EP3084121A1 - Procédé d'introduction d'une boucle d'inducteur dans une formation rocheuse - Google Patents

Procédé d'introduction d'une boucle d'inducteur dans une formation rocheuse

Info

Publication number
EP3084121A1
EP3084121A1 EP14761315.2A EP14761315A EP3084121A1 EP 3084121 A1 EP3084121 A1 EP 3084121A1 EP 14761315 A EP14761315 A EP 14761315A EP 3084121 A1 EP3084121 A1 EP 3084121A1
Authority
EP
European Patent Office
Prior art keywords
inductor
bore
cutting
arm
introducing
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.)
Withdrawn
Application number
EP14761315.2A
Other languages
German (de)
English (en)
Inventor
Stefan Blendinger
Vladimir Danov
Dirk Diehl
Andreas Koch
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
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to EP14761315.2A priority Critical patent/EP3084121A1/fr
Publication of EP3084121A1 publication Critical patent/EP3084121A1/fr
Withdrawn legal-status Critical Current

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
    • E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
    • 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
    • E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
    • 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
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling

Definitions

  • the present invention relates to a method for introducing an inductor loop into a rock formation for heating an oil reservoir and a corresponding In ⁇ tion device.
  • a disadvantage of using the superheated steam method is that the heat distribution within the oil reservoir is difficult or impossible to predetermine.
  • the known induction heater for the oil reservoir in particular the introduction of the inductor cable is difficult. So it is imperative for the induction heating to form a so-called inductor loop.
  • Words must be placed an annular or CLOSED ⁇ sene otherwise form of Induktoriquess into the oil reservoir. This is done, for example, with flat drilling gen in the range of about 40 m below the surface of the Ge ⁇ stone formation. The so-called
  • Bananaloopbacter be used, in which along a curved path two substantially parallel holes are performed.
  • Each of these bores has an inlet opening and an outlet opening, so that the two outlet openings on the surface of the rock formation can serve to connect the two ends of the two inductor arms together again to the inductor loop on the surface.
  • such a method can only be used in areas near the surface for the oil reservoir. For deep drilling in areas up to 800 m or 1000 m below the surface of the rock formation, such a drilling method is not possible. This is particularly due to the fact that when drilling a hole, the weight of the drill pipe itself is supportive.
  • the method comprises the following steps: drilling a first inductor bore for introducing a first inductor arm,
  • a total of three holes are now souge ⁇ leads.
  • an inductor bore is carried out in each case for the first inductor arm and the second inductor arm.
  • three or more inductor arms can also be used.
  • a separate inductor bore is generated for each Induktorarm.
  • the inductor bores are all created by a common inductor bore so that all or some of the inductor bores are coextensive in the initial region of the respective bore.
  • the individual Induktorbohronne diverge and in particular parallel to each other to an area réellespan ⁇ NEN, in which the eddy currents inductively generated to perform the heating of the oil reservoir.
  • At least one cut hole is provided. This cut bore now serves to make the ends of the blind holes
  • Induktorbohrungen is drilled.
  • a finding means can be used to during drilling the respective ends of the
  • a cutting region is to be understood as a region which extends essentially between the at least two inductor bore ends and the introduced distal ends of the inductor arms.
  • the inductor arms introduced into the rock formation advantageously end within the cutting area.
  • the cutting region is only a small portion of the oil reservoir to be heated, and it is also conceivable that the cutting region lies outside the oil reservoir to be heated or to be heated.
  • the Thomasbe ⁇ rich is less than or equal to about 1 m.
  • the distance between the cutting hole and the inductor bore, preferably the end of Inductor, less than or equal to about I m is formed.
  • a real intersection (7) ⁇ se is a real intersection between the bore section and the respective Induktorarm present.
  • the electrical ⁇ dungsarm closing of the inductor by the Verbin when the sectional area having a size, as has been described above with less than about 1 m beschrie ⁇ ben. If the described holes for the inductor arms and for the connecting arm in the form of the cut hole have been carried out, the introduction of the individual arms can be done.
  • the cutting bore itself can be in the form of a
  • a plurality therefore may at least partially extending in parallel horizontally by means of single ⁇ Lich a single at least partially vertically extending bore section
  • Induktorbohronne be connected. Furthermore, consequently, a plurality of substantially radially horizontally extending inductor bores can be connected by means of a single cutout bore configured in the form of a circular bore.
  • the inductor arms are used. These are now in their fullest possible extent within the oil reservoir and up to corre ⁇ spective control unit or control unit on the surface of the rock formation.
  • the cut hole now one or more connecting arms are used.
  • two inductor arms become one link arm and four
  • Induktorarmen two connecting arms, etc. necessary.
  • the connecting arms now do not extend over the entire length of the cutting bore, but extend only over sections of this cutting bore.
  • the connecting arms have a length which corresponds to the length of the cutting bore between the two corresponding or correlating cutting areas with the two inductor arms.
  • a Verbin thus extends at least between two ⁇ dungsarm Induktorarmen to a Inducer loop to produce.
  • the introduction takes place in such a way that an electrically conductive connection between the respective ends or at other locations of the inductor arms takes place in the respective inductor bore. This can be done, for example, in a mechanically contacting manner.
  • devices can be introduced, which in actual overlap of the cutting bore and the respective
  • Cutting area is resorted to. This means that the inductor loop is formed by the inductor arms, the connecting arm and the cutting area in the form of the rock formation and the rock present there.
  • the conductivity of the Thomasbe ⁇ Empire in the case that no actual overlap between cutting bore and Induktorarm takes place, be aware of increased.
  • This can be done, for example, by the use of an electrically conductive fluid or medium.
  • this fluid can be introduced into the region of the cut bore and spread out within the cut bore in such a way that it creates a connection between the first cut region and the second cut region and consequently the first inductor arm and the second inductor arm.
  • a bringing in of a connecting arm into the cutting bore is replaced by an introduction of an electrically conductive fluid to one
  • the electrically conductive fluid is introduced in addition to the connecting arm at least in the cutting area within the cutting bore to advantageously Ver ⁇ bond between the first Induktorarm, the second
  • Induktorbohrung and the cutting hole possible It is crucial that all of these holes exclusively downwards (ie in the vertical direction) or horizontally aligned within the oil reservoir. Ent ⁇ now against the known Bananaloopclar no upward drilling must be done, so that can be used on simple, formerly güns ⁇ term and above all in a relatively short time feasible drilling techniques. As a result, it is only through a method according to the invention that the possibility of induction heating of the oil reservoir is also available at any depth within the rock formation. In particular, in this way, oil reservoirs can be provided with an induction heating of the inductor loop, which are also arranged in deep well areas of approximately 1000 m or more below the surface of the rock formation.
  • Induktorbohrung be drilled through a common Induktorbohrötechnik. As has already been indicated, it is sufficient if the individual inductor bores run separately within the oil reservoir. They thus clamp the induction field or the heating field in the oil reservoir.
  • the implementation of a common Induktorbohrötechnik. As has already been indicated, it is sufficient if the individual inductor bores run separately within the oil reservoir. They thus clamp the induction field or the heating field in the oil reservoir.
  • Induktorbohrept done.
  • the heating power depends on the distance between the individual inductor arms. The greater the distance between the Induktorarmen, the greater the heating power is formed. If the Induktorarme out in ih ⁇ ren vertical sections as close together, for example in a common vertical Induktorbohrung, this results in a low or very low heat output in these sections. Only after splitting into the individual separate inductor bores the inductor arms bring a distance between them, so that now the heating power is provided to a greater extent and exactly at the desired location within the oil reservoir.
  • Inductor bores from each other can be made, for example, at different heights within the rock formation. Even at different positions on a common height or even in different radial directions, a separation of the individual inductor bores from each other is conceivable.
  • a further advantage is obtained when the Invention Induktorbohrept having at a ⁇ process according to at least one deflection point, in particular exactly one turning point.
  • the inductor bores are formed substantially with a vertical and with a substantially horizontal or inclined portion.
  • the vertical sections mean that the inductor arms can be introduced as vertically as possible into the rock formation. Vertical holes are particularly cost effective, fast and easy to execute.
  • At least one deflection leads to the fact that now a horizontal or angled section for the respective inductor bore can be seen ⁇ .
  • These horizontal or angular sections of the inductor bores now preferably extend into the oil reservoir.
  • the actual orientation of the respective deflection point preferably depends on the respective geometric design of the oil reservoir within the rock formation. This deflection is preferably designed such that a deflection in the Ho ⁇ horizontal or at an angle to the bottom of the Horizonta ⁇ len takes place. This avoids that drilling upwards with the disadvantages already described would be necessary.
  • the cutting bore has at least one deflection point, in particular sections being drilled along a curved path .
  • a deflection point for the cutting bore brings about the same advantages as have already been explained with regard to the deflection point for the inductor bores .
  • a curved path that is to say a continuous deflection point, preferably in an angled or horizontal plane, leads to a radially star-shaped network of
  • Induktorarmen or inductor holes can be achieved with a single cut hole. This leads to a particularly homogeneous heating of a radially formed in Wesentli ⁇ chen Olreservoirs with only a few holes is possible in the inventive manner.
  • Induktorbohrungen a finder is arranged for a detection of this Bohrendes when drilling the Thomasboh- tion.
  • a finding means may, for example Strah ⁇ lung in the form of radioactive radiation or to emit electromagnetic radiation.
  • An acoustic signaling for example in the form of ultrasound, can for the Detection means are provided.
  • a magnetic Aus ⁇ education of the finder is conceivable. It is crucial that the shape of the signals emitted by the finder be transportable through the rock. In this way it becomes possible, when drilling the cutting bore, for example by means of a detection device, to perceive the actual location of the respective locating means.
  • control or the alignment of the drill head for the cutting bore can be aligned with this drill end, so that the cutting area is hit with a higher probability.
  • the bore section adjacent to the at least one connecting arm in particular encapsulated.
  • this takes place when parts in the cutting area with electrically conductive liquids or
  • a further advantage can be achieved if, in a method according to the invention, the inductor bores within the oil reservoir are drilled at a uniform or essentially uniform distance of, in particular, more than approximately 50 m. This is in particular the ho ⁇ rizontalen or angled portions of Induction holes inside the oil reservoir. A distance that is uniform, leads to uniform heating ⁇ power within the oil reservoir. Unwanted heat islands in parts of the oil reservoir are avoided in this way. Distances of about 50 m and more lead to a particularly advantageous and strong heating power for a sufficient reduction of the viscosity of the oil in the oil reservoir.
  • an electrically conductive fluid is introduced at a Inventions process according to at least one of the interface regions for the elekt ⁇ driven conductive connection of the connecting arm and the angren ⁇ collapsing Induktorarms.
  • the cutting areas have sufficient proximity between the cutting bore and the respective inductor bore.
  • the cutting areas preferably have a distance from the cut bore to the respective inductor bore, which is smaller or equal to approximately 1 m.
  • Fluid can be used, for example, an aqueous or liquid Suspensi ⁇ on electrically conductive particles.
  • the solid powder in such a suspension may be, for example, graphite, chromium oxide or a similar material.
  • ionic liquids or salt solutions can be used as electrically conductive fluids.
  • the electrically conductive fluid is an electrically conductive fluid.
  • Cutting bore at least one transverse bore is introduced for the introduction of the electrically conductive fluid.
  • holes may transversely, in particular perpendicular to the bore axis of the bore section, performed ⁇ the order to provide an opening in the intersection area.
  • an induction device for heating an oil reservoir in a rock formation for oil production.
  • This induction device is particularly formed by a erfindungsge ⁇ zeßes method and has a first Induktorarm in a first and a second Induktorbohrung Induktorarm in a second Induktorbohrung on.
  • An inventive Indukti ⁇ onsvorraum is characterized in that at least one connecting arm is arranged in a bore section which forms with the two Induktorbohritch sectional areas. In this case, the connecting arm connects the two inductor arms in an electrically conductive manner with each other. Due to the inventive design of the induction device, in particular by means of a method according to the invention, he brings ⁇ inventive induction device with the same advantages, as they have been explained in detail with reference to a method according to the invention.
  • a frequency generator can be provided, which the Inductor loop with a frequency between 1kHz and 500kHz feeds.
  • the inductor loop in particular in the form of an electrical conductor, can be designed as an induction line, so that it can carry the high-frequency current, operated with little loss as a resonant circuit. Since both ends are preferably connected to the frequency generator, the induction line forms an inductor loop. The technical realization of the electrical line is performed as a resonant circuit.
  • the frequency generator can be designed as a frequency converter, which converts a voltage having a frequency of 50 Hz or 60 Hz from the mains into a voltage with a frequency in the range of 1 kHz to 500 kHz.
  • the frequency converter can be installed on a day-to-day basis.
  • At least one production well may preferably be drilled into the storage zone zone heated by the inductor loop, that is to say the oil reservoir.
  • the energizing of the conductor begins, thus the inductive heating subsoil and the oil reservoir to be devoted to form a heating zone, which is characterized by an elevated temperature.
  • a conductor of an inductor loop may have a longitudinal inductance of 1.0 to 2.7 ⁇ / m (micro Henry per meter length).
  • the cross-capacitance coating is, for example, 10 to 100 pF / m (pico Farad per meter length).
  • the diagis ⁇ diagram frequency of the arrangement is determined by the loop ⁇ fenate and shape and the cross-capacitance along the inductor.
  • the description of the electrotechnical parameters of the inductive heating system on the basis of an inductor loop is briefly explained below:
  • the inductor loop acts as induction heating during operation in order to introduce additional heat into the deposit.
  • the ak ⁇ tive area of the inductor can be in the horizontal direction inside the deposit in the essential almost ge ⁇ closed loop (ie, an oval) describe.
  • the active area may be adjoined by an end area, which may be located above ground.
  • the located above ground parts of the initial and end portion of the inductor can elekt ⁇ driven with a current source - to be contacted by - a frequency generator. It is preferably provided to compensate for the conduction inductance of the inductor sections by dis ⁇ kret or continuously executed series capacitances. It can be provided for the inductor loop with inte ⁇ grated compensation that the frequency of the frequency generator to the resonance frequency of
  • Inductor loop may be formed by cylindrical capacitors between a tubular outer electrode of a first cable section and a tubular inner electrode of a second cable section, between which a dielectric is located. Likewise, the adjacent capacitor is formed between the following cable sections.
  • the dielectric of the capacitor is chosen so that it meets ei ⁇ ne high dielectric strength and high Temperaturbestän ⁇ dtechnik.
  • Capacitor types can be used in the line of
  • the entire electrode can already be surrounded by a Isola ⁇ tion.
  • the insulation against the surrounding soil is beneficial to resistive currents through the soil between the adjacent cable sections, in particular in the region of the capacitors to prevent.
  • the insulation furthermore prevents a resistive current flow between the forward and return conductors.
  • tubular electrodes can be connected in parallel.
  • the parallel connection of the capacitors can be used to increase the capacitance or to increase its dielectric strength.
  • a compensation of the longitudinal inductance by means of predominantly concentrated cross-capacitances can be carried out: Instead of introducing more or less short capacitors as concentrated elements in the line, and the capacitance - can be a two-wire line such. Legs
  • coaxial cable or multi-wire cables over their entire length anyway - be used to compensate for the Lssensindukt professionen.
  • the inner and outer conductors are alternately interrupted at equal intervals, thus forcing the flow of current through the distributed transverse capacitances.
  • the structural design of the inductor loop can be made as a cable design or as a solid conductor design. However, the design is irrelevant to the above-described electrical operation.
  • a frequency generator for driving the electrical conductor of the inductor loop is preferably designed as a Hochfrequenzgenera ⁇ gate.
  • the frequency generator may be three phase ⁇ builds advantageously include a transformer coupling and and its power semiconductor as components.
  • the circuit may include a voltage impressing inverter. In such a generator, operation under Reso be necessary to achieve a reactive power compensation.
  • the Anberichtfre ⁇ frequency is suitably adjusted in operation. On the surface can be used to control the head of the
  • Induktorschleife the following components may be present: Starting ⁇ from the 3-phase AC line voltage source z. B. 50Hz or 60 Hz, for example, a three-phase rectifier is controlled, which is followed by a DC link with capacitor, a three-phase inverter, which generates periodic square wave signals suitable frequency. Inductors are controlled as output via a matching network of inductors and capacitors. A waiver of the matching network is possible, however, if the inductor is designed as an inductor loop, which allows the setting of the required resonant frequency due to their in ⁇ productivity and the capacitive coating.
  • the described frequency generators can be used in principle as voltage-impressing power converters or, accordingly, as current-impressing power converters.
  • the temperature in the heating zone depends on the inserted ⁇ applied electromagnetic power which is composed of the geological and physical (electrical z. B. conductivity) parameters of the deposit, as well as the technical Para ⁇ meters of the electrical arrangement, in particular consisting of conductors of the inductor loop and the high frequency generator. This temperature can reach up to 300 ° C and is adjustable by changing the current through the
  • the system is controlled by the frequency Gene ⁇ ator.
  • the electrical conductivity of the reservoir may be increased by injecting additional water or another fluid, e.g. As an electrolyte can be increased.
  • Induktorschleife done over a period of time initially no removal of the heated fluids has been carried out.
  • the Temperature development initially occurs due to the induction of eddy currents in the electrically conductive areas of the subsurface.
  • temperature gradients arise, that is, places of higher temperature than the original reservoir temperature.
  • the places of higher temperature arise where eddy currents are induced.
  • the off ⁇ transition point of the heat is therefore not the inductor loop or the electrical conductor, but it is induced by the electromagnetic field in the electrically conductive layer eddy currents.
  • time entste ⁇ Henden temperature gradient occurs in dependence of the thermal parameters, such as thermal conductivity also for heat conduction, whereby the temperature profile compensates. With a greater distance to the conductor of the inductor loop, the strength of the alternating field decreases, so that only a smaller heating is possible there.
  • the design of the electrical arrangement is preferably selected so that the penetration depth of the electromagnetic Fel ⁇ of typically corresponds to half the distance between the horizontal ⁇ formed Induktorarme. This ensures that the electromagnetic field of a return conductor of the conductor is not compensated and on the other hand, the number of holes in relation to the thickness of the reservoir can be kept optimally low. In the case of the immediate removal of the fluid made electrically conductive liquids, the electromagnetic field continues to reach removed from the Induktorarm electrically conductive layers and induces eddy currents there.
  • the advantage is that it is a self-penetrating effect, which means that the absolutely introduced power into the reservoir can always be kept constant, eg.
  • the number of Induktorarme to install -the time ⁇ the same or can be operated in sequence - depends on the size of the deposit of Olreservoirs and the number of simultaneous in-service Induktorarme depends on ⁇ play, from the available electrical power from.
  • the oil flows due to reduced viscosity in the production wells or in each case installed delivery pipe.
  • FIG. 2 shows a second step of a method according to the invention
  • FIG. 3 shows a third step of a method according to the invention
  • FIG. 6 shows a possibility of a cutting region
  • FIG. 7 shows another possibility of a cutting region
  • FIG. 8 shows a possibility of using an electrically conductive fluid
  • FIG. 9 shows a geometrical arrangement of the individual bores
  • Fig. 10 shows another way of arranging the individual holes
  • Fig. 11 shows another way of arranging the individual holes
  • Fig. 12 shows another way of arranging the individual holes.
  • FIGS. 1 to 3 describe a method according to the invention.
  • two inductor bores 120 and 130 are introduced separately via two inductor bores 160.
  • the two inductor holes 120 and 130 are deflected in a horizontal plane at different heights in the oil reservoir 110 in the rock formation 100 via a deflection point 170.
  • Both inductor bores 120 and 130 are blind holes, each having a bore end 122 and 132.
  • From the stand ⁇ A within the oil reservoir 110 is preferably con stant ⁇ and greater than about 50 m is formed.
  • cutting bore 140 is performed here. This takes place here purely vertically, since the two inductor bores 120 and 130 are arranged at different heights in a vertically oriented plane.
  • the cutting bore 140 thereby generates cutting regions 150 in the region of the respective bore end 122 and 132.
  • Induktorbohrept 120 and 130 introduced.
  • a connecting arm 40 is now arranged, which closes the inductor loop 90 and thus forms the induction device 10.
  • a control unit which provides the corresponding energization for the heating process for the inductor loop 90.
  • 4 shows a variant of the embodiment of FIGS. 1 to 3, in which the two inductor arms 20 and 30 do not run at different heights but laterally spaced from one another at an equal height within the oil reservoir 110. This makes it necessary that now also the cutting bore 140 is deflected around a deflection point 170.
  • the further features of this embodiment correspond to the embodiment of FIGS. 1 to 3.
  • Fig. 5 the drilling operation for the cutting bore 140 is shown. In this embodiment, located at the bore end 122 of this first inductor bore 120 a
  • Detection means 50 which has signals, for example in magnetic or radiation-like form.
  • the drill head 200 which produces the cutting bore 140, has a detection device 210 for receiving these signals.
  • tracer process a situation is achieved with high probability, as shown in FIG. 6.
  • the cutting region 150 between the cutting bore 140 and the inductor bore 120 is formed as an overlapping cutting region 150.
  • a mechanical contact for the electrically conductive connection between the connecting arm 40 and the respective inductor arm 20 and 30 can now take place.
  • FIGS. 7 and 8 show a situation which can be achieved, for example, without a locating means 50.
  • Cutting region 150 is formed as an approximation or as a minimum distance between the cutting bore 140 and the inductor bore 120. This minimum distance is preferably less than or equal to about 1 m.
  • an electrically conductive fluid 60 can be introduced, for example, by means of transverse bores 142. This may be, for example, an electrically conductive liquid, in particular in the form of a suspension of electrically conductive particles.
  • FIGS. 9 to 12 show different geometries for the arrangement of the individual bores 120, 130 and 140.
  • Fig. 9 shows a variant with a radial distribution of a total of three first and three second Induktorarmen 120 Induktorarmen 130.
  • a cross-sectional bore 140 is provided, which after the Umlenkstel- le 170 runs on a circular path 152.
  • FIG. 10 shows a variant which has a radial spreading apart of two inductor arms 120 and 130 after the deflection point 170. In this case, similar to FIG. 4, a distribution on a common horizontal plane becomes possible.
  • a common inductor bore 160 has been used herein such that the inductor arms 120 and 130 extend through a common bore in the vertical portion.
  • Fig. 9 on the circular path 152 meets all the ends of the plurality of Induktorarmen 120 and 130.
  • a plurality of connecting arms are ⁇ introduced into the circular path, so that there is always only two adjacent arms of
  • Induktorarmen 120 and 130 are interconnected.
  • the remaining portions of the circular path 152 contain no conductive portions.
  • a respective connecting arm is thus only a circular segment, according to the example of FIG. 9, for example, a circular segment over an angle of about 60 °.
  • three conductive sections are preferably arranged in the circular path 152. Between the conductive sections, the bore of the circular path 152 may remain empty or be filled by a non-conductive portion.
  • Fig. 11 shows a variant in which the Induktorarme be distributed 120 and 130 via deflection points 170 on different heights in the rock formation ⁇ ner endeavour 100th
  • a common inductor bore 160 could be used.
  • Vertika ⁇ le hole sectional bore perform 140th
  • FIG. 12 shows an embodiment according to FIG. 12, which has its own one for each inductor bore 120 and 130
  • Cut hole 140 provides the desired connection for the electrical conductivity for closing the inductor loops 90. Concerning . 11 and 12, it should be noted that in each case two be ⁇ adjacent inductor arms 120 and 130 are conductively connected to each other. For this purpose, it is possible for a plurality of connecting arms to be introduced into the cutting bore 140, so that always only two adjacent arms of the inductor arms 120 and 130 are connected to one another. The remaining portions of the cut bore 140 contain no conductive portions. A respective connecting arm is thus only a tubular conductor of limited length. According to the example of
  • conductive portions are disposed in the cut bore 140.
  • three conductive portions are disposed in the cut bore 140, between each pair of inductor arms 120, 130. Between the conductive portions, the bore of the cut bore 140 may be left empty or filled by a nonconductive portion.
  • the Induktorarme 120,130 thereby comprise means operating to generate an electromagnetic field which extends into the oil reservoir and which, in turn, inductively acting on the oil and to hydrocarbons in the oil reservoir in ⁇ Be.
  • the electrically closed part of the conductor loop consisting of the electrically conductive link in the cut hole does not necessarily means that a strong electromagnetic field he witnesses to be ⁇ ⁇ special way in. This is also not necessary, since the connecting arm is essentially intended to complete the conductor loop. This results in a coherent Lei ⁇ terschleife, consisting of two inductor arms 120,130 and the connecting arm for connecting these two inductor arms

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  • 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)
  • General Induction Heating (AREA)
  • Earth Drilling (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

L'invention concerne un procédé d'introduction d'une boucle d'inducteur (90) dans une formation rocheuse (100) pour chauffer un réservoir de pétrole (110) se trouvant dans la formation rocheuse (100) pour l'extraction de pétrole, comprenant les étapes consistant à : effectuer un premier forage d'inducteur (120) destiné à introduire un premier bras d'inducteur (20); effectuer un deuxième forage d'inducteur (130) destiné à introduire un deuxième bras d'inducteur (30); effectuer au moins un forage de coupe (140) en formant une première zone de coupe (150) comportant le premier forage d'inducteur (120) et une deuxième zone de coupe (150) comportant le deuxième forage d'inducteur (130); introduire le premier bras d'inducteur (20) dans le premier forage d'inducteur (120) et le deuxième bras d'inducteur (30) dans le deuxième forage d'inducteur (130); introduire au moins un bras de liaison (40) dans la zone de coupe (140) pour établir une connexion électriquement conductrice avec les deux bras d'inducteur (20, 30) dans les deux zones de coupe (150) pour former la boucle d'inducteur (90). L'invention concerne en outre un dispositif d'induction destiné à mettre en œuvre ce procédé.
EP14761315.2A 2013-12-18 2014-09-02 Procédé d'introduction d'une boucle d'inducteur dans une formation rocheuse Withdrawn EP3084121A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14761315.2A EP3084121A1 (fr) 2013-12-18 2014-09-02 Procédé d'introduction d'une boucle d'inducteur dans une formation rocheuse

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13198019.5A EP2886793A1 (fr) 2013-12-18 2013-12-18 Procédé d'introduction d'une boucle d'inductance dans une formation rocheuse
EP14761315.2A EP3084121A1 (fr) 2013-12-18 2014-09-02 Procédé d'introduction d'une boucle d'inducteur dans une formation rocheuse
PCT/EP2014/068613 WO2015090646A1 (fr) 2013-12-18 2014-09-02 Procédé d'introduction d'une boucle d'inducteur dans une formation rocheuse

Publications (1)

Publication Number Publication Date
EP3084121A1 true EP3084121A1 (fr) 2016-10-26

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EP13198019.5A Withdrawn EP2886793A1 (fr) 2013-12-18 2013-12-18 Procédé d'introduction d'une boucle d'inductance dans une formation rocheuse
EP14761315.2A Withdrawn EP3084121A1 (fr) 2013-12-18 2014-09-02 Procédé d'introduction d'une boucle d'inducteur dans une formation rocheuse

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13198019.5A Withdrawn EP2886793A1 (fr) 2013-12-18 2013-12-18 Procédé d'introduction d'une boucle d'inductance dans une formation rocheuse

Country Status (5)

Country Link
US (1) US10221666B2 (fr)
EP (2) EP2886793A1 (fr)
CA (1) CA2934111C (fr)
RU (1) RU2651867C1 (fr)
WO (1) WO2015090646A1 (fr)

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US11781421B2 (en) 2020-09-22 2023-10-10 Gunnar LLLP Method and apparatus for magnetic ranging while drilling

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DE102004009896A1 (de) 2004-02-26 2005-09-15 Paul Vahle Gmbh & Co. Kg Induktive Energie- und Datenübertragung mit Parallelleiteranordnung
DE102007040606B3 (de) * 2007-08-27 2009-02-26 Siemens Ag Verfahren und Vorrichtung zur in situ-Förderung von Bitumen oder Schwerstöl
DE102007036832B4 (de) * 2007-08-03 2009-08-20 Siemens Ag Vorrichtung zur In-Situ-Gewinnung einer kohlenwasserstoffhaltigen Substanz
DE102007040607B3 (de) * 2007-08-27 2008-10-30 Siemens Ag Verfahren und Vorrichtung zur "in situ"-Förderung von Bitumen oder Schwerstöl
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Also Published As

Publication number Publication date
CA2934111A1 (fr) 2015-06-25
US20170306736A1 (en) 2017-10-26
US10221666B2 (en) 2019-03-05
CA2934111C (fr) 2018-02-20
RU2016123806A (ru) 2018-01-23
EP2886793A1 (fr) 2015-06-24
RU2651867C1 (ru) 2018-04-24
WO2015090646A1 (fr) 2015-06-25

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