2
Primary Engineering Scope
• Concept Screening and Sizing Studies• Naval Architecture• Hydrodynamic and Global Performance Analysis• Model Test Specification and Support• Mooring System Design and Analysis• Riser System Design and Analysis• Structural Design and Analysis • Marine System Design• Transportation and Installation Analysis• Project Execution Support
10
Platform Screening and Sizing
• Hull Configuration
• Hydrostatics & Static Stability
• Hull Weight and VCG• Natural Periods• Motions Estimates
• Hull Configuration
• Ballast/Storage Configuration• Hydrostatics & Stability • Hull Weight and VCG• Natural Periods and Motions
• Hull Configuration• Hydrostatics/Stability • Hull Weight and VCG• Fixed Ballast Estimate • Natural Periods• Mean Pitch Angle
Using benchmarked processes developed in-house, Granherne can efficiently size and compare platform options for specific field developments
Semisubs Spars
FPSOs
• Hull Configuration• Heave and Pitch Periods • Tendon Configuration• Tendon Strength• Offset and Air Gap• Ballast
TLPs
11
Naval Architecture
• Detailed Hull Configuration and Sizing• Arrangements and Layouts• Weight Control • Wind and Current Load Calculations• Compartmentalization• Intact and Damaged Stability• Certification & Classification• Operability Analysis • Marine Operating Manuals
Design of a Floating LNG Facility
Hard Tank Below WL
55.5 m
Mooring Elev. (-) 69.2m
VOID
VOID
BALLAST
SKIRTTANK
BALLAST
Deck #7
Deck #6
Deck #5
Deck #4
Deck #3Deck #2Deck #1Fixed Ballast Elev. (-)175.0m
Elev. (-)170.5mElev. (-)164m
Elev. (-) 56.4m
Elev. (-)22.8m
Elev. (-)6.0m
Elev. (+)6.0m
Elev (+)16.8m
Deck #8
Deck #9
VOID
Open Deck Elev. (-) 73.2m
Elev. (-)39.6m
22.2 m
Heave Plate Elev. (-) 121.8m
Heave Plate
Spar Hull ConfigurationFPSO Hull Configuration
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Hydrodynamic and Global Performance Analysis
– Wave Diffraction and Hull Motion Analysis– Coupled Hull, Mooring and Riser Analysis– Multi-Body Interaction Analysis– Air Gap Analysis– Slamming and Green Water Analysis– VIM Analysis
WAMIT analysis of various hull forms
Air gap analysis
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Mooring Design and Analysis
• Mooring Design:– Catenary/Taut/Semi-Taut Spread Mooring– Turret Mooring– Single Point Mooring– Quayside Mooring
• Specialty Analysis– Vortex-Induced Motion Effects– Polyester Application– Fatigue Analysis– Chain Wear Predictions
• Specification of Mooring Components• Procurement & Installation Support
Design of a soft yoke mooring system for Bohai Bay - China
Barracuda/Carintgua Detail Design ( Polyester Moorings)
Xv
Yv
Line 1Line 2Line 3
FW1
OilExp
GasExp
Line 4Line 5
Line 6
Line 7Line 8
Line 9
Line 10Line 11
Line 12
TW1
PW1WIW WIE
FWIE2PE3
PE2PE1
FE1
FE2
FE3
FE4
FE5
Fairleads
Spiral StrandWire Rope Sockets
Studless Chain
BP Atlantis - Detail Design, Procurement and Installation
Evaluation of VIM effects on an existing Spar Mooring System
15
Riser Design and Analysis
– Design of Single or Multiple Risers:• Flexible Risers• Steel Catenary Risers• Top-Tension Risers• SLOR (Tower) Risers• CVARs
– Dynamic Analysis, Interference Studies– 1st & 2nd Order Fatigue Analysis– VIV Analysis– Component Design and Specification
Detailed Analysis of Flexible Productions Risers for the Barracuda and Caratinga FPSOs
CVAR DevelopmentTTR and SCR Solutions
16
Structural Design and Analysis
– Design and Design Verification for:• FPSO and FLNG Ships • Semisubs• Spars• TLPs
– Global Strength and Fatigue Analysis – Development of “Fatigue-Friendly” Details– Advanced Finite Element Analysis– Dynamic Response Analysis– Specification Development– Fabrication Support
Analysis of FPSO Hull Structure
Detailed Global Strength and Fatigue Analysis Ocean Victory Class Semisubmersible
FEA of Forged Mooring Link Design of a Riser Protection Frame using Nonlinear Analysis
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Marine System Design
– Marine System Design for All Hulls– P&ID and Layout Development– Specification Development– Procurement Support– HVAC– Instrumentation and Controls
Atlantis Semisubmersible Marine & Utility System Design,
Procurement Support and Site Support Design of FPSO Bilge and Ballast Systems
18
Transportation and Installation Analysis
– Concept Development– Detail Engineering– On-site Installation Support– Third Party Review
Benguela Belize Topsides Transportation Analysis
Thunderhorse Flowline Jumper Installation AnalysisStep #1 Step #2 Step #3 Step #4 Step #5
PostUpending
Spar Upending Analysis
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BP ATLANTIS Semisubmersible Conoco Belanak FPSO
Project Execution Support
– Integrated Project Management– Owner’s Engineering Representative– Capabilities Include:
• Detail Engineering• Procurement Support• Regulatory Coordination• Fabrication Yard Support• Installation Support• Commissioning Support • Final Documentation
Petrobras Barracuda/Carintga FPSOs
20
Software Tools
Naval Architecture / Hydrodynamics• Hydrostatics & Stability
– HydroD– AutoHydro
• Hydrodynamics– WADAM, WAMIT– HydroStar
• Mooring– MIMOSA– OrcaFlex– Ariane
• Global Performance– SIMO– DeepC– AQWA
Structural Analysis
• SESAM• ABAQUS• SACS
Riser Analysis• Orcaflex• Riflex• Shear 7• VIVA• Flexcom 3D• DeepRiser• ABAQUS
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