Title:
INSTALLATION OF SUBSEA RISERS
Document Type and Number:
WIPO Patent Application WO/2020/051664
Kind Code:
A3
Abstract:
A method of installing a subsea riser comprises 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 5 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 comprises a riser support disposed in a longitudinally-extending open-ended gap between buoyancy volumes disposed on opposite sides of 0 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.
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| WO/2021/232131 | SUPPORT FOR RISERS AND METHOD FOR COUPLING AND UNCOUPLING |
| WO/2005/103436 | MARINE RISER TOWER |
| WO/2021/011021 | HYRBID COILED TUBING SYSTEM |
Inventors:
BITTAR ROMEU NELSON (BR)
RAMIRO AMORIM ANDRE (BR)
NOGUEIRA BARCELLOS MARCIO (BR)
SAHONERO RODRIGUES DANIEL (BR)
LAGE BORMANN FLAVIO (BR)
RAMIRO AMORIM ANDRE (BR)
NOGUEIRA BARCELLOS MARCIO (BR)
SAHONERO RODRIGUES DANIEL (BR)
LAGE BORMANN FLAVIO (BR)
Application Number:
PCT/BR2019/050391
Publication Date:
May 07, 2020
Filing Date:
September 12, 2019
Export Citation:
Assignee:
SUBSEA 7 DO BRASIL SERVICOS LTDA (BR)
International Classes:
E21B17/01
Foreign References:
| GB2393426A | 2004-03-31 | |||
| GB2520906A | 2015-06-03 | |||
| US6402431B1 | 2002-06-11 |
Attorney, Agent or Firm:
DANNEMANN, SIEMSEN, BIGLER & IPANEMA MOREIRA (BR)
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