公开(公告)号：US12055257B2

公开(公告)日：2024-08-06

申请号：US17551122

申请日：2021-12-14

Applicant: Subsea 7 Limited

Inventor： Arnbjorn Joensen ,  Nwabueze Samuel Ogbodo ,  Shona Margaret Manson ,  Emma Claire Taylor ,  Dwayne Hewitt Hopkins ,  John Joseph Ryan

IPC: F16L1/16 ,  F16L1/24 ,  F16L55/07

CPC classification number: F16L55/07 ,  F16L1/166 ,  F16L1/24

Abstract: A method of dewatering a subsea pipeline bundle assembly before lifting the assembly from the seabed and an elongate carrier pipe comprising at least one internal fall that slopes downwardly towards a drainage outlet and at least one venturi formation that is aligned with the drainage outlet. The method comprises adding discrete buoyancy to the elongate carrier pipe that elevates the carrier pipe disposed between drainage outlets of the assembly. Each elevated portion defines inclined falls that slope downwardly in opposed longitudinal directions toward the respective outlets. Water within the carrier pipe drains down the falls toward the outlets. Injecting a dewatering fluid into the carrier pipe promotes expulsion of water from the pipe through the outlets by downward displacement of the water. Drainage may be assisted by a venturi effect driven by accelerating the flow of the dewatering fluid at a location in line with an outlet.

公开(公告)号：US11867322B2

公开(公告)日：2024-01-09

申请号：US17612678

申请日：2020-05-20

Applicant: Equinor Energy AS

Inventor： Håvar Ilstad ,  Erik Levold ,  Geir Endal ,  Kjell Einar Ellingsen ,  Bjørgulf Haukelidsæter Eidesen

IPC: F16L1/26 ,  E21B43/01 ,  E21B43/013 ,  F16L1/16 ,  F16L1/23

CPC classification number: F16L1/26 ,  E21B43/0107 ,  E21B43/0135 ,  F16L1/165 ,  F16L1/23

Abstract: A method of connecting a conduit to a subsea structure is provided. In the disclosed method, a tensioning member is provided on the conduit and attached to the conduit at two locations proximate a first end of the conduit. The tensioning member is used to maintain a curvature formed in the conduit between the two locations e.g. by deflecting a portion of the conduit. A first end of the conduit is engaged with a guide assembly provided adjacent to the subsea structure, and tension in the tensioning member is released to adjust the axial position of the first end of the conduit to enable direct connection between the conduit and the subsea structure. A method of disconnecting a conduit from a subsea structure, and a system for connecting a conduit to a subsea structure are also provided.

公开(公告)号：US20230407992A1

公开(公告)日：2023-12-21

申请号：US18035398

申请日：2021-10-07

Applicant: Equinor Energy AS

Inventor： Erik LEVOLD ,  Håvar ILSTAD ,  Marie Finstad OPGÅRD

IPC: F16L1/26 ,  F16L1/16

CPC classification number: F16L1/26 ,  F16L1/16

Abstract: A method of installing a subsea pipeline having a direct tie-in between a first section of the pipeline and a subsea structure, wherein, after installation, the first section is located at a tie-in position. The method comprises: laying at least a portion of the pipeline from a laying vessel, the at least a portion of the pipeline including the first section and a second section of the pipeline, such that the first section is beyond the tie-in position in the laying direction, and the first section and the tie-in position are beyond the second section in the laying direction; either before, during or after said laying, configuring the second section such that bending will be preferentially induced in the second section of the at least a portion of the pipeline when the first section is pushed or pulled back to the tie-in position; pushing or pulling the first section back to the tie-in position, wherein, responsive to said pushing or pulling, bending is preferentially induced in the second section.

公开(公告)号：US20230115844A1

公开(公告)日：2023-04-13

申请号：US18080946

申请日：2022-12-14

Applicant: C-Dive, LLC

Inventor： Edward Trahan ,  Philip Thibodeaux ,  Robert Champagne ,  Marc Olivier

IPC: F16L1/16 ,  E02F5/00 ,  E02F7/00 ,  E02F5/02 ,  F16L1/15 ,  E02F3/92 ,  F16L1/20 ,  E02F3/88

Abstract: The present invention relates to a system and method for uncovering and removing pipeline from the seafloor using a subsea trenching system using pressurized water to uncover pipe, a subsea shear carried by a barge to cut lengths of the pipeline, and a grapple carried by a barge to lift cut lengths of pipeline for placement on a pipe haul and recovery barge.

公开(公告)号：US20230112210A1

公开(公告)日：2023-04-13

申请号：US18076386

申请日：2022-12-06

Applicant: Subsea 7 do Brasil Servicos Ltda

Inventor： Nelson Bittar Romeu ,  Andre Ramiro Amorim ,  Marcio Nogueira Barcellos ,  Daniel Sahonero Rodrigues ,  Flavio Lage Bormann

IPC: E21B17/01 ,  F16L1/14 ,  F16L1/16 ,  F16L1/24

Abstract: A method of installing a subsea riser comprises placing an elongate negatively-buoyant support on the seabed and, when laying the riser on the seabed, guiding a riser portion onto the support to extend along and be cradled by the support. A hogbend region of 5 the riser is then formed by conferring positive buoyancy on the support to lift the support and the riser portion away from the seabed. An element of the support comprises a riser support disposed in a longitudinally-extending open-ended gap between buoyancy volumes disposed on opposite sides of 0 the gap. Coupling formations such as hinge portions can couple the element to a like element. When so coupled, the gaps of those elements align to define an upwardly-opening, longitudinally-extending groove to receive the riser.

公开(公告)号：US20220341509A1

公开(公告)日：2022-10-27

申请号：US17239030

申请日：2021-04-23

Applicant: C-Dive, LLC

Inventor： Edward Trahan ,  Philip Thibodeaux ,  Robert Champagne ,  Marc Olivier

IPC: F16L1/16 ,  E02F5/00 ,  E02F7/00 ,  E02F5/02 ,  E02F3/88 ,  E02F3/92 ,  F16L1/20 ,  F16L1/15

Abstract: The present invention relates to a system and method for uncovering and removing pipeline from the seafloor using a subsea trenching system using pressurized water to uncover pipe, a subsea shear carried by a barge to cut lengths of the pipeline, and a grapple carried by a barge to lift cut lengths of pipeline for placement on a pipe haul and recovery barge.

公开(公告)号：US11332904B2

公开(公告)日：2022-05-17

申请号：US17252107

申请日：2019-07-17

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Long Yu ,  Yunrui Han ,  Qing Yang

IPC: E02D1/02 ,  F16L1/16 ,  B63C11/52 ,  E02F5/10

Abstract: The present invention provides a lateral and continuous measurement method for soil parameters in a soft soil field. The method mainly comprises the following measurement steps: arranging soil strength measuring apparatuses at the front end of a towing apparatus; arranging soil strain softening relationship measuring apparatuses at the bottom end of the towing apparatus; and measuring interface friction parameters between the soil and a structure. The towing apparatus actively or passively moves in a soft soil layer to ensure that the towing apparatus partially penetrates into the to-be-measured soil layer during movement; and the penetration depth of the towing apparatus is controlled by adjusting counterweight above the towing apparatus and a towing angle.

公开(公告)号：US20220134492A1

公开(公告)日：2022-05-05

申请号：US17310251

申请日：2019-11-12

Applicant: SAIPEM S.A.

Inventor： Liborio MOCERI

IPC: B23K37/053 ,  F16L1/16 ,  F16L1/20

Abstract: A device for jointing elements of a pipeline for the transport of fluids includes a support structure on which a pipeline section to be jointed is intended to be mounted, two parallel fixed rails, four plates each comprising a first element capable of cooperating with a rail and a second element fixed on the support structure. The first and the second elements of each plate is linked by a first cylinder aligned along a first adjustment axis and a second cylinder aligned along a second adjustment axis, and a system for controlling the cylinders of the plates to achieve movements along the first and second adjustment axes and capable of cooperating with a system for guiding in translation the support structure along the longitudinal axis of the pipeline section to allow jointing of the pipeline section and the pipeline element.

公开(公告)号：US11274769B2

公开(公告)日：2022-03-15

申请号：US16605624

申请日：2017-12-08

Applicant: SIEMENS GAMESA RENEWABLE ENERGY A/S

Inventor： Johnny Soerensen

IPC: F16L1/16 ,  F16L3/233 ,  H02G1/10 ,  F16L1/20 ,  F16L1/18 ,  F16L9/19

Abstract: Provided is a method of laying empty pipes on the seabed, which method includes arranging a plurality of empty pipes in a bundle; arranging a bundle-strengthening element in a cavity defined by the pipes of the bundle; binding the bundle; and lowering the bundle to the seabed.

公开(公告)号：US20220003336A1

公开(公告)日：2022-01-06

申请号：US17365146

申请日：2021-07-01

Applicant: Siemens Gamesa Renewable Energy A/S

Inventor： Johnny Soerensen

IPC: F16L1/16 ,  H02G1/10

Abstract: A method for installing a gas transportation arrangement on a seabed between an offshore facility and at least one further facility, wherein the gas transportation arrangement includes as components at least one gas transportation tube and at least one weight, wherein the gas transportation tube and the weight are coupled prior to lowering the gas transportation arrangement to the seabed, wherein an electrical power cable and/or a further tube at least party filled with a liquid and/or solid medium is used as weight extending almost entirely over the distance bridged by the gas transportation tube.