WO2007108693A1 - Reducteur de vibrations destine a reduire les vibrations induites par l'ecoulement dans une canalisation et procede de reduction de ces vibrations - Google Patents

Reducteur de vibrations destine a reduire les vibrations induites par l'ecoulement dans une canalisation et procede de reduction de ces vibrations Download PDF

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Publication number
WO2007108693A1
WO2007108693A1 PCT/NO2006/000105 NO2006000105W WO2007108693A1 WO 2007108693 A1 WO2007108693 A1 WO 2007108693A1 NO 2006000105 W NO2006000105 W NO 2006000105W WO 2007108693 A1 WO2007108693 A1 WO 2007108693A1
Authority
WO
WIPO (PCT)
Prior art keywords
vibration reducer
pipe
vibration
band
reducer
Prior art date
Application number
PCT/NO2006/000105
Other languages
English (en)
Inventor
Lorents REINÅS
Original Assignee
Statoil 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 Statoil Asa filed Critical Statoil Asa
Priority to PCT/NO2006/000105 priority Critical patent/WO2007108693A1/fr
Publication of WO2007108693A1 publication Critical patent/WO2007108693A1/fr

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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
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
    • 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

Definitions

  • the present invention relates to damping or hindrance of flow-induced vibrations in coiled tubing and other pipes. More specifically the invention relates to a vibration damper in the form of a band arranged as a spiral spring having a weak spring force, which spring can be extended so as to encompass a substantial part of the pipe exposed for vibration-inducing flows.
  • a coiled tubing as a free-standing riser in open waters will also be exposed to flow-induced vibrations similarly to rigid risers.
  • flow-induced vibrations similarly to rigid risers.
  • several companies are exploring subsea utilization of coiled tubing. The effect of flow-induced vibrations is by many considered the main element of uncertainty against the feasibility of such utilization.
  • Patent Publication US 5 421 413 contains a comprehensive description of a general method to reduce flow- induced vibrations, and a more specific description of a device and a method that simplifies installation of the vibration -damping device using a flexible "fairing" or shroud surrounding the riser, coiled tubing, cable, etc.
  • a plurality of shrouds or fairings or a continuous shroud is brought over the riser or similar and is fastened on at least one location to the riser preventing the shroud or fearing to float up or down. It would be more preferable with a device without requirement for fastening to the riser or similar.
  • a vibration reducer which reduces or removes flow-induced vibrations for a pipe, particularly a coiled tubing, distinguished in that the vibration reducer comprises at least one continuous band arranged as a spiral spring that elastically can be extended out in order to surround a substantial length of the pipe exposed for vibration-inducing water flows.
  • That the band is continuous means that the band is continuous in one piece and thereby constitutes one unit.
  • a substantial part of the length of the pipe means a sufficient part of the length of the pipe to reduce vibrations to an acceptable level. It is thereby not obligatory to surround the whole length of pipe submerged into water.
  • the invention also provides a method to reduce flow-induced vibrations for a pipe, in particular a coiled tubing, by arranging a body around the pipe in axial direction to prevent flow vortices from being generated around the coiled tubing, distinguished by fastening a vibration reducer comprising at least one continuous band at an upper end of the pipe, and in one operation to extend the vibration reducer elastically likewise as a spiral spring to surround a substantial part of the length of the pipe that is exposed to vibration-inducing water flows.
  • Figure IA is a sketch where the vibration damper is contracted at a vessel/a rig.
  • Figure IB is a sketch illustrating the vibration damper extended between the vessel/rig and down to a Christmas tree at the seabed
  • FIG. 2 illustrates the band as extended
  • Figure 3 illustrates several cross-section shapes of the band.
  • the figures IA and IB illustrate a rig 3 or a vessel or another feasible device floating on the surface.
  • This vessel or rig can have/has an opening 4 in the hull to bring a coiled tubing/riser 5 down into the sea and further down to a subsea Christmas tree 6 for connection and optional feeding further into the well bore.
  • the coiled tubing can have an oval or circular cross-section shape.
  • On deck or at the lower part of the opening in the hull, the upper part of the vibration reducer 1 will be fastened by a fastening device 2.
  • the fastening device 2 must carry both the vibration reducer 1 and any optional weight as required to pull the vibration reducer 1 down to the Christmas tree at the seabed.
  • the vibration reducer 1 will by virtue of its own structural capacity or by use of external means (such as a wire, rope, hose or similar, in the following called a "line") be pulled back to the vessel or rig 3 when it is not in operation or requires cleaning. Further, the vibration reducer 1 will not guide or affect the strength of the interior pipe 5 to any substantial extent. As the vibration reducer 1 and the internal pipe 5 are not fixedly connected to each other, the vibration reducer and the riser can be lowered or taken up independently of each other, but most conveniently the units are brought down or taken up simultaneously.
  • the vibration reducer 1 is intended to cover the whole riser length exposed for flow-induced vibrations, or a sufficient part thereof to achieve an acceptable low level of vibrations. The vibration reducer will ensure that the conditions for flow-induced loads no longer will be present as the flow conditions of the fluid in the vicinity of the riser is "disturbed" by the vibration reducer.
  • a line can be a wire, rope, hose or similar.
  • the line is fastened to the lower part of the vibration reducer in a fastening means, in order to be able to controllably retrieve or deploy the vibration reducer.
  • the line can, for giving the best possible "stability" for the vibration reducer, be extended through the vibration reducer material in axial direction.
  • the number of through-going lines can be one or several, preferably at least two, diametrically opposed to provide balance. If the vibration reducer comprises several bands, preferably as many through-going lines can be provided as there is bands, optionally multiples thereof. This means that if 2 bands of 180 degrees displacement is used, a number of 2, 4, 6, ... of lines is used, for 3 bands, 3, 6, 9... lines are used.
  • the vibration reducer 1 will have a shape similar as a flat-coiled spring with internal open diameter, but with only a small spring force to ensure that the range of utilization (operational depth/height) not results in any plastic material flow/deformation of the vibration reducer. Tests have revealed that a vibration reducer functions optimally if there are 3 parallel bands extending with 120 degrees displacement down the pipe. The most preferable lead for the extended spiral or helical will be from 5D to 17D, dependent on utilization, for which D is the diameter of the coiled tubing, but this can be deviated from. Typically the vibration reducer can be made of a band having a cross-section as approximately elliptical/rectangular.
  • the height can generally be in the range 1-10 mm, but for large depths with large bands, or strong flows, the thickness can preferably be increased.
  • the height will preferably be substantially smaller than the width to give the best technical effect, however, it is possible to use a round band, but the vibration reduction and the height as constricted will thereby not be optimal.
  • the band can as such have any cross-sectional shapes providing vibration reduction, from round to flat, of which flat is preferable.
  • the width of the band will be in relation to the diameter of the pipe/coiled tubing 5 the vibration reducer 1 is to remove or reduce the flow-induced vibrations for, typically in the range 0.15D to 0.25D, for which D is the diameter of the coiled tubing.
  • the vibration reducer can be made from metal, such as steel, polymer, composites or any mixture thereof. It will be distinguished by a very small total height as constricted, for example 3/1000 of the length as extended, and with possibility to cover the whole distance between for example a ship and a wellhead on the bottom, adapted to the requirement.
  • the length or height as retrieved can be further reduced by giving the vibration reducer conical shape as viewed from the side, of which the upper part can have an inner diameter of up to 15 inches (about 38 cm).
  • the vibration reducer in retrieved form will preferably be arranged on a support or a holder that easily can be moved on deck or transported away.
  • the support can be conical, and this can be convenient to reduce the height as retrieved further.
  • FIG. 2 illustrates a band Ia in extended form.
  • the lead 5 is indicated on the figure.
  • Figure 3 illustrates some typical cross-sectional shapes of the band Ia. Further, cross-sectional shapes, from round to even flatter, are possible.
  • the vibration reducer according to the invention preferably comprises more than one band, preferably 3 bands, which bands are symmetrically displaced or rotated relative to each other.
  • the vibration reducer according to the invention can in one embodiment comprise bands that are rotated/wound in opposite directions.
  • the lower end of the vibration reducer can be provided with a fastening device.
  • the fastening device can be weighted to pull the vibration reducer down to a Christmas tree or a subsea installation and/or it can be shaped to facilitate optional connection to the Christmas tree or something else, preferably remotely controlled, for example with a ROV (remotely operated vehicle).
  • ROV remotely operated vehicle
  • the vibration reducer can however hang freely in its lower end, provided it will not result in any damage to other equipment.
  • the coiled tubing can be brought through the vibration reducer having an internal diameter larger than the coiled tubing and equipment fitted thereto, and further down to the Christmas tree or optionally into the well bore.
  • the vibration reducer can, if desired, be brought down simultaneously.
  • the vibration reducer will not be fastened directly to the coiled tubing in any way.
  • the vibration reducer and coiled tubing can be retrieved and deployed independently of each other.
  • the vibration reducer has particular advantage at deployment and retrieval, either together with/or independent of the coiled tubing, as this does not increase the requirement for labor substantially on the vessel/rig compared to usual installation.
  • the vibration reducer can be extended even though the coiled tubing is to be retrieved.
  • the vibration reducer comprises a band of thickness of about 3 mm and width of about 10 mm.
  • the total height of the vibration reducer in retrieved shape for a depth of 300 m will only be about 900 mm.
  • the height as retrieved will be about 2 100 mm.
  • the vibration reducer can in substance be extended or retrieved similarly as a window blind.

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)
  • Vibration Prevention Devices (AREA)

Abstract

L'invention concerne un réducteur de vibrations réduisant ou supprimant les vibrations induites par l'écoulement dans une canalisation, en particulier dans un tubage enroulé, caractérisé en ce que le réducteur de vibrations comporte au moins une bande continue agencée sous forme de ressort spiral susceptible d'être allongé de manière élastique pour entourer une partie substantielle de la longueur de la canalisation exposée à des écoulements d'eau générateurs de vibrations. L'invention concerne également un procédé faisant usage du réducteur de vibrations.
PCT/NO2006/000105 2006-03-21 2006-03-21 Reducteur de vibrations destine a reduire les vibrations induites par l'ecoulement dans une canalisation et procede de reduction de ces vibrations WO2007108693A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/NO2006/000105 WO2007108693A1 (fr) 2006-03-21 2006-03-21 Reducteur de vibrations destine a reduire les vibrations induites par l'ecoulement dans une canalisation et procede de reduction de ces vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NO2006/000105 WO2007108693A1 (fr) 2006-03-21 2006-03-21 Reducteur de vibrations destine a reduire les vibrations induites par l'ecoulement dans une canalisation et procede de reduction de ces vibrations

Publications (1)

Publication Number Publication Date
WO2007108693A1 true WO2007108693A1 (fr) 2007-09-27

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PCT/NO2006/000105 WO2007108693A1 (fr) 2006-03-21 2006-03-21 Reducteur de vibrations destine a reduire les vibrations induites par l'ecoulement dans une canalisation et procede de reduction de ces vibrations

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WO (1) WO2007108693A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009070483A1 (fr) * 2007-11-29 2009-06-04 Shell Oil Company Systèmes de liston et procédés
CN103321593A (zh) * 2013-06-25 2013-09-25 西南石油大学 一种主动抑制立管涡激振动的装置及方法
CN110588043A (zh) * 2019-03-14 2019-12-20 杭州电子科技大学 一种用于塑料管收紧的装置
WO2020077595A1 (fr) * 2018-10-18 2020-04-23 大连理工大学 Amortisseur de masse accordé par courants de foucault électriques multidimensionnel
CN113529639A (zh) * 2021-07-22 2021-10-22 西南石油大学 一种网罩内列板与叶轮组合旋转的立管抑振装置及方法
WO2024081417A1 (fr) * 2022-10-13 2024-04-18 J. Ray Mcdermott, S.A. Appareil de suppression de vibrations induites par vortex (viv) et procédé d'installation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2335248A (en) * 1998-03-07 1999-09-15 Crp Group Ltd Vortex shedding claddings for submerged tubulars
US6347911B1 (en) * 1996-06-11 2002-02-19 Slickbar Products Corp. Vortex shedding strake wraps for submerged pilings and pipes
WO2004020777A1 (fr) * 2002-08-28 2004-03-11 Lankhorst Special Mouldings B.V. Element de suppression des vibrations induites par les tourbillons, kit de construction, appareil d'extraction de matieres minerales et moule
WO2005024247A1 (fr) * 2003-09-09 2005-03-17 Crp Group Limited Gainage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6347911B1 (en) * 1996-06-11 2002-02-19 Slickbar Products Corp. Vortex shedding strake wraps for submerged pilings and pipes
GB2335248A (en) * 1998-03-07 1999-09-15 Crp Group Ltd Vortex shedding claddings for submerged tubulars
WO2004020777A1 (fr) * 2002-08-28 2004-03-11 Lankhorst Special Mouldings B.V. Element de suppression des vibrations induites par les tourbillons, kit de construction, appareil d'extraction de matieres minerales et moule
WO2005024247A1 (fr) * 2003-09-09 2005-03-17 Crp Group Limited Gainage

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009070483A1 (fr) * 2007-11-29 2009-06-04 Shell Oil Company Systèmes de liston et procédés
GB2467676A (en) * 2007-11-29 2010-08-11 Shell Int Research Strake systems and methods
CN103321593A (zh) * 2013-06-25 2013-09-25 西南石油大学 一种主动抑制立管涡激振动的装置及方法
WO2020077595A1 (fr) * 2018-10-18 2020-04-23 大连理工大学 Amortisseur de masse accordé par courants de foucault électriques multidimensionnel
US11293512B2 (en) 2018-10-18 2022-04-05 Dalian University Of Technology Multi-dimensional eddy current tuned mass damper
CN110588043A (zh) * 2019-03-14 2019-12-20 杭州电子科技大学 一种用于塑料管收紧的装置
CN113529639A (zh) * 2021-07-22 2021-10-22 西南石油大学 一种网罩内列板与叶轮组合旋转的立管抑振装置及方法
WO2024081417A1 (fr) * 2022-10-13 2024-04-18 J. Ray Mcdermott, S.A. Appareil de suppression de vibrations induites par vortex (viv) et procédé d'installation

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