EP3005831B1 - Induktor zur induktiven heizung - Google Patents

Induktor zur induktiven heizung Download PDF

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Publication number
EP3005831B1
EP3005831B1 EP14766965.9A EP14766965A EP3005831B1 EP 3005831 B1 EP3005831 B1 EP 3005831B1 EP 14766965 A EP14766965 A EP 14766965A EP 3005831 B1 EP3005831 B1 EP 3005831B1
Authority
EP
European Patent Office
Prior art keywords
inductor
multifilament
conductors
area
multifilament conductor
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.)
Not-in-force
Application number
EP14766965.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3005831A1 (de
Inventor
Dirk Diehl
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP3005831A1 publication Critical patent/EP3005831A1/de
Application granted granted Critical
Publication of EP3005831B1 publication Critical patent/EP3005831B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/2406—Steam assisted gravity drainage [SAGD]
    • E21B43/2408—SAGD in combination with other methods
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
    • H05B2214/03—Heating of hydrocarbons

Definitions

  • the invention relates to an inductor for inductive heating of oil sands, oil shale or heavy oil deposits.
  • heating power in the vicinity of an inductor are typically large currents of a few hundred amperes necessary because the surrounding the inductor reservoir is usually only slightly electrically conductive.
  • the inductor is subjected to an alternating current whose frequency is typically in the range of 10 kHz to 200 kHz.
  • Such compensation can for example be done by series-connected capacitors as in the patent DE: 10 2007 040 605.5 described. Here are the current-carrying Broken conductor of the inductor and thus have interruption points.
  • a disadvantage of such a series circuit of capacitors is that the interruption point form weak points of the inductor. Partial discharges can occur at the points of interruption, which can lead to the destruction of the inductor.
  • the present invention is therefore an object of the invention to provide an improved over the prior art inductor.
  • the inductor according to the invention for the inductive heating of oil sand, oil shale or heavy oil deposits by means of current-carrying conductors comprises at least two areas and a first type connection of the two areas, the two areas each having at least a first and a second multifilament conductor.
  • the connection of the first type is configured such that the first multifilament conductor of the first region is electrically coupled via a first capacitor to the second multifilament conductor of the first region, the first multifilament conductors of the first and second regions are electrically conductively connected, and the second multifilament conductor of second region is electrically coupled via a second capacitor to the first multifilament conductor of the first region.
  • the interruption point of the inductor corresponds to the interruption of the second multifilament conductor by the first capacitor.
  • the avoidance of partial discharges succeeds by connecting the multifilament conductors via a first and second capacitor in the manner provided by claim 1.
  • conductors of the respective multifilament conductors are linked according to the invention via a common first and / or second capacitor.
  • the conductors of a multifilament conductor are always understood to mean either all conductors of the multifilament conductor or at least a part of the conductors of the multifilament conductor is to be understood.
  • first and second capacitors are connected in parallel with the capacitances of the conductors (line capacitances) of a region, so that there is a parallel connection. This increases the total capacity of the respective area, since the capacitances of capacitors connected in parallel add up.
  • the inductor according to the invention thus advantageously combines distributed capacitors with concentrated capacitors.
  • Distributed capacitors are to be understood as the line capacitances.
  • Concentrated capacitors are to be understood as meaning the first and second capacitors. It is thus proposed according to the invention a combination of concentrated and distributed capacitors, which allows a capacitive compensation of the inductor without partial discharges.
  • the inductor comprises a further third region which is electrically connected to the second region via a connection of the second type, wherein the connection of the second type is configured such that the first multifilament conductor of the second region via a further first capacitor the second multifilament conductor of the second region is electrically coupled, the second multifilament conductor of the second and third regions are electrically conductively connected, and the first multifilament conductor of the third region is electrically coupled via a further second capacitor to the second multifilament conductor of the second region.
  • a connection of the second type corresponds to a connection of the first type in which the first and second multifilament conductors are interchanged. This creates symmetry between the first and second multifilament conductors. As a result, the inductive voltage drop of the first and the second multifilament conductor is compensated.
  • the inductor comprises more than three areas, wherein alternately two areas are each connected to a connection of the first and second type.
  • this allows an inductor with several areas. It is particularly advantageous that by the connection of the first and second type partial discharges to interruptions The multifilament conductor can be avoided and thus destruction of the inductor can be prevented by partial discharges even in a plurality of areas.
  • the first and second multifilament conductors each comprise at least two conductors, wherein the conductors form the filaments of the multifilament conductor.
  • a conductor of the first multifilament conductor is always capacitively coupled to a conductor of the second multifilament conductor.
  • line capacities and thus distributed capacities are formed.
  • the first and second multifilament conductors comprise a plurality of at least 1000 and at most 5000 conductors, wherein the conductors form the filaments of the multifilament conductor.
  • the heating power of the inductor is advantageously increased significantly.
  • the individual conductors of the multifilament conductors extend substantially parallel along a longitudinal axis of the inductor.
  • the individual conductors of the multifilament conductors form an interlaced structure which extends along a longitudinal axis of the inductor.
  • the at least two multifilament conductors are capacitively coupled at least in the first and in the second region, so that a third capacitor is formed in the respective region.
  • the third capacitor advantageously corresponds to the line capacitances of the regions.
  • a total capacity of the first and second capacitors is less than a total capacity of the third capacitors.
  • Particularly advantageous is a total capacity of the first and second capacitors, which contributes less than 5% to the total capacitance of the third capacitors.
  • the first and / or second capacitor each comprise two electrodes, wherein the electrodes are formed by merging individual conductors of a multifilament conductor.
  • the first and / or second capacitor is therefore formed by merging the conductors of the multifilament conductor coupled by the first and / or second capacitor.
  • the electrodes are hemispherical in shape.
  • a gap which is arranged between the two electrodes of the first capacitor and / or of the second capacitor, comprises a ceramic or mineral insulating material.
  • the insulating material comprises at least one material from the mica group.
  • Materials of the mica group have a high dielectric strength, so that advantageously the avoidance of partial discharges at the points of interruption is additionally supported.
  • the single figure shows schematically an inductor 1, which along a longitudinal axis 40 at least four regions 20, 22, 24, 26 has.
  • adjacent regions 20, 22, 24, 26 are alternately connected to a first type connection 28 and a second type connection 30.
  • Each of the regions 20, 22, 24, 26 has two multifilament conductors 2, 4, wherein the multifilament conductors 2, 4 each comprise six conductors 2a ... f, 4a ... f.
  • the conductors 2a... F of the first multifilament conductor 2 are capacitively coupled to the conductors 4a... F of the second multifilament conductor 4.
  • Such a capacitive coupling is made possible by the parallel arrangement of the conductors 2a... F, 4a... F along the longitudinal axis 40 of the inductor 1.
  • the first type connection 28 has first and second capacitors 6, 8. Before the connection via the first and / or the second capacitor 6, 8, the multifilament conductors are brought together to form a conductor.
  • the first capacitor 6 couples the first and second Multifilament conductor 2, 4 of the first region 20.
  • the second capacitor 8 couples the first multifilament conductor 2 of the first region 20 with the merged second multifilament conductor 4 of the second region 22.
  • the first multifilament conductor 2 of the first region 20 is brought together and merged with the first multifilament conductor second of the second region 22 is electrically coupled.
  • the second area 22 is adjoined by a third area 24.
  • the second area 22 is now connected to the third area 24 via a connection of the second type 30.
  • the merged and interrupted first multifilament conductor 2 of the second region 22 is coupled via a first capacitor 6 to the merged second multifilament conductor 4 of the second region 22.
  • the merged second multifilament conductor 4 of the second region 22 is simply electrically connected to the merged second multifilament conductor 4 of the third region 24.
  • the in turn merged multifilament conductor 2 of the third region 24 is capacitively coupled to the second multifilament conductor 4 of the second region 22 via a second capacitor 8.
  • the capacitively coupled conductors 2a... F, 4a... F form distributed capacitors.
  • concentrated capacitors 6, 8 are formed by the first and second capacitors 6, 8.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Coils Or Transformers For Communication (AREA)
EP14766965.9A 2013-09-26 2014-09-12 Induktor zur induktiven heizung Not-in-force EP3005831B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310219368 DE102013219368A1 (de) 2013-09-26 2013-09-26 Induktor zur induktiven Heizung
PCT/EP2014/069513 WO2015043984A1 (de) 2013-09-26 2014-09-12 Induktor zur induktiven heizung

Publications (2)

Publication Number Publication Date
EP3005831A1 EP3005831A1 (de) 2016-04-13
EP3005831B1 true EP3005831B1 (de) 2017-08-02

Family

ID=51570490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14766965.9A Not-in-force EP3005831B1 (de) 2013-09-26 2014-09-12 Induktor zur induktiven heizung

Country Status (7)

Country Link
US (1) US10154546B2 (ru)
EP (1) EP3005831B1 (ru)
BR (1) BR112016006405A2 (ru)
CA (1) CA2925385C (ru)
DE (1) DE102013219368A1 (ru)
RU (1) RU2640794C2 (ru)
WO (1) WO2015043984A1 (ru)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013219368A1 (de) 2013-09-26 2015-03-26 Siemens Aktiengesellschaft Induktor zur induktiven Heizung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080047733A1 (en) * 2006-08-25 2008-02-28 W.E.T. Automotive Systems Ag Spiral heating wire
DE102008022176A1 (de) * 2007-08-27 2009-11-12 Siemens Aktiengesellschaft Vorrichtung zur "in situ"-Förderung von Bitumen oder Schwerstöl
DE102007040605B3 (de) 2007-08-27 2008-10-30 Siemens Ag Vorrichtung zur "in situ"-Förderung von Bitumen oder Schwerstöl
DE102008062326A1 (de) 2008-03-06 2009-09-17 Siemens Aktiengesellschaft Anordnung zur induktiven Heizung von Ölsand- und Schwerstöllagerstätten mittels stromführender Leiter
DE102009019287B4 (de) * 2009-04-30 2014-11-20 Siemens Aktiengesellschaft Verfahren zum Aufheizen von Erdböden, zugehörige Anlage und deren Verwendung
DE102009042127A1 (de) * 2009-09-18 2011-03-24 Siemens Aktiengesellschaft Induktorleiter für die berührungslose Energieübertragung sowie dessen Verwendung für Fahrzeuge
EP2623709A1 (de) * 2011-10-27 2013-08-07 Siemens Aktiengesellschaft Kondensatorvorrichtung für eine Leiterschleife einer Vorrichtung zur "in situ"-Förderung von Schweröl und Bitumen aus Ölsand-Lagerstätten.
DE102013219368A1 (de) 2013-09-26 2015-03-26 Siemens Aktiengesellschaft Induktor zur induktiven Heizung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CA2925385C (en) 2018-02-13
RU2640794C2 (ru) 2018-01-12
BR112016006405A2 (pt) 2017-08-01
CA2925385A1 (en) 2015-04-02
EP3005831A1 (de) 2016-04-13
US10154546B2 (en) 2018-12-11
DE102013219368A1 (de) 2015-03-26
WO2015043984A1 (de) 2015-04-02
US20160219652A1 (en) 2016-07-28
RU2016110775A (ru) 2017-10-31

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