l07 - risers

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L7 - RISERSRIGID RISER - FOR PLATFORMS FLEXIBLE DYNAMIC RISERS DESIGN MANUFACTURING TESTING ATTACHMENTS FIELD EXAMPLES DEEPWATER REQUIREMENTS STEEL CATENARY RISERS FIELD EXAMPLES RISER TOWERS FIELD EXAMPLES

RIGID RISERS

PRE-INSTALLED RIGID RISER COMPONENTS

I TUBE

J TUBE

RIGID RISERS AS PART OF JACKET CONSTRUCTION

RIGID PRODUCTION & DRILLING RISERS ON PLATFORM

SEMISUBMERSIBLE PRODUCTION PLATFORM FPSO Turret with Swivel stack turret

piping

Riser hang-off Guide tubee in a Lazy Wav Flexible Riser

risersFlexible Riser in a Lazy S

Mooring lines

Mooring lines

Mooring lines

Mooring lines

MIDWATER ARCH BUOYANCY TANKS TETHERED TO SEABED

DISTRIBUTED BUOYANCY FROM FOAM BLOCKS ALONG RISER

FLEXIBLE DYNAMIC RISERS

ARGYLE FIELD SEMI WITH RIGID RISER

BASIS OF REQUIREMENT FOR A FLEXIBLE DYNAMIC RISER AS LINK BETWEEN SEABED AND FLOATER Max Horizontal Excursion- 25m + 25m

POINT M - MEAN POSITION OF TURRET BOTTOM POINT A - BOTTOM DOWN MAX EXCURSION OF TURRET BOTTOM POINT B - TOP UP MAX EXCURSION OF TURRET BOTTOM RISER CATENARY SECTION (this provides reservoir of length to cope with the FPSO movements RISER TENSION SECTION

Max Vertical Excursion

BUp 8m

Down 10m

M A

NOTE - IN TOP UP POSITION THE RISER IS ALMOST STRAIGHT. IN BOTTOM DOWN THE RISER IS ALMOST TOUCHING THE SEABED

FLEXIBLE PIPE STRUCTURE

Coflexip Pipe

BASIC PRODUCTION FROM STEEL TAPES AND EXTRUDED PLASTIC

FLEXIBLES CONFIGURATIONS STANDARD RISER CONFIGURATIONS

FREE HANGING

STEEP S

LAZY S

STEEP WAVE

LAZY WAVE

Risers for Floating Production Semi

Flexible pipe design and analysis data specifications - Typical data required

TECHNIP (Coflexip)

France Brazil Angola Malaysis

MANUFACTURERS OF FLEXIBLE PIPE / RISERS

WELLSTREAM

Newcastle Florida

NKT

Denmark

Manufacturing Process - Wellstream Ltd, NewcastleExtrusionHydro Test Bays

InsulationPipe Completion

Tensile Armour Extrusion

Pressure Armour

Carcass

FLEXIBLE PIPE TESTING

24-hour Hydro Test

High Pressure Development - Burst Tests

FLEXIBLE DYNAMIC RISERS ON DELIVERY REELS

SPACE REQUIREMENTS FOR RISERS AND MOORING SYSTEMS IN A FPSO TURRET

DEVICES CONNECTED OR ATTACHED TO FLEXIBLE RISERS

Snorre B Production SemiSubmersible, Snorre TLP and Snorre Subsea Production Systems operating in Norway

Anasuria FPSO with Multiple Risers

POSSIBLE MEASUREMENT APPROACHES Monitor Riser Motions Monitor Shape and Spatial Position of Riser Monitor Roundness of Inner Bore Monitor Presence and Integrity of Buoyancy Monitor Acoustic and Vibration Signature Leak Detection

Monitor Touchdown and Seabed Interface

INTEGRITY ASSESSMENT AND MONITORING OF FLEXIBLES

FLEXIBLE PIPEDeepwater Solution - Integrated Production Bundle - Hot WaterExternal Plastic Sheath Thermal Insulation Tubes for CSO Patent Hot Water or/and Gas Lift

Flexible Riser Structure

GIRASSOL RISER TOWERS

RISER TOWER DETAILS

SLOR RISERSThe SLOR consists of a single vertical steel pipe connected to the foundation pile at the seabed and tensioned using a buoyancy cans at the top. The top of the buoyancy can is typically located 50-100m below the mean water level. The SLOR is generally situated 100-500m away from the vessel depending upon water depth and the vessel excursions.

The offtake assembly is connected to a flowline via rigid jumper.

The foundation pile is either suction pile, driven or drilled and grouted pile. The bottom assembly of the SLOR is connected to the foundation pile using a high integrity connector and terminated with an offtake assembly. The bottom assembly connection to the foundation pile is achieved by roto-latch (or any flex element) or using a tapered stress joint.

STEEL CATENARY RISERS

LMS

500 FT REGION WITH VIV SUPPRESSION STRAKES

HULL RISER PIPING

TENDONS

FLEX JOINTS STEEL CATENARY RISERS

FIRST USE OF SCRs

TOU

CHD OW

NR

E GI ON (2

860

AUGER STEEL CATENARY RISERS

FT W

ATE

RD

E PT

H)

FIRST USE OF SCRs ON A PRODUCTION SEMISUBMERSIBLE (P 18 Semi in Brazilian water)

FIRST USE OF SCRs FROM A FPSO (Bonga FPSO - Nigeria)