WO2007085013A2 - Conduite sous-marine isolée au moyen d'un revêtement isolant souple - Google Patents

Conduite sous-marine isolée au moyen d'un revêtement isolant souple Download PDF

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Publication number
WO2007085013A2
WO2007085013A2 PCT/US2007/060836 US2007060836W WO2007085013A2 WO 2007085013 A2 WO2007085013 A2 WO 2007085013A2 US 2007060836 W US2007060836 W US 2007060836W WO 2007085013 A2 WO2007085013 A2 WO 2007085013A2
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
length
insulated
extrusion
syntactic foam
Prior art date
Application number
PCT/US2007/060836
Other languages
English (en)
Other versions
WO2007085013A3 (fr
Inventor
Lou Watkins
Original Assignee
Cuming Corporation
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 Cuming Corporation filed Critical Cuming Corporation
Publication of WO2007085013A2 publication Critical patent/WO2007085013A2/fr
Publication of WO2007085013A3 publication Critical patent/WO2007085013A3/fr

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
    • F16L59/153—Arrangements for the insulation of pipes or pipe systems for flexible pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1228—Joining preformed parts by the expanding material
    • B29C44/1242—Joining preformed parts by the expanding material the preformed parts being concentric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/681—Component parts, details or accessories; Auxiliary operations
    • B29C70/682—Preformed parts characterised by their structure, e.g. form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/72—Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
    • 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
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • 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
    • F16L59/10—Bandages or covers for the protection of the insulation, e.g. against the influence of the environment or against mechanical damage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151—Coating hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B29L2023/225—Insulated

Definitions

  • the present invention relates to the field of insulation for subsea pipe, and in particular to insulated subsea pipe with flexible insulation.
  • Syntactic foam is increasingly used as thermal insulation on offshore oil pipelines and subsea equipment.
  • the insulation helps maintain temperature of the well products and prevent coagulation due to cooling.
  • Syntactic foam e.g., tiny glass microspheres embedded in a plastic resin binder
  • achieving a proper balance of physical properties is difficult because the most durable binder materials, such as epoxy, tend to be rigid and are prone to cracking when flexed by bending or thermal expansion.
  • Highly flexible materials such as polyurethane or rubber often break down under the hot, wet conditions at the wellhead.
  • the subject invention aims to increase the flexibility of otherwise rigid materials and make them more useful for subsea insulation.
  • An insulated length of pipe includes a length of pipe and a flexible insulating material coating lengthwise surrounding the length of pipe.
  • the flexible insulating coating comprises syntactic foam and a length of relatively narrow elastomeric extrusion spirally wrapped around the length of pipe and embedded within the syntactic foam where the elastomeric extrusion comprises a gelatinous filler.
  • An insulated length of pipe includes a length of pipe and an insulating coating.
  • a majority of the insulating coating includes syntactic foam whose flexibility is increased by relatively narrow conformable tape wound spirally (e.g., helically) around the pipe.
  • the tape is preferably an elastomeric material that is filled with gelatinous material.
  • the technique of the present invention facilitates use of a durable and long-lasting rigid plastic binder resin, thereby improving the functionality of the insulation system, while increasing flexibility and preventing cracks that would otherwise detract from system efficiency.
  • FIG. 1 is a perspective view of a length of insulated pipe
  • FIG. 2 a partial cross-sectional illustration of a portion of the length of pipe. DESCRIPTION OF THE INVENTION
  • FIG. 1 illustrates a perspective view of an insulated length of pipe 10.
  • the insulated length of pipe includes an inner steel pipe 12 that is encased lengthwise with syntactic foam 14.
  • a hollow extrusion of elastomeric material e.g., natural or synthetic rubber, silicone, or polyurethane, among others
  • a gelatinous paste e.g., glass microspheres in silicone grease
  • suitable low-modulus filler e.g., glass microspheres in silicone grease
  • the tape is wrapped for example in a spiral geometry (e.g., helically) around the pipe to be insulated. It is contemplated that wrapping geometries other than helical may be used.
  • the wrap is arranged so that clearance space is provided at the inner (ID) side of the insulation, while the tape is flush against the outer (OD) side. This provides increased conformability at the OD, which is where most of the flexure strain occurs.
  • the tape 16 is bonded in place and becomes an integral part of the insulation system. Bending of the pipe causes relative movement of the coils of rigid syntactic foam, with alternative expansion and contraction of the flexible tape. Experiments have shown that an arrangement similar to that illustrated in FIG. 1 results in a twenty-five times (25x) increase in flexibility of rigid cast-on-pipe insulation. Other embodiments of the invention may be used to achieve similar improvements for insulation applied to a variety of subsea equipment.
  • FIG. 2 a partial cross-sectional illustration of a portion of the length of pipe illustrated in FIG. 1.
  • a technique for manufacturing the insulated pipe according to an aspect of the present invention shall now be explained.
  • the steel pipe is cleaned and prepared for coating.
  • a length of plastic tubing such as extruded polyethylene tubing, is prepared to form the outer jacket, as explained for example in U.S. Patent 6,058,979 assigned to the assignee of the present invention and hereby incorporated by reference.
  • the conformable tape is then affixed to the inner surface of the plastic tubing, arranged in a helical pattern, and positioned with a gap between the tape and the steel pipe.
  • the plastic tubing, with the conformable tape attached is then drawn over the pipe and sealed at both ends.
  • liquid syntactic foam is injected into the annulus formed between the plastic tubing and the steel pipe, filling all space and embedding the conformable tape.
  • One of ordinary skill in the art will recognize that a number of other manufacturing techniques may be used to provide the insulated subsea pipe with flexible insulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Thermal Insulation (AREA)

Abstract

L'invention porte sur une longueur isolée de conduite comprenant une longueur de conduite et un revêtement souple dans un matériau isolant qui entoure la conduite sur sa longueur. Le revêtement isolant souple comprend une mousse syntactique et un ruban adaptable à la longueur renfermant un élastomère extrudé relativement étroit enroulé en spirale autour de la longueur de la conduite et encastré dans la mousse syntactique, l'élastomère extrudé comprenant une charge gélatineuse. La majeure partie du revêtement isolant est composée d'une mousse syntactique dont on augmente la souplesse en enroulant en spirale autour de la conduite (p.ex., de manière hélicoïdale) un ruban adaptable relativement étroit.
PCT/US2007/060836 2006-01-20 2007-01-22 Conduite sous-marine isolée au moyen d'un revêtement isolant souple WO2007085013A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76269206P 2006-01-20 2006-01-20
US60/762,692 2006-01-20

Publications (2)

Publication Number Publication Date
WO2007085013A2 true WO2007085013A2 (fr) 2007-07-26
WO2007085013A3 WO2007085013A3 (fr) 2007-09-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/060836 WO2007085013A2 (fr) 2006-01-20 2007-01-22 Conduite sous-marine isolée au moyen d'un revêtement isolant souple

Country Status (1)

Country Link
WO (1) WO2007085013A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011161472A1 (fr) * 2010-06-26 2011-12-29 Trellborg Offshore Uk Limited Système passif de gestion thermique pour pipelines à liquides
US10030094B2 (en) 2008-07-10 2018-07-24 Huntsman International Llc Polyisocyanurate-based syntactic coating for offshore applications
US10197212B2 (en) 2014-11-25 2019-02-05 Halliburton Energy Services, Inc. Smart subsea pipeline
US10197197B2 (en) 2014-11-25 2019-02-05 Halliburton Energy Services, Inc. Smart subsea pipeline
GB2568889A (en) * 2017-11-29 2019-06-05 Subsea 7 Us Llc Pipeline coatings
US10443763B2 (en) 2014-11-25 2019-10-15 Halliburton Energy Services, Inc. Smart subsea pipeline
US10544893B2 (en) 2014-11-25 2020-01-28 Halliburton Energy Services, Inc. Smart subsea pipeline with conduits
US10683950B2 (en) 2014-11-25 2020-06-16 Halliburton Energy Services, Inc. Smart subsea pipeline with channels

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030127148A1 (en) * 2002-01-07 2003-07-10 Watkins Lou W. Subsea insulated pipeline with pre-cured syntactic elements and methods of manufacture
GB2388641A (en) * 2002-05-17 2003-11-19 Coflexip Stena Offshore Ltd A thermally insulated rigid pipe in pipe system and method
FR2853388A1 (fr) * 2003-04-01 2004-10-08 Coflexip Conduite tubulaire flexible a double enveloppe calorifugee pour le transport d'hydrocarbures

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030127148A1 (en) * 2002-01-07 2003-07-10 Watkins Lou W. Subsea insulated pipeline with pre-cured syntactic elements and methods of manufacture
GB2388641A (en) * 2002-05-17 2003-11-19 Coflexip Stena Offshore Ltd A thermally insulated rigid pipe in pipe system and method
FR2853388A1 (fr) * 2003-04-01 2004-10-08 Coflexip Conduite tubulaire flexible a double enveloppe calorifugee pour le transport d'hydrocarbures

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10030094B2 (en) 2008-07-10 2018-07-24 Huntsman International Llc Polyisocyanurate-based syntactic coating for offshore applications
WO2011161472A1 (fr) * 2010-06-26 2011-12-29 Trellborg Offshore Uk Limited Système passif de gestion thermique pour pipelines à liquides
US10197212B2 (en) 2014-11-25 2019-02-05 Halliburton Energy Services, Inc. Smart subsea pipeline
US10197197B2 (en) 2014-11-25 2019-02-05 Halliburton Energy Services, Inc. Smart subsea pipeline
US10443763B2 (en) 2014-11-25 2019-10-15 Halliburton Energy Services, Inc. Smart subsea pipeline
US10544893B2 (en) 2014-11-25 2020-01-28 Halliburton Energy Services, Inc. Smart subsea pipeline with conduits
US10683950B2 (en) 2014-11-25 2020-06-16 Halliburton Energy Services, Inc. Smart subsea pipeline with channels
GB2568889A (en) * 2017-11-29 2019-06-05 Subsea 7 Us Llc Pipeline coatings
GB2568889B (en) * 2017-11-29 2020-04-08 Subsea 7 Us Llc Pipeline coatings
US11221093B2 (en) 2017-11-29 2022-01-11 Subsea 7 (Us) Llc Coated pipeline

Also Published As

Publication number Publication date
WO2007085013A3 (fr) 2007-09-07

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