Abstract:
Electrical high voltage lead-in comprising an insulating member (3) and at least one conductor member (4) extending through the insulating member (3), and an annular restraining member (2) peripherally encompassing the insulating member (3), wherein the members (2, 3, 4) are separately prefabricated. The members (2, 3, 4) are assembled by reciprocal shrinkage fit between the conductor member (4) and the insulating member (3) respectively on the one hand, and between the insulating member (3) and the retraining member (2) on the other hand. The conductor member(s) consists mainly of El-copper.
Abstract:
Pipe system for subsea installations for offshore production or processing of hydrocarbons, for interconnection of or internal connections in functional units, such as Xmas trees (1) and manifold modules (2), where a pipe connection comprises communicating pipe branches (5,7,8) which run with mutual angle deviation or parallel to each other. A pipe branch (5) is provided with a bellows device (11) for obtaining a certain possibility of movement of the pipe branch, and a second pipe branch (7) is also provided with bellows device (12) for obtaining a certain possibility of movement of the second pipe branch (7).
Abstract:
Pipe system for subsea installations for offshore production or processing of hydrocarbons, for interconnection of or internal connections in functional units, such as Xmas trees (1) and manifold modules (2), where a pipe connection comprises communicating pipe branches (5,7,8) which run with mutual angle deviation or parallel to each other. A pipe branch (5) is provided with a bellows device (11) for obtaining a certain possibility of movement of the pipe branch, and a second pipe branch (7) is also provided with bellows device (12) for obtaining a certain possibility of movement of the second pipe branch (7).
Abstract:
Method for protecting subsea installations against cooling which leads to hydrate formation, in particular during production halts. This is achieved by thermally isolating portions of the installation (1) against the surrounding water (2), and particularly by completely encompassing the subsea installation (1) by means of a cap (3) which seals against the surrounding water (2). The cap (3) comprises several elements of which each separately can be exposed to cooling and internal hydrate formation. The invention also comprises a thermally isolating apparatus, adapted for protecting subsea installations (1) against cooling, which involves a risk for hydrate formation. An apparatus (3,9) for implementing the method comprises a relatively tight-fitting cap (3) which encompasses at least two of the elements to be protected from cooling. Thus, the water inside the cap (3) is kept separately from the surrounding water (2) and evenly distribute the heat energy present under the cap (3) to all the elements encompassed by said cap.