Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Recovering used subsea pipelines
A method of recovering a used pipeline from the seabed to the surface comprises attaching a recovery cap to the pipeline at the seabed to surround an end of the pipeline, and then upending at least an end portion of the pipeline underwater suspended beneath the recovery cap. While lifting the upended pipeline toward the surface hydrocarbon contaminants rising buoyantly from the interior and walls of the pipeline are captured within the recovery cap, floating on water within and surrounding the pipeline. The captured contaminants are then conveyed from the recovery cap to a reservoir that is external to the recovery cap. The reservoir may be lifted toward the surface with the upended pipeline for example on a lifting the attached to the recovery cap. The reservoir may expand as it fills with contaminants and as hydrostatic pressure decreases, with gas from the contaminants being vented off.
Recovering used subsea pipelines
A method of recovering a used pipeline from the seabed to the surface comprises attaching a recovery cap to the pipeline at the seabed to surround an end of the pipeline, and then upending at least an end portion of the pipeline underwater suspended beneath the recovery cap. While lifting the upended pipeline toward the surface hydrocarbon contaminants rising buoyantly from the interior and walls of the pipeline are captured within the recovery cap, floating on water within and surrounding the pipeline. The captured contaminants are then conveyed from the recovery cap to a reservoir that is external to the recovery cap. The reservoir may be lifted toward the surface with the upended pipeline for example on a lifting the attached to the recovery cap. The reservoir may expand as it fills with contaminants and as hydrostatic pressure decreases, with gas from the contaminants being vented off.
Recovering used subsea pipelines
ANDRE BRAZ FERREIRA (Autor:in)
27.01.2021
Patent
Elektronische Ressource
Englisch
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