EP2236737A2 - Système de support pour colonne montante - Google Patents

Système de support pour colonne montante Download PDF

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Publication number
EP2236737A2
EP2236737A2 EP09177552A EP09177552A EP2236737A2 EP 2236737 A2 EP2236737 A2 EP 2236737A2 EP 09177552 A EP09177552 A EP 09177552A EP 09177552 A EP09177552 A EP 09177552A EP 2236737 A2 EP2236737 A2 EP 2236737A2
Authority
EP
European Patent Office
Prior art keywords
riser
seabed
mid depth
support
mid
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09177552A
Other languages
German (de)
English (en)
Other versions
EP2236737A3 (fr
Inventor
Timothy Latham Withall
Hayden Marcollo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bumi Armada Berhad
Original Assignee
Bumi Armada Berhad
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 Bumi Armada Berhad filed Critical Bumi Armada Berhad
Publication of EP2236737A2 publication Critical patent/EP2236737A2/fr
Publication of EP2236737A3 publication Critical patent/EP2236737A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers
    • E21B17/015—Non-vertical risers, e.g. articulated or catenary-type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
    • E21B19/004—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform

Definitions

  • the present invention relates to a riser system for offshore oil and gas production, and more particularly relates to a riser system suitable for offshore oil and gas production situated in a shallow water.
  • Riser systems are used in offshore oil and gas production for communicating systems located on the seabed with floating facilities.
  • Dynamic riser systems are required to accommodate static and dynamic offsets and motions of a floating facility. This can become a challenging task in a shallow water especially when the floating facility such as a vessel is subject to rough weather conditions such as storms, typhoons, cyclones that will affect the riser system.
  • the present invention provides a riser system well suited to use in offshore oil and gas production located in a shallow water with large static and dynamic floating facility offsets and motions.
  • the riser system comprising::
  • the riser system has advantages in being able to accommodate floating facility static and dynamic offsets and motions which can become challenging.
  • the mid depth buoyant support may include an axial, horizontal and vertical restraint with suitable over curvature protection.
  • the mid depth tower comprises of rigid steel like structure offering full translational and rotational restraint for the riser and the termination of which is placed in a vertical and horizontal position, with correctly selected lengths of riser so as to offer compliance for the riser section connected to it.
  • the mid depth tower termination end of the riser may comprise of a rigid steel pipeline connection to a dynamic riser.
  • the mid depth tower termination end of the riser may comprise a continuos dynamic section of riser, laterally constrained all the way to the seabed and then continuing along the seabed to connect to seabed infrastructure.
  • Objects of the present invention include a configuration of a riser that is compliant to large vessel horizontal offsets, large dynamic motions of the floating system, large environmental conditions and large changes to the mass per unit length of the riser (both through internal contents density variations and marine growth).
  • Figure 1 shows a riser system of a preferred embodiment according to the present invention.
  • the riser system has a hybrid support system comprising a mid depth tower and a mid depth buoyant support.
  • the riser system includes at least one riser.
  • a plurality of riser may be provided to the riser system.
  • the riser for example may be arranged horizontally offset in the direction normal to the plane of the drawing.
  • the riser is in the form flexible tube having an upper termination point.
  • the upper termination 10 of the riser comprises for example a connection to a dynamic floating facility such as a vessel.
  • the connection point of the dynamic floating facility can be arranged at a location above or below the water line 12.
  • Portions denoted with reference numeral 1 and 2 define an upper catenary of the riser.
  • the riser are configured as such that there is a sag or lower point in this upper catenary (when the floating facility is at its nominal central position).
  • the purpose of the catenary configuration is to offer some compliance for the riser system such that it is not damaged when accommodating the static and dynamic motions of the floating facility or the environmental conditions.
  • the floating facility is subject to the rough forces of the water i.e. sea waves and currents.
  • the upper catenary of the riser is laid over the mid depth buoyant support 4 of the hybrid support system.
  • the support there may or may-not be provided some local axial restraint for the riser and there may or may-not be provided some vertical restraint with suitable over curvature protection.
  • the mid depth buoyant structure is substantially disposed in a vertical position at a suitable location in a water column that is not necessarily at the exact middle depth, but will not be at the extreme top or bottom of the water depth.
  • the mid depth buoyant support provides a vertical support system for the portions of the riser laid over either side of it.
  • the mid depth buoyant support derives its buoyancy force from an enclosed volume of displaced water.
  • the mid depth buoyant support is connected to a base connection 3 located on the seabed via tethers 5.
  • the portion of the riser configuration attached to the mid depth buoyant support but on the opposite side to the upper catenary is termed the mid span catenary 6 and 7.
  • the mid span catenary consisting of both components 6 and 7 offers superior horizontal compliance to what would be offered by a configuration with only say component 6 extending straight down to the seabed, either by a tangential or a normal connection to the seabed.
  • the mid span catenary is configured such that in the nominal benign condition it has a lower sag between 6 and 7.
  • the mid depth tower 8 which is a rigid structure offering complete rotational and translational restraint for the riser system.
  • the tower 8 maybe made from a steel type rigid structure.
  • the riser can be terminated at 14 to a rigid static steel pipeline termination or it may extend as a static flowline down to the seabed.
  • the rigid steel static flowline option is shown in Figure 1 as 9 whereby it extends down to the seabed 11 and then connects to seabed infrastructure 13.
  • the purpose of the tower 8 is to provide complete restraint to the riser whereby large environmental forces, mass per unit length variations of the riser and displacements that the riser undergoes can be restrained.
  • the mid depth tower support provides a vertical, horizontal and rotational support system for the lower end termination of the riser.
  • the mid depth tower does not necessarily need to be at exactly the middle depth of the water column but it is placed at a depth such that in the nominal position riser portion 7 offers some horizontal compliance.

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)
EP09177552.8A 2009-03-27 2009-11-30 Système de support pour colonne montante Withdrawn EP2236737A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MYPI20091250 2009-03-27

Publications (2)

Publication Number Publication Date
EP2236737A2 true EP2236737A2 (fr) 2010-10-06
EP2236737A3 EP2236737A3 (fr) 2014-02-19

Family

ID=42225009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09177552.8A Withdrawn EP2236737A3 (fr) 2009-03-27 2009-11-30 Système de support pour colonne montante

Country Status (3)

Country Link
EP (1) EP2236737A3 (fr)
CN (1) CN101845940A (fr)
AU (2) AU2009243413A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011150945A1 (fr) * 2010-06-04 2011-12-08 Nkt Flexibles I/S Système de canalisation flexible
WO2012152278A1 (fr) * 2011-05-06 2012-11-15 National Oilwell Varco Denmark I/S Système d'extraction de pétrole en mer
CN103822019A (zh) * 2014-03-11 2014-05-28 东北石油大学 水中悬浮输送管道及其施工方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140318666A1 (en) * 2011-03-11 2014-10-30 Shell Interntionale Research Maatschappij B.V. Fluid transfer hose manipulator and method of transferring a fluid
CN102410919A (zh) * 2011-08-02 2012-04-11 上海交通大学 剪切流下顶部可运动的斜置立管涡激振动旋转测试装置
FR2983233B1 (fr) * 2011-11-30 2016-01-01 Saipem Sa Installation de liaisons fond-surface flexibles multiples sur au moins deux niveaux
US9797526B2 (en) * 2015-09-16 2017-10-24 Ge Oil & Gas Uk Limited Riser assembly and method of installing a riser assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505560A (en) * 1993-10-26 1996-04-09 Offshore Energie Development Corporation (Oecd) Fluid transfer system for an offshore moored floating unit
WO2010030160A1 (fr) * 2008-09-09 2010-03-18 Misc Berhad Système de transfert de conduite fond marin-surface en mer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5615977A (en) * 1993-09-07 1997-04-01 Continental Emsco Company Flexible/rigid riser system
NO306826B1 (no) * 1998-06-12 1999-12-27 Norske Stats Oljeselskap Anordning ved stigerör
FR2790054B1 (fr) * 1999-02-19 2001-05-25 Bouygues Offshore Procede et dispositif de liaison fond-surface par conduite sous marine installee a grande profondeur
US7434624B2 (en) * 2002-10-03 2008-10-14 Exxonmobil Upstream Research Company Hybrid tension-leg riser
CN2727043Y (zh) * 2004-01-20 2005-09-21 天津市海王星海上工程技术有限公司 一种深水张力腿式单点系泊装置
GB0409361D0 (en) * 2004-04-27 2004-06-02 Stolt Offshore Sa Marine riser tower
FR2888305B1 (fr) * 2005-07-11 2008-12-12 Technip France Sa Methode et installation de raccordement d'une conduite sous-marine rigide et d'une conduite sous-marine flexible

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505560A (en) * 1993-10-26 1996-04-09 Offshore Energie Development Corporation (Oecd) Fluid transfer system for an offshore moored floating unit
WO2010030160A1 (fr) * 2008-09-09 2010-03-18 Misc Berhad Système de transfert de conduite fond marin-surface en mer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011150945A1 (fr) * 2010-06-04 2011-12-08 Nkt Flexibles I/S Système de canalisation flexible
WO2012152278A1 (fr) * 2011-05-06 2012-11-15 National Oilwell Varco Denmark I/S Système d'extraction de pétrole en mer
US9315245B2 (en) 2011-05-06 2016-04-19 National Oilwell Varco Denmark I/S Offshore system
CN103822019A (zh) * 2014-03-11 2014-05-28 东北石油大学 水中悬浮输送管道及其施工方法

Also Published As

Publication number Publication date
AU2009243413A1 (en) 2010-10-14
CN101845940A (zh) 2010-09-29
AU2016206380A1 (en) 2016-08-11
EP2236737A3 (fr) 2014-02-19

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