Tc 67/sc 4 n date: 2005-03-9 iso/wd XXXXXX ISO tc 67/sc 4/wg 6 Secretariat: Design of dynamic risers for offshore production systems Élément introductif — Élément central — Élément complémentaire Warning
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ScopeThis document gives requirements, recommendations, and guidance for the design, analysis, materials, fabrication, testing, and operation of dynamic production riser systems used on floating production installations. The functional requirements defined in this standard will allow alternatives that suit specific field requirements. The intention is to facilitate and complement the decision process and, where requirements are non-mandatory, provide positive guidance for the selection of an optimum solution. Guidance is also given for developing interface information for the equipment attached to the risers. The approach for structural design of risers, as reflected in this document, is generally based on the principles of limiting states of the risers and related components under serviceability, ultimate limit state, accidental limit state, and fatigue limit state. This document covers the following risers for floating production installations:
Top tensioned risers, including production, injection, work-over/completion through a production riser, and high pressure drilling. Work-over/completion and drilling risers for mobile offshore vessels are covered by other ISO or API standards. Catenary risers, including import/export risers and dynamic parts of flowlines. Hybrid risers, and Offloading risers. This document assumes that the riser will be made of low alloy carbon steels or titanium. However, other metal materials, such as aluminum, are not excluded. Steel and titanium pipe will be called “metal” pipe and unbonded flexible pipe will be called “flexible” pipe. Composite materials and flexible pipes are beyond the scope of this standard. Design considerations for unbonded flexible pipe are included primarily by reference to API RP 17B “Recommended practice for flexible pipe”. Specific equipment or components covered are listed as follows (complete riser system from the sub-sea wellhead to the surface wellhead for a top tensioned riser (TTR), or from the end of the dynamic portion to the first flange above the hang-off for a catenary riser (SCR):
sub-sea wellheads, tie-back connectors, stress joints, riser joint pipe, riser joint connectors, keel joints, tension joints, surface wellheads, surface production trees, riser tensioning systems buoyancy modules, flexible joints, riser clamps, riser spider, VIV strakes, centralizers, foundation, casings, conductors, and jumpers. Interface design guidance, such as functional requirements for the associated equipment and component, will be given in the section on Design Considerations but component design will not be given. The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO Specification, Standards, Recommended Practices, Rules and GuidelinesISO Guide 25, General requirements for the competence of calibration and testing laboratories. ISO 148, Steel – Charpy impact test (V-notch). ISO 377, Steel and steel products – Location and preparation of samples and test pieces for mechanical testing. ISO 783, Metallic materials – Tensile testing at elevated temperature. ISO 1461, Hot dip galvanised coatings on fabricated iron and steel articles – Specifications and test methods. ISO 2566-1, Steel – Conversion of elongation values – Part 1: Carbon and low alloy steels. ISO 3183 (all parts), Petroleum and natural gas industries - Steel pipe for pipelines - Technical delivery conditions ISO 4885, Ferrous products – Heat treatment. ISO 6507-1, Metallic materials – Vickers hardness test – Part 1: Test method. ISO 6892, Metallic materials – Tensile testing at ambient temperature. ISO 9327-1, Steel forgings and rolled or forged bars for pressure vessels – Technical delivery conditions – Part 1: General requirements. ISO 9606-1, Approval testing of welders – Fusion welding – Part 1: Steels. ISO 9712, Non-destructive testing – qualification and certification of personnel. ISO 10423, Petroleum and natural gas industries – Drilling and production equipment – Specification for valves, wellhead and christmas tree equipment. ISO 10432, Petroleum and natural gas industries – Downhole equipment – Subsurface safety valve equipment. ISO 10474, Steel and products – Inspection documents. ISO 10945, Hydraulic fluid power – Gas loaded accumulators – Dimensions of gas ports. ISO 11960, Petroleum and natural gas industries – Steel pipes for use as casing or tubing for wells. ISO 11961, Petroleum and natural gas industries – Steel pipes for use as drill pipe – Specification. ISO 13535, Petroleum and natural gas industries – Drilling and production equipment - Hoisting Equipment. ISO 13625, Petroleum and natural gas industries—Drilling and production equipment—Marine drilling riser couplings. ISO 13628-2, Petroleum and natural gas industries – Design and operation of subsea production systems – Part 2: Flexible pipe systems for subsea and marine applications.. ISO 13628-4, Petroleum and natural gas industries – Design and operation of subsea production systems – Part 4: Subsea wellhead and tree equipment. ISO 13628-5, Petroleum and natural gas industries – Design and operation of subsea production systems – Part 5: Subsea control umbilicals. ISO 13628-6, Petroleum and natural gas industries – Design and operation of subsea production systems – Part 6: Subsea production control systems. ISO 13628-7, Petroleum and natural gas industries—Design and operation of subsea production system – Part 7: Completion/workover riser systems. ISO 14693, Petroleum and natural gas industries – Drilling and well servicing equipment. ISO 15156 (all parts), Petroleum and natural gas industries – Material for use in H2s- containing environments. ISO 15579, Metallic materials – Tensile testing at low temperature. ISO 13628-2, Petroleum and natural gas industries – Design and operation of subsea production systems – Part 2: Flexible pipe systems for subsea and marine applications.
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