EP0034800B1 - Câble pour prospection - Google Patents

Câble pour prospection Download PDF

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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
Application number
EP81101150A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0034800A1 (fr
Inventor
Jean Marmignon
Luc Lebouc
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cables de Lyon SA
Original Assignee
Cables de Lyon SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cables de Lyon SA filed Critical Cables de Lyon SA
Publication of EP0034800A1 publication Critical patent/EP0034800A1/fr
Application granted granted Critical
Publication of EP0034800B1 publication Critical patent/EP0034800B1/fr
Expired legal-status Critical Current

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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)
EP81101150A 1980-02-25 1981-02-18 Câble pour prospection Expired EP0034800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8004053A FR2476897A1 (fr) 1980-02-25 1980-02-25 Cable pour prospection
FR8004053 1980-02-25

Publications (2)

Publication Number Publication Date
EP0034800A1 EP0034800A1 (fr) 1981-09-02
EP0034800B1 true EP0034800B1 (fr) 1984-12-19

Family

ID=9238914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101150A Expired EP0034800B1 (fr) 1980-02-25 1981-02-18 Câble pour prospection

Country Status (6)

Country Link
US (1) US4378464A (OSRAM)
EP (1) EP0034800B1 (OSRAM)
JP (1) JPS56136411A (OSRAM)
CA (1) CA1167125A (OSRAM)
DE (1) DE3167771D1 (OSRAM)
FR (1) FR2476897A1 (OSRAM)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2576709B1 (fr) * 1985-01-30 1987-02-13 Fabrication Cables Elect Cie G Cable electrique a gaine exterieure ignifuge
JPS63199414U (OSRAM) * 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 (de) * 2006-09-19 2008-03-27 Sms Demag Ag Verfahren zum Stranggießen eines Metallstranges
US9601237B2 (en) 2014-03-03 2017-03-21 Baker Hughes Incorporated Transmission line for wired pipe, and method
CN106782778A (zh) * 2017-01-09 2017-05-31 哈尔滨龙声超声技术有限公司 一种功率超声复合传输电缆
CN113963850A (zh) * 2021-10-25 2022-01-21 湖南金缆电工科技有限责任公司 一种具有异形截面的抗拉电缆

Citations (5)

* Cited by examiner, † Cited by third party
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 (fr) * 1976-01-20 1977-08-19 Int Standard Electric Corp Dispositif pour la retenue de perturbateurs a l'interieur de tubes d'echangeurs de chaleur
GB2034958A (en) * 1978-11-21 1980-06-11 Standard Telephones Cables Ltd Multi-core power cable

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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 (fr) * 1976-01-20 1977-08-19 Int Standard Electric Corp Dispositif pour la retenue de perturbateurs a l'interieur de tubes d'echangeurs de chaleur
GB2034958A (en) * 1978-11-21 1980-06-11 Standard Telephones Cables Ltd Multi-core power cable

Also Published As

Publication number Publication date
CA1167125A (fr) 1984-05-08
EP0034800A1 (fr) 1981-09-02
JPS56136411A (en) 1981-10-24
US4378464A (en) 1983-03-29
FR2476897A1 (fr) 1981-08-28
DE3167771D1 (en) 1985-01-31
FR2476897B1 (OSRAM) 1983-11-25

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