bundles subsea uk lunch and learn 2012

8/12/2019 Bundles Subsea Uk Lunch and Learn 2012

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27.1.11 1Page

Bundle Pipeline Systems

& Shell FRAM DevelopmentIain Watson & Peter Walker

March 21st, 2012


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Bundle Technologies

Advantages of Bundle Systems

Agenda

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2Page27.1.11

Shell Fram Bundle FEED


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Bundle Technologies

Agenda

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Shell Fram FEED


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What is a Bundle / Towed Pipeline Solution? A Pipeline Bundle is a carrier pipe within which any combination of

individual pipelines and umbilical components is carried.

The individual components terminate in Towheads within which

manifolding may take place. A Towed Pipeline Solution provides a low stress installation method

where-by a pipeline bundle is towed and installed using the ControlledDepth Tow Method.

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Subsea 7 Installed Bundles

sgard

Heidrun

NorwayNorway

Osprey

Cormorant

Frigg East

Murchison

GullfaksBruce

65 bundles in 33 years

Up to 7.6km length

Up to 28.7km in series

Up to 320m water depth

Shallowest 42m

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Claymore

PiperSaltire Thelma

Cyrus, FarragonScapa

Alba

Gannet

Embla

Dan DenmarkDenmark

WickWick

ScotlandScotland

Buckland Leadon

Skene

Longest tow 1000 km Up to 49.5 carrier

Up to 545 te towhead

Heaviest bundle 9154 te

Up to 3 PiP flowlines

U-value


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Bundle Components

Flowlines

Insulation

Sleeve Pipe

Control/Chemical Tubes

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, ,

Main Spacer

Centraliser Pipe-in-Pipe Spacer

Bulkheads

Ballast Chains

Anodes


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What exactly is a Pipeline Bundle?

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Typical Bundle Layout

BP Machar

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BP Andrew

Kerr McGee Leadon


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Materials

Flowline Materials

Carbon steel - X52, X65, X70 with SS or

Alloy Liners

Corrosion Resistant Alloys - 13% 22% & 25%

Cr Steels

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Plastic (HDPE) Liners for Water Injection Lines

Controls

Hard Pipe Hydraulic and Chemical Systems -

316 SS, 25% Cr Duplex to Carbon Steel

Electrical & Fibre Optic Control Systems


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The Long Trek West

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Wester Fabrication Facility

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Hastigrow Fabrication Facility

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Welding Firing Lines

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Inner Bundle Fabrication

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Insulation Type

Passive Insulation System

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Pipe-in-Pipe System

Electrical Active/Trace Heating

Indirect Hot Water Heating


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Production Line Insulation

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Applying ITP Izoflex Insulation

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Applying ITP Izoflex Insulation

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Spot Welding Steel Sheet Over ITP Izoflex

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Spot Welding Steel Sheet Over ITP Izoflex

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Bundle System Applicability

1500

2000

m)

Wet Insulation

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0

500

1000

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

WaterDep

th(

U-Value (W/m2K)

Pipe-in-Pipe

Bundles - Towed Pipeline Systems

Flexibles


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Flow Assurance Geometry of Pipelines

The environment within the carrier pipe provides an ideal opportunity forinnovative solutions in Flow Assurance.

The pipelines can be arranged to facilitate heat transfer between product linesor from dedicated heating lines.

Heat transfer analysis confirmed by experimental results.

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Active Heating Systems

Warm-up before Start-up

Increase Temperatures for Low Production Rates

Keep System Temperature High during Shutdowns

Reduce Chemical Injection

Six Active Heating Systems installed in the North Sea

Hot Water Circulation over distances of 15 km

Electric Heat Transfer


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Carrier Sheathing

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27m lengths welded into 500-1000m trains All production operations on line

Trains sheathed to final location

Final field joint tie-ins


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Towheads

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Jura Manifold Beach Landing

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Jura Manifold Beach Landing

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Bulkheads

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Bulkheads

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Towhead Tie-In

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Bundle Launch

Structures greater than 500Te

Tidal currents monitored & tug

locations altered accordingly

Tug bollard pull up to 400Te

Capstan winch providing

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o ac tens on up to e

A99 road bridge opens to allow

large structures to pass through


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Launch

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Control Depth Tow Method Chains attached at regular intervals along the

bundle.

Ensures accurate weight control to

approximately 0.5%.

Weight of chain links on seabed is submergedweight of bundle.

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for tow if required.


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CDTM in Practice

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A data highway runs thelength of the bundle andallows acoustic commandsmade at one end of thebundle to be implemented atthe other, for example forvalve actuation or acousticspool metrology.

Towmasters real-time display of bundle shape and water depth


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What We Can Do

Field Concept Development, FEED Studies

Tender Engineering

Detailed Design & Fabrication Launch, Tow & Installation Analysis

Dynamic & Fatigue Analysis

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Regional Support (Bundles), Norway & Asia Pacific


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Bundle Technologies

Advantages of Bundle Systems

Agenda

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Shell Fram Bundle FEED


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Why Bundles? - Advantages

Eliminate the requirement for heavy lift vessels by incorporating Subsea Structures within a

Towed Production System (Maximum to date 545te).

Testing and commissioning of complete system onshore therefore reducing offshore time: -

Hydro testing, dewatering, drying, control fluid flushing, valve operations etc.

Fast hook up and commissioning for early first oil dates.

Installation under existing or temporary floating assets.

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Reduced number of subsea tie-ins and spool installations.

Seabed stability using Gravity Based or Piled design.

Protection incorporated in structure design.

Improved Flow Assurance / thermal Management (Heated Hot Water, Trace Heating).

Leak mitigation in case of internal flowline failure (maintain leaked oil within Carrier Annulus) -

Flowline safety class can be reduced when using DNV-OS-F101 Design Code.

Use of CRA Lined pipe in place of Clad pipe or solid CRA pipe.

High Temperature Flowline Design (up to 160C curre ntly).

Turn out cost more predictable (reduced exposure to weather/soils risk).


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Fram Field Location

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Fram Field Location

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Fram Development Proposed Field Concept

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Fram Development Proposed Field Layout (Xodus)

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Fram Infield Layout

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Fram FPSO Approaches (Xodus)

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Fram Drill Centre East Towhead & Well Tie-ins (Xodus)

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Fram Drill Centre West Towhead & Well Tie-ins (Xodus)

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Fram Bundle FEED - Principal Design Assumptions

Principal Design Data / Assumptions for Fram FEED:

8 Slot towhead manifold at DCE (5 wells initially).

6 Slot towhead manifold at DCW (3 wells initially).

2 midline SSIV structures required at FPSO (out with swing circle).

14 NB Gas Export SSIV located in Midline Towhead (East).

Shared services between drill centres sin le test riser as lift riser & riser umbilical .

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Mixture of Oil & Gas Wells at both drill centres. 345 Barg Design Pressure / 110C Design Temperature (Production/Test).

Max CO2 content ~1.1 mol.% in produced fluids.

Max. H2S ~6 ppmv in produced fluids.

~47,000 mg/l Chlorides in produced water.

Water depth infield ~ 95 m (wrt LAT).

20 year system design life


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Fram Bundle Cross Section Designs

DCE & DCW Bundle Cross Sections

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Midline Bundle Cross Section (Shared Services)


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Pipe-in-pipe Insulation System Performance (both options)

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CRA Lined Pipe (Butting) Mechanically Bonded (BuBi)

Fram Bundle Production & Test Line Linepipe Design

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The Mechanically bonded Butting Bimetal Pipe (BuBi Linepipe)


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Fram Bundle Simplified Configuration (P&ID)

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Fram Bundle - DCE Towhead Pipework (General Assembly)

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Fram Bundle - DCW Towhead (General Assembly)

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Fram Bundle - Midline Structure East (GA)

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Fram Bundle - Midline Structure West (GA)

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Bundle Launch at Subsea 7s Wester Site

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Bundle Tow Route

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Bundle Tow Configuration

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Bundle Tow Route

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Control Depth Tow Method

Chains attached at regular intervals along thebundle.

Ensures accurate weight control toapproximately 0.5%.

Weight of chain links on seabed is submergedweight of bundle.

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for tow if required.


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Questions?

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27.1.11 62Page

seabed-to-surface

www.subsea7.com

bundles subsea uk lunch and learn 2012

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