Patents by Inventor Inger-Margrete Procida

Inger-Margrete Procida has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220403957
    Abstract: A subsea installation including an unbonded flexile pipe for subsea transportation of a H2S and/or CO2 containing fluid. The unbonded flexible pipe includes from inside and out, a pressure sheath defining a bore for transportation of the fluid, a tensile armor and a liquid impervious outer sheath, wherein the tensile armor is of corrosion resistant material(s) and the tensile armor includes at least two cross wound layers of elongate armor elements, which are wound with a long pith and wherein the pipe further includes an anti-bird cage layer including at least one elongate element wound with a short pitch onto at least one of the tensile armor layers, and wherein the at least one elongate element includes or consist of steel, titanium and/or fibers of carbon, basalt, polyethylene, PVDF (polyvinylidene fluoride or polyvinylidene difluoride) PEEK (polyether ether ketone) PVC (polyvinyl chloride), LCP (liquid crystalline polymer) or any combinations thereof.
    Type: Application
    Filed: November 16, 2020
    Publication date: December 22, 2022
    Inventors: Inger-Margrete Procida, Adam Rubin, Anders Lyckegaard
  • Patent number: 11054067
    Abstract: Disclosed is an unbonded flexible pipe for subsea transportation of fluids. The pipe has a length and a centre axis and includes a plurality of layers including at least one polypropylene based layer including a modified polypropylene compound including: at least about 50% by weight of a base polypropylene (base PP) which consists of polypropylene including up to about 10% by weight of one or more co-monomers other than propylene, and at least about 1% by weight of a plastomer including a propylene and at least one co-monomer other than propylene.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: July 6, 2021
    Assignee: NATIONAL OILWELL VARCO DENMARK l/S
    Inventors: Inger-Margrete Procida, Allan Boye Hansen
  • Patent number: 10941621
    Abstract: An unbonded flexible pipe for offshore fluid transportation is disclosed. The pipe includes from inside and outwards a sealing sheath, a pressure armor layer, at least one tensile armor layer, at least one support layer and an extruded external protective polymer sheath. The at least one support layer includes at least one support strip which is helically wound with a winding angle ? of at least about 80 degrees to the longitudinal center axis to provide strip windings along the length of the pipe and the at least one support strip includes a thermoplastic vulcanizate (TPV).
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: March 9, 2021
    Assignee: NATIONAL OILWELL VARCO DENMARK I/S
    Inventor: Inger-Margrete Procida
  • Publication number: 20190309582
    Abstract: An unbonded flexible pipe for offshore fluid transportation is disclosed. The pipe includes from inside and outwards a sealing sheath, a pressure armor layer, at least one tensile armor layer, at least one support layer and an extruded external protective polymer sheath. The at least one support layer includes at least one support strip which is helically wound with a winding angle ? of at least about 80 degrees to the longitudinal center axis to provide strip windings along the length of the pipe and the at least one support strip includes a thermoplastic vulcanizate (TPV).
    Type: Application
    Filed: April 3, 2019
    Publication date: October 10, 2019
    Inventor: Inger-Margrete Procida
  • Publication number: 20180320803
    Abstract: Disclosed is an unbonded flexible pipe for subsea transportation of fluids. The pipe has a length and a centre axis and includes a plurality of layers including at least one polypropylene based layer including a modified polypropylene compound including: at least about 50% by weight of a base polypropylene (base PP) which consists of polypropylene including up to about 10% by weight of one or more co-monomers other than propylene, and at least about 1% by weight of a plastomer including a propylene and at least one co-monomer other than propylene.
    Type: Application
    Filed: November 1, 2016
    Publication date: November 8, 2018
    Inventors: Inger-Margrete Procida, Allan Boye Hansen
  • Patent number: 9772053
    Abstract: The invention relates to an unbonded flexible pipe with a longitudinal axis and which comprises from inside outwards a carcass formed by metal windings with gaps between neighboring windings, at least one covering tape and an inner sealing sheath of a polymer extruded onto the covering tape. The covering tape is helically wound with a winding direction defining a tape length direction and a tape width direction perpendicular to the tape length direction. The covering tape comprises lengthwise continuous filament yarns arranged in the tape length direction of the covering tape. The covering tape has a thickness direction perpendicular to the tape length direction. The warp yarns have a thickness determined in the thickness direction of the covering tape of about 100 ?m or less, such as of about 50 ?m or less, such as from about 5 to about 25 ?m.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: September 26, 2017
    Assignee: NATIONAL OILWELL VARCO DENMARK I/S
    Inventor: Inger-Margrete Procida
  • Publication number: 20150240971
    Abstract: The invention relates to an unbonded flexible pipe with a longitudinal axis and which comprises from inside outwards a carcass formed by metal windings with gaps between neighbouring windings, at least one covering tape and an inner sealing sheath of a polymer extruded onto the covering tape. The covering tape is helically wound with a winding direction defining a tape length direction and a tape width direction perpendicular to the tape length direction. The covering tape comprises lengthwise continuous filament yarns arranged in the tape length direction of the covering tape. The covering tape has a thickness direction perpendicular to the tape length direction. The warp yarns have a thickness determined in the thickness direction of the covering tape of about 100 ?m or less, such as of about 50 ?m or less, such as from about 5 to about 25 ?m.
    Type: Application
    Filed: August 15, 2013
    Publication date: August 27, 2015
    Applicant: National Oilwell Varco Denmark I/S
    Inventor: Inger-Margrete Procida
  • Patent number: 9040136
    Abstract: The invention relates to a flexible pipe comprising at least one polymer layer, and at least one armoring layer unbounded to said polymer layer, wherein at least one polymer layer is a cationic clay containing polymer layer of a polymer material comprising a polymer matrix and from about 0.1 to about 5% by weight of at least one cationic clay silicate. Preferred cationic clay silicates comprise kaolinite; smectite; Illite; chlorite; and synthetic cationic clays. The cationic clay silicate may e.g. be an organo-cationic clay. The cationic clay silicate may preferably be exfoliated and/or intercalated in the polymer matrix. The polymer layer may preferably comprise an inner liner, a thermally insulating layer, an anti-wear layer and/or an outer sheath or a sub-layer thereof.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: May 26, 2015
    Assignee: NATIONAL OILWELL VARCO DENMARK I/S
    Inventor: Inger-Margrete Procida
  • Patent number: 9012001
    Abstract: The invention relates to an unbonded, flexible pipe having a length and comprising from inside out, a tubular inner sealing sheath, at least one metal armor layer and an outer sealing sheath of a sealing material. The unbonded, flexible pipe comprises at least one stiffened length section comprising a stiffening cover partially or totally surrounding the outer sealing sheath in the stiffened length section. The stiffening cover comprises a layer of a stiffening material having a flexural modulus which is higher than the flexural modulus of the sealing material, wherein the flexural modulus is determined according to ISO 178.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: April 21, 2015
    Assignee: National Oilwell Varco Denmark I/S
    Inventors: Claus Dencker Christensen, Inger-Margrete Procida, Martin Damgaard Christensen
  • Publication number: 20140230946
    Abstract: The invention relates to a thermal insulating element. The element comprises a base material comprising one first series of hole configurations, said first series comprising a plurality of elongated interior holes. Each comprises a central hole axis (A) along its elongation, each central hole axis extending substantially mutually in parallel to each other along a first longitudinal direction. Each hole in a plane perpendicular to the first general longitudinal direction comprises a cross sectional hole shape. The elastic modulus E of said base material along said first longitudinal direction is equal to or larger than 1.5 GPa. The thermal insulating element is suitable for varying and high pressure environments. Further, the invention relates to armored unbonded flexible pipes comprising such a thermal insulating element. Further, the invention relates to a method of manufacturing such an element and a method of manufacturing such an armored unbonded flexible pipe.
    Type: Application
    Filed: September 19, 2012
    Publication date: August 21, 2014
    Inventors: Inger-Margrete Procida, Allan Boye Hansen
  • Patent number: 8302634
    Abstract: The invention relates to a method of producing a flexible pipe comprising a metal carcass and an internal sealing sheath extruded onto the carcass, said 5 method comprising providing a metal carcass; heating an application section of said carcass, preferably using induction heating, to an application section temperature of at least 150° C.; extruding a non-cross-linked polyethylene material comprising a peroxide having an activation temperature above 150° C. onto said application section of said carcass; cross-linking the extruded 10 polyethylene in a cross-linking zone by raising its temperature to at least the activation temperature of said peroxide by exposing the extruded polymer material to electromagnetic waves, with a wavelength of between 0.5 ?m to 0.5 m, preferably infrared radiation; and cooling said cross-linked polyethylene material to obtain the internal sealing sheath.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: November 6, 2012
    Assignee: National Oilwell Varco Denmark I/S
    Inventor: Inger-Margrete Procida
  • Publication number: 20120261017
    Abstract: The invention relates to an unbonded, flexible pipe having a length and comprising from inside out, a tubular inner sealing sheath, at least one metal armor layer and an outer sealing sheath of a sealing material. The unbonded, flexible pipe comprises at least one stiffened length section comprising a stiffening cover partially or totally surrounding the outer sealing sheath in the stiffened length section. The stiffening cover comprises a layer of a stiffening material having a flexural modulus which is higher than the flexural modulus of the sealing material, wherein the flexural modulus is determined according to ISO 178.
    Type: Application
    Filed: December 13, 2010
    Publication date: October 18, 2012
    Applicant: NATIONAL OILWELL VARCO DENMARK I/S
    Inventors: Claus Dencker Christensen, Inger-Margrete Procida, Martin Damgaard Christensen
  • Patent number: 8163364
    Abstract: The present invention relates to a flexible unbonded pipe comprising an inner liner capable of forming a barrier against outflow of a fluid which is conveyed through the pipe, and one or more armouring layers on the outer side of the inner liner. The flexible unbonded pipe comprises at least one polymer layer and at least one film layer, the polymer layer being bonded to the film layer via one or more bondings selected from the group of chemical bondings and physical bondings. The film layer may preferably be a metal film layer. The polymer layer may preferably be cross-linked polyethylene. The interfacial bonding between the polymer layer and the film layer should preferably be sufficiently strong to prevent creation of gas pockets between the layers when subjected to an increased pressure of aggressive fluids on the film side of the pipe.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: April 24, 2012
    Assignee: NKT Flexibles I/S
    Inventors: Poul Erik Braad, Inger Margrete Procida
  • Publication number: 20110232798
    Abstract: The present invention relates to a flexible unbonded pipe comprising an inner liner capable of forming a barrier against outflow of a fluid which is conveyed through the pipe, and one or more armouring layers on the outer side of the inner liner. The flexible unbonded pipe comprises at least one polymer layer and at least one film layer, said polymer layer being bonded to said film layer via one or more bondings selected from the group of chemical bondings and physical bondings. The film layer may preferably be a metal film layer, such as aluminum film, stainless steel film or duplex film. The polymer layer may preferably be cross-linked polyethylene. The interfacial bonding between the polymer layer and the film layer should preferably be sufficiently strong to prevent creation of gas pockets between the layers when subjected to an increased pressure of aggressive fluids (hydrogen sulphides, methane and carbon dioxide) on the film side of the pipe.
    Type: Application
    Filed: June 2, 2011
    Publication date: September 29, 2011
    Applicant: NKT Flexibles I/S
    Inventors: Poul Erik Braad, Inger Margrete Procida
  • Patent number: 7976920
    Abstract: The present invention relates to a flexible unbonded pipe comprising an inner liner capable of forming a barrier against outflow of a fluid which is conveyed through the pipe, and one or more armouring layers on the outer side of the inner line. The flexible unbonded pipe comprises at least one polymer layer and one film layer, said polymer layer being bonded to said film layer. The film layer may preferably be a metal film layer, such as aluminum film, stainless steel film or duplex film. The polymer layer may preferably be cross-linked polyethylene. The interfacial bonding between the polymer layer and the film layer should preferably be sufficiently strong to prevent creation of gas pockets between the layers when subjected to an increased pressure of aggressive fluids (hydrogen, sulphides, methane and carbon dioxide) on the film side of the pipe. Thereby, it is possible to protect armour layer(s) from aggressive fluids.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: July 12, 2011
    Assignee: NKT Flexibles I/S
    Inventors: Poul Erik Braad, Inger Margrete Procida
  • Publication number: 20100062202
    Abstract: The invention relates to a flexible pipe comprising at least one polymer layer, and at least one armouring layer unbounded to said polymer layer, wherein at least one polymer layer is a cationic clay containing polymer layer of a polymer material comprising a polymer matrix and from about 0.1 to about 5% by weight of at least one cationic clay silicate. Preferred cationic clay silicates comprise kaolinite; smectite; lllite; chlorite; and synthetic cationic clays. The cationic clay silicate may e.g. be an organo-cationic clay. The cationic clay silicate may preferably be exfoliated and/or intercalated in the polymer matrix. The polymer layer may preferably comprise an inner liner, a thermally insulating layer, an anti-wear layer and/or an outer sheath or a sub-layer thereof.
    Type: Application
    Filed: March 17, 2008
    Publication date: March 11, 2010
    Applicant: NKT FLEXIBLES I/S
    Inventor: Inger-Margrete Procida
  • Publication number: 20080258350
    Abstract: The invention relates to a method of producing a flexible pipe comprising a metal carcass and an internal sealing sheath extruded onto the carcass, said method comprising providing a metal carcass; heating an application section of said carcass, preferably using induction heating, to an application section temperature of at least 150° C.; extruding a non-cross-linked polyethylene material comprising a peroxide having an activation temperature above 150° C. onto said application section of said carcass; cross-linking the extruded polyethylene in a cross-linking zone by raising its temperature to at least the activation temperature of said peroxide by exposing the extruded polymer material to electromagnetic waves, with a wavelength of between 0.5 ?m to 0.5 m, preferably infrared radiation; and cooling said cross-linked polyethylene material to obtain the internal sealing sheath.
    Type: Application
    Filed: October 10, 2006
    Publication date: October 23, 2008
    Inventor: Inger-Margrete Procida
  • Publication number: 20010021426
    Abstract: The invention relates to a flexible, unbonded continuous high-pressure pipe comprised of several layers comprising at least one inner barrier layer, at least one tubular, liquid-permeable reinforcement layer surrounding the barrier layer, and a tubular outer sheath surrounding the tubular reinforcement layer(s), wherein at least one liquid-impervious barrier layer is provided by continuous extrusion of a single-phase aliphatic polyketone polymer, and a method for the production thereof.
    Type: Application
    Filed: December 15, 2000
    Publication date: September 13, 2001
    Applicant: NKT CABLES A/S
    Inventors: Inger-Margrete Procida, Bjorn Marcher
  • Patent number: 4915889
    Abstract: An electrically semi-conducting, strippable coating material for electric wires and cables is produced by intimately mixing a premix of a polyolefin with an unsaturated organic silane, a free-radical-forming organic compound and optionally plastics additives in a hot state, until the unsaturated organic silane has reacted significantly with the polyolefin and/or the copolymerizate of olefins, preferably for 1/2-30 min. at 180.degree.-230.degree. C., and subsequently admixing comminuted carbon while the mixture is still hot.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: April 10, 1990
    Assignee: NKT A/S
    Inventors: Inger-Margrete Procida, Keld V. Poulsen