flowlines and risers
Post on 14-Apr-2018
234 Views
Preview:
TRANSCRIPT
-
7/29/2019 Flowlines and risers
1/13
Flowlines & Risers
Chris Braithwaite, COO
Wellstream International Limited. Duplication in full or in part is prohibited.
Wellstream International Limited
-
7/29/2019 Flowlines and risers
2/13
Wellstream Snapshot
Manufacturer of unbonded flexible flowlines & risers since 1989
Strong #2 in industry
HQ in Newcastle since 1996 Bespoke technology for deepwater
Key enabler in floating production and subsea developments
Fast developing onshore capability - FlexSteel
Wellstream International Limited. Duplication in full or in part is prohibited.
Developing installation capability Major exporter
More than 90% of all output
New plant in Niteroi, Brazil opened May 2007
Significant R&D investment
-
7/29/2019 Flowlines and risers
3/13
History in North East
Headquartered in the North East since 1996
Corporate, technology and manufacturing global centre
First production Dec-97 Site selected from > 20 potential locations in Europe
Attracted by:
Dee water access and heav lift load-out ca abilit
Wellstream International Limited. Duplication in full or in part is prohibited.
Strong engineering & manufacturing base of North East
Local & government support
-
7/29/2019 Flowlines and risers
4/13
Global Locations
Calgary
Denver
Houston Panama City
Newcastle upon Tyne
Wellstream International Limited. Duplication in full or in part is prohibited.
Niteri, Rio de Janeiro
Perth
FlexSteelTM Onshore Systems Manufacturing
Offshore Systems Manufacturing
Project Management & Engineering
Sales and Customer Support
-
7/29/2019 Flowlines and risers
5/13
Terminology Flowlines & Risers
Jumpers
Transfer
Lines
Wellstream International Limited. Duplication in full or in part is prohibited.
Flowlines
Risers
-
7/29/2019 Flowlines and risers
6/13
In-Field or Flowlines
From wellhead or manifold to platform or FPSO
Carry a mixture of oil, gas, water and sand
Short lengths
-
7/29/2019 Flowlines and risers
7/13
Riser Applications
Section of line from seabed tofixed or floating topsides
Many types and uses:
Drilling
Wellstream International Limited. Duplication in full or in part is prohibited.
Water injection
Export/import
Workover
Control, power and chemicals
-
7/29/2019 Flowlines and risers
8/13
Flexible Production and Export Risers
FPSO
Storage vessel Turret withbend stiffeners
Anchor cables
Wellstream International Limited. Duplication in full or in part is prohibited.
Export risers(lazy wave)
Flowline risers(lazy S)
Clump weight
Tethered mid-water arch buoy
Subseamanifold
Distributedbuoyancy
Touchdownclamp and tether
-
7/29/2019 Flowlines and risers
9/13
Rigid Risers to Floating Vessels
FPSO vessel
Bare pipe Top- tensioned
Shuttle
W riser
SPM
Turret
Wellstream International Limited. Duplication in full or in part is prohibited.
Buoyantsleeves
Compliantvertical
axis riser
Lazy wavesteel catenary riser
Bare pipe
Buoyantsleeves
Steelcatenary
riser
-
7/29/2019 Flowlines and risers
10/13
Hybrid Risers
Export linesfrom
FPSO to SPMFlexiblerisers
Buoyancy Rigid tower
Self-buoyant
Minimise transfer
of load to FPSO
Linking flexibles
Fixed vessel
Wellstream International Limited. Duplication in full or in part is prohibited.
Rigidrisertower
Benign conditions
Girassol fieldwith hybrid risers
and flowline bundles
-
7/29/2019 Flowlines and risers
11/13
Key Design Considerations
Gross structural integrity(tension, pressure)
Riser interaction (clashing,
interference andentanglement)
Fatigue (curvature and tensionranges)
Local analysis
Gap span
Flexlok stress analysis
Corrosion fatigue
Material compatibility
Wellstream International Limited. Duplication in full or in part is prohibited.
Touch down point
Abrasion
Local armour buckling (bird-caging)
Collapse
On-Bottom Stability
Upheaval Buckling
-
7/29/2019 Flowlines and risers
12/13
Flexible versus Rigid Solutions
FPSO
TLP / SPAR
Fixed Structure
Semi-Sub
Dynamic Static
Wellstream International Limited. Duplication in full or in part is prohibited.
FLEXIBLESOLUTION
RIGIDSOLUTION
Steel
CatenaryRisers
RiserTowers
LongExportLines
Ideal for fast-track (EPS)
Re-Use
Niche Application
- Dynamic
Tested priorto Delivery
Corrosion Resistant
Naturally Insulating
Congested Field Infrastructure
High Mob / De-Mob
High Installation Costs
Technicallystraight forward
Known Product
Subsea
StepOutsFlexible FlowlinesEconomic Short Lengths
Lower flexibility
(not re-usable)
Material Cost
Lowestinstalled costs
-
7/29/2019 Flowlines and risers
13/13
Flowlines and Risers Services and Products
PRODUCTS SERVICES
Rigid linepipe Pipe & Riser Installation
Pipe coating Project Management Flexibles & Bundles Raw Materials; Design
End fittings Fabrication
Ancillaries Inspection
Wellstream International Limited. Duplication in full or in part is prohibited.
PLETs & PLEMs Repair & Maintenance Pumps & Compressors Remote Intervention
Subsea support structures Decommissioning
Approx. 50% of SURF spend is associated with flowlines and risers
top related