Deepwater Riser Engineering
Course Program
Overview (P. Stanton, Technip Offshore)
- Riser Types
- Riser Concept Selection for Field Development
- Factors in Riser Selection
- Cost Comparison
- Technical Challenges and Potential Solutions
- Riser Risk Analysis and Integrity
- Inspection, Maintenance and Repair
- Deepwater Riser JIPs and R&D Activities
- Design Code General
- Design Format Expressions
- Limit State Categorization
- LRFD vs. WSD
- Comparison of API RP 2RD and DNV OS F201
- New API RP 2RD Developments
- Regulatory Requirements
Fundamentals of Riser Engineering (K. Kavanagh, MCS)
- Finite Element Method ABC
- Solution Methods (Eigenvalues, Frequency Domain, Time Domain)
- Wave Theory and Hydrodynamics ABC
- Catenary Theory
- SN Curves vs. Fracture Mechanics
- Rain Flow Counting Method
Top Tensioned Risers (G. Wald, Shell Oil)
- Dry Tree vs. Wet Tree Concepts
- Global Configuration
- Subsea Layout
- Well Bay Layout
- Pros and Cons of Each Configuration
- Component Level Description
- TTR Examples
Hybrid Riser Systems (G. Wald, Shell Oil)
- Global Configuration
- Tower Risers
- Hybrid Risers
- Truss Risers
- Offset Risers
- Tension Leg Risers
- Pros and Cons of Each Configuration
- Component Level Description
- Hybrid Riser Examples
Steel Catenary Risers (C. Galvin, MCS)
- Global Configuration
- Simple Catenary Configuration
- Lazy Wave Configuration
- Pros and Cons of Each Configuration
- Component Level Description
- Riser Top Hang-Off System
- Riser Closing Spool
- Riser Joints
- VIV Suppression Devices
- Buoyancy Modules
- Cathodic Protection System
- Riser Coating (Anti-Corrosion and Thermal Insulation)
- Thicker Pipe Section
- Riser End Termination
- Catenary Riser Examples
Flexible Risers (E. Balch, MCS)
- Global Configuration
- Simple Free Hanging Catenary Configuration
- Lazy Wave Configuration
- Pliant Wave Configuration
- Chinese Lantern Configuration
- Steep S Configuration
- Pros and Cons of Each Configuration
- Component Level Description
- Cross Section
- End Fittings
- Bend Stiffener
- Top Vessel Interface Termination
- Subsea End Termination
- Clamp and Anchorage Pile
- Riser Support Structures and Arch Support
- Flexible Riser Examples
Riser Design Methods Overview (R. Song, Technip Offshore)
- Design Philosophy, Principles and Objectives
- Design Spirals
- System Key Design Issues
- Design Methods General
- Design Acceptance Criteria
- Safety Factor and Design Format
- System Interface Design
- Analysis Considerations
- Component Design Considerations
- Design Beyond Codes
Functional Requirements and Design Drivers (K. Kavanagh, MCS)
- General Design Requirements
- Design Procedure and Acceptance Criteria
- Functional Requirements for TTRs
- Functional Requirements for SCRs
- Functional Requirements for Hybrid Risers
- Functional Requirements for Flexible Risers
- Environmental Loading
- Design Drivers (Material, Fabrication, Welding, Coatings, Testing, Inspection, etc.)
- Metocean Data and Criteria
Riser System Analytical Tools (R. Song, Technip Offshore)
- Riser Software Selection Requirements
- General FEA Tools
- Riser Global Analysis Tools
- Riser VIV Tools
- Riser Installation Analysis Tools
- Coupled System Analysis Tools
Design Basis Development (R. Song, Technip Offshore)
- General Riser Design Basis
- Typical Structure of Riser DBD
- Boundary Limits and Scope of Work
- Regulatory Requirements
- Codes, Standards and Project Specs
- Design Data
- Design and Analysis Methodology
- Design Requirements and Acceptance Criteria
- Other Design Issues
- Example of an SCR DBD
TTR Analysis and Design Methods (R. Burke, Technip Offshore)
- TTR Design Phases
- Definition of Basic Configuration
- DBD Development and Preparation
- Design Steps
- Pipe Sizing
- Tensioning System Sizing
- Riser Stroke AnalysisRiser Component Sizing
- VIV Induced Fatigue Analysis
- TTR Interference Analysis
- Strength Analysis
- Computer Modeling
- General Fatigue Analysis
- Centralizer Spacing Analysis
- Riser Running Analysis
- Buoyancy Can Compliant Guide Reaction Analysis
- Compliant Guide Design (SPAR)
- Installation Analysis
- Difference between Spar TTR and TLP TTR
- TTR Design Example
TTR Component Design
(G. Wald, Shell Oil)
- TTR Design Options
- Wellheads & Tie-Back Connectors
- Riser Joints Design
- Spar Keel Joints
- TLP TTR Tension Joints
- Tensioning System Option and Design
- Riser Joint Buoyancy Option
- Surface Tree Option
- Topside Production Jumpers
- Stress Joints
- Buoyancy Cans and Guides
Hybrid Riser Analysis and Design (G. Wald, Shell Oil)
- Hybrid Riser Analysis
- Modeling Approach
- Riser Sizing
- Strength Analysis
- VIV Analysis
- General Fatigue Analysis
- Design Example
Hybrid Riser Component Design
- Riser Pipe Design
- Flexible Jumper
- Mid-Water Buoyancy Can
- Buoyancy Modules
- Thermal Insulation Design
- Truss Structures
- Spacers
- Thermal Expansion Accommodations
- Riser Base Design (Pile & GBS)
Flexible Riser Analysis and Design Method (E. Balch, MCS)
- Material selection
- Structural design
- Resistance to internal pressure
- Resistance to hydrostatic external pressure
- Resistance to tensile loads
- Resistance to Installation loads
- Static and Dynamic Analyses
- Nominal configuration
- Extreme conditions
- Fatigue conditions
- Design of End fittings and Equipments
- End fittings
- Bend stiffeners
- Bell mouths
- Fatigue
- Components
- Pressure layers
- Tensile layers
- Analysis Example
- Flexible Riser Component Design
- General Requirements
- End Fittings Design
- Buoyancy
- Bend Stiffeners
- Bellmouths
- Bend Restrictor Design
- Tethers and Hold Down Equipment
Riser Materials (P. Boster, RTI Energy)
- Carbon Steel Line Pipe Materials Corrosion Resistant Alloys
- Forging Materials
- Titanium Materials
- Effect of HP/HT on Material Selection Effect of H2S and CO2 on Material Selection
- Anti-Corrosion Coating Materials Thermal Insulation Materials
Riser Pipe Fabrication, Welding and NDE (P. Boster, RTI Energy)
- Line Pipe Fabrication Process
- Cladding Pipe Fabrication Welding Procedure and Requirements
- NDE Lab and Full Scale Testing
- Scheduling and Planning
SCR Analysis and Design Methods (R. Song, Technip Offshore)
- General SCR Design Flowchart Material Selection and Wall Thickness Sizing
- Initial Global Configuration Design Computer Modeling
- Selection of Hydrodynamic Coefficients
- Analysis Methods (Strength, VIV, Motion Fatigue, Interference, VIM Fatigue, Heave VIV, & Installation) SCR Fatigue Design
- Interaction with Pipelines Specification Developments
- Typical Drawings
- SCR Design Example
SCR Component Design
- Composition of SCR System
- Hang Off System Design
- SCR Pipe Joints
- SCR Coating System Design
- SCR Field Joint Design
- VIV Suppression System
- SCR Cathodic Protection System Design
- Subsea Termination System
- SCR Accessories (J-Lay Collar; PIP Bulkhead; Water Stopper; Centralizer; Closing Spool)
- SCR Monitoring System Design
Installation Engineering (R. Song, Technip Offshore)
- Installation Methods Overview
- Installation Fleet
- Typical Installation Procedure (SCR & Flexible)
- SCR Installation Analysis
- Offshore Commissioning
- Installation Examples (SCR & Tower Riser)
Interactive Design Exercise (R.Song, Technip Offshore)
- Exercise Basis Brief
- Design Requirements
- Group Exercise
- Group Presentation
- Assessment and Discussion
Deepwater Riser Projects and Lessons Learned
(K. Kavanagh, MCS)
- Touring of Recent Deepwater Riser Projects
- Experience and Lessons Learned
Summary and Closing Remarks (R.Song, Technip Offshore)
*Review of Major Concept
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