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公开(公告)号：US20230112210A1
公开(公告)日：2023-04-13
申请号：US18076386
申请日：2022-12-06
发明人： Nelson Bittar Romeu , Andre Ramiro Amorim , Marcio Nogueira Barcellos , Daniel Sahonero Rodrigues , Flavio Lage Bormann
摘要： 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.
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公开(公告)号：US11565932B2
公开(公告)日：2023-01-31
申请号：US16750152
申请日：2020-01-23
发明人： Simon Bishop , Paul Staton
IPC分类号： B67D9/00 , F16L1/15 , F16L1/20 , F16L1/24 , G05D7/06 , H04B13/02 , B63B22/02 , B63B27/34 , E21B41/00 , F16L11/133
摘要： A system for fluid transfer is disclosed and includes a floatable buoy, an underwater hose, a plurality of underwater node units and circuitry. The underwater hose has a first end coupled to the floatable buoy and a second end. The plurality of underwater node units distributed along the length of the underwater hose and configured to generate positioning signals. The circuitry is configured to determine a relative distance between each of the plurality of undersea node units based on the generated positioning signals to generate a plurality of relative distances.
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公开(公告)号：US20210301946A1
公开(公告)日：2021-09-30
申请号：US17209550
申请日：2021-03-23
申请人： SHELL OIL COMPANY
摘要： A method for controlling buckling in subsea pipelines involves identifying spaced-apart sections of a subsea pipeline suitable for controlled lateral buckling. Sets of buoyancy modules are installed at each spaced-apart section and are selected to support the spaced-apart sections of the subsea pipeline in a neutrally buoyant condition at the seafloor when the subsea pipeline is in service. Any buckling caused by thermal expansion of the subsea pipeline is distributed to two or more of the spaced-apart sections, causing the two or more spaced-apart sections to deflect laterally along the seafloor outwardly from an initial as-laid position.
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公开(公告)号：US20200156926A1
公开(公告)日：2020-05-21
申请号：US16750152
申请日：2020-01-23
发明人： Simon Bishop , Paul Staton
摘要： A system for fluid transfer is disclosed and includes a floatable buoy, an underwater hose, a plurality of underwater node units and circuitry. The underwater hose has a first end coupled to the floatable buoy and a second end. The plurality of underwater node units distributed along the length of the underwater hose and configured to generate positioning signals. The circuitry is configured to determine a relative distance between each of the plurality of undersea node units based on the generated positioning signals to generate a plurality of relative distances.
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公开(公告)号：US10371288B1
公开(公告)日：2019-08-06
申请号：US16166613
申请日：2018-10-22
申请人： Chevron U.S.A. Inc.
摘要： Disclosed are an apparatus and method for supporting a portion of a pipeline for conveying produced fluids in a subsea environment to facilitate movement of the portion of the pipeline over a seabed in response to stresses on the pipeline. The portion of the pipeline is supported on a rigid support structure having rotatable components that rotate about an axle attached to the rigid support structure such that the rigid support structure and the portion of the pipeline can move over the seabed. The apparatus and method eliminate the need for costly mud mats or suction piles to accommodate movement in the subsea pipeline and prevent pipeline walking. By facilitating movement of the portion of the pipeline, lateral deformation and axial displacement of the portion of the pipeline can be reduced or eliminated.
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公开(公告)号：US20180252334A1
公开(公告)日：2018-09-06
申请号：US15756308
申请日：2016-08-16
CPC分类号： F16L1/24 , E21B17/012 , F16B2/065
摘要： A clamping arrangement 10 of a buoyancy clamp assembly. The arrangement 10 includes three identical arcuate members 12 engageable together to define a ring. Each of the arcuate members 12 has three discrete resilient members 14 engageable on for instance a pipe 68. Engagement members 42 are provided extendable between adjacent pair of arcuate members 12 to prevent relative twisting of adjacent arcuate members 12.
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7.发明申请公开(公告)号：US20180087691A1
公开(公告)日：2018-03-29
申请号：US15790985
申请日：2017-10-23
申请人： Michael W. N. Wilson
发明人： Michael W. N. Wilson
摘要： A method for governing the elevation, attitude and structural integrity of a pressure-containing vessel in a body of liquid counterbalances flotation and incompressible ballast mediums against each other in separate serial compartments. Varying the quantity of incompressible ballast medium allows control of the elevation and attitude of the vessel. If the flotation medium is compressible, varying the quantity of flotation medium allows control of the ambient pressure of the vessel. The method facilitates floating and towing and laying of an undersea pipeline on, to and at a deep water site.
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公开(公告)号：US20180073665A1
公开(公告)日：2018-03-15
申请号：US15551889
申请日：2016-02-11
申请人： Acergy France SAS
发明人： Stephane Bombino
摘要： A method lowers a hollow structure through water and installs that structure at a subsea location. The structure has an internal space containing a ballast material such as sea salt that is substantially denser than water. Upon being lowered with the aid of the ballast material to a subsea destination, the structure is anchored at that destination. Then, water is introduced into the internal space to dissolve, suspend or dilute the ballast material. Thus dissolved, suspended or diluted, the ballast material is evacuated or dispersed from the internal space in a liquid or fluidised form. For example, a solution or suspension of the ballast material can be entrained in a flushing flow of water through and from the internal space. The internal space is then available to perform another, primary function in subsea operation of the structure, for example as a flowline to convey oil or gas.
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公开(公告)号：US20180016852A1
公开(公告)日：2018-01-18
申请号：US15718603
申请日：2017-09-28
CPC分类号： E21B17/012 , E21B17/1078 , E21B33/14 , F16L1/24
摘要： A flotation system includes one or more floatation modules, each having a first section and a second section, each having an internal core made of a buoyant material. The first section includes two end faces and a projection extending from one of the end faces. The projection has a contoured profile. The second section includes two end faces and a reciprocal recess in one of the end faces. The end faces of the first section engage the end faces of the second section such that the projection engages the reciprocal recess in a mating engagement. The outer surface of the flotation module include one or more grooves providing a pathway for the flow of circulation fluid. The floatation system may be attached to a tubular string during inner string cementing operations to reduce the load applied to the platform.
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公开(公告)号：US20180010713A1
公开(公告)日：2018-01-11
申请号：US15546225
申请日：2016-02-22
申请人： Statoil Petroleum AS
发明人： Geir ENDAL , Jens HAUGEN
摘要： A method and apparatus are provided for laying pipelines. The apparatus is attached to a portion of a pipeline and includes a tensioning member and a buoyancy element attached to a mid-portion of the tensioning member. When the buoyancy element is submerged, the buoyancy force tensions the tensioning member, and the pipeline will take the intended deflected shape to follow seabed depressions.
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