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Comprehensive Evaluations of LNG Transfer Technology for Offshore LNG Development
Summary
• Marine LNG terminal concepts
• LNG transfer system technologies
• LNG system component
• System evaluations
• Conclusions
GBS - Port Pelican Project
ChevronTexaco
Floating LNG Facilities
Courtesy of IHI
Floating Storage Regasification Unit
FSRUFSRU
Courtesy of Moss Maritime
LNG Transfer Technologies
• Boom to tanker and tandem loading systems (BTT)
• Offshore cryogenic loading system (OCL)
• Soft yoke system (SBM)
• Big sweep system (Bluewater)
• Eurodim conceptual systems (Eurodim)
Boom to Tanker (BTT)
Courtesy of FMC
OCL System
Courtesy of OCL Group
SBM Floating Soft Yoke
Courtesy of SBM
FLNG-based Big Sweep
Courtesy of Bluewater
Eurodim Concepts
Courtesy of Eurodim
System Components
• FMC Chicksan loading arms
• Cryogenic loading hoses
- Coflexip aerial hose & floating hose
- OCL system cryogenic hoses
• Amplitude LNG Loading System (ALLS)
• Subsea cryogenic pipelines
- Jacket insulated pipelines
- Vacuum Insulated Pipelines
Subsea Cryogenic Pipelines
• ITP InTerPipe subsea cryogenic pipelines
- Nickel alloy inner pipe, carbon steel outer pipes
- Eliminate the need for a jetty
- Not limited by length, diameter or water depth
• Chart Industries vacuum insulated pipelines
- Connect pipe section with bellow arrangements
- Used at Trinidad LNG plant as a 4” cool down line
- Used at Everett LNG receiving terminal
System Evaluations Criteria
• Technical status and qualification
• System design and performance
• Operability and maintainability
• Safety and environmental
• Cost and schedule
• Shipping and marketing
Subjective weighting of each criterion above is project specific
Technical Status / Qualification
• Level of development
• Technical maturity level
• Quality and depth of program
• Gap identification and closure
• Participation by certifying agency
• Success confidential level
Rating and Scoring
Excellent Highly efficient, minimal cost
Very good Improved performance, moderate cost, uninterrupted operations
Good Competitive capital cost, satisfies regulatory
Satisfactory Affordable, satisfies minimum regulatory
Fair Expensive, meets minimum regulatory
Poor Many shortfalls, excessive cost, below regulatory and uneconomic
Common Concerns
• Lack of a common connector technology
- Bow loading system
- Amidships loading system
• Flexibility for terminal and ship
- To send our LNG carriers to any terminals
- To accept any LNG carriers at our terminals
Conclusions
• Many innovative offshore LNG transfer systems are available and reviewed
• Criteria for evaluation are safety, environmental, technical, commercial and political drivers
• Common connectors and interfaces are important
• Need to maximize the utilization of vessels and offshore LNG terminals
• This paper offers a methodology for evaluating various LNG transfer technologies for successful deployment of offshore LNG