Subsea 7 Do Brasil Servicos Ltda

Flavio Lage Bormann

Luiz Carlos De Lemos Junior

Andre Ramiro Amorim

Daniel Sahonero Rodrigues

Marcelo Aguiar Camara

Marcio Nogueira Barcellos

Nelson Bittar Romeu

Luiz Carlos De Lemos JÚNIOR

Marcelo Aguiar CÂMARA

A method of installing a subsea riser includes placing an elongate negatively-buoyant support on the seabed and, when laying the riser on the seabed, guiding a riser portion onto the support to extend along and be cradled by the support. A hogbend region of the riser is then formed by conferring positive buoyancy on the support to lift the support and the riser portion away from the seabed. An element of the support includes a riser support disposed in a longitudinally extending open-ended gap between buoyancy volumes disposed on opposite sides of the gap. Coupling formations such as hinge portions can couple the element to a like element. When so coupled, the gaps of those elements align to define an upwardly opening, longitudinally extending groove to receive the riser.

Installation of subsea risers

A tensioner system holds back elongate products such as subsea pipelines being laid into water. The system comprises at least one endless circulatory track and an array of rollers supporting the track. Each of the rollers of the array is mounted for rotation around a respective shaft. At least one of the shafts comprises a load pin that is arranged to sense loads applied to the surrounding roller in directions normal to an axis of rotation of that roller.

Monitoring squeeze pressure of track tensioners

Growing community of inventors

Rio de Janeiro, Brazil

Flavio Lage Bormann