Kongsberg Offshore as

Fmc Kongsberg Subsea as

Atle Rangnes

Morten Backe

Jon Thoresen

Tore Knoph

Joren Breda

Gunnar Bj&oslash;ru

Tore Andersen

Stein Tore Haavimb

Pete Aston

A device () for replacing equipment, i.e. modules on an installation () on the seabed. The device comprises a box-shaped buoyancy element which has storage spaces () for equipment together with winch devices () assigned to each storage space. During use the device is lowered from a vessel () to the seabed by a crane (), but is stopped a distance from the installation, whereupon the locally provided winches () are used to pull up and position the equipment.

Method and device for replacing equipment on the seabed

An improvement in a side element of a drilling template for wells at sea for extracting hydrocarbons, wherein the side element is connected to a central section of the drilling template and projects horizontally out therefrom. The side element is arranged to carry equipment of various types. According to the invention the side element comprises a coupling section for releasable connection with a coupling section of the equipment.

Side element of a drilling template

A method for mounting a seabed installation including a drilling template and a manifold on a mooring device anchored to the seabed. The mooring device comprises an open guide boring. The drilling template and the manifold are arranged to be suspended separately on, and lowered by a string which extends from an offshore platform. The method includes lowering the manifold and inserting a connected guide post which projects down from the manifold, in a guide hole of the drilling template. Thereafter, interacting sections of the central guide post and the guide hole respectively are made to cause an alignment of the manifold in a fixed rotational position relative to the drilling template during the introduction and before the manifold comes into contact with the drilling template. Finally, the manifold is lowered relative to the guide post after the contact thereof in the guide hole. No use is made of guidelines which extend from the platform to the seabed.

Method and device for mounting of a seabed installation

Growing community of inventors

Asker, Norway

Atle Rangnes