Material selection and welding criteria for high pressure marine risers used in tension leg platform applications
New materials have been developed for high pressure marine risers used in tension leg platform (TLP) applications. Modifications of standard AISI 8630 material provide low alloy steel grades which have good fracture toughness and excellent fatigue properties under high stress conditions, and are readily weldable. Materials and welding procedures are reviewed in light of increased performance demands for TLP applications, and considering design criteria established by the relevant certifying authorities. Work performed on the drilling and export risers for the industry's first (and to date, only) TLP installation is presented, with reference to monitoring and quality control activities involved in fabrication of those systems.
- Research Organization:
- Vetco Gray
- OSTI ID:
- 7199783
- Report Number(s):
- CONF-861080-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
423000 -- Engineering-- Marine Engineering-- (1980-)
ALLOYS
CONTROL
FABRICATION
FATIGUE
FRACTURE PROPERTIES
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MARINE RISERS
MATERIALS
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
MONITORING
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
PIPES
QUALITY CONTROL
STANDARDS
STEELS
SUPPORTS
WELDING
WELLS