Petroleo Brasileiro S.a. - Petrobras

Universidade Federal Do Rio Grande Do Sul-ufrgs

Gilnei Reckziegel

Bruno Pinho Dos Reis

Claudio Violante Ferreira

Francisco Francelino Ramos Neto

Jakson Manfredini Vassoler

Jorge Gomes De Melo Medeiros

Rogério José Marczak

Flávio Barroso De Mello

Leonel Echer

The present invention comprises a structure with the same external geometry as a generic hook, but with a topology (internal structuring) that allows a greater distribution of deformation energy to all elements of the part, with load transfer to other less stressed regions. When the present invention is subjected to a loading, said flexible parts deform in a pre-specified manner, transferring part of a loading that would be excessive in a given region to another less loaded region, without any power supply or external interference. In this way, the deformation pattern that occurs in the present invention relieves stresses where they are greatest and, at the same time, provides flexibility (compliance), more adequately distributing coupling loads between the various fastening components.

Compliant component for supporting bend stiffeners

Disclosed is a mechanism for retracting the wedges of a rigid riser support, consisting of a cam holder crown, rods with rollers, a drive spindle, a hydraulic actuator and springs; this system can be driven by ROV or remotely. The system allows the reduction of the need for shallow diving and enables interconnections of rigid risers by keelhauling, promoting competitiveness with the flexible riser solution.

Rigid riser support automation

Growing community of inventors

Rio de Janeiro, Brazil

Gilnei Reckziegel