Tuberia Flexible Offshore

7/25/2019 Tuberia Flexible Offshore

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GE Oil & Gas

Flexible Pipe for Offshore Applications

SPE Workshop

Oil and Gas Facilities in Latin America:Monetizing Reserves in ChallengingEnvironments

Nader Matari, Flexible pipe System Design Engineer

[email protected]

Lima, Per

23-24 April 2014
mailto:[email protected]:[email protected]


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Outline

Introduction Applications

Technical Capacity

Structural Composition

Material Selection

End Fittings

Dynamic Risers

Shallow Water Applications

Field History


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Flexible pipe at a Glance

Pipes primarily used on the seabed and throughthe water column for the transport of oil and gas

well fluids

Global track-record in offshore hydrocarbon

development

Strong focus on R&D and product development

3 manufactures in the world

Custom made product


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Wellstream flexible pipe technologyPerformance Capacity

Pipe ID 2 18 true ID

Design pressure 15,000 psi

Water depth 10,000 ft

Applications Risers, subsea jumpers, topside jumpers,hybrid, riser towers

Advantages

Proven track record: 2500flexible riser installed vs 500SCRs

Fully tested at the factory priorto delivery

Rapid installation & retrieval

Re-usable

Promotes flexibility in field

architecture


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Applications of the flexible pipe

Designed to have the strength and durability associated with rigid steel pipes, flexible systems

are often the only solution for risers in dynamic environments

FlowlinesStatic pipelines used to carry

fluids on the sea bed

Risers

Pipes suspended in the water

column connecting FPSOs to

subsea infrastructure

Jumpers

Short lengths of pipe connecting

two fixed structures either above

or below water

Transfer Lines

Tend to be large diameter

pipelines connecting two

structures which are often

dynamic


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Common Structural

CompositionCarcass (Flexbody)

Prevents collapse under external

hydrostatic pressure

Internal Pressure Sheath (Flexbarrier)

Acts as the boundary for conveyed fluid

Interlocked Pressure Armour (Flexlok)

Resists internal & external pressure inthe hoop direction

Inner Layer & Outer Layer of Tensile

Armour (Flextensile)

Provides both hoop and axial strength

Insulating Layer (Flexinsul)

Protects against heat loss

Outer Sheath (Flexshield)

Protects against seawater ingress and

other mechanical damage
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Material SelectionPolymer HDPE Nylon XDPE PVDF

Increasing temperature resistance

Production @ 200F PVDF

Gas Injection Static & Water Injection HDPE

Gas Injection Dynamic PA12

Carbon Steel85ksi 100ksi 190ksi

9mm x 3mm Static Applications

8mm x 4mm Dynamic Applications

12mm x 6mm GI Dynamic Application

2 mm 7 mmThickness

Polymer HDPE PA11/PA12

Static applications HDPE (Yellow)

Dynamic applications PA11/PA12 (Black)

Syntactic Foam PT1000 PT3000 PT7000

Below 1000m

Production Lines

3.5 mm 7 mmThickness

Carcass 316L SS 2205 Duplex AL6-XN

Allows for Smaller OD

Reduces Hang Off Loads

Minimizes Reel Amounts

Carbon Steel 85ksi 110ksi 155ksi

Pressure Containment

Smooth Bore Applications Collapse

4.8mm 10mmThickness

Interlayer Tapes

PolypropyleneHigh Strength Glass

PA 11 Anti Wear Tape

Static

Dynamic

12mm

Interlocked Pressure Armour types


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End Fitting Technology

End fittings are critical components of any flexible pipe

system

Custom designed for each flexible pipe structure

Each layer of the pipe individually terminated

Designed to:

Assure a leak tight transition between subsea andsurface facilities

Withstand severe environmental loads and thermal

cycling

Stronger than pipe in burst and failure tension

Allow for the venting of permeated gases

Terminations can be any design - API/ANSI flanges, hubs,welded, or other

Most common structural material is F22 low alloy steel


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Ancillary Equipment Technology

A key component of any flexible riser and flowline system isthe design and analysis of all required ancillary equipment

Bend Stiffeners & Restrictors

Installation Aids

Seabed Stabilisation

Buoyancy

FlexiblePipe

BraceletAnodes

Subsea BendStiffener Assembly

DistributedBuoyancy Modules

End FittingAssembly

Topsides BendStiffener Assembly

I-Tube InterfaceFlange

Split FlangeHang-Off

Grayloc InterfaceAssembly (Hub, Clamp,

Gasket, Test Head)


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Dynamic Riser System

Usual Configurations are:

FREE HANGING LAZY WAVE STEEP WAVE

TETHER WAVE STEEP S LAZY S TETHER WAVE


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Riser Configurations

Lazy WaveFree Hanging Catenary Weighted Lazy Wave

Increased compliance Increased vertical control

Sea bed lateral control can be enhanced through the use of holdback clamps.


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Applications on fixed platforms

Flexible pipe can be installed from the top of the platform; the following scenariosmust be considered:

topside

tall jacket

riser leg clamps

flexible riser

flexible pipe -

end fitting in

topside clamp

flexible

riser

simple

catenary

flexible pipe -

end fitting in

topside clamp

1. The riser leg clamps will assist stability on

taller platforms.

2. A simple catenary is a rapid solution onsmaller platforms (lower water depth)

3. Rigid riser could be used


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Submarine installation in

shallow waters

Rigid riser

must bepreviously

installed on

the platform in

order to speed

the installation


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Flexible pipe standards ANSI / ISO 12628 / API 17J - Specification for Unbonded Flexible Pipe -

Petroleum natural gas industries - Drilling and production equipment -Design and operation of subsea system- Part 2: Flexible pipe systems for

subsea and marine applications.

Petrobras NI-2409-A - Flexible Pipe Specification - 2003

Must be in compliance on all Petrobras Projects.

Bureau Veritas NI 364 DTO ROO E - Non-bonded Flexible Steel Pipes used

as Flowlines

DNVF109 On-Bottom Stability Design Of Submarine Pipelines

RP17B - Recommended Practice for Unbonded Flexible Pipe (sister

document to API 17J)

PERU SPECS:

DS 032-2004 : Art. 259API 17A is a reference on the production

operations. API 17A contains API 17B and 17J

DS 081-2007 : on the general dispositions, in the chapter fifth, art. 49 uses

as a bases the ANSI/ASME B31.4 or ANSI/ASME B31.8. . The ANSI/ASME

B31.4 specify that in the case of the use of flexible pipe, the API 17J and B

must be used.

FLEXIBLE PIPE IS DIFFERENT FROM THE RIGID PIPE. EACH TYPE HASITS OWNS SPEC


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ex epipe

users


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ExxonMobil Kizomba A

Scope of Work 4 to 16-inch Fluid Transfer Lines approx 400m

each

9 to 11-inch SLOR Jumpers approx 400m

Challenges Complex analytical interfaces with the SLOR

system and FPSO

Manufacturing and handling of very heavy and

stiff pipe

Combination of large diameter, high pressure and

high temperature design


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Scope of Work 120km 4-inch gas lift/production risers &

flowlines

120km 6-inch production risers & flowlines

81km 6-inch & 8-inch smooth bore water

injection risers & flowlines

16km 9.5-inch gas export risers & flowlines

Technical Challenges

Water depths down to 1,150m

Parallel qualification of products

Barracuda/Caratinga

Petrobras Barracuda/Caratinga, Brazil


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Chevron Frade

Scope of Work 56km 6-inch production risers & flowlines

15km 6-inch gas lift risers & flowlines

20km 8-inch smooth bore water injectionrisers & flowlines

42km 8-inch gas export risers & flowlines

33 subsea jumpers Technical Challenges

Water depths down to 1,200m

Sour service, heavily insulated productionrisers Rio De Janeiro


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GOM High Pressure Supply History

Kerr McGee

Boomvang/Nansen Spars 2000

Risers, flowlines, jumpers

5.625 ID, 6000psi, 3200ft WD

Kerr McGee

Gunnison Spar 2002


5.375 ID, 8000psi, 3100ft WD

BP

Marlin TLP 2000


6 ID, 6000psi, 3200ft wd

Kerr McGeeNeptune Spar 1996


7.625 ID, 2200psi, 1930ft

3.826 ID, 7000psi, 1930ft

Agip

Morpeth TLP 1998


4 ID, 7100psi, 1700ft

Agip

Gyrfalcon 1998

Static Riser

5 ID, 12,200psi, 880ft WD

PhilipsGarden Banks 1994

Subsea Jumper

4 ID, 10,000psi, 1500ft WD

Murphy

Medusa 2004

Risers, flowlines,4 ID, 7850psi, 3000ft

Walter

Ulysses 2004

Risers, 4 ID, 7850psi, 3000ft

Walter EW 921

Morpeth TLP 2005

Risers, flowlines

4 ID, 7100psi, 1700ft

Mariner Black Widow

Morpeth TLP 2000

Risers, flowlines

4 ID, 7100psi, 1700ft

ATP

Gomez 2004

Risers, flowlines4 ID, 8000psi, 3000ft

BP

Mad Dog TLP 2006

Topside jumpers

4.5 ID, 7350psi


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Tuberia Flexible Offshore

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