Design analysis and full scale prototype testing of Auger TLP`s 9-5/8 inch TLP production riser weld-on connector
The design, analysis, and full-scale prototype testing of a special threaded connector for use on the Auger TLP 9-5/8 inch x 0.435 inch wall production risers is summarized in this paper. A flush-bore production riser connector with internal and external metal-to-metal seals, a resilient seal between the external metal-to-metal seal and the external torque shoulder, radial thread interference, and high resistance to fatigue was developed. Finite element analyses and full-scale static, sealability, and fatigue tests verified that the connector satisfied all design requirements. The full-scale fatigue tests verified that the design fatigue curve and fatigue life prediction procedure used yield conservative results and that the fatigue life of the connector greatly exceeds the girthweld. Consideration of manufacturing methods and tolerances along with gauging, in the early stages of the design, resulted in a cost effective connector. The threaded connector was designed for the Auger Tension Leg Platform production risers. However, it is envisioned that the connector will be easily scalable to other riser diameters and wall thicknesses for other TLP`s and has applicability to catenary and top-tensioned risers and subsea flowlines. In addition to resulting in an efficient long life production riser connector design, the design process illustrated the Importance of interaction, between the designers, quality control personnel, machinist, gauge manufacturer, and end user, during the design. All made significant contributions to the success of the design.
- OSTI ID:
- 160720
- Report Number(s):
- CONF-950501--
- Country of Publication:
- United States
- Language:
- English
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