METHOD AND APPARATUS FOR ACTIVE HEAVE COMPENSATION

World Intellectual Property Organization Patent

APP PUB NO WO-2008068445-A1
SERIAL NO

PCTGB2006050430

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Abstract

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Methods and apparatuses for active heave compensation, the method, in certain aspects, including the steps of: (a) measuring with a measurement device (44) the heave of a vessel (10) and outputting a heave signal representative thereof; (b) using said heave signal to compensate for said heave by moving a connection device (20) relative to said vessel (10) as a function of said heave signal, whereby movement due to said heave of a load attached to said vessel via the connection device is reduced; said heave signal comprising errors induced by said measurement device (44) whereby accuracy of said compensation is reduced; (c) processing said heave signal so as to reduce said errors and outputting an adjusted heave signal; and (d) using said adjusted heave signal to move said connection device (20) to compensate for said heave.

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Patent Owner(s)

Patent OwnerAddress
VARCO INTUS

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Inventor(s)

Inventor Name Address
KYLLINGSTAD AGE ALGARD

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