EP1017063B1 - Structural reinforced energy and/or telecom cable - Google Patents
Structural reinforced energy and/or telecom cable Download PDFInfo
- Publication number
- EP1017063B1 EP1017063B1 EP99402737A EP99402737A EP1017063B1 EP 1017063 B1 EP1017063 B1 EP 1017063B1 EP 99402737 A EP99402737 A EP 99402737A EP 99402737 A EP99402737 A EP 99402737A EP 1017063 B1 EP1017063 B1 EP 1017063B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- cable
- telecommunications
- armor
- composite steel
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
Definitions
- the invention relates to the cables for transporting energy and structurally enhanced telecommunications by incorporating at least one reinforcement and / or armor composed of one or more layers of threads.
- Reinforcement yarns and armor yarns for energy and telecommunications can be made of stainless steel, so as to take advantage of mechanical qualities likely to be obtained with these steels and their behavior in corrosion. Indeed, a high resistance to corrosion is indispensable, especially in the case of submarine cables which are placed in a corrosive environment, as well as in the case of underground cables and cables aerial vehicles subject to difficult climatic conditions.
- EP-A-710862 thus describes an optical fiber submarine cable comprising reinforcing wires made of stainless steel.
- the invention therefore proposes a cable for transporting energy or structurally enhanced by incorporation of at least one reinforcement and / or armor having one or more layers of threads.
- the cable comprises at least one wire reinforcement or armor made of a composite steel core steel, of a type standard, covered with a layer of stainless steel.
- the cable comprises less a layer of armor made of composite steel wire.
- the cable comprises minus a reinforcing wire or armor made of proprietary composite steel Nuovinox.
- the cable comprises a tube obtained from a strip made of a composite steel having a core of steel, of a standard type, covered with a layer of stainless steel.
- the cable comprises a NUOVINOX composite steel tube made of composite steel.
- Figure 1 shows a cross-sectional view of an example of a cable telecommunications with a reinforced structure.
- Figure 2 shows a view of a section of an example of a cable of energy transport with reinforced structure.
- the example of a telecommunication cable of which a cross-section is illustrated in FIG. 1, is an optical fiber aerial cable, called a guard cable as implemented in high-voltage electricity distribution networks voltage for remote monitoring, telecontrol and / or telecommunications. It is planned to be carried by the pylons of the electric power transmission network and consequently susceptible to be subjected to rigorous climatic conditions.
- This guard wire comprises a central reinforcing wire 1 around which are cabled tubes 2 each enclosing a group of optical fibers 3. the cabled tubes are placed between the central reinforcing wire 1 and a holding tube 4.
- This tube is usually made of metal, metal alloy or material plastic.
- the wired tubes 2 are arranged, parallel to the central reinforcing wire 1, or helically wound around it.
- An armor is arranged around the holding tube 4. It is here composed of two layers of son 5, 6 joined the diameters are different for both layers.
- each armor wire is made in one composite steel.
- the wires made of composite steel are optionally interposed between aluminum alloy wires.
- the outer layer of armor can also be entirely made of aluminum alloy.
- Each composite steel wire has a core 5A or 6A made of a steel, standard type, which is covered with a layer 5B or 6B, stainless steel. It's the same here for the reinforcement thread central 1 which consists of a core 1A covered with a layer 1B.
- the composite steel used is for example a steel manufactured by the STELAX company under the trademark NUOVINOX, it is obtained from tubes stainless steel filled with crushed steel particles that are compressed under strong pressure in the tubes. The billets obtained from these tubes are then placed in an oven heated to a temperature of 1250 ° C and then stretched in the form of son whose respective sections correspond to those desired for the son of reinforcement and / or armor.
- Stainless steel layer of composite steel wire corresponds for example to a skin with a thickness of 0.5 mm.
- the heart of the sons in composite steel may possibly have superior mechanical strength to that of stainless steel, for example if this heart is made of carbon steel high strength.
- Figure 2 shows an example of a distribution cable section of armed energy that centrally features three multiple strand conductors of energy distribution 7, for example copper, each of these conductors being covered with an insulating sheath 8.
- the assembly is housed in a sheath 9, forming mattress, covered by a strip 10 possibly made of composite steel, such as NUOVINOX.
- the tube formed by the strip 10 is itself covered by a sheath armor, here in a single layer, consisting of wires 11 arranged in parallel or helically arranged around this tube. At least some of the armor's threads are made of composite steel and preferably of NUOVINOX, for the purpose of mechanical reinforcement, such as the cable armor presented in Figure 1.
Description
L'invention concerne les câbles de transport d'énergie et de télécommunications structurellement renforcés par incorporation d'au moins un fil de renfort et/ou d'une armure composée d'une ou de plusieurs couches de fils.The invention relates to the cables for transporting energy and structurally enhanced telecommunications by incorporating at least one reinforcement and / or armor composed of one or more layers of threads.
Comme il est connu de nombreux câbles de transport d'énergie et de télécommunications sont structurellement renforcés afin de mieux résister aux contraintes physiques qui sont susceptibles de leur être appliquées dans le milieu où ils sont installés. Ceci se traduit par l'association d'un ou de plusieurs fils de renfort aux fils électriquement conducteurs et/ou aux guides d'ondes de transmission optique, dans le cas de câbles aériens, pour améliorer les performances de ces câbles sur le plan mécanique et en particulier en matière de résistance à la rupture. D'une manière analogue, il est classique de renforcer mécaniquement les câbles terrestres et notamment ceux destinés à être enterrés, ainsi que les câbles sous-marins, par une armure composée d'une ou de plusieurs couches de fils plus résistants mécaniquement que les fils électriquement conducteurs, et/ou les guides d'onde de transmission que l'armure entoure.As is known from many power transmission cables and telecommunications are structurally strengthened to better withstand physical constraints that are likely to be applied in the environment where they are installed. This results in the combination of one or more reinforcing threads electrically conductive wires and / or transmission waveguides in the case of overhead cables, to improve the performance of these cables in mechanical terms and in particular in breaking strength. In a similar way, it is conventional to mechanically reinforce the cables and especially those intended for burial, as well as submarine cables, by an armor composed of one or more layers of threads plus mechanically resistant than electrically conductive wires, and / or guides transmission wave that the armor surrounds.
Les fils de renfort et les fils d'armure des câbles de transport d'énergie et de télécommunications peuvent être réalisés en acier inoxydable, de manière à profiter des qualités mécaniques susceptibles d'être obtenues avec ces aciers et de leur tenue en matière de corrosion. En effet, une grande résistance à la corrosion est indispensable, en particulier dans ie cas des câbles sous-marins qui sont placés dans une milieu corrosif, ainsi que dans le cas des câbles souterrains et des câbles aériens soumis à des contraintes climatiques difficiles. Le document EP-A-710862 décrit ainsi un câble sous-marin à fibres optiques comportant des fils de renfort en acier inoxydable.Reinforcement yarns and armor yarns for energy and telecommunications can be made of stainless steel, so as to take advantage of mechanical qualities likely to be obtained with these steels and their behavior in corrosion. Indeed, a high resistance to corrosion is indispensable, especially in the case of submarine cables which are placed in a corrosive environment, as well as in the case of underground cables and cables aerial vehicles subject to difficult climatic conditions. EP-A-710862 thus describes an optical fiber submarine cable comprising reinforcing wires made of stainless steel.
Toutefois l'utilisation de l'acier inoxydable pour la réalisation de fils de renfort ou d'armure se traduit par une augmentation significative du coût des câbles et des solutions de substitution moins onéreuses sont donc recherchées.However, the use of stainless steel for the production of reinforcement or armor results in a significant increase in the cost of cables and less expensive substitution solutions are therefore sought.
Il est connu de substituer d'autres fils, notamment en acier galvanisé ou en acier protégé par un revêtement en aluminium, aux fils en acier inoxydable pour réduire les coûts. Toutefois, la résistance à la corrosion obtenue est nettement moindre et le dégagement éventuel d'hydrogène, apparaissant notamment dans le cas de fils en acier galvanisé, empêche l'exploitation de ces fils pour la constitution de coeurs de câbles optiques de télécommunications. It is known to substitute other wires, in particular made of galvanized steel or steel protected by an aluminum coating, to stainless steel wires for lower the costs. However, the corrosion resistance obtained is clearly less and the possible release of hydrogen, appearing in particular in the case of galvanized steel wire, prevents the exploitation of these wires for constitution of optical telecommunication cable cores.
L'invention propose donc un câble de transport d'énergie ou de télécommunications structurellement renforcé par incorporation d'au moins un fil de renfort et/ou d'une armure comportant une ou plusieurs couches de fils.The invention therefore proposes a cable for transporting energy or structurally enhanced by incorporation of at least one reinforcement and / or armor having one or more layers of threads.
Selon une caractéristique de l'invention, le câble comporte au moins un fil de renfort ou d'armure constitué en un acier composite à coeur en acier, d'un type standard, recouvert d'une couche d'acier inoxydable.According to one characteristic of the invention, the cable comprises at least one wire reinforcement or armor made of a composite steel core steel, of a type standard, covered with a layer of stainless steel.
Selon une caractéristique d'une variante de l'invention, le câble comporte au moins une couche d'armure constituée de fils en acier composite.According to one characteristic of a variant of the invention, the cable comprises less a layer of armor made of composite steel wire.
Selon une caractéristique d'une variante de l'invention, le câble comporte au moins un fil de renfort ou d'armure constitué en acier composite de marque déposée NUOVINOX.According to one characteristic of a variant of the invention, the cable comprises minus a reinforcing wire or armor made of proprietary composite steel Nuovinox.
Selon une caractéristique d'une variante de l'invention, le câble comporte un tube obtenu à partir d'un feuillard constitué en un acier composite ayant un coeur en acier, d'un type standard, recouvert d'une couche d'acier inoxydable.According to one characteristic of a variant of the invention, the cable comprises a tube obtained from a strip made of a composite steel having a core of steel, of a standard type, covered with a layer of stainless steel.
Selon une caractéristique d'une variante de l'invention, le câble comporte un tube constitué en acier composite de marque déposée NUOVINOX.According to one characteristic of a variant of the invention, the cable comprises a NUOVINOX composite steel tube made of composite steel.
L'invention, ses caractéristiques et ses avantages sont précisés dans la description qui suit en liaison avec les figures évoquées ci-dessous.The invention, its features and advantages are specified in the description which follows in connection with the figures mentioned below.
La figure 1 propose une vue en coupe transversale d'un exemple d'un câble de télécommunications à structure renforcée.Figure 1 shows a cross-sectional view of an example of a cable telecommunications with a reinforced structure.
La figure 2 propose une vue d'un tronçon d'un exemple de câble de transport d'énergie à structure renforcée.Figure 2 shows a view of a section of an example of a cable of energy transport with reinforced structure.
L'exemple de câble de télécommunications dont une coupe transversale est illustrée en figure 1, est un câble aérien à fibres optiques, dit câble de garde optique, tel que mis en oeuvre dans les réseaux de distribution électrique à haute tension à des fins de télésurveillance, téléconduite et/ou télécommunications. Il est prévu pour être porté par les pylônes du réseau de transport d'énergie électrique et susceptible en conséquence d'être soumis à des conditions climatiques rigoureuses.The example of a telecommunication cable of which a cross-section is illustrated in FIG. 1, is an optical fiber aerial cable, called a guard cable as implemented in high-voltage electricity distribution networks voltage for remote monitoring, telecontrol and / or telecommunications. It is planned to be carried by the pylons of the electric power transmission network and consequently susceptible to be subjected to rigorous climatic conditions.
Ce câble de garde comporte un fil de renfort central 1 autour duquel sont
disposés des tubes câblés 2 renfermant chacun un groupe de fibres optiques 3. les
tubes câblés sont placés entre le fil de renfort central 1 et un tube de maintien 4. Ce
tube est usuellement réalisé en métal, en alliage métallique ou en matériau
plastique.This guard wire comprises a central reinforcing wire 1 around which are
Les tubes câblés 2 sont disposés, soit parallèlement au fil de renfort central
1, soit enroulés en hélice autour de lui. The
Une armure est disposée autour du tube de maintien 4. Elle est ici composée de deux couches de fils 5, 6 jointifs dont les diamètres sont différents pour les deux couches.An armor is arranged around the holding tube 4. It is here composed of two layers of son 5, 6 joined the diameters are different for both layers.
Selon l'invention au moins certains de ces fils d'armure sont réalisés en un
acier composite. Les fils réalisés en acier composite sont éventuellement intercalés
entre des fils en alliage d'aluminium. La couche extérieure d'armure peut aussi être
entièrement constituée en alliage d'aluminium. Chaque fil en acier composite
comporte un coeur 5A ou 6A en un acier, de type standard, qui est recouvert d'une
couche 5B ou 6B, en acier inoxydable. Il en est de même ici pour le fil de renfort
central 1 qui est constitué d'un coeur 1A recouvert d'une couche 1B.According to the invention at least some of these armor wires are made in one
composite steel. The wires made of composite steel are optionally interposed
between aluminum alloy wires. The outer layer of armor can also be
entirely made of aluminum alloy. Each composite steel wire
has a
L'acier composite mis en oeuvre est par exemple un acier fabriqué par la société STELAX sous la marque déposée NUOVINOX, il est obtenu à partir de tubes en acier inoxydable remplis de particules d'acier broyé qui sont comprimées sous forte pression dans les tubes. Les billettes obtenues à partir de ces tubes sont ensuite placées dans un four porté à une température de 1250°C, puis étirées sous forme de fils dont les sections respectives correspondent à celles souhaitées pour les fils de renfort et/ou d'armure.The composite steel used is for example a steel manufactured by the STELAX company under the trademark NUOVINOX, it is obtained from tubes stainless steel filled with crushed steel particles that are compressed under strong pressure in the tubes. The billets obtained from these tubes are then placed in an oven heated to a temperature of 1250 ° C and then stretched in the form of son whose respective sections correspond to those desired for the son of reinforcement and / or armor.
Ceci permet d'obtenir des fils dont la périphérie présente une résistance à la corrosion qui correspond à celle d'un fil en acier inoxydable massif, pour un coût notablement moindre. La couche d'acier inoxydable du fil en acier composite correspond par exemple à une peau d'une épaisseur de 0,5 mm. Le coeur des fils en acier composite peut éventuellement présenter une résistance mécanique supérieure à celle de l'acier inoxydable, par exemple si ce coeur est constitué d'acier au carbone à haute résistance.This makes it possible to obtain wires whose periphery has a resistance to corrosion that corresponds to that of a solid stainless steel wire, at a cost noticeably less. Stainless steel layer of composite steel wire corresponds for example to a skin with a thickness of 0.5 mm. The heart of the sons in composite steel may possibly have superior mechanical strength to that of stainless steel, for example if this heart is made of carbon steel high strength.
Dans l'exemple de câble présenté en liaison avec la figure 1, il est supposé que le fil de renfort central 1 et les fils 5 et 6 des couches d'armure sont réalisés en acier composite, pour bénéficier à la fois des avantages en matière de résistance mécanique apporté par cet acier et de l'absence de dégagement d'hydrogène souhaité en raison de la présence de fibres optiques dans le câble.In the cable example presented in connection with FIG. 1, it is assumed that the central reinforcing thread 1 and the son 5 and 6 of the armor layers are made of composite steel, to benefit both from the strengths mechanics brought by this steel and the absence of hydrogen evolution desired because of the presence of optical fibers in the cable.
Bien entendu, il est possible de réaliser d'autres câbles de télécommunications où il est possible de tirer avantage de l'utilisation d'un acier composite pour des fils de renfort ou d'armure et en particulier des câbles de télécommunications comportant des fils ou des guides d'onde coaxiaux en matériau électriquement conducteur pour la transmission de signaux sous forme électrique.Of course, it is possible to make other cables of telecommunications where it is possible to take advantage of the use of a steel composite material for reinforcement or armor yarns and in particular telecommunications having coaxial wires or coaxial waveguides of electrically conductive for the transmission of signals in electrical form.
La figure 2 présente un exemple de tronçon de câble de distribution
d'énergie armé qui comporte centralement trois conducteurs à torons multiples de
distribution d'énergie 7, par exemple en cuivre, chacun de ces conducteurs étant
revêtu d'une gaine isolante 8. L'ensemble est logé dans une gaine 9, formant
matelas, recouverte par un feuillard 10 éventuellement réalisé en acier composite,
tel que du NUOVINOX.Figure 2 shows an example of a distribution cable section
of armed energy that centrally features three multiple strand conductors of
Le tube que forme le feuillard 10 est lui-même recouvert par une gaine
d'armure, ici à une seule couche, constituée de fils 11, disposés parallèlement ou
hélicoïdalement disposés autour de ce tube. Au moins certains des fils de l'armure
sont réalisés en acier composite et préféroblement en NUOVINOX, à des fins de
renforcement mécanique, comme l'armure du câble de télécommunications présenté
sur la figure 1.The tube formed by the
Claims (5)
- Cable for power transmission or for telecommunications, structurally reinforced by incorporation of at least one reinforcement wire (1) or of an armouring comprising one or more layers of wires (5, 6, 11), characterised in that it comprises at least one reinforcement or armouring wire made of a composite steel having a core of steel (1A, 5A, 6A) of a standard type covered by a layer of stainless steel (1B, 5B, 6B).
- Cable for power transmission or for telecommunications, according to claim 1, in which at least one layer of armouring is made of wires of composite steel.
- Cable for power transmission or for telecommunications, according to one of claims 1, 2, comprising at least one reinforcement or armouring wire made of composite steel of the registered Trade Mark NUOVINOX.
- Cable for power transmission or for telecommunications, according to one of the preceding claims, wherein there is provided a tube (10) obtained by starting from a strip made of a composite steel having a core of steel of a standard type covered by a layer of stainless steel.
- Cable for power transmission or for telecommunications, according to claim 4, wherein a tube is made of composite steel of the registered Trade Mark NUOVINOX.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9816710 | 1998-12-31 | ||
| FR9816710A FR2788162B1 (en) | 1998-12-31 | 1998-12-31 | STRUCTURALLY REINFORCED ENERGY AND / OR TELECOMMUNICATIONS CABLE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1017063A1 EP1017063A1 (en) | 2000-07-05 |
| EP1017063B1 true EP1017063B1 (en) | 2005-01-05 |
Family
ID=9534744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99402737A Expired - Lifetime EP1017063B1 (en) | 1998-12-31 | 1999-11-04 | Structural reinforced energy and/or telecom cable |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6747213B2 (en) |
| EP (1) | EP1017063B1 (en) |
| DE (1) | DE69923053T2 (en) |
| FR (1) | FR2788162B1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7402753B2 (en) * | 2005-01-12 | 2008-07-22 | Schlumberger Technology Corporation | Enhanced electrical cables |
| US8413723B2 (en) * | 2006-01-12 | 2013-04-09 | Schlumberger Technology Corporation | Methods of using enhanced wellbore electrical cables |
| US8697992B2 (en) * | 2008-02-01 | 2014-04-15 | Schlumberger Technology Corporation | Extended length cable assembly for a hydrocarbon well application |
| US8525033B2 (en) * | 2008-08-15 | 2013-09-03 | 3M Innovative Properties Company | Stranded composite cable and method of making and using |
| DK2382639T3 (en) | 2008-12-29 | 2017-05-01 | Prysmian Spa | Cable for undersea transmission of electrical power with cable reinforcement transition |
| US20100252300A1 (en) * | 2009-04-06 | 2010-10-07 | Oceaneering International, Inc. | Electromagnetically Shielded Subsea Power Cable |
| US11387014B2 (en) | 2009-04-17 | 2022-07-12 | Schlumberger Technology Corporation | Torque-balanced, gas-sealed wireline cables |
| US9412492B2 (en) | 2009-04-17 | 2016-08-09 | Schlumberger Technology Corporation | Torque-balanced, gas-sealed wireline cables |
| RU2497215C2 (en) | 2009-07-16 | 2013-10-27 | 3М Инновейтив Пропертиз Компани | Composite cable designed for operation under water, and methods for its manufacture and use |
| CA2774775A1 (en) | 2009-09-22 | 2011-03-31 | Schlumberger Canada Limited | Wireline cable for use with downhole tractor assemblies |
| RU2537967C2 (en) | 2010-02-18 | 2015-01-10 | 3М Инновейтив Пропертиз Компани | Compression connector and mounting assembly for composite cables and methods for their manufacture and use |
| EP3011570A1 (en) * | 2013-06-19 | 2016-04-27 | NV Bekaert SA | Coated steel wire as armouring wire for power cable |
| CN104297875B (en) * | 2014-10-13 | 2017-07-07 | 中天科技海缆有限公司 | A kind of high pressure optoelectronic composite cable equipotential fiber unit and preparation method thereof |
| CN104637614A (en) * | 2015-01-30 | 2015-05-20 | 安徽万博电缆材料有限公司 | Cable with metal hoses for coal |
| CN104616810A (en) * | 2015-01-30 | 2015-05-13 | 安徽万博电缆材料有限公司 | Armored insulating power cable for coal mine |
| CN104715856A (en) * | 2015-02-28 | 2015-06-17 | 安徽德源电缆集团有限公司 | Drainage cable provided with hose for aerospace use |
| CN104715855A (en) * | 2015-02-28 | 2015-06-17 | 安徽德源电缆集团有限公司 | Armored power cable for aerospace use |
| US10529468B2 (en) | 2015-11-12 | 2020-01-07 | Halliburton Energy Services, Inc. | Enhanced data and power wireline |
| EP3252893B1 (en) * | 2016-05-31 | 2019-10-02 | Siemens Gamesa Renewable Energy A/S | Cable armour stripping unit |
| US10411756B2 (en) | 2017-04-06 | 2019-09-10 | United Technologies Corporation | Wave guide with fluid passages |
| US11131823B2 (en) * | 2017-11-14 | 2021-09-28 | Incab, LLC | Ground wire with optical fibers |
| CN110136881A (en) * | 2019-05-29 | 2019-08-16 | 江苏藤仓亨通光电有限公司 | A kind of layer-twisted type can optical fiber composite overhead ground wire capable of melting ice |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4006289A (en) * | 1974-08-16 | 1977-02-01 | Consolidated Products Corporation | Electromechanical cable deployable in a no-torque condition, and method |
| JPS60255923A (en) * | 1984-05-30 | 1985-12-17 | Sumitomo Electric Ind Ltd | Manufacture of stainless steel-coated steel wire |
| JPS622412A (en) * | 1985-06-28 | 1987-01-08 | 株式会社フジクラ | Optical fiber compound aerial wire |
| JPH01276507A (en) * | 1988-04-28 | 1989-11-07 | Fujikura Ltd | Lightning-resistant electric wire |
| JPH0636993B2 (en) * | 1989-04-25 | 1994-05-18 | 日本鋼管株式会社 | Method for producing stainless clad steel sheet with excellent corrosion resistance and toughness |
| US5125062A (en) * | 1990-07-19 | 1992-06-23 | Alcatel Cable | Undersea telecommunications cable having optical fibers |
| FR2673394A1 (en) * | 1991-03-01 | 1992-09-04 | Creusot Loire | PROCESS FOR PRODUCING A FLAT COMPOSITE PRODUCT, STAINLESS SHIELDING AND ARMORED TANK OBTAINED BY THIS PROCESS. |
| JPH07302518A (en) * | 1994-05-09 | 1995-11-14 | Hitachi Cable Ltd | Optical-fiber-compounded overhead wire and its manufacture |
| US5495547A (en) * | 1995-04-12 | 1996-02-27 | Western Atlas International, Inc. | Combination fiber-optic/electrical conductor well logging cable |
| US6060662A (en) * | 1998-01-23 | 2000-05-09 | Western Atlas International, Inc. | Fiber optic well logging cable |
-
1998
- 1998-12-31 FR FR9816710A patent/FR2788162B1/en not_active Expired - Fee Related
-
1999
- 1999-11-04 EP EP99402737A patent/EP1017063B1/en not_active Expired - Lifetime
- 1999-11-04 DE DE69923053T patent/DE69923053T2/en not_active Expired - Lifetime
- 1999-11-24 US US09/448,606 patent/US6747213B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1017063A1 (en) | 2000-07-05 |
| US6747213B2 (en) | 2004-06-08 |
| FR2788162A1 (en) | 2000-07-07 |
| FR2788162B1 (en) | 2001-03-30 |
| US20020027012A1 (en) | 2002-03-07 |
| DE69923053D1 (en) | 2005-02-10 |
| DE69923053T2 (en) | 2005-12-08 |
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