subsea uk lunch and learn lunch and learn pres.pdf · •design code pd 8010 •2 x umbilicals...
TRANSCRIPT
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SUBSEA UK LUNCH AND LEARN 25TH SEPTEMBER 2012
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CONTENT
1. Who is Nexen
2. Buzzard
3. Scott/Telford
4. Ettrick/Blackbird
5. Ongoing Developments
6. Rochelle
7. Scott Oil Export Replacement Project
8. Golden Eagle
2
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WHO IS NEXEN?
•Canadian-based global energy
company (stock symbol: NXY)
• Producing Assets:
•UK North Sea, Canada, Gulf of Mexico,
Yemen, Colombia & West Africa
• 2nd largest oil operator in the UK
• 1,200 employees in UK
• In Aberdeen, Uxbridge & Offshore
•Due to move to new purpose built
offices in Kingswells end 2013
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UK NORTH SEA – PRODUCING ASSETS & FUTURE GROWTH
Discovery/Appraising
Producing/In Development
Prospect
Nexen Acreage
Producing Fields (Gross):
•Buzzard 200-220K boe/d
•Scott/Telford 30-45K boe/d
•Ettrick/Blackbird 15-30K
boe/d
Growth Opportunities:
Bugle, Golden Eagle Area,
Rochelle & others
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5
NEXEN ASSETS - UKCS
Buzzard Scott / Telford
Ettrick / Blackbird
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BUZZARD FIELD
• Largest field discovered in the North Sea in the past 25 years
• Nexen has increased reserves by ~50% since acquisition
• Reserves >700 million barrels gross
• Current production rate ~220K boe/d gross (95K boe/d net)
• Expect to maintain plateau production to 2014
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7
BUZZARD FIELD OVERVIEW
Buzzard On-Stream 2007
• 1x18” Oil Export into Forties
Pipeline
• 1x10” Gas Export line into
Frigg Gas Line
• 2 x 16” Water Injection
pipelines
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• Additional platform with
expanded H2S facilities
• Project sanctioned early 2008
• In service Q4, 2010
• Capital cost of facilities
~ $800-$930 million
• Designed to handle H2S up to
500 ppm wt
• Major tie-ins & jacket installed
Q3, 2009
• Topsides installation 2010
• On time and on budget
BUZZARD ENHANCEMENT PROJECT (BEP)
– ADD PRODUCTION SWEETENING PLATFORM
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SCOTT/TELFORD FIELD
• Current combined production rates:
•30-45K boe/d (gross)
•Reserves at ~50 million barrels
• Further extension was completed in
2012 with the addition of ETPRM tree
G20 and new 10” production pipeline
to Central Telford PL2675
• Several Nexen & Third Party
discoveries in the area under
evaluation as subsea tie-backs to the
Scott platform
Scott Telford
Rochelle
Perth Bugle
Blackhorse
Kildare
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10
SCOTT / TELFORD FIELDS
OVERVIEW
Scott On-stream 1993
• 24” Oil Export to BP Unity
• 10” Gas export to SAGE Tee
• 7 Subsea Production Lines
• 6 Subsea Water Injection Lines
Telford On-stream 1996
• 2 Subsea Production Lines
• 1 Gas Lift line
• 1 Methanol Line
• 1 Water Injection Line
• East Telford added 2000 through CTM
East Telford on-stream 2002
• 1 production pipeline
• 1 gas lift line
East Telford PRM On-stream 2012
• 10” production line
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ETTRICK/BLACKBIRD FIELD
• On stream August 2009
• Field developed via a leased FPSO –
Aoka Mizu
• Design capacity of 30,000 bbls/day
• Blackbird brought on stream Nov 2011
Ettrick
Polecat
Blackbird
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12
ETTRICK FIELD OVERVIEW
Ettrick On-Stream 2009
• Export oil to shuttle tanker
- 2x8” flexibles
• Gas Export to SAGE
pipeline – 1x6” flexible
• Gas Lift – 1x4” flexible
• Water Injection -1x10”
flexible
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13
BLACKBIRD TIE-BACK TO ETTRICK
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14
ONGOING DEVELOPMENTS
• ROCHELLE – Q4 2012
• SCOTT OIL EXPORT REPLACEMENT – Q3 2013
• GOLDEN EAGLE (GEAD) – Q4 2014
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ROCHELLE FIELD DEVELOPMENT
• 10” Pipe in Pipe East Rochelle to Scott SSIV and 14” Carrier Pipe
• 30km long
• API 5L X65 CS
• Design Pressure 245barg
• Design Temp -40 to 85 Degrees C
• Trenched and Buried
• 7” Scott SSIV to Scott Topsides
• 0.7km long
• 316L SS Carcass Flexible
• Design Pressure 245 barg
• Design Temp -20 to 85 Degrees C
• Water depth 134m – 146m
• Design code PD 8010
• 2 x Umbilicals trenched and Buried
15
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16
10” Pipe-in-Pipe
Scott Scope
Rochelle Scope
Rochelle Field layout
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17
ROCHELLE PROJECT OVERVIEW (TOPSIDES)
Separation
Multi-System
Multi-Work
Area
Subsea
Controls
Reception
Facilities
Umbilical
Pull-In
Methanol
Injection &
Storage
Chemical
Injection
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• Project Management, Design Engineering, Procurement, Fabrication, Installation &
Commissioning of the following:-
• Approx 30Km of PIP consisting of 14” OD x 16mm WT HFI pipe c/w 3LPP & 10” OD x 20.6mm
WT Seamless bare pipe. Laid by the Apache II in 4 trips
• C2 Riser cut & installation of new riser section c/w connecting clamp & supports.
• Installed upfront of main project offshore phase by DSV.
• J2 ‘J’-Tube pigging and messenger wire installation.
• I-tube pull & lay of approx 30.75Km of COMPANY supplied Umbilical supplied in one length
installed by the Construction Vessel (TBC) in 1 trip.
• SSIV structure & CS pipework at Scott Platform end. Installed by DSV.
• 1No 10” OD CS Tie-In Spoolpiece at SSIV. Installed by DSV.
• 7” Production Flexible installation between SSIV and Scott Platform. Installed by DSV.
• Manifold Structure c/w Duplex Pipework located adjacent to Rochelle Well. Installed by DSV.
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ROCHELLE SCOPE OF WORK
2No 10” OD Duplex Tie-In Spoolpieces from pipeline to manifold. Installed by DSV.
2No 6” OD Duplex Tie-In Spoolpieces from manifold to Rochelle well.
Pre-Cut Trenching for Umbilical.
Post-Cut Trenching for PIP then Backfill for PIP & Umbilical
4No. Crossing arrangement for the PIP & Umbilical over existing pipelines and umbilicals
utilising concrete mattresses and rockdumping. Mattresses installed by Survey/Utility
Vessel & DSV.
Mattress installation over tie-in spoolpieces. Installed by Survey/Utility Vessel & DSV.
Rockdumping over flexible riser and riser umbilical section.
J2 ‘J’-Tube preparation works. Performed by DSV.
All post-lay, pre-lay and as found survey support for pipelay, umbilical lay, flexible lay,
crossing installation, structure & spoolpiece installation and mattressing. Performed by
Survey/Utility Vessel.
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20
Subsea – Riser & Umbilical J-Tube Scope
C2 Riser
Converted to
Umbilical J-
Tube
J2 J-Tube - New
Bellmouth
Assembly
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21
Rochelle Subsea - Umbilical J-Tube Scope
Installation of new subsea turn tube & Bellmouth Assembly for umbilical;
Existing C2
Riser
C2 Riser cut
New turn tube
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22
Rochelle Subsea - Umbilical J-Tube Scope
New Subsea turn tube & Bellmouth Assembly for Umbilical;
Split
Temporary
Bellmouth
Primary Seal
Assembly
Sampling &
Flushing
Assembly
Secondary
Seals
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24
Golden Eagle Area Development
Field Location
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14 DISCOVERY & APPRAISAL WELLS SINCE 2006
20/1-8, 8z, 8y, 8x
Jan-May 2009
20/1-6, 6z
Dec 2006-Feb 2007
20/1-7, 7z
Jun-Jul 2008
20/1-10, 10z, 10y
Jun-Aug 2009
20/1-9
May 2009
20/1-11, 11z
Sep-Dec 2009
• The Golden Eagle
(Burns) discovery
was made by well
20/1-6 in December
2006
• approximately 113
m water depth
• 70 km offshore
Scotland, 19 km
north of the Buzzard
field, 21 km
northwest of the
Ettrick field
• recoverable
reserves: 98-138-185
mmboe
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GOLDEN EAGLE
Maximum
Rate
Plant
Capacity
Oil Production kstbpd 65 70
Produced Water Kbwpd 84 90
Water injection kbwpd 110 130
Total Gas MMscfd 39 42
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28
GOLDEN EAGLE (GEAD)
Gas Export Pipeline
to SAGE via Ettrick PLEM
PUQ
Platform
Approx 18 km
Southern Drill Centre Manifold
approx. 4.5 km tie-back
2 wells initially: 1 production 1 Water
Injection
BI-KBU BP-HBX
Jack-up Drilling
Oil Export Pipeline
To Claymore Skid
Approx 70 km
Wellhead
Platform
14” X65 seamless
6” X65 seamless
6” duplex
4” X65 seamless
6” 625 mechanically lined Cladtek
•All lines/umbilical's
trenched and backfilled
or protected
•6 x Pipeline or umbilical
crossings
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GOLDEN EAGLE AREA DEVELOPMENT
EPIC LINEPIPE ACTIVITIES
Pipeline
Length
(km) Fabrication
Procurement
Start
Delivery Coated to
Evanton
Current Status 1st
Feb 2012
14" Oil Export 69 Tenaris, Dalmine Italy 15-Dec-11 31-Aug-13
Steel Making to
commence 3rd Feb
2012 as per current
Tenaris schedule
6" Gas Export 18 Tenaris, Siderca , Argentina Italy 15-Dec-11 15-Oct-12
Steel Making to
commence 3rd Feb
2012 as per current
Tenaris schedule
6" Production 4.7 Saltzgitter , France 27-Jan-12 16-Jul-12
L.O.I. placed, date
for Audit/PPM
T.B.A. early March
10" Production
Carrier 4.7
TATA Steel (Port Talbot (Steel
Making) Hartlepool (Rolling) 27-Jan-12 15-Oct-12
L.O.I. to be placed
week 6, date for
Audit/PPM T.B.A.
4" Gas Lift 4.7 Tenaris, Siderca , Argentina Italy 15-Dec-11 15-Oct-12
Steel Making to
commence 3rd Feb
2012 as per current
Tenaris schedule
6" Water
Injection 4.7
Cladtek, Batam, Indonesia
(Tenaris Siderca supplied Carbon
Steel outer pipe) 27-Jan-12 15-Oct-12
L.O.I. placed, date
for PPM T.B.A. end
March/early April
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PUQ & W JACKETS
•Current Gross Dry Weight 5,981Te
•Topsides Maximum Operating Load 15,000Te
PUQ W
•Current Gross Dry Weight 6,237Te
•Topsides Maximum Operating Load 8,000Te
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GOLDEN EAGLE TOPSIDES LAYOUT
UTILITIES OIL
MER
ESS
SWGR
FWP
GAS
COMP
MAIN GEN
&
SRP
STORES
MUSTER
LIVING
QUARTERS
SWITCHGEAR/HVAC
F
L
A
R
E BRIDGE
UTILITIES WELLBAY
PUQ Wellhead
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TECHNIP EVANTON SPOOLBASE 14” OIL EXPORT
PIPELINE
33
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14” GOLDEN EAGLE OIL EXPORT PIPELINE
34
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14” GOLDEN EAGLE OIL EXPORT PIPELINE
35
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36
SCOTT OIL EXPORT REPLACEMENT
PROJECT SUMMARY
Why?
IP runs in 2007 & 2009 show
corrosion in 1st 7km. Life to
2013 with MAOP reduced to
100barg
What?
Replace 7km of 78km x 24”
line from Scott platform, “like
for like”
When?
Pipelay 2012
Tie-in 2013
Who?
Lay - Saipem
Tie-in - Subsea7
CoV - Apache, Premier, Maersk, Dana
Unity/FPS – BP & AMEC
How?
S-lay pipe. Suction anchor
Diver tie-ins with mechanical connector
De-oil, dewater
Big Risks
Scott prod outage, expectation & escalation
De-watering budget escalation
Shutdown date uncertainty
BP/AMEC interface, Unity working
Pipeline cut and connect
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SOER PROJECT STATUS SUMMARY / UPDATE
37
Scott Export Pipeline Details
Route Scott to BP Unity
Diameter 24”
Length 78km
Commissioned 1993
Design Life 20yrs to 2013
Design MAOP 162bar
Design flow rate 200,000bbl/day
Project Status Update:
• IP pig run of existing line completed (results under interpretation)
• New line installation and testing completed
• Project is maintaining target cut and tie in of new pipeline during 2013