US3603718A - Electrical cable structure - Google Patents

Electrical cable structure Download PDF

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Publication number
US3603718A
US3603718A US27342A US3603718DA US3603718A US 3603718 A US3603718 A US 3603718A US 27342 A US27342 A US 27342A US 3603718D A US3603718D A US 3603718DA US 3603718 A US3603718 A US 3603718A
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US
United States
Prior art keywords
sheathing
cable
conductors
electrically insulating
combination
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
Application number
US27342A
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English (en)
Inventor
Rudolf Karl Heinz Gedenk
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.)
Wintershall Dea International AG
Original Assignee
Deutsche Texaco AG
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 Deutsche Texaco AG filed Critical Deutsche Texaco AG
Application granted granted Critical
Publication of US3603718A publication Critical patent/US3603718A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/06—Gas-pressure cables; Oil-pressure cables; Cables for use in conduits under fluid pressure
    • H01B9/0611—Oil-pressure cables

Definitions

  • ABSTRACT Electrical cable structure that is adapted for downhole oil well use or for similar conditions. There are open channels under the sheath with gas permeable walls for diesipating accumulation of hydrocarbon gas.
  • the invention relates to a power supply cable, which in addition to conductors has within its sheathing a number of channels extending from one end of the cable to the other.
  • the invention concerns an electrical power supply cable for use downhole in oil wells and the like which contain a range of heavy and light hydrocarbons under superatmospheric pressure. It comprises in combination three stranded conductors each having an electrically insulating coating thereon. It also comprises an outer sheathing constructed of an electrically insulating material that will withstand heavy hydrocarbon but is penetrable by gaseous hydrocarbons, and three tubular inserts spaced between said conductors and said sheathing to form open channels within said sheathing. The said inserts have freely permeable walls. And, it comprises permeable filler material filling the spaces within said sheathing surrounding said channels.
  • FIG. of drawing is a schematic cross section view of a cable constructed according to the invention.
  • resistant to hydrocarbon mixtures such as petroleum.
  • This problem is encountered, for example, where power supply cables are used for feeding submerged pumps installed in oil wells. In that case it cannot be avoided that the sheathing of the cable is in permanent contract with oil. Since the sheathing must be flexible, it is usually made of natural or synthetic polymers. These materials include some, such as rubber, that do not resist to any hydrocarbons. Others can protect the interior of the cable from heavy hydrocarbons but are penetrated by gaseous hydrocarbons. Such materials are, for example, chlorinated rubbers, polyvinyl chloride, and polyolefins.
  • the invention achieves this object by a power supply cable having a sheathing impermeable to heavy hydrocarbons and being provided inside the sheathing with insulated conductors and with channels extending from one end of the cable to the other, the channel walls being permeable to gas, and the space between the sheathing, the channels, and the insulated conductors being filled with material permeable to gas. If these channels are left open to the atmosphere at one or both ends of the cable, any light hydrocarbons that have penetrated through the cable sheathing into the interior of the cable can enter the channels across the filling material and escape to the outside atmosphere. In this way, any buildup of gaseous hydrocarbons inside the cable and resultant destructive effect on the insulation of the conductors are prevented.
  • gaseous hydrocarbons present inside the channels could beremoved by suction or by means of a flushing medium, such as inert gas.
  • FIG. of drawing illustrates one embodiment of the invention without limiting the scope thereof. It shows a cross section of a cable structure according to the invention. There are three stranded conductors I that are each coated or covered by electrically insulating material 2. A cable sheathing 3 is constructed of flexible insulation that is material which will withstand the heavier hydrocarbons but is penetrable by gaseous hydrocarbons.
  • filling material 4 that fills the spaces inside the sheathing 3 which surround the coated conductors l and three coils 5. These coils 5 form the walls of channels 6 within the cable for permitting free flow of any hydrocarbon gases that penetrate the sheathing layer 3.
  • the filling material 4 may be made of fibers or of an appropriate synthetic foam. However, if it is made of foam the cell walls must be perforated in order to gas through the material 4.
  • the channels 6 may be formed by metal coils 5, as illustrated, or perforated tubes (not shown), or similar inserts. Moreover, it may be feasible to introduce the gas-permeable filling material 4 between the cable sheathing 3 and the conductors l in such a way that the channel-shaped cavities 6 are left open as the cable is being constructed.
  • the cable sheathing 3 may, for example, consist of polyolefins, polyfluorinated hydrocarbons, polyamides, polyethers, etc. Furthermore, it might be protected by a surrounding metal wire netting (not shown) if desired.
  • An electrical cable comprising in combination at least one conductor having an electrically insulating coating thereon,
  • said sheathing being impervious to liquid hydrocarbons
  • At least one open channel within said sheathing for carrying gas away from the interior thereof.
  • An electrical cable according to claim 1 further including gas permeable material filling the spaces between said conductor, said sheathing and said channel.
  • a cable according to claim 2 wherein said combination comprises a plurality of said conductors.
  • a cable according to claim 3 comprising a power supply cable having three conductors
  • An electrical power supply cable for use downhole in oil wells and the like containing a range of heavy and light hydrocarbons under superatmospheric pressure, comprising in combination three stranded conductors each having an electrically insulating coating thereon,
  • an outer sheathing constructed of an electrically insulating material that will withstand heavy hydrocarbons but is penetrable by gaseous hydrocarbons
  • said inserts having freely permeable walls
  • permeable filler material filling the spaces within said sheathing surrounding said channels.

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  • Insulated Conductors (AREA)
US27342A 1969-04-14 1970-04-10 Electrical cable structure Expired - Lifetime US3603718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1918841A DE1918841C3 (de) 1969-04-14 1969-04-14 Stromkabel mit inneren Kanälen

Publications (1)

Publication Number Publication Date
US3603718A true US3603718A (en) 1971-09-07

Family

ID=5731128

Family Applications (1)

Application Number Title Priority Date Filing Date
US27342A Expired - Lifetime US3603718A (en) 1969-04-14 1970-04-10 Electrical cable structure

Country Status (4)

Country Link
US (1) US3603718A (de)
AT (1) AT292815B (de)
DE (1) DE1918841C3 (de)
FR (1) FR2039160B1 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385021A (en) * 1981-07-14 1983-05-24 Mobil Oil Corporation Method for making air hose bundles for gun arrays
US4707569A (en) * 1985-06-03 1987-11-17 Japan Styrene Paper Corporation Multi-conductor cable
US4997992A (en) * 1989-06-26 1991-03-05 Low William E Low distortion cable
US5110999A (en) * 1990-12-04 1992-05-05 Todd Barbera Audiophile cable transferring power substantially free from phase delays
US5384430A (en) * 1993-05-18 1995-01-24 Baker Hughes Incorporated Double armor cable with auxiliary line
US6834716B2 (en) 1998-10-01 2004-12-28 William Uhlenkott Water well including a pump
US20060042818A1 (en) * 2004-08-24 2006-03-02 Paul Bello Submersible pump cable with conductive air line
US20060042817A1 (en) * 2004-08-24 2006-03-02 Paul Bello Submersible pump cable with air line
US7317369B2 (en) * 2004-09-11 2008-01-08 Bruker Biospin Gmbh Superconductor magnet coil configuration
US20090095525A1 (en) * 2005-04-28 2009-04-16 Autonetworks Technologies, Ltd. Distributive Conductor
US20130269966A1 (en) * 2010-12-15 2013-10-17 Robert Emme High Voltage Electric Cable
US20170005544A1 (en) * 2015-07-02 2017-01-05 Hamilton Sundstrand Corporation Supplemental cooling of cabin air compressor motor
US10766374B2 (en) * 2018-09-17 2020-09-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Motor vehicle charging cable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4683944A (en) * 1985-05-06 1987-08-04 Innotech Energy Corporation Drill pipes and casings utilizing multi-conduit tubulars

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1883648A (en) * 1928-07-09 1932-10-18 Pirelli Multicore oil-filled high tension electric cable
US2799720A (en) * 1952-04-09 1957-07-16 Pirelli Gas-pressure electric cables
US2910524A (en) * 1956-05-25 1959-10-27 Plastic Wire & Cable Corp Breather cable
US3149199A (en) * 1959-04-08 1964-09-15 Montedison Spa Electrical conductors and cables for use in highly reactive media and insulated witha vulcanized polyolefin
US3517110A (en) * 1968-04-01 1970-06-23 North American Rockwell Flexible underwater riser containing electrical conductors and material conduits
US3526086A (en) * 1968-04-12 1970-09-01 North American Rockwell Multiconduit underwater line

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2082649A (en) * 1933-09-18 1937-06-01 Siemens Ag Method of and means for exerting an artificial pressure on the insulation of electric cables

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1883648A (en) * 1928-07-09 1932-10-18 Pirelli Multicore oil-filled high tension electric cable
US2799720A (en) * 1952-04-09 1957-07-16 Pirelli Gas-pressure electric cables
US2910524A (en) * 1956-05-25 1959-10-27 Plastic Wire & Cable Corp Breather cable
US3149199A (en) * 1959-04-08 1964-09-15 Montedison Spa Electrical conductors and cables for use in highly reactive media and insulated witha vulcanized polyolefin
US3517110A (en) * 1968-04-01 1970-06-23 North American Rockwell Flexible underwater riser containing electrical conductors and material conduits
US3526086A (en) * 1968-04-12 1970-09-01 North American Rockwell Multiconduit underwater line

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385021A (en) * 1981-07-14 1983-05-24 Mobil Oil Corporation Method for making air hose bundles for gun arrays
US4707569A (en) * 1985-06-03 1987-11-17 Japan Styrene Paper Corporation Multi-conductor cable
US4997992A (en) * 1989-06-26 1991-03-05 Low William E Low distortion cable
US5110999A (en) * 1990-12-04 1992-05-05 Todd Barbera Audiophile cable transferring power substantially free from phase delays
US5384430A (en) * 1993-05-18 1995-01-24 Baker Hughes Incorporated Double armor cable with auxiliary line
US20060065405A1 (en) * 1998-10-01 2006-03-30 William Uhlenkott Method for installing a water well pump
US6834716B2 (en) 1998-10-01 2004-12-28 William Uhlenkott Water well including a pump
US6988555B2 (en) * 1998-10-01 2006-01-24 William Uhlenkott Method for installing a water well pump
US20050039924A1 (en) * 1998-10-01 2005-02-24 William Uhlenkott Method for installing a water well pump
US7193150B2 (en) * 2004-08-24 2007-03-20 Paul Bello Submersible pump cable with air line
US20060042817A1 (en) * 2004-08-24 2006-03-02 Paul Bello Submersible pump cable with air line
US7119274B2 (en) * 2004-08-24 2006-10-10 Paul Bello Submersible pump cable with conductive air line
US20060042818A1 (en) * 2004-08-24 2006-03-02 Paul Bello Submersible pump cable with conductive air line
US7317369B2 (en) * 2004-09-11 2008-01-08 Bruker Biospin Gmbh Superconductor magnet coil configuration
US20090095525A1 (en) * 2005-04-28 2009-04-16 Autonetworks Technologies, Ltd. Distributive Conductor
US7750241B2 (en) * 2005-04-28 2010-07-06 Autonetworks Technologies, Ltd. Distributive conductor
US20130269966A1 (en) * 2010-12-15 2013-10-17 Robert Emme High Voltage Electric Cable
US8847069B2 (en) * 2010-12-15 2014-09-30 Abb Technology Ag High voltage electric cable
US20170005544A1 (en) * 2015-07-02 2017-01-05 Hamilton Sundstrand Corporation Supplemental cooling of cabin air compressor motor
US10174767B2 (en) * 2015-07-02 2019-01-08 Hamilton Sundstrand Corporation Supplemental cooling of cabin air compressor motor
US10766374B2 (en) * 2018-09-17 2020-09-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Motor vehicle charging cable

Also Published As

Publication number Publication date
AT292815B (de) 1971-09-10
FR2039160B1 (de) 1974-10-31
DE1918841C3 (de) 1975-05-15
DE1918841B2 (de) 1974-10-03
FR2039160A1 (de) 1971-01-15
DE1918841A1 (de) 1970-10-15

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