Subsea position control system for elongate articles
OwnerJan Henry Hansen, Eskil Hoyvikinventors
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Abstract
A method of controlling subsea laying of an elongate article is disclosed and includes guiding the article using a submersible vehicle such as an ROV that carries a guide tool. The guide tool has a sleeve through which the article moves axially during laying, while the vehicle applies cross-axial guide forces to the article via the sleeve. Also disclosed is a guide tool including a sleeve through which the article can move axially during laying, and a grab handle whereby a submersible vehicle may hold the tool using a grabber. Alternatively, the guide tool can be attached to or integrated with the vehicle.
Claims38
1-27. (canceled)
A guide tool suitable for subsea laying of an elongate article when used by a submersible vehicle, the tool comprising:
- a sleeve through which the article can slide axially during laying;
- and
- a grab handle for a grabber of a submersible vehicle.
A submersible vehicle carrying a guide tool suitable for subsea laying of an elongate article, the tool comprising a sleeve through which the article can slide axially during laying;
- characterized in that the sleeve can be opened to receive the article and can be closed around the article.
A method of controlling subsea laying of an elongate article, comprising guiding the article using a submersible vehicle to apply guide forces to the article while the article moves relative to the submersible vehicle during laying, wherein the submersible vehicle carries a guide tool having a sleeve through which the article slides axially during laying while the vehicle applies cross-axial guide forces to the article via the sleeve;
- characterized in that the method further comprises opening the sleeve to receive the article and then closing the sleeve around the article.
A method of controlling subsea laying of an elongate article, the method comprising guiding the article using a submersible vehicle to apply guide forces to the article while the article moves relative to the submersible vehicle during laying;
- characterized by:
- monitoring the position of the submersible vehicle with respect to an installation vessel from which the elongate article is launched;
- and
- guiding the installation vessel and the submersible vehicle in coordination by guiding the installation vessel in accordance with the position of the submersible vehicle.
Dependencies are inferred from the claim text.