Shtokman Development AG

OffshoreFloating Production Unit (FPU): Valves

Technical meeting with Russian valve manufacturers

Moscow 24th June 2010

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Summary

Offshore Project Description

FPU presentation

Valves main characteristics

General design requirements

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650 km650 km

Shtokman Field – Mourmansk : 650 kM

280 km280 km

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• 340 water depth reservoir 2 000 m below mud line• Reserves estimated to 3 700 GSm3• Covers an area of 1 400 km2• 2 subsea templates per drill center• 3 Drill centers - 20 wells• 16” flow-lines & 14” flexible risers• Floating Platform:

– Ice resistant & disconnectable floater– Design capacity: 71.2 MSM3/d– Winterization

• Subsea trunkline to shore 2 x 36” x 550 km Dry 2 phase transport

• Drilling rigs• Logistics (vessels & helicopters) Ice and Iceberg Management

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FPU Main Characteristics presentation

Ice resistant & turret disconectable floater Self propulsion (3 aft / 2 bow thrusters) Gas treatment Design capacity: 71.2 MSm3/d 3 separation & dehydration trains in parallel (3x33%) 2 condensate treatment trains (2x100%) Compression: 85 MW compression duty – 160 barg discharge Gas and Condensate metering before biphasic export Power Generation

Normal – 3 dual fuel TGs - 3 x 40MWe (n+1) Essential – 4 diesel generator – 4 x 10MWe (n) Emergency – 1 EDG – approx 2MWe Cold start – 1 Cold start generator – approx 120kW

Fully winterized FPU FPU POB capacity (300 / 350 for maintenance period in summer)

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FPU Process presentation

TEG Regen.

Package

Gas Metering

To 36" trunkline 1

MEG pretreatment, reclamation and

regeneration

To Produced water treatment Overboard

Swivel

MP Compression (2x 75 %)

Gas dehydration train (3 x 33%)

Gas Compression (4 x 33 %)

To Users (HP and LP)

Fuel gas system (1 x 100%)

CONDENSATE TRAIN (2 x 100%)

Production manifold (3 x 33%)

Gas Metering

To 36" trunkline 2

De-sanding

Inlet Separator(3 x 33%)

EXPORT

GAS PROCESS

INFIELD RISERS

INLET SEPARATION

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Technological Development

Shtokman FPU – Main technological challenges…

Topsides Winterization)

Disconnectable through MRB/Turret/swivel

First FPU development of its kind …paving the

way for future Arctic development

EER

Daily production (70MSm3/d)

Ice-resistant hull design for sea ice and iceberg

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FPU CLASSIFICATION

Dual CLASS Russian Maritime Register of Shipping / BV

Class notation as follows:

I HULL MACHOffshore Service Barge Production

Unrestricted navigation - Shtokman FieldAUTO POSA IG VeriSTAR-HULL HELARC DYNAPOS ALM LSA COLD STI

COMF

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FPU Layout Design Principles (1/2)• Topsides arrangement is optimized considering Shtokman challenges including:

–Safety and Environmental requirements –Cold weather, harsh sea and remote location conditions–Huge gas inventory onboard –50 years life time requiring stringent IMR

• Layout is strictly organized in order to keep the hull as a “safe space”–Segregate risks from topsides process to hull–Great care on hull penetrations for interfaces between hull and topsides–Achieve adequate “safe haven” in hull

• Marine systems are able to run independently from process topsides (i.e. as a ship)

And ….–FPU Hull space has been used to locate some utilities equipment/systems–FPU Hull deck has been used in order to optimize layout and limit

winterization impacts.

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FPU Layout Design Principles (2/2)

Process functionsLQ & Utilities functions

Storage of

MEG, Diesel, slop etc…

& utilities equipment

Storage of

Water etc…

& utilities equipment

No gas

Below main deck

Safer

Safer

(& warmer)

Low Pressure and Liquid

High Pressure Gas

Flare stack & KO drums

TR

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FPU Living Quarter Design Principles

The Temporary refuge is a key element of EER Strategy and FPU Safety Concept.

• The TR is a protected and independent cocoon inside the LQ designed for:

–Direct connection with the Safety Escape tunnel–Withstanding all major accidental hazards–Increasing the survival period on the FPU–Getting most of the Evacuation Equipment (Primary/Secondary)

immediately adjacent to the Living Quarters –Allowing personnel to stay onboard during/after an accident until the

“last” moment (i.e. no capsizing of Hull)–Allowing personnel to wait safely for best moment to evacuate.

• TR is located at aft to benefit from the Ice-Free Channel created by the FPU.

With the TR, the FPU Hull is, at first, our Life Buoy

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Valves main characteristics

2” to XX”

1” to 24”

2” to 42”

2” to 42”

Size

365

3603000

750

Topsides approx Qty

300# to 2500#75Relief valves

300# to 2500#90Automatic and Manual control valves

150# to 2500#Manual On/Off Valves

150# to 2500#145Actuated On/Off Valves

RatingHull approx Qty

Categories

All valves will be supplied by main contractor or packages vendors from approved vendor list

Main ON/OFF valves types used: Ball valves for practically all process applications Gate valves for utilities Butterfly valves for utilities Special Butterfly Valves (2 or 3 off sets) for process applications

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Valves main characteristics Main valves materials used:

Low Temperature Carbon Steel (LTCS) Stainless Steel (SS) Duplex, Super Duplex LTCS + Inconel 625 WO on all wetted areas

For critical functions: M/M seating, double sealing barriers (dynamic & static), fire safe, antistatic, interchangeability;

Due to tight layout onboard Mono-block Double Block & Bleed (DBB) valves are considered, mostly in Turret;

To address long design life of the plant (50 Years) following features observed: High level of integrity, reliability and availability; Enhanced design and robust materials selection; Proof sealing systems; Enhanced FAT;

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Mono-block DB&B Valves typical design

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Valves main characteristics

• Typical application for monobloc DBB insideTurret area (QCDC System)

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Valves main characteristics: side entry, forged body, flange ends

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Valves main characteristics: full welded body

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Valves main characteristics; side entry, forged body, hub ends

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Ball valve with DP seat design

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Main general requirements

All valves to be design, fabrication and testing in full compliance with applicable SDAG bases of design specifications (GS-EP-PVV-112 & 142, GS-EP-INS-101 & 137 and other project specifications);

For Marine applications, Dual class requirements (BV & RS) shall be applied;

Interchangeability;

Applicable Codes & Standards: ASME B 31.3, ASME B16.34, API 6D, API 598, API 6FA/607 BS 6755xx

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THANK YOU