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    51.
    发明专利
    未知

    公开(公告)号：DE2831732C2

    公开(公告)日：1983-02-17

    申请号：DE2831732

    申请日：1978-07-19

    Applicant: SAIPEM S.P.A., MILANO, IT

    Inventor： ROSA, GIOVANNI ,  BRANDO, PASQUALE, SAN DONATO MILANESE, MILANO, IT

    IPC: B63B35/03 ,  B63B35/04 ,  F16L1/16 ,  F16L1/18 ,  F16L1/20 ,  F16L1/04

    Abstract: A semi-submersible pipelaying watercraft is disclosed, which is particularly suitable for operating under particularly hostile marine environments, said watercraft comprising a composite ramp of special construction for launching the pipe to be laid, a system for determining the craft's position and a control system, governed by electronic computers for automatically positioning the craft. An internal inclinable ramp is coactively combined with an external ramp and the internal ramp is equipped with a locking system and with a displacing system, hydraulic controls being provided for moving both the internal and external ramps. The electronic computers are two and one of them makes the calculations for determining the design parameters, whereas the other computer receives the actual data provided by the several sensors mounted aboard and processes them.

    53.
    发明专利
    未知

    公开(公告)号：DE2912781C3

    公开(公告)日：1981-10-29

    申请号：DE2912781

    申请日：1979-03-30

    Applicant: SAIPEM S.P.A., MILANO, IT

    Inventor： SCODINO, AMBROGIO, S.DONATO, MILANO, IT

    IPC: E02D7/00 ,  E02D27/52 ,  F16L1/12 ,  F16L1/14 ,  F16L1/20 ,  F16L3/02 ,  F16L3/00 ,  F16L1/04

    Abstract: This invention relates to an apparatus for supporting pipes suspended over depressions in the sea bed, including those situated at great depth, and to the method for installing it on the sea bed. The apparatus according to the invention consists of a completely recoverable service module and a support mobile which serves to support the pipe and remains fixed on the sea bed, said modules being connected together in such a manner that they can be separated by simple controls from the depot ship. The method according to the invention comprises in turn a number of operating steps, through which the entire apparatus is initially lowered and positioned on the sea bed and the service module is then recovered by the depot ship.

    54.
    发明专利
    未知

    公开(公告)号：DE7609443U1

    公开(公告)日：1981-07-30

    申请号：DE7609443

    申请日：1976-03-26

    Applicant: SAIPEM S.P.A., MILANO, IT

    IPC: B23K37/053 ,  B23K37/04

    Abstract: An apparatus or "coupler" for use in welding two lengths of pipe to be butt-welded, particularly suitable for welding a section of pipe to the end of a pipeline section being laid on the sea bottom, comprising an elongate body having a first portion and a second portion, which can be attached to respective pipes by means of respective attachment means and sliding means cooperating with the attachment means in order to move the first and second pipes towards each other, whereby, during the welding, not only the two pipes on internally changed to the said portions with their axes aligned, but are also drawn and held together, even when one of the pipes undergoes a longitudinal reciprocating movement.

    58.
    发明专利
    未知

    公开(公告)号：DK140032C

    公开(公告)日：1979-11-05

    申请号：DK133076

    申请日：1976-03-25

    Applicant: SAIPEM S.P.A.

    Inventor： MELI F

    IPC: B23K37/053

    Abstract: An apparatus or "coupler" for use in welding two lengths of pipe to be butt-welded, particularly suitable for welding a section of pipe to the end of a pipeline section being laid on the sea bottom, comprising an elongate body having a first portion and a second portion, which can be attached to respective pipes by means of respective attachment means and sliding means cooperating with the attachment means in order to move the first and second pipes towards each other, whereby, during the welding, not only the two pipes on internally changed to the said portions with their axes aligned, but are also drawn and held together, even when one of the pipes undergoes a longitudinal reciprocating movement.

    60.
    发明专利
    未知

    公开(公告)号：DE2502020B2

    公开(公告)日：1978-06-15

    申请号：DE2502020

    申请日：1975-01-20

    Applicant: SAIPEM S.P.A., MAILAND (ITALIEN)

    Inventor： CASSONE, GIORGIO ,  SCOLARI, FRANCO

    IPC: B63B21/50 ,  G05D1/02

    Abstract: A drilling ship is maintained over a deep sea well in a drilling position defined by an inner circle and an outer circle having the well as their center. The ship is connected to a set of anchors fastened to the sea bed and adapted, when the ship is subjected to the action of external forces tending to change its position and of not more than a predetermined magnitude, to restrain the ship from moving beyond the confines of the inner circle. The ship is equipped with a set of adjustable propellers adapted, in conjunction with the anchors, to position the ship within the confines of the outer circle when the external forces acting on the ship to change its position exceed the predetermined magnitude. The operation of the propellers is controlled by a computer to which values are fed which are determined by detectors of the position of the ship and of external forces acting upon it.

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