Petroleo Brasileiro S.a. - Petrobras

Jose Mauricio Teixeira Da Gama Lima

Francisco Edward Roveri

Flavio Barroso De Mello

Pedro Luiz Ferreira Mendes

Ricardo Pires Mendes Peixoto

Jose Abreu E Silva Filho

The present invention pertains to the technical field of oil and gas; more specifically to the field of risers and flow line connections to offshore structures, and describes a pull-in cable deflector system in keelhauling of rigid risers comprising: a deflector assembly including a deflector device housed in a structural block, a sliding structure, at least two rails. The deflector device installed in the structural block is moved through a sliding structure on rails installed forward of the URB to the different pull-in or pull-out positions in keelhauling of rigid risers. The structural block is slidably mounted on a base frame by means of a system of sliding supports to perform a first adjustment of the transverse distance from the deflector device to the URB. The deflector device is then rotated around the vertical line depending on the azimuth of the support tube. A second adjustment of the transverse distance of the deflector device is performed during the pull-in operation.

Pull-in system and method of keelhauling rigid risers using a deflector device and double layer support tube

A freestanding hybrid riser system (FHRS) and a method of installation which makes it possible to use vessels that are more available on the world market. The invention relates to a top riser assembly (TRA) having multiple, offset connection points such that a first bending moment is applied to the TRA by a buoyant unit, and an opposing bending moment is applied to the TRA by a flexible jumper.

Freestanding hybrid riser system

This invention relates to an improved freestanding hybrid riser system (FHRS) with new component configurations at the interfaces at the top () and bottom () ends of the vertical section of the riser () in comparison with configurations already installed by the industry. This proposed invention also describes a method for installation of the proposed FHRS which makes it possible to use vessels which are more available on the world market and therefore to bring about improved technical and operational gains.

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Rio de Janeiro, Brazil

Jose Mauricio Teixeira Da Gama Lima