公开(公告)号：NO20050773L

公开(公告)日：2006-08-14

申请号：NO20050773

申请日：2005-02-11

Applicant: NEXANS

Inventor： MJELSTAD EINAR ,  EKEBERG KNUT IVAR

IPC: H01B7/04 ,  D07B1/12 ,  D07B1/16 ,  F16L11/127 ,  H01B20060101 ,  H01B7/00 ,  H01B7/14 ,  H02G9/00

Abstract: Umbilical device, wherein said device has a longitudinal axis (x), and comprises: - at least one elongated electrical cable (4) and/or tube (5) element - an elongated load bearing component (1) along said longitudinal axis (x) and having an external surface (2) including at least one groove (3) disposed along said longitudinal axis (x) and parallel thereof, said component including a central core (1) encompassed by a plastic or elastic layer (2), which is provided with said at least one groove (3), characterizing in that said groove (3) is designed for holding said cable (4) and/or tube (5) element within it, while allowing said cable (4) and/or tube (5) element to move substantially radially in said groove (3) when said umbilical is bent and that said layer (2) consists of several plastic or elastic elements (2a).

公开(公告)号：NO20050772A

公开(公告)日：2006-03-13

申请号：NO20050772

申请日：2005-02-11

Applicant: NEXANS

Inventor： MJELSTAD EINAR

IPC: F16L11/00 ,  H01B7/00 ,  H01B20060101 ,  H01B7/04 ,  H01B7/14 ,  H01B9/00 ,  H01B11/22

公开(公告)号：NO320972B1

公开(公告)日：2006-02-20

申请号：NO20044129

申请日：2004-09-29

Applicant: NEXANS

Inventor： GRAFF RAGNVALD ,  MJELSTAD EINAR ,  OPSTAD KETIL ,  RAMSTAD BJORN H ,  STENSLAND MORTEN ,  AARSTEIN JON

IPC: F16L9/19

Abstract: An umbilical for subsea installation has a core of at least two longitudinal elements like cables, tubes and solid and/or hollow filling elements and a cover surrounding the core. At least one of the hollow filling elements is provided with several perforations and the cover is permeable for sea water, thereby allowing seawater to fill the interior of the filler elements as well as the interstices between the cable, tube and the filler elements and the cover when the umbilical is submerged.

公开(公告)号：NO20050753D0

公开(公告)日：2005-02-11

申请号：NO20050753

申请日：2005-02-11

Applicant: NEXANS

Inventor： MJELSTAD EINAR

IPC: H01B20060101 ,  H01B7/04 ,  H01B

Abstract: Electrical signal cable, comprising at least two insulated conductors, wherein each of the insulated conductors is arranged in a groove (2) of a longitudinal central element (1) consisting of an elastic material which allows the insulated conductors to move in radial direction when the electrical signal cable is exposed to longitudinal tensile stress.

公开(公告)号：BR0106539A

公开(公告)日：2002-10-08

申请号：BR0106539

申请日：2001-12-31

Applicant: NEXANS

Inventor： MJELSTAD EINAR ,  IVERSEN OYVIND ,  CLASEN TORUNN LUND

IPC: F16L53/00 ,  F24H1/10 ,  H05B3/40 ,  E21B17/00 ,  F16L11/22

Abstract: The present invention relates to an offshore installation including an oil/gas flowline umbilical installed between a platform-or a shore installation-and a sea bed based template and including an insulated electrical cable conductor connected in series with the steel oil/gas pipe to a power supply. The main features of the invention is that the far end interconnection between the cable conductor (or parallel cable conductors) and the pipe is grounded to seawater to provide a single point grounded system, such that all the current flows in the selected cable conductors, and the system has zero volts at the far end whereby no current is transmitted though the sea. The power supply is insulated from ground and the current is fed from the power supply through the pipe, and returns through the cable, whereby a voltage level of zero Volts is obtained at the far end where the system is grounded, and all the current is forced through the cable(s) and the pipe/flowline.

公开(公告)号：NO20006704A

公开(公告)日：2002-07-01

申请号：NO20006704

申请日：2000-12-29

Applicant: NEXANS

Inventor： MJELSTAD EINAR ,  CLASEN TORUNN LUND ,  IVERSEN OEYVIND

IPC: F16L53/00 ,  F24H1/10 ,  H05B3/40

CPC classification number: H05B3/40 ,  F16L53/37 ,  F24H1/105

Abstract: The present invention relates to an offshore installation including an oil/gas flowline umbilical installed between a platform-or a shore installation-and a sea bed based template and including an insulated electrical cable conductor connected in series with the steel oil/gas pipe to a power supply. The main features of the invention is that the far end interconnection between the cable conductor (or parallel cable conductors) and the pipe is grounded to seawater to provide a single point grounded system, such that all the current flows in the selected cable conductors, and the system has zero volts at the far end whereby no current is transmitted though the sea. The power supply is insulated from ground and the current is fed from the power supply through the pipe, and returns through the cable, whereby a voltage level of zero Volts is obtained at the far end where the system is grounded, and all the current is forced through the cable(s) and the pipe/flowline.

公开(公告)号：NO325540B1

公开(公告)日：2008-06-16

申请号：NO20050773

申请日：2005-02-11

Applicant: NEXANS

Inventor： MJELSTAD EINAR ,  EKEBERG KNUT IVAR

IPC: H01B7/04 ,  D07B1/12 ,  D07B1/16 ,  F16L11/127 ,  H01B20060101 ,  H01B7/00 ,  H01B7/14 ,  H02G9/00

Abstract: Umbilical device, wherein said device has a longitudinal axis (x), and comprises: - at least one elongated electrical cable (4) and/or tube (5) element - an elongated load bearing component (1) along said longitudinal axis (x) and having an external surface (2) including at least one groove (3) disposed along said longitudinal axis (x) and parallel thereof, said component including a central core (1) encompassed by a plastic or elastic layer (2), which is provided with said at least one groove (3), characterizing in that said groove (3) is designed for holding said cable (4) and/or tube (5) element within it, while allowing said cable (4) and/or tube (5) element to move substantially radially in said groove (3) when said umbilical is bent and that said layer (2) consists of several plastic or elastic elements (2a).

公开(公告)号：NO20050773A

公开(公告)日：2006-08-14

申请号：NO20050773

申请日：2005-02-11

Applicant: NEXANS

Inventor： MJELSTAD EINAR ,  EKEBERG KNUT IVAR

IPC: H01B7/04 ,  D07B1/12 ,  D07B1/16 ,  F16L11/127 ,  H01B20060101 ,  H01B7/00 ,  H01B7/14 ,  H02G9/00

CPC classification number: D07B1/167 ,  D07B1/12 ,  D07B1/147 ,  D07B2201/1092 ,  F16L11/127 ,  H01B7/0072 ,  H01B7/045

公开(公告)号：BRPI0504207A

公开(公告)日：2006-05-09

申请号：BRPI0504207

申请日：2005-09-29

Applicant: NEXANS

Inventor： GRAFF RAGNVALD ,  MJELSTAD EINAR ,  OPSTAD KETIL ,  RAMSTAD BJORN H ,  STENSLAND MORTEN ,  AARSTEIN JON

IPC: F16L9/19 ,  F16L7/02 ,  F16L11/22

Abstract: An umbilical for subsea installation has a core of at least two longitudinal elements like cables, tubes and solid and/or hollow filling elements and a cover surrounding the core. At least one of the hollow filling elements is provided with several perforations and the cover is permeable for sea water, thereby allowing seawater to fill the interior of the filler elements as well as the interstices between the cable, tube and the filler elements and the cover when the umbilical is submerged.

公开(公告)号：NO20050772D0

公开(公告)日：2005-02-11

申请号：NO20050772

申请日：2005-02-11

Applicant: NEXANS

Inventor： MJELSTAD EINAR

IPC: H01B20060101 ,  H01B7/04 ,  H01B9/00 ,  H01B

Abstract: Subsea umbilical comprising a number of elements such as electrically insulated power conductors (1), fiber optic elements (6), electrical signal cables (7) and fillers (8) within a common outer cover (9,10) characterized in that at least one of said electrical signal cables (7) is enclosed within a dedicated metal tube (7c), and wherein the umbilical is hung off on an offshore platform or the like and the metal tube (7c) containing the electrical signal cable (7) is hung oft separately from the umbilical.