Steel Catenary Risers

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Our high-quality, high-strength steels for SCR allow for a reduction in the line's wall thickness and in the weight of the column.


 

stringent ID end tolerances for scr

A Steel Catenary Riser (SCR) is a prolongation of a sub-sea pipeline attached to a floating production structure in a catenary shape. SCR lines are commonly subjected to fatigue loads, particularly in the touchdown zone, due to platform movements, Vortex Induced Vibrations (VIV) and sea currents.

In order to avoid any excessive stress concentration, the oil and gas industry pays particular attention to the welding process of SCRs in order to minimize any possible misalignment between pipe ends (Hi/Lo). To facilitate this operation, Tenaris provides stringent ID end tolerances through specific processes such as Cold End Sizing and Machining and offers high accuracy LEMS.

Any excessive weight in the production system could impact on the required dimensions of the floating production structure. We produce high-quality high-strength steels of up to X70 Sour Service and up to X100 Non Sour, allowing the wall thickness of the line to be reduced and hence reducing the weight of the column. Through our industrial system, we apply stringent quality control and state-of-the-art non-destructive testing to guarantee high surface quality and defect-free materials, which are basic issues in fatigue-affected material and during AUT control.

PROVEN sub-sea EXPERIENCE

Tenaris has had considerable experience worldwide in major challenging deep-water projects:

Gulf of Mexico

  • Independence
  • Thunder Horse
  • Tahiti
  • Deimos

Far East

  • Gumusut

West Africa

  • Bonga
  • Dalia
  • AKPO
  • Kizomba C