公开(公告)号：US20190283338A1

公开(公告)日：2019-09-19

申请号：US16347525

申请日：2017-10-24

Applicant: SAIPEM S.A.

Inventor： François-Régis PIONETTI ,  Taoufik MAJDOUB ,  Axel SUNDERMANN ,  Jalil AGOUMI

IPC: B29C65/00 ,  B29C65/36

Abstract: A method for assembling two tubes (1, 2) made from thermoplastic materials, that involves welding by heating two applied rotational contact surfaces of two parts of two tubes (1, 2), respectively, arranged end to end or overlapping coaxially (XX′). The method involves induction heating of at least one conductive welding element (4), arranged at the interface (3) between the two contact surfaces, by generating a magnetic field at said conductive welding element or elements, such that the melting of the thermoplastic materials constituting said contact surfaces produces a continuous and sealed weld at said interface on at least one closed loop along the entire perimeter of said interface.

公开(公告)号：US20190285219A1

公开(公告)日：2019-09-19

申请号：US16347515

申请日：2017-10-24

Applicant: SAIPEM S.A.

Inventor： François-Régis PIONETTI ,  Axel SUNDERMANN ,  Taoufik MAJDOUB ,  Jalil AGOUMI

IPC: F16L53/34 ,  H05B6/10

Abstract: A method of heating an inner pipe of a set of coaxial pipes, wherein the inner pipe is heated by induction using an electromagnetic induction coil (5) surrounding the outer pipe coaxially, the coil passing electrical power at a frequency lower than 100 Hz optimized for maximum energy efficiency of Joule effect heating of the inner pipe. A device (8) is also provided for induction heating an inner pipe of coaxial pipes, the device has a) induction heater having comprising at least one electromagnetic induction coil (5) coaxially surrounding the outer pipe of the coaxial pipes, and b) raising means (9) for raising a portion (1-2) of coaxial pipes (1) above the sea bed (13) together with said induction coil(s) (5) surrounding it.

公开(公告)号：US20190242763A1

公开(公告)日：2019-08-08

申请号：US16343354

申请日：2017-10-18

Applicant: SAIPEM S.A.

Inventor： Taoufik MAJDOUB ,  François-Régis PIONETTI ,  Axel SUNDERMANN ,  Jalil AGOUMI

IPC: G01L1/24 ,  E21B17/01

Abstract: A method of monitoring variation in the thrust exerted by at least one buoy exerting traction on an undersea pipe, wherein: 1) the deformation of at least one optical fiber is measured by measuring variation of an optical signal in said fiber extending on the surface or embedded securely in the bulk of at least one of the following support elements: a) the buoy; b) at least a portion of: b1) the length of the tubular wall of the pipe or b2) an anticorrosion coating or a thermally insulating material fastened on the surface of said pipe, on which said buoy exerts traction, and c) an abutment part secured to said pipe or buoy, and on which said buoy exerts said thrust; 2) a variation of said thrust exerted by said buoy is determined as a function of said variation of the optical signal.

公开(公告)号：US20180272616A1

公开(公告)日：2018-09-27

申请号：US15762499

申请日：2016-09-21

Applicant: SAIPEM S.A.

Inventor： François-Régis PIONETTI ,  François LIROLA ,  Taoufik MAJDOUB

IPC: B29C65/16 ,  B29C65/82 ,  B29C65/00 ,  F16L47/02

Abstract: The present invention relates to a method and to a device for assembling together two tubes (1, 2) comprising a tubular junction sleeve and an internal pipe liner tube made of thermoplastic materials by laser welding two contact surfaces of revolution (1-1, 2-1) pressed one against the other at the ends of the tubular sleeve of said liner tube overlapping coaxially.