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EP2315910A2 - Installation pour une extraction in situ d'une substance contenant du carbone - Google Patents

Installation pour une extraction in situ d'une substance contenant du carbone

Info

Publication number
EP2315910A2
EP2315910A2 EP09780723A EP09780723A EP2315910A2 EP 2315910 A2 EP2315910 A2 EP 2315910A2 EP 09780723 A EP09780723 A EP 09780723A EP 09780723 A EP09780723 A EP 09780723A EP 2315910 A2 EP2315910 A2 EP 2315910A2
Authority
EP
European Patent Office
Prior art keywords
reservoir
inductor
plant according
conductor
return
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.)
Granted
Application number
EP09780723A
Other languages
German (de)
English (en)
Other versions
EP2315910B1 (fr
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
Priority to PL09780723T priority Critical patent/PL2315910T3/pl
Publication of EP2315910A2 publication Critical patent/EP2315910A2/fr
Application granted granted Critical
Publication of EP2315910B1 publication Critical patent/EP2315910B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
    • E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
    • 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
    • H05B6/46—Dielectric heating
    • H05B6/62—Apparatus for specific applications
    • 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 a plant for the in-situ recovery of a carbonaceous substance from an underground deposit with reduction of its viscosity.
  • a device is used in particular for the production of bitumen or heavy oil from a reservoir under an overburden, as is the case with oil shale and / or oil sand deposits, for example in Canada.
  • the increase in fluidity can be done firstly by introducing solvents or diluents and / or on the other by heating or melting of the heavy oil or bitumen, for which by means of pipe systems, which are introduced through holes, heating takes place.
  • SAGD Steam Assisted Gravity Drainage
  • water vapor which may be added to the solvent, is pressed under high pressure through a tube extending horizontally within the seam.
  • the heated, molten and detached from the sand or rock bitumen or heavy oil seeps to a second about 5 m deeper located pipe through that the promotion of the liquefied bitumen or heavy oil takes place, wherein the distance from the injector and production pipe is dependent on reservoir geometry.
  • the steam has to fulfill several tasks at the same time, namely the introduction of heating energy for liquefaction, the detachment of the sand and the pressure build-up in the reservoir, on the one hand to make the reservoir geomechanically permeable to bitumen transport (permeability) and, on the other hand, the promotion of bitumen without to allow additional pumps.
  • the SAGD process starts by steam being introduced through both pipes for typically three months in order first to liquefy the bitumen in the space between the pipes as quickly as possible. Thereafter, the steam is introduced only through the upper tube and the promotion through the lower tube can begin.
  • Electrolytes take place, whereby the impedance is changed. This requires corresponding electrolyte injection devices that are expensive to integrate in the inductors or require additional costly drilling.
  • the object is achieved by the totality of the features of claim 1. Further developments are specified in the subclaims.
  • the invention relates to an induction-heated system in which the outgoing and return conductors for the inductor lines are guided substantially vertically and have a small lateral distance of at most 10 m. Preferably, however, the distance is less than 5 m.
  • parallel bores can be present in this distance in the cover structure, so that return conductors are guided individually for this purpose.
  • the forward and return conductors of the induction conductors can be separate, laterally side-by-side guided lines.
  • You can also form stranded cables and especially coaxial cables.
  • coaxial cables can be guided in a closely matched wellbore.
  • a branch (so-called Y-junction) is present at the end of the merged lines.
  • the outgoing, horizontally guided inductor lines can run in the same direction but also in opposite directions.
  • the inductor lines running horizontally in the deposit can have different distances in regions.
  • it can
  • the combined in a pair of lines vertically extending forward and return conductors can - as already mentioned - advantageously in a single hole, which reaches down to the reservoir, bring first to branch in the reservoir ('Y-junction').
  • the return conductor pair can be made stranded or coaxial and isolated individually or together - in a continuous insulation.
  • the use of a single borehole, which extends into the reservoir, is also possible for several pairs of return / return conductors.
  • a specialized, optimized to the respective section embodiment of the conductor arrangement is possible.
  • a first section - from the oscillator to the branch - can be designed with particularly low losses, for example by means of HF stranded conductors, with a possibly reduced requirement for temperature resistance.
  • a second section is formed by the single-insulated conductor acting as an inductor. In this case, increased mechanical requirements for installation and increased thermal requirement for operation must be taken into account, while low ohmic conductor losses are secondary.
  • a third section is formed by the electrode, a non-insulated conductor end, which due to its length and z. B. by means of surrounding salt water has a low contact resistance to the reservoir.
  • compensated conductors are mandatory in the section of the inductor lines routed in the reservoir due to its length and the usually large distance (> 5 m) between the inductors.
  • sections I and III u. U. be waived on compensated conductors, if the sections are short ( ⁇ 20 m) or the distance between the return and return conductors is very low ( ⁇ 0.5 m). Very small distance, and associated low inductance of the line section is particularly in stranded or coaxial forward and return conductors.
  • Power generators are needed in the invention.
  • a favorable embodiment of power generators in the considered frequency range are power converters - as described in detail in the above-mentioned German patent application AZ 10 2007 008 292.6.
  • converters deliver considerable proportions of higher harmonics, ie power at integer multiples of the fundamental frequency.
  • it is proposed in a specific refinement to operate several adjacent pairs of return / return conductors, which are predominantly resonant at the fundamental frequency, and some which are resonant in the case of harmonics, to operate in parallel on one or a group of inverters, so that the power of the inverter is also used at the higher harmonics.
  • the single compensated inductor consists of sectionally repeating, capacitively coupled conductor groups whose inductance and capacitance coverings and length determines the resonance frequency.
  • conductor cross-section configurations are proposed whose current density distributions on both conductors are rotationally symmetric or approximately rotationally symmetrical to the inductor axis.
  • the two end-grounded inductors can diverge in different, for example, opposite directions.
  • the array of inductors according to item 4 is suitable for heating the reservoir over a large area.
  • it is proposed to arrange a plurality of injection and production tubes perpendicular to the orientation (and below) of the inductors.
  • the inductors do not generally have to run parallel to the production and injection tubes, but rather oriented at an angle, in particular perpendicular to the production tube - ie. in the transverse direction.
  • This allows a variation de heating power along the production pipes and in particular an early start of delivery, since at the intersections of inductors and production pipes, the distance between these is very low.
  • the vertical orientation is only the special case.
  • salt water can alternatively be introduced by means of vertical bores to the inductor ends to be ground, ie electrode sections.
  • cooling medium and electrolyte may be different liquids.
  • the cooling medium can circulate in the inductor (eg, coaxial outflow and return lines for the cooling medium) and be circulated in a closed cooling circuit with a heat exchanger. Please refer to the earlier application AZ 10 2007 008 292.6.
  • the Salzwasserinjetation for better grounding a row of an inductor array according to Pkt.6 can alternatively be done by means of a locally slotted tube, which is introduced through a horizontal bore and oriented perpendicular to the inductors, for several inductors together.
  • the electrode sections can also be led into water-bearing layers outside the reservoir (above or below) in order to realize a connection with good electrical conductivity to the surrounding soil, which is possible with less expenditure on equipment.
  • water-bearing layers are contained in over- and / or underburden.
  • the laying of a distance-optimized inductor can also be done in addition to existing inductors.
  • an electrical connection can be made with outgoing or return conductors formerly laid inductors, the operation in the series resonance can be done by frequency adjustment on the generator / inverter.
  • the variation in distance can take place in the vertical and / or horizontal direction, which makes it possible to adapt the heating power distribution to the reservoir geometry.
  • the new plant has considerable advantages over the plants or devices previously known from the prior art and also in comparison to the plants or devices described in the earlier, unpublished patent applications. These are in detail: To 1: The magnetic fields of the oppositely energized forward and return conductors are almost completely compensated so that only small eddy currents are induced in the immediate vicinity of the overburden ("overburdening") and thus the power loss is drastically reduced.
  • overburdening overburdening
  • the coaxial design of the forward and return conductors from the power loss view is ideal, but requires increased effort at the junction. In the coaxial arrangement, the environment is completely field-free.
  • this also permits the use of electrically conductive and magnetic materials (steel) for covering the return / return conductor pair or a lining of the bore with steel pipes in the section of the conductor pair. Furthermore, a hole is saved. Furthermore, the emission of electromagnetic waves is considerably reduced and the shielding of the oscillator at the entry point is made more compact or easier, which reduces the exposure range in which no operating personnel may reside.
  • electrically conductive and magnetic materials steel
  • the grounding of the conductor ends leads to electrical closing of the conductor loop, without a direct electrical connection of the conductor ends is necessary.
  • the ladder configuration requires no special drilling techniques, but comes with the existing standard drilling techniques.
  • the isolated inductor section holds the current in the conductor and prevents premature shorting across the reservoir, which allows a uniform loss distribution along the inductor.
  • Ad 4 This avoids wavelength effects that would otherwise lead to variations in the current along the conductors and thus to a corresponding variation in the power dissipation density.
  • Re 5 The power in the higher harmonics of the inverter generators can be used for reservoir heating, which would otherwise be incurred as losses in the inverter and could even destroy it.
  • the rotationally symmetric current distribution provides, in the event that there is no current density in a certain radius around the inductor axis, a field-free Induktorinneres that for passing the salt water or mechanical reinforcement of the inductor by z.
  • a steel cable can be used without causing eddy current losses occur in salt water or steel rope, i. without further heating of the inductor occurs.
  • the inductor length In the case of diverging inductors as well as continuation in the x-direction and parallel injection and production tubes, the inductor length only needs to be a fraction of the length of the tubes, which during manufacture, installation (maximum insertion length is of stiffness of the tube) Depending on inductors and possibly less than tubes) and operation (reduction of the voltage requirements to the generators and reduction of pressure requirements for salt water injection) is advantageous.
  • the adjustability of the phase Senlage the generators relative to each other allows the influence of the return currents through the reservoir and thus the power loss density distribution in the reservoir.
  • FIG. 5 Table Row 1, Distance 0.25 m), which is desirable because heating of the top coat is not intended.
  • the return and return conductors are routed at different distances, so that the heating power can be adapted to the respective section. The larger the distance, the higher the heating power per length.
  • Table ( Figure 5) are heating powers for a typical reservoir is listed for different distances from the return conductor, which results when energized with 825 A (peak) @ 20 kHz.
  • Today's drilling technology allows the distances to be reduced to 5m, whereby a variation of the heating power in the considered reservoir by a factor of 80 can be achieved (111 W / m with 5 m distance, 8874 W / m with 100 m distance) with the same current the sections, which is mandatory due to the series connection. This makes it possible to carry out a heating capacity which is adapted in sections to geological and conveying conditions of the reservoir.
  • the inductance pads of a double lead from the forward and return conductors of the inductor are specified. These vary depending on the distance. The influence of different reservoir conductivities is very low.
  • the inductor as a whole constitutes a series circuit of series resonant circuits. A series circuit is formed by the line section having the resonant length. Ideally, all series circuits are resonant at the same frequency.
  • the capacitance coating can advantageously be easily adapted to the respective inductance coating, which in turn can be set in sections, the same resonant frequency without changing the resonance length. Even with a combination of the latter measure, the goal of minimum voltage requirement can be achieved in sections. If the geological conditions in the reservoir are well known, the inductor laying can be carried out with intervals adjusted in sections to the heating power demand. This can be done practically at the same time as the introduction of the steam injection and production pipes for SAGD, so that the inductive heating is already available for the preheating phase.
  • the SAGD process is initially run for a few months or years without EM support.
  • the steam chambers are already formed. Vapor chamber expansion variations along the steam injection and production pipes are generally undesirable as they may result in vapor breakthrough in individual sections ("steam breakthrough region") .When such vapor breakthrough occurs, and circumstances may do so in the remainder Portions of the reservoir still remaining bitumen (Steam to OiI Ratio (SOR) ⁇ 3) are promoted, which can be associated with large financial losses.Such losses can be avoided if long before a steam breakthrough, the inductive heating to regulate the For this purpose, the distance-optimized inductor laying can be carried out, adapted to the inductive additional heat output that is required in some sections.This retrofit solution can be used to achieve the yield of existing SAGD fields.
  • the inductors are shown within the reservoir at the same depth and the change in distance is accomplished exclusively in the horizontal direction.
  • Laying the return conductor of an inductor can also take place at different depths if the resulting heat output distribution and / or the laying of the inductor lines becomes more favorable, for example due to lower drilling costs which may arise due to softer rock formations or other geological boundary conditions .
  • the heating power density can be homogenized by adjusting the inductor distance. An example is given in the table. Should
  • the inductor spacing must be 50 m in this example geometry. If the electrical conductivity in another section of the reservoir is only half, then the inductor distance is up
  • return conductors can advantageously be kept close together, if only low heating power densities are required there. So run forward and return conductors possibly through the steam chamber and the prevailing high temperatures (eg, 200 0 C) exposed, which can lead to premature aging of the inductor, thereby reducing the service life. This can be avoided if, as shown in Section VI, the area of the steam chamber is bypassed horizontally and / or vertically.
  • the vapor chamber grows faster than in the more upstream sections, since the vapor temperature near the point of introduction is the hottest and the vapor pressure is highest. This often leads to the formation of a large steam chamber. Therefore, it may make sense to do without an additional inductive heating there, also to avoid premature steam breakthroughs.
  • the oscillator can be moved forward, so that the inductor does not need to go through the steam chamber at the beginning. The same can be achieved if the inductor is guided downwards at a more obtuse angle if the oscillator is to continue to be installed near the injection and production tubes. It is advantageous that inductor length and associated drilling costs can be saved. Furthermore, the premature aging of the inductor in the region of the first steam chamber is avoided.
  • inductor arrangements are possible in which the loop is closed underground, which can be done with advanced drilling techniques.
  • the oscillator can be installed as shown in the end of the pipe pair or as in the previous figures in the vicinity of the beginning of the tube pairs (so-called Well-Heads).
  • the submerged conductor loop with recess in the steam chamber saves inductor length and thus costs.
  • FIG. 1 shows an oil sand deposit of several elementary areas with a plurality of conductor arrangements for inductive reservoir heating and a conveyor pipe
  • FIG. 2 shows a conductor arrangement for inductive reservoir heating with grounded inductors
  • FIG. 3 shows an arrangement according to FIG. 2 with sectionally different distances of the inductor lines
  • FIG. 4 shows the plan view of an inductor arrangement according to FIG. 3 with eight sections of different conductor spacings
  • FIG. 5 shows the schematic structure of a compensated inductor with distributed capacitances
  • FIG. 6 shows the cross section of a multifilament conductor with two filament groups
  • 7 shows a plan view of an arrangement with a large-scale steam chamber at the beginning section of the injection tube and an oscillator position displaced therefrom
  • FIG. 8 shows a plan view modified from FIG. 7 with oscillator position in the end region of the tube pair and the conductor loop closed underground;
  • FIG. 9 shows an arrangement for inductive reservoir heating with inductors running and grounded in opposite directions
  • FIG. 10 shows a detail of a two-dimensional inductor-oscillator array with electrode sections that have been merged in sections for the purpose of grounding.
  • Such elementary unit is arbitrarily repeatable in both horizontal directions of the seam.
  • FIG. 1 An underground oil sands deposit (seam) forms the reservoir, with elementary units 100 of a length 1, height h and thickness w being obtained one behind the other or next to each other. Above the reservoir 100 is an overburden layer 105 ("overburden”) of thickness s. Corresponding layers (“underburden”) are located under the reservoir 100, but are not marked in detail in FIG.
  • an injection pipe for introducing steam by means of which the viscosity of the bitumen or heavy oil is lowered, and a conveying or spraying production pipe available.
  • the production pipe is designated 102 in FIG. 1, while an injection pipe is not shown here and, if necessary, also superfluous.
  • the lines are designed as inductor lines 10, 20 in FIG.
  • the inductor lines 10, 20 are guided in the reservoir 100 at a predetermined distance ai substantially parallel and horizontal.
  • production tube 102 and inductor lines 10, 20 do not run in the same direction, but in particular form a right angle. Other angles, i. Orientations of inductor and production pipes exist. This allows for the geological boundary conditions.
  • Each of the repeating units 100 is assigned an oscillator unit 60, 60 ',...
  • an over-the-day RF power generator from which the electrical power is generated and fed via the forward and return conductors into the inductors.
  • the return and return conductors must be routed vertically through the overburden into the reservoir. If the distance a 2 of the forward and return conductors in the vertical range is as low as possible and al> a2 applies, no heating takes place and energy is saved.
  • return conductor can also be performed in a single bore, which there is the possibility of an even smaller distance.
  • the forward and return conductors can be stranded together or form a coaxial cable, which is branched in the reservoir.
  • FIGS. 1, 2 and 6 to 8 each show a coordinate system with the coordinates x, y and z, which facilitates the mining orientation.
  • the coordinate system can also have a different orientation.
  • an oscillator 60 which is used as a high-frequency generator for days, supplies electrical energy to the generator
  • Deposit 100 brought in.
  • a single vertical bore 12 is present in this case, which extends into the region of the reservoir 100 and there passes into two horizontal holes, which are not marked in detail.
  • a pair of conductors with a common electrical return conductor 5 is introduced, wherein the end-side ends of the forward and return conductors are connected to the oscillator 60 as an energy converter. The other ends extend to the reservoir 100.
  • a so-called Y-branch 25 is present.
  • the inductor lines 10 and 20 run horizontally in the reservoir 100 parallel in the reservoir 100 and into the region of the saline-injected region in which the conduits 10 and 20 are not insulated and act as electrical inducers. In particular in the area of the inductor lines 10, 20, the induction heating should thus be formed.
  • the combined return conductor pair may be formed, for example, as a coaxial line 5.
  • the environment of such a pair of conductors is completely field-free. This then allows the use of electrically conductive and magnetic materials for a sheathing of the forward / return pair or a border of the vertical bore 12 with steel pipes.
  • the formation of the Y-branch 25 is carried out in an electrically known manner, which is not discussed in detail in the present context.
  • the shielding of the oscillator 60 at the entry point can be made more compact. This proves to be advantageous for the so-called exposure area, in which no operating personnel may stay.
  • the actual production pipe is indicated by 102.
  • This is conventionally designed in accordance with the prior art such that the liquefied bitumen collects therein, whereafter it is sucked off in a known manner.
  • FIG. 2 Three areas are formed in FIG. 2:
  • the lines 10/20 from the oscillator 60 to the branch 25 form a first section A, in the reservoir 100 a second section B and in the end region a third section C.
  • different conductor arrangements can be selected in the individual sections A, B and C.
  • stranded conductors are used in the first section A.
  • insulated insulated conductors are used for the inductor leads, whereas in the third section C non-insulated conductor ends are present which form electrodes.
  • induction lines 10 and 20 guided in this case need not run parallel. Rather, they have different distances a lr which can be adapted to the conditions of the deposit. Depending on the geological conditions, they can have sections for an inductive interaction with each other and be kept very narrow there, so that their fields compensate each other.
  • the following table shows the inductance coverings of a double cable, ie the return conductor of the inductor. As mentioned, these vary depending on the distance a x between about 0.46 and 1.61 ⁇ H / m. The influence of different reservoir conductivities is very low.
  • the inductor as a whole represents a series connection of series resonant circuits.
  • a series circuit is formed by the line section having the resonance length L R. Ideally, therefore, all series circuits would be resonant at the same frequency. This would give the lowest possible voltages along the inductor. Sectionally varying distances, however, lead in the case of inductors of constant resonance length to partially incomplete compensation, which leads to increased demands on the dielectric strength of the dielectric between filament groups. Under certain circumstances, it may otherwise lead to breakdowns or even to the destruction of the inductor.
  • the relative change in resonant length is proportional to 1 / sqrt (inductivity coating). This means that the resonance length in the vertical sections inductor distance of z. B. 0.25 m is about twice as large as a nominal inductor distance of 100 m. Corresponding changes result, for example, at a resonant frequency of 100 kHz. Specifically, resonant frequencies between 1 and 500 kHz are considered suitable, with 10 kHz on the one hand and 100 kHz on the other.
  • FIG. 5 shows the schematic structure of the compensated conductors for the inductor lines with distributed capacitances
  • FIG. 6 shows the cross section along the line VI-VI.
  • the lines are formed of conductors 51 and 52, which form according to Figure 6 multifilament cables within an insulation 53.
  • the resonance length L R can be adapted to the sectionally changing spacing of the inductor lines.
  • a steam chamber 30, for example designed to be particularly large can be present at the beginning section of the injection pipe.
  • the oscillator position, ie the generator 60 for days move or even in the end of the conductor pair 10/20 to arrange.
  • the lines are closed in this case with an underground conductor loop 15, which may also be located directly behind the steam bubble.
  • FIGS. 7 and 8 show corresponding schemes as a plan view. From these two figures it is particularly clear that the inventive concept is also suitable for retrofitting existing bitumen or heavy oil conveying systems.
  • certain areas of ⁇ lsandla- ger Wun have already been exploited by the known SAGD method, which form in the already exploited areas usually large vapor bubbles.
  • SAGD method which form in the already exploited areas usually large vapor bubbles.
  • By means of a device having a "mobile" high-frequency generator 60 it is possible to displace and to shift the inductor arrangement away from the starting section of the injection / conveying tube device In this case, the inductor conductor loop is advantageously always closed underground
  • FIG. 9 shows an arrangement in which, according to FIG. 1, a vertical bore 12 is present approximately in the middle of the illustrated reservoir 100. At a local oscillator 60 there is again a pair of conductors 5 in the
  • the corresponding distribution of the heating power in this geometry was also calculated for this case by means of FEM (Finite Element Methods) and gave satisfactory boundary conditions. It is also possible with such a routing of the inductor lines, the non-insulated conductor ends out of the reservoir out in areas of higher electrical conductivity. For example, water-bearing strata can be found outside the reservoir, for example in the overburden or underburden.
  • FIG. 10 shows a modification of a system according to FIG. 1b with arrangements according to FIG. 9, in which a two-dimensional 200 is formed from individual inductors.
  • the inductors are shown with diverging lines one behind the other and in two rows next to each other.
  • Two deposits of oscillators 60, 60 ', 60 ", ... are present in each case over the deposit 100, of which pairs of conductors 5, 5', 5",... Are perpendicular through the overburden to the deposit 100 extend and branch off via corresponding rows of branches 25, 25 ', 25' ', ... in opposite directions.
  • each inductor pair is assigned its own generator from the group of the generators 60 1D shown in FIG.
  • the forward and return conductors of the inductor in the overburden are guided substantially vertically to the depth of the deposit and in comparison to the longitudinal extension of the lines have a low lateral distance a of at most 10 m, but in particular less than 5 m.
  • the inductor lines are in led the deposit horizontally and regions have different distances, whereby the power distribution is changeable. If the vertical outward and return conductors running vertically in the overburden are combined to form a line pair, the line pair can be introduced in a single bore which reaches down into the reservoir and can only be branched in the reservoir. In the overburden then no power losses.

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  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • General Induction Heating (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

Le procédé connu DGMV (drainage par gravité au moyen de vapeur) repose sur la présence d'un tube d'injection faisant saillie dans un gisement et d'un tube de production sortant de ce gisement, ces deux tubes, conçus pour améliorer la fluidité de l'huile très lourde et/ou du bitume d'un réservoir, pouvant être, si nécessaire, exposés en particulier à de la vapeur très chaude. Des procédés selon lesquels la zone active pourvue du tube d'injection est conçue en outre comme chauffage à induction par rapport à son environnement dans le gisement ont déjà été décrits. Selon l'invention, les conducteurs aller et retour (5, 5') des tubes inducteurs (10, 20; 110, 120) sont guidés sensiblement verticalement dans le terrain de recouvrement (105) jusque dans la profondeur du gisement (100) et présentent, par comparaison à l'étendue longitudinale des tubes inducteurs, un faible écartement latéral (a) d'au plus 10 m, en particulier inférieur à 5 m. De préférence, les tubes inducteurs (10, 20; 110, 120) sont guidés horizontalement dans le gisement (100) et présentent par endroits des écartements différents. Toujours selon l'invention, les conducteurs aller et retour électriques (5, 5') qui s'étendent verticalement dans le terrain de recouvrement (105) sont de préférence regroupés pour former une paire de conducteurs (5). Ainsi la paire de conducteurs (5) peut être introduite dans un trou unique (12) qui atteint le réservoir (100), et se ramifier seulement dans le réservoir (100).
EP09780723.4A 2008-08-29 2009-07-16 Installation pour une extraction in situ d'une substance contenant du carbone Not-in-force EP2315910B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09780723T PL2315910T3 (pl) 2008-08-29 2009-07-16 Instalacja do pozyskiwania in situ zawierającej węgiel substancji

Applications Claiming Priority (2)

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DE102008044953A DE102008044953A1 (de) 2008-08-29 2008-08-29 Anlage zur In-Situ-Gewinnung einer kohlenstoffhaltigen Substanz
PCT/EP2009/059168 WO2010023032A2 (fr) 2008-08-29 2009-07-16 Installation pour une extraction in situ d'une substance contenant du carbone

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DE (1) DE102008044953A1 (fr)
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PL (1) PL2315910T3 (fr)
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Families Citing this family (13)

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DE102009019287B4 (de) * 2009-04-30 2014-11-20 Siemens Aktiengesellschaft Verfahren zum Aufheizen von Erdböden, zugehörige Anlage und deren Verwendung
DE102010020154B4 (de) 2010-03-03 2014-08-21 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur "in-situ"-Förderung von Bitumen oder Schwerstöl
EP2623709A1 (fr) * 2011-10-27 2013-08-07 Siemens Aktiengesellschaft Dispositif de condensateur pour une bande de roulement d'un dispositif destiné au transport in situ d'huile lourde et de bitume issus de gisements de sable oléagineux
DE102012220237A1 (de) 2012-11-07 2014-05-08 Siemens Aktiengesellschaft Geschirmte Multipaaranordnung als Zuleitung zu einer induktiven Heizschleife in Schweröllagerstättenanwendungen
CN103362485B (zh) * 2013-06-03 2015-11-18 中国石油天然气股份有限公司 重力辅助纳米磁流体驱开采稠油油藏的方法及其井网结构
EP2886793A1 (fr) * 2013-12-18 2015-06-24 Siemens Aktiengesellschaft Procédé d'introduction d'une boucle d'inductance dans une formation rocheuse
EP2886792A1 (fr) * 2013-12-18 2015-06-24 Siemens Aktiengesellschaft Procédé d'introduction d'une boucle d'induction dans une formation rocheuse
DE102014223621A1 (de) * 2014-11-19 2016-05-19 Siemens Aktiengesellschaft Lagerstättenheizung
DE102015208056A1 (de) * 2015-04-30 2016-11-03 Siemens Aktiengesellschaft Heizvorrichtung zur induktiven Heizung einer Kohlenwasserstofflagerstätte
DE102015215448A1 (de) * 2015-08-13 2017-02-16 Siemens Aktiengesellschaft Kabel, Induktor und Verfahren zur Herstellung eines Induktors zur Heizung einer geologischen Formation
WO2017177319A1 (fr) 2016-04-13 2017-10-19 Acceleware Ltd. Appareil et procédés de chauffage électromagnétique de formations d'hydrocarbures
US11773706B2 (en) * 2018-11-29 2023-10-03 Acceleware Ltd. Non-equidistant open transmission lines for electromagnetic heating and method of use
WO2020176982A1 (fr) 2019-03-06 2020-09-10 Acceleware Ltd. Lignes de transmission ouvertes multilatérales pour chauffage électromagnétique, et procédé d'utilisation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2636530A1 (de) * 1976-07-15 1978-05-03 Fisher Erwaermung von halbleitern
US4116273A (en) * 1976-07-29 1978-09-26 Fisher Sidney T Induction heating of coal in situ
US4144935A (en) * 1977-08-29 1979-03-20 Iit Research Institute Apparatus and method for in situ heat processing of hydrocarbonaceous formations
US7322415B2 (en) * 2004-07-29 2008-01-29 Tyco Thermal Controls Llc Subterranean electro-thermal heating system and method
DE102007008292B4 (de) 2007-02-16 2009-08-13 Siemens Ag Vorrichtung und Verfahren zur In-Situ-Gewinnung einer kohlenwasserstoffhaltigen Substanz unter Herabsetzung deren Viskosität aus einer unterirdischen Lagerstätte
DE102007036832B4 (de) 2007-08-03 2009-08-20 Siemens Ag Vorrichtung zur In-Situ-Gewinnung einer kohlenwasserstoffhaltigen Substanz
DE102007040605B3 (de) * 2007-08-27 2008-10-30 Siemens Ag Vorrichtung zur "in situ"-Förderung von Bitumen oder Schwerstöl
DE102007040607B3 (de) * 2007-08-27 2008-10-30 Siemens Ag Verfahren und Vorrichtung zur "in situ"-Förderung von Bitumen oder Schwerstöl
DE102008012895A1 (de) 2008-03-06 2009-09-10 Robert Bosch Gmbh Korrosionsschutzgel und Korrosionsschutzbeschichtung für elektronische und/oder mikromechanische Bauteile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010023032A2 *

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RU2499886C2 (ru) 2013-11-27
DE102008044953A1 (de) 2010-03-04
US8881800B2 (en) 2014-11-11
CA2735300A1 (fr) 2010-03-04
PL2315910T3 (pl) 2013-10-31
WO2010023032A3 (fr) 2010-12-29
MX2011002131A (es) 2011-04-05
RU2011111690A (ru) 2012-10-10
CA2735300C (fr) 2015-11-03
EP2315910B1 (fr) 2013-05-15
WO2010023032A2 (fr) 2010-03-04
US20110146968A1 (en) 2011-06-23

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