between installation and MC&C as the SRSWI system had low priority

20 -

Marine Operations

• Pump cassette, subsea transformers and

power umbilicals were installed by Scandi

Acergy

• Sequence:

1. Pump cassette into template W

2. Power Umbilical from Kristin to

junction box (JB) lay down point at W

location

3. Subsea transformers into template W

with split out umbilical ends laid down

at JB lay down point

4. Retrieval and splicing of main power

umbilical and split out umbilicals

Skandi Acergy

21 -

Marine Operations - Installation

22 -

Marine Operations – Umbilical Junction

1. Umbilicals hung

off in joint box

(JB) and

conductors

jointed by Nexans

crew

2. JB panels fitted.

Note plates

securing the JB

to the moonpool

doors. Temporary

bend stiffeners

were fitted below

3. JB lifted from

deck, pulling up

bend restrictors

4. JB laid down on

seabed

23 -

Marine OperationsExperiences

• Load out of Power Umbilical was time critical due to narrow margins for

Skandi Acergy getting through Svinesund

• ”Bird caging” caused repair work that delayed the load out of the Power

Umbilical

• Splicing of main power umbilical to the two split out umbilicals by fixing JB

to moonpool doors proved to be very efficient

• A stray buoyancy element stuck in the I-tube caused

delayed pull-in

24 -

MC and CommissioningExperiences

• MC of power system performed by topside project with assistance from Aker

Solutions

• MC of barrier fluid HPU performed by FMC

• Part-commissioning and testing of the pump system performed in July 2010 (min

flow mode) with assistance from Aker Solutions and Kongsberg Maritime

• Final commissioning planned Q1 2011, after injection well is completed.

25 -

Tyrihans SRSWI – Project Execution Experiences

Nils Petter Time

Principal Engineer

npt@statoil.com, tel: +47 950 39 204

www.statoil.com

Thank you