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AssigneeSubsea 7 do Brasil Servicos Ltda
InventorsAndre Ramiro Amorim, Davi Couto Neves Junior, Alberto Lima Dos Santos, Mauricio Suarez de Oliveira
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A method of installing a wave-configuration subsea riser of unbonded flexible pipe comprises lowering the riser progressively into the sea from an installation vessel while suspending an elongate clump weight in a catenary shape that comprises first and 5 second limbs extending upwardly from a conjoining bottom portion. An upper end of the first limb, at a distal end of the clump weight, is attached to the riser and an upper end of the second limb, at a proximal end of the clump weight, is suspended from a winch or crane of the vessel. While lowering the riser from the vessel, the weight load applied to the riser by the clump weight is controlled by adjusting the relative lengths of the first 0 and second limbs of the clump weight.
A method of installing a wave-configuration subsea riser, the method comprising:
Dependencies are inferred from the claim text.