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27.10.2010
Shtokman Development AG
Developing Shtokman field – a unique international energy project
Didier Bertrane
Subsea Europe Paris
Deputy Offshore Project Director
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<Title>27.10.2010
Content
• Shtokman field overview • Key technical features• Subsea facility description
– Overall– SPS
• Project status / achievements
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Shtokman Development AG (SDag)
• Scope– Organize, design, finance, construct
and operate during 25 years the “SHTOKMAN Phase 1 development“
– Production plateau of 23.7GSM3/year, 7,5mtpa LNG - 5% gas for local market, the rest piped to the North Stream pipeline Project
– SDag and its Shareholders support the technical & economical risks of the Phase 1 development.
• A single integrated and dedicated Project team Gazprom + Total + StatoilHydro
• Synergy of Russian and European cutting-edge skills and technologies– Sharing of knowledge and resources optimization
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Shtokman field overview
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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SHTOKMAN Field• Gas & condensate field in the Russian
Barents Sea– Discovered in 1988– Super giant field: 3800GSm3
(135Tcf)– Water depth: 320-340m (1100ft),– Good gas quality and low GCF– Offshore at 550km (340mi) from
Kola peninsula– 7 discovery/appraisal wells
• Too large to be developed at once, – full field development in 3 phases
of 23,7GSm3/year (~2.4Bscf/d) each (400,000bepd)
– Phase 1: 7,5mtpa LNG & 11.2GSm3/y pipe gas
– Onshore plant near Teriberka, 120km (75mi) eastward of Murmansk
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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SHTOKMAN field development
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A phased but unique development… 2 large projects in 1 (OFF & ON)
Wells InfieldSS layout Floater Trunklines
Receivingfacilities
LNG plant Gas pipeplant
Storage &loading
Exportcompressor
Onshoretrunklineto Vyborg
LNGcarriers
technical scope
GAZPROM scope
PHASE 1
PHASE 2, 3…
General PurposeInfrastructures Cond.
Utilities
Camp
OFF
ON
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Harsh environment: arctic conditions• Harsh metocean conditions
– Extreme conditions equivalent to Northern North-Sea, associated to rapid evolution of phenomena
• Polar Lows
• Icing– From atmospheric and sea-spray
• Low temperatures– Extreme lowest -40°C
• Snow– Twice more than in Sakhalin
• Polar night (3month/year)– From Dec. to Feb.
• Darkness, fog…
• Metocean parameters were validated by extensive measurements
– 8 years of observations on site & 1 year along trunkline
Barents SeaShtokman
20 50
Surface Current 0.9 m/s
Max Temp = 9.0°C
Min Temp = -1.6°C
Waves
Hmax 23.3m
Hs 12.5 m
Seabed Current 0.4 m/s
Wind 31.0m/s
Water depth: 320-350m
Polar low, Barents Sea, 27 Feb. 87
Constant challenges to HSE
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Ice & Iceberg conditions at Shtokman
• Ice occurs once in 2.6 years.– when occurs, stays in average 3.3
weeks but could be up to 3 months
• First-year ice with – thickness average 0.85 m, max 2.0 m – rare inclusions of second year floes
(<50 m)– Ice ridges keel up to 21 m deep
(locally)
• Ice drift reversals occur
• Icebergs – Collision probability with
FPU about 0.2 in 50 years, if not managed
– in open water and embedded in Sea Ice
Ice concentration
Shtokman field is unique by the combination of harsh metocean conditions and presence of ice and icebergs
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Shtokman Phase 1 development: main challenges
• Technical challenges– Size of the project– Remote location: 550km (340mi) from mainland
• Open sea, no other nearby development– Arctic environment
• Ice & icebergs, etc.• Polar lows• Icing
– Environmentally sensitive ecosystem– Operating conditions
• Weather season limitations � autonomy• Complex logistics, EER response time• Winterization (Offshore & Onshore)
• Organizational & human challenges– Local content– Human factor.
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Size of project
• Floater to process 71.2MSm3/d of gas (2.5Bcf/d), incl. FG
– One of the biggest floater worldwide– Ice resistant & disconnectable– Topsides > 40,000t– Flare size– Turret size & number of risers– Emergency Evacuation & Rescue
• Dual dry 2-phase 36” trunklines:– unique compared to all other 2-phase and
MPF pipelines:– Distance + rough seabed topography +
diameter
• 7.5mtpa LNG plant– A mega LNG train in a very remote area– Utilities & support (600MW PGU, service
harbor, camp, etc.)
2x36”x560km
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Content
• Shtokman field overview • Key technical features• Subsea facility description
– Overall– SPS
• Project status / achievements
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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• Good quality gas– No significant H2S– No significant CO2– Very low liquid content– Moderate reservoir temperature
• Low condensed water content– Moderate reservoir pressure
• 210 bar WHSIP
• High deliverability wells– Potential in excess of 10 Mm3/d– Top of the range Xmas tree (7")– 16" OD flowlines with 14" ID risers
• 350 m water depth– Deepwater diverless technology– Flexible pipe only choice for risers–– Trawling activity Trawling activity template architecturetemplate architecture
Key technical features for the subsea development (1/2)
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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• Arctic environment– Need to accommodate FPU disconnection
• Flexible risers– Seasonal installation– Risk of severe weather conditions
• Large gas flow rate for export– Avoid "singing risers"– Redundancy
• Project size + expected 50 years operational life– Conventional solutions
• Hydrate prevention with permanent MEG injection• Looped flowlines
– Minimum qualification • Wet Gas Flow Meters
Key technical features for the subsea development (2/2)
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Content
• Shtokman field overview • Key technical features• Subsea facility description
– Overall– SPS
• Project status / achievements
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Subsea facilities
6 x 4 Slots Production Templates
6 x 14" ID Infield Flexible Risers
6 x 16" ND Flowlines
4 x 14" ID Export Flexible Risers
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Subsea architecture - schematic
18 I-tubes for Risers and umbilicalsI-tubes
4 x 14" ID Smooth boreExport Risers
6 x 14" ID Rough boreInfield Risers
3 drill centers -> limited rig moves achieved by skiddingDrilling
Flowlines: 16"ND can be laid as well in S-lay, J-Lay or reel layInstallation
Umbilical with derivation to control the IRB + 2nd template in daisy chain
Umbilical architecture
Subsea choking and subsea Wet Gas Flow Meter
Flow Control Module
Topside to topside via riser, flowline & pigging loop on template
Infield pigging
Single valve and connectors on simplified IRB
Risers connection to Flowlines
6 x 16" NDFlowlines
6 x 4-Slots templates(2 templates in series on 3 drill
centers)Template
Description
TRB
FP2 x 14"ID
2 x 16"ND
2 x 16"ND
2 x 16"ND
2 x 14"ID
2 x 14"ID
PA12PA14
PA13
PA11
PA02
PA01
PA03 A12 J0 wells2 J1 wells
1 J0 well1 J1 well +
1 back-up well
A2
PK14PK13
PK12PK11
PK04
PK02
2 J0 wells1 J1 back up well
K1
2 J1 wells + 1 back-up well
K2
PD11
PD13
PD02
PD01
PD04
PD14PD12D1
2 J0 wells1 J1 well
1 J0 well2 J1 wells +
1 back-up well
D2
4 x 14"ID
PLEM
PLEM
2 x 36" ND Trunklines
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Export system general arrangement
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Trunkline riser base and PLEM configuration with built-in redundancy
Foundations
Modules
16" remotely operated valve
16" ROV operated valve
36" ROV operated valve
4 x 16" spools
16" By pass2 Umbilicals
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Design: 2x36” trunklines to shore
• TWO phase flow design – optimized solution with two 36” trunklines– Nominal export rate per trunkline = 35 MSm3/d – full capacity per line = 38 MSm3/d – FPU discharge pressure about 150 bara, arrival pressure 60 bara
(packed up to 110 bara)– Onshore slug catcher capacity 2500 m3 (in two parts)
Осн.райз.
PLEMТрубопр.36”
К пробкоуловителю
PLEM Трубопр.36”
Осн.райз.Райзеры
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Subsea IMR and monitoring philosophy• Design life philosophy
– Category 1: 50 years service life (structural/static)– Category 2: 30 years service life with potential extension through Inspection
• Capability to retrieve (e.g. manifold)– Category 3 <30 years service life
• Modular design replaceable by Shtokman installation means (e.g. choke module/risers)
• Production parameters monitoring at drilling centres– Classical: P, T Hydrate inhibitor flow– Wet gas flow meters (with emphasis on formation water detection)– Sand production detection (acoustic + erosion & momentum sensor)– Acoustic leak detection (1 per template)
• Production line inspection– Looped configuration allowing surface to surface round trip internal pigging by intelligent pigs– External inspection (CP, visual inspection, geophysical survey, FLET)
• Trunkline inspection– Subsea pig launcher and receivers designed to accommodate intelligent pigs– External inspection
• Riser and riser system monitoring– Annuli venting and monitoring + polymer coupons monitoring– Visual inspection (including in the I tubes)– Midwater arch buoyancy
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Subsea Intervention and ROV Services• Typical ROV operations required will be:
– Assistance during ROT operations and subsea construction work – Operation of various ROV skids/tools (i.e. tie-in tools, torque tools)– Replacement of flying leads / cables / hoses. – Cleaning and high pressure water jetting – Replacement of subsea control
modules, choke modules and other replaceable equipment
– Visual inspections of subsea installations and pipelines
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Content• Shtokman field overview and brief history• Key technical features• Subsea facility description
– Overall– SPS
• Project status / achievements
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010
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Status (offshore part)• Main technical options selected for base case
– Offshore concept, sub-sea system, marine infrastructure configuration, onshore process…
– FEED (launched in Dec. 07) completed– Compensated call for tender for FPU completed– Qualification programmes completed for the subsea part
• Decision to de-couple LNG from Offshore scheme
• Moving towards two distinct final investment decision (FID)– One for offshore scheme– One for LNG plant
• Call for Tenders for Subsea, FPU, Trunkline in progress
27/10/2010 Subsea Europe Paris: Shtokman Development - October 2010