Author(s)

Antonio Carlos Fernandes

Abstract

— The hyperbolic cosine equation that represents the behavior of heavy non-extensible risers are supposed to be well. In reality however, its use in practice is not so wide spread unless for very specific cases, when the hyperbolic cosine are invertible. This work formulates 14 (fourteen) typical problems to be solved by an up-to-date spread-sheet program, together with the so-called departure problems. The used spread-sheet is now-a-days very common and it allows for automatic interactive solutions and macro command structures, besides graphical illustrations. All of these capabilities are used to solve the cited catenary problems. Asymptotic solutions for the departure problem are also presented. INTRODUCTION PETROBRAS has installed many kilometers of f

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