Offshore platform deck removal method

    公开(公告)号:US12012707B2

    公开(公告)日:2024-06-18

    申请号:US17045111

    申请日:2019-04-02

    Applicant: SAIPEM S.P.A.

    Abstract: A method for lifting a payload of an offshore platform is provided. The offshore platform comprises a support structure supporting the payload. The payload includes a main deck and a column directly connected to the support structure, the column supporting the main deck. The method includes coupling a plurality of tension rods to a lower lifting device, having a welding surface weldable to a welding portion of the column and an upper lifting device having a coupling interface such that the plurality of tension rods connect the lower lifting device and the upper lifting device. The plurality of extendable tension rods can extend along a rod direction between the lower lifting device and the upper lifting device to separate the payload from the support structure. At least some of the tension rods of the plurality of tension rods are pre-tensioned to exert a compressive action to the payload.

    SYSTEM AND METHOD FOR LEVELLING AND GRIPPING A JACKET LEG INTO A HOLLOW FOUNDATION PILE

    公开(公告)号:US20220333328A1

    公开(公告)日:2022-10-20

    申请号:US17621027

    申请日:2020-06-19

    Applicant: SAIPEM S.P.A.

    Abstract: A system for levelling and gripping a jacket leg into a hollow foundation pile has a levelling assembly for adjusting the longitudinal axis of a jacket leg partially inserted in a hollow foundation pile with an actuation group arranged about the jacket leg and configured to exert a force parallel to the longitudinal axis between the upper edge of the hollow foundation pile and the jacket leg and selectively attachable to the jacket leg and recoverable for further use in another levelling assembly; and a gripping assembly for locking the jacket leg in a designated position with respect to the hollow foundation pile once leveled.

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