Roadmap to the all-composite riser - MCEDD

April 2019

Roadmap to the all-composite riser

Simplicity

© Magma Global Ltd Confidential 2

All engineering follows a progressive adoption path


PREDICTABLE PROGRESSION

0

10

20

30

40

50

60

F-111 A310 A330/340 A320 series F-35 Boeing 787

Composite % of aircraft massStructurally almost all

composites

Source: Technovation, Sept 2015

First composites

used

RudderSpoilers

Airbrakes

Wing skinsFixed skins

Engine nacelles

Access covers

FlapsDry HTP box

LG doorsEngine cowlings

Rear bulkheadKeel beam

J-nose

Hybrid risers

All-composite risers

JumpersFlowlines

Heidrun riser joint

Grids gratings

floors

Frac balls Plugs

WHY PEEK CARBON FIBRE RISERS?

© Magma Global Ltd Confidential 3© Magma Global Ltd Confidential

Flexibility Corrosion resistanceStrength : weight ratio

RELEVANT MILESTONES


✓ Sour service capability

✓ Deepwater deployment

• Insulated and weighted m-pipe

• High pressure high temperature

• 8” composite riser pipe for Hybrid Riser Tower

© Magma Global Ltd Confidential 5© Magma Global Ltd Confidential 5

SOUR SERVICE SUBSEA DEPLOYMENT

• High sour service gas injection

• 25 year design life, 1000m water depth, 5ksi

• 2.5” 40m jumpers for gas injection

• Light weight simplification

• Rapid installation

• Lowest pipe and installation cost

• Pipe, end fittings and FAT in 8 weeks

DEEPWATER DRILLING RISER


• m-pipe deployed independently of drilling riser

• 4 ¾" boost lines

• 840m per hour (70% speed) to 1200m depth

• ROV stabbed & latched in 2 minutes

• Tensioned to remain 10m aft of riser in 0.5kt current

• m-pipe is “stout, tolerant of compression and clashing”

• Deployed from 8.2m reel


http://logonoid.com/transocean-logo/


NORTH SEA QUALIFICATION PROJECT

• Current project

• 6inch insulated and weighted m-pipe

• Insulation improves flow by maintaining temperature of production fluids

• Material composition can be adjusted to add weight for stability of the pipe in the water column

• Chemical compatibility, strength and flexibility to be evaluated

• Flowlines with the most severe geometrical route selected for the project

HIGH PRESSURE HIGH TEMPERATURE QUALIFICATION


• Current project

• Next generation emergency well containment riser

• Rapid response solution for 6 month lifespan

• 250m m-pipe connects a rigid riser to the incident well

• Decoupled solution improves operability and reduces risk

• Qualification of 180°C, 15ksi 6inch m-pipe


HYBRID RISER TOWER ALLIANCE


CompRiser® benefits versus rigid steel riser tower

• Reduces build from 250 to 50 days

• Reduces production & installation vessel payload

• Reduces project cost and risk

• Avoids corrosion challenge

CompRiser® Qualification Programme DNV and Petrobras

• 6” and 8” qualification for pre-salt conditions to commence soon


PREFERRED ALL-COMPOSITE DESIGN: SLOR

• Carbon fibre SLOR design

• Lightweight and fatigue resistant

• m-pipe spans seabed to just below surface

• Small buoyancy module provides stability

• Connects to FPSO via dynamic m-pipe jumper

• Cost-effective solution

• Suited to any deepwater basin

• Decouples subsea architecture from the FPSO to reduce risk

TENSILE STRENGTH VERSUS FLEXIBILITY


• Composite laminate is built up in layers of fibre/PEEK tape

• Fibres run in one direction along the length of the tape

• Strength and stiffness corresponds with the fibre direction

– Tape lay angle dictates flexibility versus axial tension

• Biaxial gives the highest flexibility

– Suitable for jumpers

• Triaxial gives high tension and axial strength

– Suitable for risers

Biaxial high flex

Triaxial high tension

REMAINING CHALLENGES


High tension carbon fibre pipe can still be spooled

• Large MBR, bigger reels

Logistics and installation implications

• Bigger, lighter, reels on customised vessels

• Or tow out as seen in CompRiser® design

The O&G industry is still very steel focused

• Now becoming more accepting of composites

Boeing 787 structure is almost entirely compositeDubbed 7E7 with E for Efficient

CONCLUSIONS

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Hybrid riser designs are the next generation of riser systems

• HFP is the optimal design for free-hanging risers

• CompRiser® is the hybrid riser tower option

Composite history suggests further exploitation will come as surrounding infrastructure develops

© Magma Global Ltd Confidential

Looking forward:• Investigate Magma’s all-composite riser designs• Consider vessel design to accommodate• Consider alternative deployment methods

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Roadmap to the all-composite riser - MCEDD