The steel catenary riser (SCR) concept has recently been used in almost every new deepwater field development around the world. Shell pioneered the implementation of the SCR concept in 1994 on its Auger tension leg platform (TLP) in 872 m (2860 ft) water depth. Since then, SCRs have been vital to deepwater field developments. Their use has given a new dimension to oil exploration and transportation in water depths where other riser concepts could not tolerate the environmental loads or would have become very costly. SCR designs are very sensitive to floating support platform or vessel motion characteristics to which they are typically attached. In addition to pipe stresses, the main design issue for the SCR concept is fatigue related. There are two main sources for fatigue: random wave fatigue and vortex-induced vibration (VIV) fatigue. The former is due to wave action and the associated platform motion characteristics. The VIV fatigue is mainly due to current conditions. Fracture mechanics assessment is also an essential issue that must be addressed in the design of SCRs. This paper presents a brief history in the use and development of SCRs since the first project implementation on Auger TLP in 1994. The paper also summarizes major steps that must be considered in the design of SCRs and how to explain their behavior in different water depths and environmental conditions. Existing design boundaries for SCRs are discussed with emphasis on the capabilities of new technologies that enable engineers to go beyond these boundaries. Projects with unique SCR features and their implementation are compiled and presented.

Issue Section:
Technical Papers
Keywords:
oil technology, natural gas technology, flexible structures, ocean waves, fatigue, design engineering
Topics:
Design, Fatigue, Pipes, Steel catenary risers, Tension-leg platforms, Vortex-induced vibration, Water, Stress, Pipeline risers, Risers (Casting), Waves, Floating structures, Augers, Fracture mechanics, Gulf of Mexico, Wall thickness
1.
Phifer, E.H., Kopp, F., Swanson, R.C., Allen, D.W., and Langner, C.G, 1994, “Design and Installation of Auger Steel Catenary Risers,” Proc., Offshore Technology Conference, Houston, TX, OTC 7620.
2.
Chaudhury, G., and Kennefick, J., 1999, “Design, Testing and Installation of Steel Catenary Risers,” Proc., Offshore Technology Conference, Houston, TX, OTC 10980.
3.
Serta, O.B., Mourelle, M.M., Grealish, F.W., Harbert, S.J., and Souza, L.F.A., 1996, “Steel Catenary Riser for the Marlim Field FPS P-XVIII,” Proc., Offshore Technology Conference, Houston, TX, OTC 8069.
4.
Ward, E.G., Haring, R.E., and Devlin, P.V, 1999, “Deepwater Mooring and Riser Analysis for Depths to 10,000 Feet,” Proc. Offshore Technology Conference, Houston, TX, OTC 10808.
5.
API PR 2RD, 1998, “Design of Risers for Floating Production Systems (FPSs) and Tension Leg Platforms (TLPs),” 1st Edition.
6.
Shanks, J., and Fang, J., 2000, “Field, Platform Specifics for the Design of Steel Catenary Risers—Fatigue Prediction for Deepwater Applications,” Offshore Magazine, PennWell Publ. Houston, TX, Oct., pp. 50–53.
7.
Vandiver, J.K., and Li, L., 1999, “Shear 7 for Votrex Induced Vibration Response Prediction of Beams or Cables with Slowly Varying Tension in Sheared or Uniform Flow,” User’s Guide, Atlantia Corporation, Version 3.
8.
Mekha, B.B., Mirza, S., and Lang P., 2000, “An Assessment of Fatigue Damage For a Deepwater Steel Catenary Riser,” Proc., of the 19th Int. Conf. Offshore Mechanics and Arctic Engineering, OMAE’00, New Orleans, LA.
9.
Vandiver, J.K., and Gonzalez, E.C., 1997, “Fatigue Life of Catenary Risers Excited by Vortex Shedding,” Proc., 8th Int. Conf. Behavior of Offshore Structures, BOSS 97, Delft, The Netherlands.
10.
API RP 2A, 1993, “Planning, Designing and Constructing Fixed Offshore Platforms,” 20th Edition.
11.
Braga, V., Bomfimsliva, C., Critsinelis, A., Monteiro, C., and Azevedo, F., 2000, “Deepwater Steel Pipelines and SCRs Installation,” Proc. 3rd Deepwater Pipeline and Riser Technology Conference, Houston, TX.
12.
Edwards, R.Y., Filho, R.Z., Hennessy, W.F., Campman, C.R., and Bailon, H., 1999, “Load Monitoring at the Touchdown Point of the First Steel Catenary Riser Installed in a Deepwater Moored Semisubmersible Platform,” Proc., Offshore Technology Conference, Houston, TX, OTC 10975.
13.
Quitiiou, V., Pionetti, F., and Hatton, S., 2000, “Two-Component Pipe-In-Pipe Avoids Dynamic Problems, Costs,” Offshore Magazine, PennWell Publication, Houston, TX, Oct., pp. 118.
14.
Remery, J., and Coutarel, A., 2000, “Integration of Flexible and Rigid Pipe in Ultra Deep Water Riser Systems,” Proc., Advances in Riser Technologies Conference, Aberdeen, Scotland.
15.
Nordsve, N.T., 2000, “Steel Risers for a Turret Moored FPSO in Deep Water Harsh Environment.”
16.
Cameron, G.M., 2000, “Hybrid Steel Catenary Risers for Roncador P36,” Proc. Deep Offshore Technology Conference, New Orleans, LA.
17.
Silva, R., Braga, V., Moraes, M., and Santos, J., 2000, “Reel/J-Lay Method—The New Technology of Petrobras for Steel Catenary Risers Installation in Deepwater,” Proc., Deep Offshore Technology Conference, New Orleans, LA.
18.
Bell, M., 2000, “Fatigue Performance of Steel Catenary Risers Installed by Reel Ship,” Proc. 3rd Deepwater Pipeline and Riser Technology Conference, Houston, TX.
19.
Harland, M., 1999, “Reeled Pipe for Dynamic Riser Applications,” Proc., Offshore Technology Conference, Houston, TX, OTC 10978.
Copyright © 2001
 by ASME
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