EP0034800B1 - Prospecting cable - Google Patents
Prospecting cable Download PDFInfo
- Publication number
- EP0034800B1 EP0034800B1 EP81101150A EP81101150A EP0034800B1 EP 0034800 B1 EP0034800 B1 EP 0034800B1 EP 81101150 A EP81101150 A EP 81101150A EP 81101150 A EP81101150 A EP 81101150A EP 0034800 B1 EP0034800 B1 EP 0034800B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- outer conductor
- conductor
- sheath
- cable according
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 26
- -1 polypropylene Polymers 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 7
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229920000306 polymethylpentene Polymers 0.000 claims description 6
- 239000011116 polymethylpentene Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000012815 thermoplastic material Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims 2
- 239000012777 electrically insulating material Substances 0.000 claims 2
- 239000002861 polymer material Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 description 4
- 241000735470 Juncus Species 0.000 description 3
- 239000000615 nonconductor Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1891—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor comprising auxiliary conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1808—Construction of the conductors
- H01B11/1821—Co-axial cables with at least one wire-wound conductor
-
- 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
Definitions
- the cables for prospecting in particular for underwater petroleum prospecting, must resist ambient pressure, transmit energy for the control of devices placed on the bottom, and convey to the surface information coming from measuring devices. They must have excellent tensile strength and burst strength, as well as high temperatures, and remain insensitive to the action of hydrocarbons, which cause the swelling of many elastomers constituting the sheaths of conventional cables.
- Document FR-A-2 339 237 has already proposed a coaxial submarine cable comprising from its periphery towards its axis a steel wire armor, an outer sheath, an outer conductor, an electrical insulator, and an element central carrier comprising a tubular central conductor surrounding steel tension elements.
- Document US-A-3773109 has also proposed an underwater cable for prospecting comprising from its periphery towards its axis an armor formed by two layers of steel wire, a layer of semiconductor tape, insulated conductors coated in a semiconductor layer, an insulator, a braid forming an outer conductor, an insulator and conductors wound helically around a carrier monofilament, forming a central conductor and intended to transmit signals.
- Such cables do not make it possible to have a conductor forming a stable potential reference, protected against the electromagnetic fields induced by the currents flowing in the other conductors.
- the object of the present invention is to provide a coaxial cable for prospecting, making it possible to have both a conductor forming a reference of very stable potential, and conductors transmitting information from measuring devices.
- the cable according to the invention is characterized in that its axial rod forms an insulator for a conductor capable of constituting a potential reference at each end of the cable, and in that the bare conductors and the external conductor form a coaxial structure capable of be connected to power supplies of measuring devices in high frequency bands.
- the figure shows the cable in section. It comprises axially a rod 1 in a thermostable polymer, such as polypropylene, polyethylene fluoride and propylene, in particular that sold by the company of Pont de Nemours under the commercial designation FEP, or in poly-methylpentene, in particular that sold under the trade designation TPX by Imperial Chemical Industries, depending on the temperature of use, the FEP polymer suitable for the highest temperatures.
- a thermostable polymer such as polypropylene, polyethylene fluoride and propylene, in particular that sold by the company of Pont de Nemours under the commercial designation FEP, or in poly-methylpentene, in particular that sold under the trade designation TPX by Imperial Chemical Industries, depending on the temperature of use, the FEP polymer suitable for the highest temperatures.
- FEP polypropylene
- polyethylene fluoride polyethylene fluoride
- TPX poly-methylpentene
- the rod 1 constitutes the insulator of a conductor 2, used to establish a potential reference at each end of the cable, in particular for ground resistivity measurements.
- the rod 1 is surrounded by several bare tinned or silver copper wires 3, not insulated, forming the inner conductor of the coaxial cable. These wires are themselves embedded in the insulator 4 resistant to high temperatures, in the same material as the rod 1.
- the outer conductor 5 formed by a strip of tinned or silvered bare copper of which the two edges overlap and are welded or glued to each other.
- the outer conductor 5 is surrounded by a sheath 6 of thermoplastic material resistant to high temperature, for example polymethylpentene, polyethylene propylene fluoride or polyimide. This is protected by a weave of steel wires with high mechanical strength, formed by two layers 7, 8 of wires wound helically at large pitch and in the opposite direction.
- thermoplastic material resistant to high temperature for example polymethylpentene, polyethylene propylene fluoride or polyimide.
- This armor ensures the tensile strength and the burst strength of the cable, resists corrosion by sea water and prevents swelling of the sheath under the effect of hydrocarbons.
- This cable allows it to transmit high frequency bands, and therefore to carry a greater amount of information than known cables, with equal diameter.
- an external sheath can be added around the armor, which protects the armor from corrosion.
- the cable of the invention can be particularly applied to prospecting for petroleum or natural gas, but is generally suitable for all research at the bottom of boreholes made on land, at the bottom of the sea and at the bottom of lakes.
Landscapes
- Insulated Conductors (AREA)
- Communication Cables (AREA)
- Geophysics And Detection Of Objects (AREA)
Description
La présente invention concerne un câble coaxial pour prospection, comprenant de sa périphérie vers son axe
- a) une armure formée d'au moins une couche de fils d'acier enroulés hélicoïdalement,
- b) une gaine en matériau thermoplastique résistant à des températures élevées,
- c) un conducteur extérieur,
- d) un isolant électrique résistant à des températures élevées,
- e) plusieurs conducteurs nus,
- f) un jonc axial en polymère résistant à des températures élevées.
- a) armor formed from at least one layer of helically wound steel wires,
- b) a sheath of thermoplastic material resistant to high temperatures,
- c) an external conductor,
- d) an electrical insulator resistant to high temperatures,
- e) several naked drivers,
- f) an axial rod made of polymer resistant to high temperatures.
Les câbles pour prospection, notamment pour prospection pétrolière sous-marine, doivent résister à la pression ambiante, transmettre de l'énergie pour la commande d'appareils disposés sur le fond, et véhiculer vers la surface des informations provenant d'appareils de mesure. Ils doivent posséder une excellente résistance à la traction et à l'éclatement, ainsi qu'aux températures élevées, et rester insensibles à l'action des hydrocarbures, qui provoquent le gonflement de beaucoup d'élastomères constituant les gaines des câbles usuels.The cables for prospecting, in particular for underwater petroleum prospecting, must resist ambient pressure, transmit energy for the control of devices placed on the bottom, and convey to the surface information coming from measuring devices. They must have excellent tensile strength and burst strength, as well as high temperatures, and remain insensitive to the action of hydrocarbons, which cause the swelling of many elastomers constituting the sheaths of conventional cables.
On a déjà proposé dans le document FR-A-2 339 237 un câble sous-marin coaxial comprenant de sa périphérie vers son axe une armure en fils d'acier, une gaine extérieure, un conducteur extérieur, un isolant électrique, et un élément porteur central comprenant un conducteur central tubulaire entourant des éléments de tension en acier.Document FR-A-2 339 237 has already proposed a coaxial submarine cable comprising from its periphery towards its axis a steel wire armor, an outer sheath, an outer conductor, an electrical insulator, and an element central carrier comprising a tubular central conductor surrounding steel tension elements.
On a aussi proposé dans le document US-A-3773109 un câble sous-marin pour prospection comprenant de sa périphérie vers son axe une armure formée de deux couches de fil d'acier, une couche de ruban semiconducteur, des conducteurs isolés enrobés dans une couche semiconductrice, un isolant, une tresse formant conducteur extérieur, un isolant et des conducteurs enroulés hélicoïdalement autour d'un monofilament porteur, formant conducteur central et destinés à transmettre des signaux.Document US-A-3773109 has also proposed an underwater cable for prospecting comprising from its periphery towards its axis an armor formed by two layers of steel wire, a layer of semiconductor tape, insulated conductors coated in a semiconductor layer, an insulator, a braid forming an outer conductor, an insulator and conductors wound helically around a carrier monofilament, forming a central conductor and intended to transmit signals.
De tels câbles ne permettent pas de disposer d'un conducteur formant une référence de potentiel stable, protégé contre les champs électromagnétiques induits par les courants circulant dans les autres conducteurs.Such cables do not make it possible to have a conductor forming a stable potential reference, protected against the electromagnetic fields induced by the currents flowing in the other conductors.
La présente invention a pour but de procurer un câble coaxial pour prospection, permettant de disposer à la fois d'un conducteur formant une référence de potentiel bien stable, et de conducteurs transmettant des informations à partir d'appareils de mesure.The object of the present invention is to provide a coaxial cable for prospecting, making it possible to have both a conductor forming a reference of very stable potential, and conductors transmitting information from measuring devices.
Le câble selon l'invention est caractérisé en ce que son jonc axial forme isolant pour un conducteur susceptible de constituer une référence de potentiel à chaque extrémité du câble, et en ce que les conducteurs nus et le conducteur extérieur forment une structure coaxiale susceptible d'être reliée à des alimentations électriques d'appareils de mesure dans des bandes de fréquence élevées.The cable according to the invention is characterized in that its axial rod forms an insulator for a conductor capable of constituting a potential reference at each end of the cable, and in that the bare conductors and the external conductor form a coaxial structure capable of be connected to power supplies of measuring devices in high frequency bands.
Il répond en outre de préférence à au moins l'une des caractéristiques suivantes :
- - le conducteur isolé par le jonc axial est un conducteur formant référence de potentiel,
- - son jonc axial et son isolant électrique sont en poly-méthylpentène, en polyfluorure d'éthylène et de propylène ou en polypropylène.
- - sa gaine est en poly-méthylpentène, en polyfluorure d'éthylène et de propylène ou en polyimide.
- the conductor isolated by the axial rod is a conductor forming a potential reference,
- - its axial rod and its electrical insulator are made of poly-methylpentene, polyethylene fluoride and propylene or polypropylene.
- - its sheath is made of poly-methylpentene, polyethylene fluoride and propylene or polyimide.
Il est décrit ci-après, à titre d'exemple et en référence à la figure unique du dessin annexé, un câble coaxial selon l'invention.It is described below, by way of example and with reference to the single figure of the accompanying drawing, a coaxial cable according to the invention.
La figure représente le câble en coupe. Il comporte axialement un jonc 1 en un polymère thermostable, tel que du polypropylène, du polyfluorure d'éthylène et de propylène, notamment celui vendu par la société du Pont de Nemours sous la désignation commerciale FEP, ou en poly-méthylpentène, notamment celui vendu sous la désignation commerciale TPX par la société Imperial Chemical Industries, suivant la température d'utilisation, le polymère FEP convenant pour les températures les plus élevées. D'autres polymères, tels que les polyamides aromatiques, peuvent aussi convenir.The figure shows the cable in section. It comprises axially a rod 1 in a thermostable polymer, such as polypropylene, polyethylene fluoride and propylene, in particular that sold by the company of Pont de Nemours under the commercial designation FEP, or in poly-methylpentene, in particular that sold under the trade designation TPX by Imperial Chemical Industries, depending on the temperature of use, the FEP polymer suitable for the highest temperatures. Other polymers, such as aromatic polyamides, may also be suitable.
Le jonc 1 constitue l'isolant d'un conducteur 2, servant à l'établissement d'une référence de potentiel à chaque extrémité du câble, notamment pour les mesures de résistivité du sol.The rod 1 constitutes the insulator of a conductor 2, used to establish a potential reference at each end of the cable, in particular for ground resistivity measurements.
Le jonc 1 est entouré de plusieurs fils de cuivre nu étamé ou argenté 3, non isolés, formant le conducteur intérieur du câble coaxial. Ces fils sont eux-mêmes noyés dans l'isolant 4 résistant aux températures élevées, en le même matériau que le jonc 1. Autour de l'isolant 4 est enroulé le conducteur extérieur 5, formé par un feuillard de cuivre nu étamé ou argenté dont les deux bords viennent à recouvrement et sont soudés ou collés l'un à l'autre.The rod 1 is surrounded by several bare tinned or silver copper wires 3, not insulated, forming the inner conductor of the coaxial cable. These wires are themselves embedded in the insulator 4 resistant to high temperatures, in the same material as the rod 1. Around the insulator 4 is wound the
Le conducteur extérieur 5 est entouré d'une gaine 6 en matériau thermoplastique résistant à haute température, par exemple en polyméthyl- pentène, en polyfluorure d'éthylène et de propylène ou en polyimide. Celle-ci est protégée par une armure de fils d'aciers à haute résistance mécanique, formée de deux couches 7, 8 de fils enroulés hélicoïdalement à grand pas et en sens inverse.The
Cette armure assure la résistance à la traction et la résistance à l'éclatement du câble, résiste à la corrosion par l'eau de mer et empêche un gonflement de la gaine sous l'effet des hydrocarbures.This armor ensures the tensile strength and the burst strength of the cable, resists corrosion by sea water and prevents swelling of the sheath under the effect of hydrocarbons.
La structure coaxiale de ce câble lui permet de transmettre des bandes de fréquence élevées, et par suite de véhiculer une plus grande quantité d'information que les câbles connus, à égalité de diamètre.The coaxial structure of this cable allows it to transmit high frequency bands, and therefore to carry a greater amount of information than known cables, with equal diameter.
Si la surface du câble n'est pas soumise à des contraintes mécaniques très sévères, on peut ajouter autour de l'armure une gaine externe, qui protège l'armure de la corrosion.If the cable surface is not subjected to very severe mechanical stresses, an external sheath can be added around the armor, which protects the armor from corrosion.
Le câble de l'invention peut être particulièrement appliqué à la prospection de pétrole ou de gaz naturel, mais convient de manière générale pour toutes recherches au fond de forages réalisés à terre, au fond de la mer et au fond des lacs.The cable of the invention can be particularly applied to prospecting for petroleum or natural gas, but is generally suitable for all research at the bottom of boreholes made on land, at the bottom of the sea and at the bottom of lakes.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8004053 | 1980-02-25 | ||
| FR8004053A FR2476897A1 (en) | 1980-02-25 | 1980-02-25 | CABLE FOR PROSPECTION |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0034800A1 EP0034800A1 (en) | 1981-09-02 |
| EP0034800B1 true EP0034800B1 (en) | 1984-12-19 |
Family
ID=9238914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81101150A Expired EP0034800B1 (en) | 1980-02-25 | 1981-02-18 | Prospecting cable |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4378464A (en) |
| EP (1) | EP0034800B1 (en) |
| JP (1) | JPS56136411A (en) |
| CA (1) | CA1167125A (en) |
| DE (1) | DE3167771D1 (en) |
| FR (1) | FR2476897A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2576709B1 (en) * | 1985-01-30 | 1987-02-13 | Fabrication Cables Elect Cie G | ELECTRICAL CABLE WITH FLAME RETARDANT SHEATH |
| JPS63199414U (en) * | 1987-06-13 | 1988-12-22 | ||
| WO1994002948A1 (en) * | 1992-07-27 | 1994-02-03 | Motorola, Inc. | Coiled coaxial cord |
| US6472614B1 (en) * | 2000-01-07 | 2002-10-29 | Coflexip | Dynamic umbilicals with internal steel rods |
| DE102006043797A1 (en) * | 2006-09-19 | 2008-03-27 | Sms Demag Ag | Method for continuous casting of a metal strand |
| US9601237B2 (en) | 2014-03-03 | 2017-03-21 | Baker Hughes Incorporated | Transmission line for wired pipe, and method |
| CN106782778A (en) * | 2017-01-09 | 2017-05-31 | 哈尔滨龙声超声技术有限公司 | A kind of power ultrasonic multiplexing of transmission cable |
| CN113963850A (en) * | 2021-10-25 | 2022-01-21 | 湖南金缆电工科技有限责任公司 | Tensile cable with special-shaped cross section |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3482034A (en) * | 1967-03-07 | 1969-12-02 | Rochester Ropes Inc | Conductive tow cable |
| US3773109A (en) * | 1970-10-29 | 1973-11-20 | Kerr Mc Gee Chem Corp | Electrical cable and borehole logging system |
| GB1418554A (en) * | 1973-07-03 | 1975-12-24 | Wire Rope Ind Ltd | Hoisting rope |
| FR2339237A1 (en) * | 1976-01-20 | 1977-08-19 | Int Standard Electric Corp | DEVICE FOR RETAINING DISTURBERS INSIDE HEAT EXCHANGER TUBES |
| GB2034958A (en) * | 1978-11-21 | 1980-06-11 | Standard Telephones Cables Ltd | Multi-core power cable |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3286022A (en) * | 1964-02-06 | 1966-11-15 | Kerite Company | Insulated x-ray cables |
| CA961940A (en) * | 1972-01-31 | 1975-01-28 | John R. Naud | Hoisting rope |
| US3772454A (en) * | 1972-11-22 | 1973-11-13 | Steel Corp | Torque balanced cable |
| US4028660A (en) * | 1973-12-21 | 1977-06-07 | Texaco Inc. | Well logging method and means using an armored multiconductor coaxial cable |
| CA1011834A (en) * | 1975-04-18 | 1977-06-07 | Zvi Paniri | Self-supporting cable |
| US4079190A (en) * | 1977-02-03 | 1978-03-14 | International Standard Electric Corporation | Submarine coaxial cable |
| US4250351A (en) * | 1979-08-08 | 1981-02-10 | The Bendix Corporation | Cable construction |
-
1980
- 1980-02-25 FR FR8004053A patent/FR2476897A1/en active Granted
-
1981
- 1981-02-18 EP EP81101150A patent/EP0034800B1/en not_active Expired
- 1981-02-18 DE DE8181101150T patent/DE3167771D1/en not_active Expired
- 1981-02-24 JP JP2602581A patent/JPS56136411A/en active Pending
- 1981-02-24 CA CA000371613A patent/CA1167125A/en not_active Expired
- 1981-02-25 US US06/238,194 patent/US4378464A/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3482034A (en) * | 1967-03-07 | 1969-12-02 | Rochester Ropes Inc | Conductive tow cable |
| US3773109A (en) * | 1970-10-29 | 1973-11-20 | Kerr Mc Gee Chem Corp | Electrical cable and borehole logging system |
| GB1418554A (en) * | 1973-07-03 | 1975-12-24 | Wire Rope Ind Ltd | Hoisting rope |
| FR2339237A1 (en) * | 1976-01-20 | 1977-08-19 | Int Standard Electric Corp | DEVICE FOR RETAINING DISTURBERS INSIDE HEAT EXCHANGER TUBES |
| GB2034958A (en) * | 1978-11-21 | 1980-06-11 | Standard Telephones Cables Ltd | Multi-core power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3167771D1 (en) | 1985-01-31 |
| JPS56136411A (en) | 1981-10-24 |
| FR2476897B1 (en) | 1983-11-25 |
| CA1167125A (en) | 1984-05-08 |
| EP0034800A1 (en) | 1981-09-02 |
| FR2476897A1 (en) | 1981-08-28 |
| US4378464A (en) | 1983-03-29 |
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