WO2014028444A2 - Isolation d'une ligne d'écoulement à haute température - Google Patents

Isolation d'une ligne d'écoulement à haute température Download PDF

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Publication number
WO2014028444A2
WO2014028444A2 PCT/US2013/054661 US2013054661W WO2014028444A2 WO 2014028444 A2 WO2014028444 A2 WO 2014028444A2 US 2013054661 W US2013054661 W US 2013054661W WO 2014028444 A2 WO2014028444 A2 WO 2014028444A2
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WO
WIPO (PCT)
Prior art keywords
high temperature
insulation system
temperature insulation
layer
pipe
Prior art date
Application number
PCT/US2013/054661
Other languages
English (en)
Other versions
WO2014028444A3 (fr
Inventor
Andrew Sherman
Original Assignee
Powdermet, Inc.
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 Powdermet, Inc. filed Critical Powdermet, Inc.
Publication of WO2014028444A2 publication Critical patent/WO2014028444A2/fr
Publication of WO2014028444A3 publication Critical patent/WO2014028444A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • 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
    • E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
    • E21B36/003—Insulating arrangements
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
    • F16L58/1072—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sprayed layer
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2274/00—Thermoplastic elastomer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes

Definitions

  • the present invention is directed to a pipe or flow-line, more particularly to a pipe or flow-line suitable for operation at temperatures in excess of 150°C, and still more particularly to a pipe or flow-line suitable for operation at temperatures in excess of 150C and which pipe or flow-line includes a high temperature thermoplastic or rubber insulator, one or more layers of polyolefin and/or polyolefin foam, and an outer polyolefin and/or rubber layer.
  • thermal insulation systems To limit heat losses so as to avoid the formation of hydrate and wax plugs inside deep-sea production flow-lines or risers under such pressure and temperature conditions, even during production shutdowns, the pipelines need to be thermally insulated.
  • One of the most efficient types of thermal insulation systems is the use of a multilayered structure made of several materials of different thicknesses directly applied to the external surface of the steel pipe.
  • Materials currently used in thermal insulated multilayered systems for deep-sea applications include massive polymers and syntactic foams composed of hollow glass microspheres embedded in a polymer matrix. These composites must combine thermal insulation function and low buoyancy while providing good compressive strength.
  • One prior art solution to the problem of preventing blocking of the flow-lines is to cover the flow-lines with an external coating that adheres to the flow-lines and is made from a thermally-insulative material which also has the mechanical strength needed to withstand the high hydrostatic pressure encountered at great depths.
  • composite products based on an epoxy resin, polyurethane or polypropylene for example are used for this coating.
  • Such products are manufactured and sold by companies including Isotub (France), Balmoral Webco Pipeline Systems (Great Britain) and Bredero Price (USA).
  • the high mechanical strength of the coating needed at great depths was accompanied by a great increase in the density of the material used. This increase in density has an adverse effect on the coating's thermal insulation properties. The thickness of the coating must then be further increased to obtain the required thermal insulation, which renders this solution excessively costly at great depths. Also, the resistance to abrasion of such a coating is insufficient to allow flow-line installation by towing the flow-lines along the sea floor.
  • Another technique known for protecting underwater flow-lines at great depths is to surround the flow-lines with a conventional tubular protective carrier pipe capable of resisting the hydrostatic pressure.
  • the flow-lines protected by such a carrier pipe may be then installed by towing them into place.
  • the carrier pipe can contain a plurality of flow-lines, each having a thin thermal insulation coating of low density (polyurethane foam, polyethylene foam, glass wool, mineral wool, etc.).
  • the steel carrier pipe cannot resist the hydrostatic pressure unless its thickness is increased out of all proportion, which increases the weight per linear meter to the detriment of buoyancy, which is necessary for towing it into place.
  • the internal space of the sleeve between the coated flow-line(s) and the sleeve itself is filled with an inert gas, for example, nitrogen.
  • an inert gas for example, nitrogen.
  • the pressure of nitrogen in the sleeve must then be maintained throughout the service life of the flow-lines, which can be twenty years or more. This constraint is costly because the initial pressurization is costly and maintenance is difficult because the nitrogen slowly diffuses through the welds in the carrier pipe.
  • the pressure must be established during the construction of the pipeline on land, for example, on a beach. The high pressure required can then cause a dangerous explosion of the carrier pipe.
  • Prior art insulation used in undersea pipelines includes porous plastic foam (such as polyurethane foam) and multilayer insulation (primarily polypropylene and polypropylene foam insulations, also known as "wet insulation”).
  • syntactic foams have been discussed as an insulator suitable for deep-sea pipeline insulation.
  • syntactic foams are composite materials in which hollow structures, such as microspheres, are dispersed in a resin matrix.
  • microspheres cannot be introduced into the foam in a sufficient quantity to provide the requisite thermal insulation.
  • the resin binders which hold the microspheres in conventional syntactic foams are too rigid to sustain the bending associated with conventional pipeline laying techniques.
  • the present invention is directed to a pipe or flow-line suitable for operation at temperatures in excess of 150C that overcome the deficiencies of prior art pipes and flow-lines.
  • the pipe or flow-line is suitable for operation at temperatures in excess of 150C and which pipe or flow-line includes a high temperature thermoplastic or rubber insulator, one or more layers of polyolefin and/or polyolefin foam, and an outer polyolefin and/or rubber layer.
  • the pipe or flow-line is an underwater pipeline for transferring products such as, but not limited to, petroleum products (e.g., liquid petroleum products, gas petroleum products, liquid-gas petroleum products, etc.).
  • the pipe or flow-line is designed to be laid on or near the sea floor at great depths, i.e., at depths of several hundred to several thousand meters or more.
  • underwater wells usually produce liquid hydrocarbons, gaseous hydrocarbons and water simultaneously.
  • the multi-phase mixture causes the formation of gas hydrates and paraffins that can block the flow-lines in which it flows.
  • the resistance to the flow of liquid products such as, but not limited to, oil increases as the temperature decreases. This problem can be reduced by using thermally-insulated pipelines.
  • insulation products suitable for application at temperatures exceeding 150C have not been developed or described to date.
  • an insulation system for a pipe or flow-line generally includes a plurality of different layers; however, this is not required.
  • the insulation system includes one or more layers selected from the group of an adhesive layer, a high temperature insulation system, a secondary insulation layer, and a shielding layer.
  • the insulation system includes two or more layers, the two or more layers can be the same or different. If two or more of the layers are the same, layers having the same composition are separated by a layer having a different composition. The thickness of the layers can be the same or different.
  • the insulation system is at least a four-layer system that includes one or more layers selected from the group of 1) an adhesive, tie and/or corrosion resistant layer (e.g., a high temperature epoxy material, a thermoplastic material, a silicone material, a rubber material , a fluoropolymer material, etc.), 2) a first high temperature insulation system (e.g., a thermoplastic polymer material, a rubber material, and a thermoplastic flouroelastomer material, etc.), 3) a secondary insulation system (e.g., a thermoplastic polymer material, a rubber material, and a thermoplastic flouroelastomer material, etc.) and, 4) an outer solid shielding layer (e.g., polyolefin (PP) layer, etc.).
  • an adhesive, tie and/or corrosion resistant layer e.g., a high temperature epoxy material, a thermoplastic material, a silicone material, a rubber material , a fluoropolymer material, etc.
  • a first high temperature insulation system
  • the high temperature insulation system includes the first high temperature insulation system and any optional secondary insulation system.
  • the composition of the high temperature insulation system is different from the composition of the an adhesive, tie and/or corrosion resistant layer and the outer solid shielding layer; however, this is not required.
  • the first high temperature insulation system includes one or more layers of polyether-sulfone (PESU) and/or polyphenyl-sulfone (PPSU) which can be used to provide high temperature protection to the corrosion barrier.
  • PESU polyether-sulfone
  • PPSU polyphenyl-sulfone
  • the high temperature insulation system and outer solid shielding layer while designed for high temperature use, can also be used in environments that are below HOC
  • the polysulfone systems of the high temperature insulation system when used, are designed to be used for their insulation and barrier properties at temperatures from about 140C to 210C.
  • Solid, syntactic, and/or foamed PPSU and PESU can be used in the high temperature insulation system, depending on the hydrostatic pressure and specific design requirements.
  • a polyphenyl-sulfone (PPSU) layer and/or polyether-sulfone (PESU) can be used as a base coat on the pipe or flow line.
  • the thickness of the PPSU and/or PESU layer is generally at least about 2 mm, typically at least about 5 mm, and more typically about 5-100 mm; however, other thicknesses can be used.
  • the PPSU and/or PESU layer can be applied via side extrusion onto the pipe or flow-line; however, the layer can be applied by other or additional means (e.g., spray coated, painted, dipped, etc.).
  • the secondary insulation system can be formed of the same or different material from the first high temperature insulation system.
  • the secondary insulation system when used, includes polypropylene and/or polyurethane insulation.
  • the secondary insulation system can be applied onto the layer of solid, foam, and/or syntactic foam PPSU and/or PESU, and a polyolefin outer shield can be applied to the one or more layers of polypropylene and/or polyurethane insulation.
  • the secondary insulation system can be solid, foam, and/or syntactic foam.
  • the thickness of the layer of solid polypropylene and/or polyurethane insulation, when used, is generally at least about 1 mm, typically at least about 2 mm, and more typically about 5- 40 mm; however, other thicknesses can be used.
  • the thickness of the layer of solid, foam, and /or syntactic foam polypropylene and/or polyurethane insulation when used, is generally at least about 2 mm, typically at least about 5 mm, and more typically about 5-200 mm; however, other thicknesses can be used.
  • the thickness of the solid layer is generally less than the thickness of the syntactic or foam layer; however, this is not required.
  • the layer of solid, foam, and/or syntactic foam insulation is generally coated on or about the solid layer insulation; however, this is not required.
  • the thickness of the layer of outer shield e.g., polyolefin outer shield, etc.
  • the thickness of the layer of outer shield is generally at least about 1 mm, typically at least about 2 mm, and more typically about 5-40 mm; however, other thicknesses can be used.
  • the thickness of the layer of outer shield is less than at least one of the layers of the first high temperature insulation system (e.g., PPSU and/or PESU layer, etc.); however, this is not required.
  • the thickness of the layer of outer shield is less than the layer of syntactic or foam insulation of the secondary insulation system, when used; however, this is not required.
  • the outer surface of the pipe or flow-line can be optionally treated prior to applying any layers to the outer surface of the pipe or flow- line. Such optional treatments include flame oxidation and/or surface preheating.
  • one or more layers of an adhesive or tie layer and/or corrosion barrier can be optionally applied to the outer surface of the pipe or flow-line prior to applying the one or more layers of PPSU and/or PESU about the pipe.
  • an adhesive or tie layer and/or corrosion barrier under a PPSU and/or PESU coating layer is applied an adhesive or tie layer and/or corrosion barrier.
  • the adhesive or tie layer and/or corrosion barrier can be applied to the outer surface of the pipe or flow-line via side extrusion; however, the layer can be applied by other or additional means (e.g., spray coated, painted, dipped, etc.).
  • the thickness of the adhesive or tie layer and/or corrosion barrier is generally at least about 0.1 mm, typically at least about 0.5 mm, and more typically about 0.5-20 mm; however, other thickness can be used.
  • the layer can only be an adhesive or tie layer, only be a corrosion barrier, or be a combination of an adhesive or tie layer and a corrosion barrier.
  • Non- limiting examples of the adhesive or tie layer and/or corrosion barrier include an epoxy, thermoplastic, silicone, rubber and/or fluoropolymer.
  • Non-limiting specific examples include an epoxide (epoxy-silixane copolymer), a solvent-based high temperature (PPSU) adhesive mixture, and/or reactive adhesives (e.g., polysilazanes and/or BisPhenol-A, etc.).
  • solid and/or hollow microspheres can optionally be one or more of the PPSU and/or PESU coating layers to improve the tear strength and/or tensile strength and/or elongation of the PPSU and/or PESU syntactic insulators.
  • One non-limiting object of the present invention is to provide an insulation system of a pipe or flow-line that is suitable for deep-sea operation.
  • Another non-limiting object of the present invention is to provide a method for manufacturing an insulation system of a pipe or flow-line that is suitable for deep-sea operation.
  • Still yet another non-limiting object of the present invention is to provide an insulated pipe or flow-line that includes an insulation system having a plurality of different layers.
  • Another non-limiting object of the present invention is to provide an insulated pipe or flow-line that includes an insulation system having two or more layers selected from the group of an adhesive layer, a high temperature insulation system, a secondary insulation layer, and a shielding layer.
  • Still another non-limiting object of the present invention is to provide an insulated pipe or flow-line that includes an insulation system having at least four layers selected from the group of 1) an adhesive layer, 2) a high temperature insulation system (e.g., PESU layer and/or PPSU layer, etc.), 3) a layer of secondary insulation (e.g., polypropylene insulation, polyurethane insulation, etc.), 4) an outer solid shielding layer (e.g., polyolefin (PP) layer, etc.).
  • an insulation system having at least four layers selected from the group of 1) an adhesive layer, 2) a high temperature insulation system (e.g., PESU layer and/or PPSU layer, etc.), 3) a layer of secondary insulation (e.g., polypropylene insulation, polyurethane insulation, etc.), 4) an outer solid shielding layer (e.g., polyolefin (PP) layer, etc.).
  • Yet another non-limiting object of the present invention is to provide an insulated pipe or flow-line where the outer surface of the pipe or flow-line is optionally treated prior to applying any layers to the outer surface of the pipe or flow- line.
  • Still yet another non-limiting object of the present invention is to provide an insulated pipe or flow-line that includes an insulation system having one or more layers of an adhesive or tie layer and/or corrosion barrier optionally applied to the outer surface of the pipe or flow-line prior to applying one or more layers of PPSU and/or PESU about the pipe.
  • Another non-limiting object of the present invention is to provide an insulated pipe or flow-line that includes an insulation system having microspheres (e.g., ceramic and/or glass microspheres, etc.) optionally included in one or more of the PPSU and/or PESU coating layers to improve the tear strength and/or tensile strength and/or elongation of the PPSU and/or PESU syntactic insulators.
  • microspheres e.g., ceramic and/or glass microspheres, etc.
  • FIG. 1 is a cross-sectional illustration of a non-limiting insulated pipeline in accordance with the present invention.
  • FIG. 2 is a flow chart illustrating one non-limiting manufacturing process of applying insulation to a pipe in accordance with the present invention.
  • Figs. 1-2 illustrate non-limiting embodiments of the insulated pipe and method for manufacturing the insulated pipe in accordance with the present invention.
  • the present invention is directed to a pipe or flow-line suitable for operation at temperatures in excess of 150C that overcome the deficiencies of prior art pipes and flow-lines.
  • the pipe or flow-line is suitable for use as an underwater pipeline for transferring products such as, but not limited to petroleum products (e.g., liquid petroleum products, gas petroleum products, liquid-gas petroleum products, etc.).
  • the pipe or flow-line can be designed to be laid on or near the sea floor at great depths, i.e., at depths of several hundred to several thousand meters or more.
  • One non-limiting objective for the invention is the use of a high temperature insulation layer on a flow-line or other pipe to reduce the temperature from 170-2 IOC to approximately HOC, wherein traditional PP or PU insulation systems can be applied.
  • the system may optionally utilize a high temperature corrosion barrier, made from either the same material as the high temperature insulation, a siloxane or epoxide, or rubber material.
  • Various other polymers can optionally or additionally be chosen.
  • the system includes a high temperature epoxy or PPSU- containing base corrosion and adhesive layer, a PPSU massive layer for the high temperature insulation layer to reduce temperature to approximately 150C, and a polypropylene wet insulation system of sufficient insulation value to further reduce the temperature to that of the seawater.
  • a PPSU foam, a multilayer PPSU/PESU, or solid, foam and/or syntactic foam system could be produced to optimize performance and/or weight for the different temperature regimes to create a two- to four-layer high temperature insulation underlayment system, followed by a two- to five-layer traditional insulation system applied over the high temperature corrosion barrier/insulation system.
  • the insulating pipeline system includes an inner pipe 110.
  • the size, shape and composition of the pipe is non-limiting.
  • the pipe is formed of a metal material (e.g., steel, metal alloys, etc.); however, it can be appreciated that the pipe can be formed of other materials (e.g., composite materials, etc.).
  • the pipe generally has a circular cross-sectional shape and a diameter of about 6 to 22 inches and a wall thickness typically about 0.5 to 2 inches; however, other diameters and thickness can be used.
  • the pipe 110 is commonly referred to as a "flow-line” or “riser” because oil or gas, or in most cases a combination of the two, pass through the pipe and rise to the surface.
  • an anti-corrosion barrier layer 130 (e.g., plastic film, paint-like coating, etc.) can optionally be used to partially or fully cover the exterior or outer surface of the pipe.
  • the anti-corrosion barrier when used, is generally bonded to the pipe directly, or through a solvent-applied or thermally-cured adhesive or epoxide coating 120.
  • the anti-corrosion barrier which is typically PPSU, can optionally be thickened to serve as an initial insulation for temperatures up to 2 IOC; however, other or additional materials can be used.
  • One or more insulating layers 140, 150, 160, 170 can be applied to anti-corrosion barrier layer 130. As illustrated in Fig.
  • a high temperature insulation layer formed of a layer of PESU foam and/or PPSU foam or syntactic foam 140 and a layer of a dense polypropylene insulating layer or a foamed or syntactic polypropylene insulating layer 150 are applied about anti-corrosion barrier layer 130.
  • a polyolefin (PP) insulation layer 160 can be placed over the polypropylene insulating layer 150.
  • a tough, durable shield layer 170 which can include polypropylene.
  • the durable shield layer 170 hermetically seals the insulating layers and protects the insulation from damage during handling and installation.
  • the barrier and insulating layers are applied as melts through such processes as side extrusion, although those skilled in the art could devise injection molding or even tape- wrapping processes as alternative to the side extrusion process.
  • the layers can be applied to hot underlayments, where the heat is derived from preheating the pipe (to below the temperature where its properties degrade, typically 350-400F), and/or via flame, RF, IR, or other heating method.
  • solvent adhesives can be used, or high temperature adhesives such as epoxies can be used.
  • the requirements of the high temperature corrosion barrier and insulation system are high hydrolytic resistance and stability in hot water to 170-210° C (maximum use temperature), adequate ductility/elongation to failure, and decent creep resistance and property stability to the maximum use temperature.
  • High temperature rubbers, PPSU polysulfones, PESU polysulfones, and/or filler/toughened high temperature epoxies all have the potential for use in the high temperature regions, while the PPSU and PESU are the desired components for use in the present invention.
  • PPSU insulation system alternatives and enhancements to the PPSU insulation system include the use of thermal spray aluminum cathodic layers, and/or the addition of aluminum or silicate corrosion inhibitors/cathodic protection materials to the base layers.
  • Zinc additions are not desirable for the higher temperature systems, but aluminum and silicate systems are suitable for enhancing corrosion resistance under the higher temperature conditions of deepwater flow-lines and risers.
  • the ends of the pipe sections which may be 40ft "single” or 80ft “doubles" can be left open to allow for welding. These open ends generally are welded on the lay barge, and a joint coating is typically applied to prevent corrosion and to provide insulation in the joint areas.
  • Injection molding and flame/thermal spray, as well as rubber impregnation of preformed insulation blocks (alone or in combination with one another), are hereby described as suitable techniques for applying joint coatings and joint insulation systems.
  • a corrosion barrier is applied using flame spray, followed by the application of PPSU or PESU insulation via compression molding or injection molding.
  • a final outer shield layer can be then applied via tape-wrapping or flame spray, if so desired.
  • a flame spray corrosion barrier can be mated to preformed insulation (quadrants or half-shells), followed by an outer shield layer.
  • Fig. 2 One non-limiting overall process of applying a six-layer high temperature insulation system to a pipe is illustrated in Fig. 2.
  • the pipe can optionally be grit blasted prior to being coated with the insulation system.
  • the pipe can be optionally preheated prior to being coated with the insulation system.
  • the preheat temperature is generally about 60-200C.
  • an anti-corrosion barrier layer formed of a plastic film or paint-like coating can optionally be applied to the exterior or outer surface of the pipe.
  • An adhesive primer can optionally be applied to the outer surface of the pipe.
  • a layer of PPSU is applied about the outer surface of the pipe.
  • the layer of PPSU can be applied by an extrusion process.
  • the adhesive primer when used, facilitates in securing the layer of PPSU about the outer surface of the pipe.
  • a flame or IR is applied to the layer of PPSU to facilitate in securing the layer about the pipe.
  • a layer of PESU foam and/or syntactic foam is applied about the layer of PPSU.
  • the layer of PESU can be applied by an extrusion process.
  • a flame or IR is applied to the layer of PESU to facilitate in securing the layer of PESU to the layer of PPSU.
  • a layer of polypropylene is applied about the layer of PESU. Thereafter, a layer of foam or syntactic polypropylene is applied about the layer of polypropylene.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Life Sciences & Earth Sciences (AREA)
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  • Environmental & Geological Engineering (AREA)
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  • Thermal Insulation (AREA)

Abstract

L'invention concerne un tuyau ou une ligne d'écoulement destiné à une exploitation à des températures supérieures à 170°C. Le tuyau ou la ligne d'écoulement comprend une couche résistant à la corrosion et adhésive, un isolateur, destiné à des températures élevées, thermoplastique ou caoutchouteux, une ou plusieurs couches de polyoléfine et de mousse de polyoléfine et une couche externe de polyoléfine ou de caoutchouc.
PCT/US2013/054661 2012-08-15 2013-08-13 Isolation d'une ligne d'écoulement à haute température WO2014028444A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261683498P 2012-08-15 2012-08-15
US61/683,498 2012-08-15

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WO2014028444A2 true WO2014028444A2 (fr) 2014-02-20
WO2014028444A3 WO2014028444A3 (fr) 2015-07-16

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WO2015017937A1 (fr) * 2013-08-09 2015-02-12 Shawcor Ltd. Conduites isolées à haute température
WO2016090835A1 (fr) * 2014-12-09 2016-06-16 上海海隆石油化工研究所 Système multicouche d'isolation anticorrosion pour tuyaux de distribution en acier pour fonds sous-marins
WO2017123915A1 (fr) * 2016-01-15 2017-07-20 Basf Se Article composite
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PL423567A1 (pl) * 2017-11-24 2019-06-03 Kofarb Spolka Z Ograniczona Odpowiedzialnoscia Sposób ocieplania rur
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CN114593280A (zh) * 2022-03-31 2022-06-07 中建材科创新技术研究院(山东)有限公司 一种应用超级绝热材料的船舱管道及其制备方法

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WO2015017937A1 (fr) * 2013-08-09 2015-02-12 Shawcor Ltd. Conduites isolées à haute température
US9791091B2 (en) 2013-08-09 2017-10-17 Agc Chemicals Americas, Inc. High temperature field joints
US9810366B2 (en) 2013-08-09 2017-11-07 Shawcor Ltd. High temperature field joints
US10450470B2 (en) 2013-11-26 2019-10-22 Basf Se Polyurethane elastomeric composition and method of preparing the same
US10352494B2 (en) 2014-03-28 2019-07-16 Public Joint Stock Company “Transneft” Method for thermally insulating welded joints of pre-insulated pipes
CN104132221A (zh) * 2014-06-29 2014-11-05 浙江开达管业有限责任公司 基于注塑的聚氨酯保温抗菌管
WO2016090835A1 (fr) * 2014-12-09 2016-06-16 上海海隆石油化工研究所 Système multicouche d'isolation anticorrosion pour tuyaux de distribution en acier pour fonds sous-marins
US9938799B2 (en) * 2015-09-03 2018-04-10 Fmc Technologies, Inc. High temperature insulation system and method
US11034124B2 (en) 2015-11-02 2021-06-15 Agc Chemicals Americas, Inc. Insulated conduit including a fluoropolymer composition for use as a thermal insulation layer
WO2017123885A1 (fr) * 2016-01-15 2017-07-20 Basf Se Article composite
CN108602319A (zh) * 2016-01-15 2018-09-28 巴斯夫欧洲公司 复合制品
US20190017647A1 (en) * 2016-01-15 2019-01-17 Basf Se Composite article
WO2017123953A1 (fr) * 2016-01-15 2017-07-20 Basf Se Article composite
WO2017123974A1 (fr) * 2016-01-15 2017-07-20 Basf Se Article composite
US10816130B2 (en) 2016-01-15 2020-10-27 Basf Se Composite article
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US10895342B2 (en) 2016-01-15 2021-01-19 Basf Se Composite article
CN108602319B (zh) * 2016-01-15 2021-05-07 巴斯夫欧洲公司 复合制品
WO2017123915A1 (fr) * 2016-01-15 2017-07-20 Basf Se Article composite
PL423567A1 (pl) * 2017-11-24 2019-06-03 Kofarb Spolka Z Ograniczona Odpowiedzialnoscia Sposób ocieplania rur
CN114593280A (zh) * 2022-03-31 2022-06-07 中建材科创新技术研究院(山东)有限公司 一种应用超级绝热材料的船舱管道及其制备方法

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