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DK201070078A - Installation of flexible riser systems - Google Patents

Installation of flexible riser systems Download PDF

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Publication number
DK201070078A
DK201070078A DKPA201070078A DKPA201070078A DK201070078A DK 201070078 A DK201070078 A DK 201070078A DK PA201070078 A DKPA201070078 A DK PA201070078A DK PA201070078 A DKPA201070078 A DK PA201070078A DK 201070078 A DK201070078 A DK 201070078A
Authority
DK
Denmark
Prior art keywords
riser
chain
seabed
anchor
risers
Prior art date
Application number
DKPA201070078A
Other languages
Danish (da)
Inventor
Svein Loseth
Original Assignee
Statoilhydro Asa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Statoilhydro Asa filed Critical Statoilhydro Asa
Publication of DK201070078A publication Critical patent/DK201070078A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01Risers
    • E21B17/015Non-vertical risers, e.g. articulated or catenary-type

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Supports For Pipes And Cables (AREA)

Claims (7)

1. Montering af fleksible stigrør, kabler og/eller lignende (i det følgende kaldt stigrør), hvor hvert stigrør omfatter en øvre del der strækker sig som en kædelinje nedad og væk fra en position ved havoverfladen, en mellemliggende del med et længdeinterval med flydeindretninger der er anbragt på eller fastgjort til stigrøret således at stigrøret i længdeintervallet opnår en positiv flydeevne, og den mellemliggende del antager en konkav form der er rettet mod havbunden, og en nedre del der strækker sig som en kædelinje videre ned og væk fra positionen ved havoverfladen til havbunden og en fastgørelsesindretning der er anbragt på hvert stigrør i en position mellem havbunden og længdeintervallet, kendetegnet ved at monteringen endvidere omfatter: en kæde der er anbragt fra hver fastgørelsesindretning til havbunden, hvor den øvre ende af kæden er fastgjort til fastgørelsesindretningen, og en nedre ende af kæden er fastgjort til et fastgørelsespunkt anbragt på havbunden, hvor kædens vægt er tilpasset således at et antal kædeled under normal drift bliver løftet fra havbunden, og et antal kædeled ligger på havbunden, hvor antallet varierer afhængigt af belastningen.1. Mounting of flexible risers, cables and / or the like (hereinafter referred to as risers), wherein each risers comprise an upper portion extending as a chain line downward and away from a position at the sea surface, an intermediate portion having a length interval with floatation devices arranged on or attached to the riser so that the riser in the longitudinal range achieves a positive flowability, and the intermediate portion assumes a concave shape directed to the seabed and a lower portion extending as a chain line further down and away from the position at the sea surface to the seabed and a fastener arranged on each riser at a position between the seafloor and the length interval, characterized in that the assembly further comprises: a chain disposed from each fastener to the seabed, the upper end of the chain being secured to the fastener; and a the lower end of the chain is secured to a point of attachment on the seabed, where the weight of the chain is adjusted so that during normal operation a number of warp joints are lifted from the seabed and a number of warp joints lie on the seabed where the number varies depending on the load. 2. Montering ifølge krav 1, kendetegnet ved at hver kæde er indrettet således at den under normal drift antager en kædelinjeform fra fastgørelsesindretningen til havbunden, hvor kædelinjeformen ligger under men i det væsentlige parallelt med den nedre del af stigrøret.Assembly according to claim 1, characterized in that each chain is arranged so that during normal operation it assumes a chain line shape from the attachment device to the seabed, the chain line shape being below but substantially parallel to the lower part of the riser. 3. Montering ifølge krav 1, kendetegnet ved at fastgørelsesindretningen er en klampe.Installation according to claim 1, characterized in that the fastening device is a clamp. 4. Montering ifølge krav 1, kendetegnet ved at fastgørelsespunktet er et anker som normalt ikke absorberer nogen belastning da et antal kædeled altid hviler på havbunden under normal drift.Mounting according to claim 1, characterized in that the attachment point is an anchor which normally does not absorb any load since a number of chain links always rest on the seabed during normal operation. 5. Montering ifølge krav 1, kendetegnet ved at en udstrækning af retningen af den øvre del af kæden og en udstrækning af retningen af stigrøret i positionen ved fastgørelsesindretningen i det væsentlige når længdeintervallet med flydeindretninger, således at den resulterende kraft fra spænding i stigrøret ved fastgørelsesindretningen og spænding fra kæden i det væsentlige når længdeintervallet.Assembly according to claim 1, characterized in that an extension of the direction of the upper part of the chain and an extension of the direction of the riser in the position of the fastener substantially reaches the longitudinal interval with flow devices, so that the resulting force from tension in the riser of the fastener and tension from the chain essentially reaches the length interval. 6. Montering ifølge krav 1, kendetegnet ved at flere stigrør er anbragt parallelt eller i det væsentlige parallelt med et anker anbragt mellem hvert stigrør, således at hvert anker der er placeret mellem to stigrør, har to kæder fastgjort til sig, en til hvert nabostillet stigrør.Mounting according to claim 1, characterized in that several riser pipes are arranged parallel or substantially parallel to an anchor arranged between each riser pipe, so that each anchor placed between two riser pipes has two chains attached to one another, one to each adjacent position. risers. 7. Montering ifølge krav 1, kendetegnet ved at N stigrør er anbragt i det væsentlige parallelt, der er anbragt N+l ankre, hvor hvert anker er anbragt mellem hvert stigrør, og et anker er anbragt yderst på hver yderside af de i det væsentlige parallelle stigrør, og der er anbragt 2N kæder, hvor hvert anker mellem to stigrør har to kæder fastgjort til sig, en til hvert nabostillet stigrør, og hvert af de yderste stigrør har en kæde fastgjort til det respektive anker på ydersiden af de i det væsentlige parallelle stigrør.Mounting according to claim 1, characterized in that N riser is arranged substantially parallel to the N + 1 anchors, each anchor being arranged between each riser and an anchor located at the outer side of the substantially parallel riser tubes, and 2N chains are arranged, each anchor between two riser tubes having two chains attached to it, one to each adjacent riser tubing, and each of the outermost risers having a chain attached to the respective anchor on the outside of the substantially parallel risers.
DKPA201070078A 2008-04-29 2010-03-01 Installation of flexible riser systems DK201070078A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20082053A NO20082053L (en) 2008-04-29 2008-04-29 Arrangement of flexible risers
PCT/NO2009/000155 WO2009139636A1 (en) 2008-04-29 2009-04-24 Assembly of flexible riser systems

Publications (1)

Publication Number Publication Date
DK201070078A true DK201070078A (en) 2010-03-01

Family

ID=41318878

Family Applications (1)

Application Number Title Priority Date Filing Date
DKPA201070078A DK201070078A (en) 2008-04-29 2010-03-01 Installation of flexible riser systems

Country Status (3)

Country Link
DK (1) DK201070078A (en)
NO (1) NO20082053L (en)
WO (1) WO2009139636A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011150363A1 (en) 2010-05-28 2011-12-01 Weatherford/Lamb, Inc. Deepwater completion installation and intervention system
EP2899361B1 (en) 2011-04-18 2018-08-08 Magma Global Limited Subsea conduit system
US9708864B2 (en) * 2014-12-22 2017-07-18 Ge Oil & Gas Uk Limited Riser assembly and method of forming a riser assembly

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627542A1 (en) * 1988-02-24 1989-08-25 Coflexip DEVICE FOR TRANSFERRING FLUID BETWEEN THE SUB-MARINE BOTTOM AND THE SURFACE
EP0407662B2 (en) * 1989-07-14 1999-06-23 Single Buoy Moorings Inc. Device for positioning of a buoy body
NO303741B1 (en) * 1996-03-28 1998-08-24 Alcatel Kabel Norge As Apparatus and method for anchoring a riser or the like
NO310890B1 (en) * 1997-04-29 2001-09-10 Kvaerner Oilfield Prod As Dynamic control cable for use between a floating structure and a connection point on the seabed
NO306826B1 (en) * 1998-06-12 1999-12-27 Norske Stats Oljeselskap Device by riser
GB0002703D0 (en) * 2000-02-08 2000-03-29 Victoria Oilfield Dev Limited Mooring and flowline system
US20070081862A1 (en) * 2005-10-07 2007-04-12 Heerema Marine Contractors Nederland B.V. Pipeline assembly comprising an anchoring device and method for installing a pipeline assembly comprising an anchoring device

Also Published As

Publication number Publication date
WO2009139636A1 (en) 2009-11-19
NO20082053L (en) 2009-10-30

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