Design and Analysis of Floating Production SystemsJinzhu XiaMarch, 2012

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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

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Australia’s Gas Network

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The Deepwater Frontier

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Offshore Platform Overview

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Worldwide FPSOs

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Worldwide Semisubs

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Worldwide TLPs

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Worldwide Spars

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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

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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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Model Testing

– Wave Basin Testing– Wind Tunnel Testing– VIM Testing

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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

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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

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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

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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

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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

−40 −20 0 20 40 60

−50

−40

−30

−20

−10

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10

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−5

−

−

−−

−3

−

−2

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−0.5

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0.5

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1

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2

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3.5

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4.5

55.5

4

3.5

63

2.5

2

5.5

1.5

1

5

6.5

0.5

5.5

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0.5

5.5

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5.5

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6.

−0.5−1

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−1−1.5

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1.5

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3.5

1

2.52.5

1.51.5

33

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3.5

2.5

1.5

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column area

column area

column area

column area

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Some KBR Milestones

Hutton TLPConocoPhillips

Hoover SparExxonMobil

Agbami FPSOChevron

Thunder Horse SemiBP