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WO2002075203A1 - Gainage isolant et mode d'utilisation sur un élément long d'un tuyau - Google Patents

Gainage isolant et mode d'utilisation sur un élément long d'un tuyau Download PDF

Info

Publication number
WO2002075203A1
WO2002075203A1 PCT/GB2002/001143 GB0201143W WO02075203A1 WO 2002075203 A1 WO2002075203 A1 WO 2002075203A1 GB 0201143 W GB0201143 W GB 0201143W WO 02075203 A1 WO02075203 A1 WO 02075203A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulating
cladding
bodies
voids
insulating cladding
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.)
Ceased
Application number
PCT/GB2002/001143
Other languages
English (en)
Inventor
Robert Gibson
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.)
CRP Subsea Ltd
Original Assignee
CRP Group Ltd
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 CRP Group Ltd filed Critical CRP Group Ltd
Publication of WO2002075203A1 publication Critical patent/WO2002075203A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/143—Pre-insulated pipes

Definitions

  • the present invention relates to insulating claddings and in particular, but not
  • a tanker or into a further oil pipeline for onward transmission is normally achieved by means of a riser which extends between the production platform and the seabed and a flowline connecting the lower end of the riser to the wellhead.
  • a typical insulating material which retains the contents at a sufficiently high temperature to prevent solidification or waxing of its components.
  • a typical insulating material which retains the contents at a sufficiently high temperature to prevent solidification or waxing of its components.
  • material is syntactic polyurethane, comprising glass microspheres intimately mixed with
  • the macrospheres are arranged in deep water and/or high temperature applications (such as might be experienced with products extracted from an underwater wellhead). For example, in deep water and/or high temperature applications (such as might be experienced with products extracted from an underwater wellhead), the macrospheres are positioned in deep water and/or high temperature applications (such as might be experienced with products extracted from an underwater wellhead).
  • macrospheres to an unacceptable degree.
  • the inclusion of macrospheres inevitably increases the buoyancy of the cladding, which is not always desirable.
  • the preformed insulating bodies can be formed from materials (e.g. polypropylene) which are relatively difficult to mould around a pipe yet which are significantly cheaper
  • substantially solid preformed insulating bodies overcomes or alleviates the problems associated with use of embedded hollow macrospheres as in the prior art.
  • substantially solid is intended to distinguish from primarily hollow bodies (such as macrospheres) and includes any body which is primarily solid and rigid, even if the body includes one or more voids.
  • the insulating bodies may comprise regularly-shaped insulating bodies (e.g.
  • the insulating bodies may comprise irregularly shaped insulating bodies (e.g.
  • the maximum dimension e.g.
  • the diameter) of the insulating bodies in any one direction will be about 10mm but this can
  • the insulating bodies may be made from a single component (e.g. a single resin) and/or several components (e.g. a mixture of two or more resins).
  • the insulating bodies may be made from a single component (e.g. a single resin) and/or several components (e.g. a mixture of two or more resins).
  • the insularting bodies may comprise homogenous insularting bodies and/or may comprise insulating bodies
  • the voids may simply be holes in the material and/or may be
  • the moulded matrix may be homogeneous or may comprise one or more voids.
  • voids may comprise holes in the material and/or may be formed by the inclusion of an additional component (e.g. glass microspheres).
  • the moulded matrix may be flexible (e.g. polyurethane elastomer) or substantially rigid (e.g. an epoxy resin).
  • the insulating cladding may additionally comprise a plurality of hollow bodies (e.g. macrospheres) embedded in the moulded matrix. This might be appropriate, for example, for use in less extreme conditions and/or where insulation requirements are lower.
  • hollow bodies e.g. macrospheres
  • the insulating cladding may further comprise an exterior protective layer.
  • the protective layer may comprise a skin or may comprise an outer pipe. In either case, the protective layer may be used as a part of a mould for forming the composite layer of insulating bodies embedded in the moulded matrix.
  • a pipe assembly comprises a
  • a method of forming a clad elongate member comprises locating a section of the elongate member to be clad in a mould, introducing into the mould a plurality of discrete, preformed, substantially solid insulating bodies and a settable matrix material and allowing the mouldable matrix material to harden within the mould.
  • the mould may comprise a member which forms part of a
  • the exterior surface of a steel pipe 10 of circular cross- section is covered with an annular insulating coating 12.
  • the thickness of the coating 12 is approximately equal to the radius of the pipe 10, but this can be adjusted, according to the conditions in which the pipe is to be used.
  • the coating 12 comprises a plurality of preformed spherical polypropylene pellets 14 of approximately 10mm diameter which are embedded in a set or cured filler or matrix material 16.
  • the filler or matrix material 16 can take many different forms. For example,
  • a mould is positioned around a length of pipe 10 to be
  • pellets 14 are poured into the mould and if spherical pellets are used, they tend to assume a relatively ordered configuration.
  • the desired filler or matrix material 16, in liquid form is then poured into the mould and works its way in between the pellets, as
  • the filler or matrix material 16 is allowed to set or cure, resulting in a coatmg in which the pellets 14 are embedded in the filler or matrix material.
  • the coating as described has very good insulating properties, since both the pellets 14 and the filler or matrix material 16 can be chosen accordingly. Moreover, the coating as described has very good insulating properties, since both the pellets 14 and the filler or matrix material 16 can be chosen accordingly. Moreover, the coating as described has very good insulating properties, since both the pellets 14 and the filler or matrix material 16 can be chosen accordingly. Moreover, the coating as described has very good insulating properties, since both the pellets 14 and the filler or matrix material 16 can be chosen accordingly. Moreover, the
  • the pellets 14 as described are spherical pellets, but other shapes including other regular shapes (e.g. ovoid) and/or irregular shapes (e.g. including edges and/or comers) may be used if desired instead of, or in addition to, the spherical pellets.
  • the pellets will be described in detail below.
  • the pellets are made from solid polypropylene, but variations are possible.
  • the polypropylene can be supplied as a single resin or as a mixture of two or more resins.
  • the pellets may include voids.
  • the voids may simply be holes in the pellets and/or may be formed by the inclusion of an additional component having a void or voids, e.g. glass microspheres which are well known in the art.
  • the filler or matrix material 16 which occupies the spaces between the pellets may be homogenous or may itself include voids.
  • the voids may comprise holes in the filler or matrix material and/or may be formed by the inclusion of an additional
  • Fig. 2 is very similar to that of Fig. 1 and the same reference numerals are used to identify corresponding features. The difference from the Fig. 1
  • an external protective layer or skin 18 on the outermost cylindrical surface of the insulating pellet/filler coating 12.
  • the skin 18 may be
  • homogenous e.g. polyurethane elastomer
  • a composite material e.g. glass reinforced
  • the skin may be applied to the outer surface of the solid coating 12 or
  • Fig. 3 is also very similar to that of Fig. 1 and again the same
  • outer tubular pipe 20 in contact with, and positioned radially outward of, the outer surface of the insulating coating 12.
  • the primary purpose of the outer pipe 20 is to provide mechanical protection to the coating. However, it can also be used to form the outer surface of the mould into which the pellets 14 and the filler or
  • the outer pipe 20 may also be capable of withstanding external pressure and in extreme cases this may allow the space between the inner pipe 10 and the outer pipe 20 to remain at atmospheric pressure.
  • the outer pipe may be metallic and/or may be formed from plastics or a composite material (e.g. glass reinforced plastics).
  • Fig. 4 differs from that of Fig. 1 in that some of the solid pellets 14 are
  • the coating comprises a mixture of solid pellets 14 and hollow macrospheres 22 embedded in the filler or matrix material 16.
  • FIG. 4 there is no outer shell or skin 18 (as in Fig. 2) or outer pipe 20 (as in Fig. 3) but these may be included if desired.
  • the embodiment of Fig. 5 has a two-layer coating 12', comprising an inner annular
  • layer 24 formed from the same components as the coating 12 of the first embodiment and
  • an outer annular layer 26 formed from hollow macrospheres 28 embedded in a filler or
  • the coating 12' is formed in a two-
  • stage moulding process namely: (a) a length of pipe 10 is placed in a first mould, the pellets 14 and the associated filler or matrix material 16 are poured in and allowed to cure
  • the partially-clad pipe 10 having the inner layer 24 is placed in a second, larger mould, the macrospheres 28 and the associated filler or matrix material 16 are poured in and allowed to cure or solidify to form the outer layer 26.
  • the coated pipe having the two-layered coating 12' is then removed from the mould.
  • the invention is not restricted to the details of the foregoing embodiments.
  • the materials used may differ from those described. This might be desirable depending upon the conditions in which the coated pipe is to be used.
  • the invention is equally applicable to pipes and other elongate members made of other materials, such as plastics or composite materials (e.g. glass reinforced plastics). Indeed, the invention is applicable to many other types of

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Thermal Insulation (AREA)

Abstract

La présente invention concerne un gainage isolant (12), notamment un gainage pour tuyau d'acier (10). Il comprend une pluralité de corps isolants (14) discrets, préformés, sensiblement solides inclus dans une matrice solide (16). Ces corps isolants solides sont relativement bon marché, tout en conférant une excellente isolation. De plus, l'utilisation de corps isolants sensiblement solides évite les incidents liés à l'écrasement des corps isolants creux.
PCT/GB2002/001143 2001-03-17 2002-03-13 Gainage isolant et mode d'utilisation sur un élément long d'un tuyau Ceased WO2002075203A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0106732A GB0106732D0 (en) 2001-03-17 2001-03-17 Pipe assembly
GB0106732.1 2001-03-17

Publications (1)

Publication Number Publication Date
WO2002075203A1 true WO2002075203A1 (fr) 2002-09-26

Family

ID=9910979

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/001143 Ceased WO2002075203A1 (fr) 2001-03-17 2002-03-13 Gainage isolant et mode d'utilisation sur un élément long d'un tuyau

Country Status (2)

Country Link
GB (1) GB0106732D0 (fr)
WO (1) WO2002075203A1 (fr)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8261558B2 (en) 2009-06-25 2012-09-11 Nomaco Inc. Self-adjusting insulation, including insulation particularly suited for pipe or duct
USD688069S1 (en) 2012-09-28 2013-08-20 Noel Group Llc Mattress bed cushion
USD688492S1 (en) 2010-03-03 2013-08-27 Noel Group Llc Mattress bed cushion
USD690536S1 (en) 2012-07-26 2013-10-01 Nomaco Inc. Motion isolation insulator pad
USD691400S1 (en) 2012-02-10 2013-10-15 Nomaco Inc. Stackable base for mattress assembly
USD691401S1 (en) 2009-03-06 2013-10-15 Noel Group, Llc Mattress bed cushion
USD692693S1 (en) 2012-04-27 2013-11-05 Noel Group Llc Mattress bed cushion
USD692694S1 (en) 2012-09-28 2013-11-05 Noel Group Llc Mattress bed cushion
USD692692S1 (en) 2011-04-29 2013-11-05 Noel Group Llc Mattress bed cushion
USD693144S1 (en) 2010-03-03 2013-11-12 Noel Group Llc Mattress bed cushion
USD693148S1 (en) 2010-03-03 2013-11-12 Noel Group Llc Mattress bed cushion
USD693149S1 (en) 2012-04-27 2013-11-12 Noel Group Llc Mattress bed cushion
USD693145S1 (en) 2010-03-03 2013-11-12 Noel Group Llc Mattress bed cushion
USD693146S1 (en) 2012-04-27 2013-11-12 Noel Group Llc Mattress bed cushion
USD693147S1 (en) 2012-04-27 2013-11-12 Noel Group Llc Mattress bed cushion
USD694041S1 (en) 2012-09-28 2013-11-26 Noel Group Llc Mattress bed cushion
USD694553S1 (en) 2010-03-03 2013-12-03 Noel Group Llc Mattress bed cushion
USD694552S1 (en) 2012-04-27 2013-12-03 Noel Group Llc Mattress bed cushion
USD697337S1 (en) 2012-07-03 2014-01-14 Nomaco, Inc. Stackable base for mattress assembly
USD701713S1 (en) 2012-11-09 2014-04-01 Noel Group, Llc Mattress bed cushion
USD704962S1 (en) 2013-09-09 2014-05-20 Noel Group Llc Mattress bed cushion
USD707467S1 (en) 2012-11-09 2014-06-24 Noel Group Llc Mattress bed cushion
USD707468S1 (en) 2012-11-09 2014-06-24 Noel Group Llc Mattress bed cushion
USD709301S1 (en) 2012-11-09 2014-07-22 Noel Group Llc Mattress bed cushion
US9157566B2 (en) 2012-05-11 2015-10-13 Nomaco Inc. Insulation systems employing expansion features to insulate elongated containers subject to extreme temperature fluctuations, and related components and methods
US10045633B2 (en) 2013-04-26 2018-08-14 Noel Group Llc Cushioning assemblies with thermoplastic elements encapsulated in thermoset providing customizable support and airflow, and related methods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4744842A (en) * 1985-01-17 1988-05-17 Webco Limited Method of making a coated pipeline
GB2269876A (en) * 1992-08-12 1994-02-23 Terence Jeffrey Corbishley Hydrotherm-thermal insulation for submarine pipelines and equipment
WO1999005447A1 (fr) * 1997-07-23 1999-02-04 Cuming Corporation Isolation de canalisations sous-marines
EP1070906A1 (fr) * 1999-07-16 2001-01-24 Fmc Corporation Matériau de revêtement pour l'application SOUS-MARINE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4744842A (en) * 1985-01-17 1988-05-17 Webco Limited Method of making a coated pipeline
GB2269876A (en) * 1992-08-12 1994-02-23 Terence Jeffrey Corbishley Hydrotherm-thermal insulation for submarine pipelines and equipment
WO1999005447A1 (fr) * 1997-07-23 1999-02-04 Cuming Corporation Isolation de canalisations sous-marines
EP1070906A1 (fr) * 1999-07-16 2001-01-24 Fmc Corporation Matériau de revêtement pour l'application SOUS-MARINE

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD691401S1 (en) 2009-03-06 2013-10-15 Noel Group, Llc Mattress bed cushion
USD692691S1 (en) 2009-03-06 2013-11-05 Noel Group Llc Mattress bed cushion
USD692690S1 (en) 2009-03-06 2013-11-05 Noel Group Llc Mattress bed cushion
US8658264B2 (en) 2009-06-25 2014-02-25 Nomaco Inc. Self-adjusting insulation, including insulation particularly suited for pipe or duct
US8261558B2 (en) 2009-06-25 2012-09-11 Nomaco Inc. Self-adjusting insulation, including insulation particularly suited for pipe or duct
USD693148S1 (en) 2010-03-03 2013-11-12 Noel Group Llc Mattress bed cushion
USD694553S1 (en) 2010-03-03 2013-12-03 Noel Group Llc Mattress bed cushion
USD688492S1 (en) 2010-03-03 2013-08-27 Noel Group Llc Mattress bed cushion
USD693145S1 (en) 2010-03-03 2013-11-12 Noel Group Llc Mattress bed cushion
USD693144S1 (en) 2010-03-03 2013-11-12 Noel Group Llc Mattress bed cushion
USD692692S1 (en) 2011-04-29 2013-11-05 Noel Group Llc Mattress bed cushion
USD691400S1 (en) 2012-02-10 2013-10-15 Nomaco Inc. Stackable base for mattress assembly
USD693147S1 (en) 2012-04-27 2013-11-12 Noel Group Llc Mattress bed cushion
USD693149S1 (en) 2012-04-27 2013-11-12 Noel Group Llc Mattress bed cushion
USD693146S1 (en) 2012-04-27 2013-11-12 Noel Group Llc Mattress bed cushion
USD692693S1 (en) 2012-04-27 2013-11-05 Noel Group Llc Mattress bed cushion
USD694552S1 (en) 2012-04-27 2013-12-03 Noel Group Llc Mattress bed cushion
US9157566B2 (en) 2012-05-11 2015-10-13 Nomaco Inc. Insulation systems employing expansion features to insulate elongated containers subject to extreme temperature fluctuations, and related components and methods
USD697337S1 (en) 2012-07-03 2014-01-14 Nomaco, Inc. Stackable base for mattress assembly
USD690536S1 (en) 2012-07-26 2013-10-01 Nomaco Inc. Motion isolation insulator pad
USD688069S1 (en) 2012-09-28 2013-08-20 Noel Group Llc Mattress bed cushion
USD694041S1 (en) 2012-09-28 2013-11-26 Noel Group Llc Mattress bed cushion
USD692694S1 (en) 2012-09-28 2013-11-05 Noel Group Llc Mattress bed cushion
USD701713S1 (en) 2012-11-09 2014-04-01 Noel Group, Llc Mattress bed cushion
USD707467S1 (en) 2012-11-09 2014-06-24 Noel Group Llc Mattress bed cushion
USD707468S1 (en) 2012-11-09 2014-06-24 Noel Group Llc Mattress bed cushion
USD709301S1 (en) 2012-11-09 2014-07-22 Noel Group Llc Mattress bed cushion
US10045633B2 (en) 2013-04-26 2018-08-14 Noel Group Llc Cushioning assemblies with thermoplastic elements encapsulated in thermoset providing customizable support and airflow, and related methods
USD704962S1 (en) 2013-09-09 2014-05-20 Noel Group Llc Mattress bed cushion

Also Published As

Publication number Publication date
GB0106732D0 (en) 2001-05-09

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