公开(公告)号：US11339902B2

公开(公告)日：2022-05-24

申请号：US16960614

申请日：2019-01-10

Applicant: NATIONAL OILWELL VARCO DENMARK I/S

Inventor： Jesper Ries ,  Martin Halsteen ,  Lars Rohbock ,  Bo Bøgelund

IPC: F16L17/067 ,  F16L33/01

Abstract: An end-fitting and an unbonded flexible pipe, where the unbonded flexible pipe includes from the inside and out an internal pressure sheath, at least one armor layer and an outer sheath, the end-fitting further includes a sealing element. The sealing element includes a seal casing concentrically arranged around the internal pressure sheath, the seal casing includes a recess in which a first sealing element is concentrically arranged around the internal pressure sheath such that the surface of the first sealing element at least forms a line contact with the internal pressure sheath, and a second sealing element is concentrically arranged around the internal pressure sheath in the recess such that the surface of the second sealing element at least form a line contact with the surface of the seal casing and form a line contact with the surface of the first sealing element.

公开(公告)号：US20180298705A1

公开(公告)日：2018-10-18

申请号：US15525782

申请日：2015-11-09

Applicant: National Oilwell Varco Denmark I/S

Inventor： Jonas Gudme ,  Adam Rubin ,  Marie Haahr

IPC: E21B19/22 ,  F16L1/15 ,  F16L58/00 ,  F16L11/08 ,  E21B17/01

Abstract: The present invention relates to a method of installing an unbonded flexible pipe with a bore for transportation of fluid wherein the unbonded flexible pipe comprises an outer sheath, an inner sealing sheath inside the outer polymer sheath, an annulus between said outer sheath and said inner sealing sheath and at least one metallic armor layer comprising iron located in said annulus, wherein the method comprises filling at least a part of the annulus with a corrosion promoting liquid before or after installing the unbonded flexible pipe between a first installation and a second installation.

公开(公告)号：US20180231150A1

公开(公告)日：2018-08-16

申请号：US15751607

申请日：2016-08-08

Applicant: National Oilwell Varco Denmark I/S

Inventor： Kristian GLEJBØL ,  Anders STRAARUP

IPC: F16L11/08 ,  F16L53/37 ,  F16L53/38

CPC classification number: F16L11/083 ,  B32B1/08 ,  B32B2597/00 ,  F16L53/37 ,  F16L53/38 ,  F16L59/153 ,  H05B2214/03

Abstract: The present invention relates to an unbonded flexible pipe having a length and a longitudinal axis and comprising, from the inside and out, a carcass, an internal pressure sheath, at least one external amour layer, and an outer sheath, the carcass comprises at least one elongate armour element helically wound to surround the center axis with a winding degree to the longitudinal axis. The elongate armour element is electrically conductive and comprises at least a first section and a second section along the length of the pipe where the electrical resistance of the first section is different from the electrical resistance of the second section.

公开(公告)号：US20180231149A1

公开(公告)日：2018-08-16

申请号：US15751246

申请日：2016-08-05

Applicant: National Oilwell Varco Denmark I/S

Inventor： Kristian Glejbol ,  Michael Eilersen ,  Anders Straarup ,  Christian Ditlev Cappeln

IPC: F16L11/08 ,  F16L11/127 ,  F16L53/37 ,  G01K1/14 ,  G01K11/32

CPC classification number: F16L11/082 ,  F16L11/127 ,  F16L53/37 ,  G01K1/14 ,  G01K11/32 ,  G01M3/002 ,  G01M3/38 ,  G01M5/0025

Abstract: The present invention relates to a method of testing an unbonded flexible pipe. The unbonded flexible pipe has a length and a longitudinal axis and comprises, from the inside and out, an internal armour layer, an internal pressure sheath, at least one external amour layer and an outer sheath. At least one of the layers comprises an optical sensor connected to an optical monitoring system and at least one of the armour layers is a metallic and electrically conductive amour layer. The method makes it possible to test an electrical heating system and an optical sensor substantially simultaneously.

公开(公告)号：US20160290539A1

公开(公告)日：2016-10-06

申请号：US15035528

申请日：2014-11-10

Applicant: NATIONAL OILWELL VARCO DENMARK I/S

Inventor： Karsten Gorm Nielsen

IPC: F16L33/01 ,  G01M5/00 ,  G01K1/14 ,  G01K11/32 ,  F16L11/08 ,  G01D5/353

CPC classification number: F16L33/01 ,  F16L11/083 ,  G01D5/353 ,  G01K1/14 ,  G01K11/32 ,  G01M5/0025 ,  G01M5/0091

Abstract: The invention concerns an assembly including an unbonded flexible pipe and an associated end-fitting having a through opening with a centerline and a front and a rear end. The unbonded flexible pipe has an innermost sealing sheath defining a bore with a centerline and a carcass arranged inside the innermost sealing sheath. The innermost sealing sheath and the carcass extend into the through opening via the front end of the end-fitting wherein the innermost sealing sheath is fixed in an annular sealing to the end-fitting: The carcass extends beyond the annular sealing. The unbonded flexible pipe further has an optical fiber in the bore wherein the optical fiber is arranged in a groove of the carcass in at least a sealing length section where the optical fiber passes the annular sealing.

Abstract translation: 本发明涉及一种组件，其包括非粘结柔性管和相关联的端部配件，其具有带有中心线和前端和后端的通孔。 未粘合的柔性管具有最内密封护套，其限定具有设置在最内密封护套内的中心线和胎体的孔。 最内侧的密封护套和胎体通过端部配件的前端延伸到通孔中，其中最内侧的密封护套固定在端部配件的环形密封件中：胎体延伸超过环形密封。 未粘合的柔性管还在孔中具有光纤，其中光纤布置在至少一个光纤通过环形密封的密封长度部分中的胎体的凹槽中。

公开(公告)号：US20140230946A1

公开(公告)日：2014-08-21

申请号：US14347350

申请日：2012-09-19

Applicant: National Oilwell Varco Denmark I/S

Inventor： Inger-Margrete Procida ,  Allan Boye Hansen

IPC: F16L59/153 ,  B29C47/00

CPC classification number: F16L59/153 ,  B29C48/11 ,  B32B27/06 ,  B32B27/18 ,  B32B27/28 ,  B32B27/30 ,  B32B27/32 ,  F16L11/083 ,  F16L59/027 ,  Y10T428/24744

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.

Abstract translation: 本发明涉及绝热元件。 该元件包括一个基本材料，该基材包括一个第一系列孔构型，所述第一系列包括多个细长的内孔。 每个中心孔沿其伸长方向包括中心孔轴线（A），每个中心孔轴线沿着第一纵向方向彼此平行延伸。 与第一总长度方向垂直的平面中的每个孔包括横截面孔形状。 所述基材沿着所述第一纵向方向的弹性模量E等于或大于1.5GPa。 绝热元件适用于变化和高压环境。 此外，本发明涉及包含这种绝热元件的装甲未粘合柔性管。 此外，本发明涉及一种制造这种元件的方法和制造这种铠装的未结合柔性管的方法。

公开(公告)号：US20200011467A1

公开(公告)日：2020-01-09

申请号：US16485905

申请日：2018-02-19

Applicant: National Oilwell Varco Denmark I/S

Inventor： Thorsten Holst ,  Tom Larsen ,  Anders Straarup

IPC: F16L53/37 ,  F16L11/08 ,  F16L33/01 ,  F16L33/28

Abstract: An assembly comprising an end-fitting and an unbonded flexible pipe comprising several layers. The unbonded flexible pipe has an end-part entering the end-fitting at the front end and the layers of the unbonded flexible pipe being terminated in the end-fitting. The unbonded flexible pipe further comprises a first electrically conductive layer and a second electrically conductive layer, where the first electrically conductive layer is electrically insulated from the second electrically conductive layer. The end-fitting comprises a first electric zone electrically connected with the first electrically conductive layer, and a second electric zone electrically connected with the second electrically conductive layer, the first electric zone is electrically separated from the second electric zone, and the end-fitting comprises a third electric zone, the third electric zone being electrically separated from first electric zone and the second electric zone.

公开(公告)号：US10513896B2

公开(公告)日：2019-12-24

申请号：US15525782

申请日：2015-11-09

Applicant: National Oilwell Varco Denmark I/S

Inventor： Jonas Gudme ,  Adam Rubin ,  Marie Haahr

IPC: E21B17/01 ,  E21B19/22 ,  C23F13/00 ,  F16L58/00 ,  F16L11/08 ,  F16L1/15 ,  F16L11/20 ,  F16L11/04

Abstract: The present invention relates to a method of installing an unbonded flexible pipe with a bore for transportation of fluid wherein the unbonded flexible pipe comprises an outer sheath, an inner sealing sheath inside the outer polymer sheath, an annulus between said outer sheath and said inner sealing sheath and at least one metallic armor layer comprising iron located in said annulus, wherein the method comprises filling at least a part of the annulus with a corrosion promoting liquid before or after installing the unbonded flexible pipe between a first installation and a second installation.

公开(公告)号：US10113673B2

公开(公告)日：2018-10-30

申请号：US14384215

申请日：2013-03-12

Applicant: National Oilwell Varco Denmark I/S

Inventor： Kristian Glejbol

IPC: F16L11/00 ,  F16L11/08 ,  B32B1/00 ,  B32B5/26 ,  B32B37/24

Abstract: The invention relates to an elongate reinforcement element for reinforcing an unbonded flexible pipe, a method of producing the elongate reinforcement element and an unbonded flexible pipe comprising the elongate reinforcement element. The reinforcement element comprises a plurality of elongate armor strips and an elongate support element comprising a channel, wherein the plurality of elongate armor strips are arranged in the channel of the elongate support element. Preferably the elongate armor strips are arranged to be superimposed in the channel and the plurality of superimposed elongate armor strips are displaceable in relation to each other upon bending of the elongate reinforcement element.

公开(公告)号：US20180231151A1

公开(公告)日：2018-08-16

申请号：US15751632

申请日：2016-08-08

Applicant: National Oilwell Varco Denmark I/S

Inventor： Anders Straarup

IPC: F16L11/08 ,  F16L53/37 ,  F16L53/38

CPC classification number: F16L11/083 ,  F16L53/37 ,  F16L53/38

Abstract: The present invention relates to an unbonded flexible pipe having a length and a longitudinal axis and comprising, from the inside and out, a carcass made from an electrically conductive material, an internal pressure sheath made from an extruded polymer, at least one external armour layer and an outer sheath, in which the carcass is adapted for connection to an electric power source for conducting an electric current. Moreover, at least a part of the external armour layer is electrically conductive, the carcass and the external armour layer allowing a difference in electric potential to be established partly or fully over the internal pressure sheath, wherein the internal pressure sheath is partly or fully covered by a conforming cover layer made from a material which is electrically conductive and has a bulk resistance larger than the specific resistance of the electrically conductive material of the carcass.