EP2929132B1 - Elektrische vorrichtung zur bohrlochstimulation - Google Patents

Elektrische vorrichtung zur bohrlochstimulation Download PDF

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Publication number
EP2929132B1
EP2929132B1 EP13815403.4A EP13815403A EP2929132B1 EP 2929132 B1 EP2929132 B1 EP 2929132B1 EP 13815403 A EP13815403 A EP 13815403A EP 2929132 B1 EP2929132 B1 EP 2929132B1
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EP
European Patent Office
Prior art keywords
section
electrode
extension
threading
peripheral ring
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EP13815403.4A
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English (en)
French (fr)
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EP2929132A2 (de
Inventor
Michaël DELCHAMBRE
Laurent FERIOL
Nicolas INNOCENTI
Jesus MINAKATA
Salvador MONCHO
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Ene29 SARL
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Ene29 SARL
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    • 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
    • E21B43/25—Methods for stimulating production
    • 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
    • E21B43/003—Vibrating earth formations
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/028—Electrical or electro-magnetic connections
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded

Definitions

  • the present invention belongs to the field of well stimulation.
  • well stimulation is meant to generate a shock wave in a natural well or borehole.
  • well stimulation can be used to improve the production of an underground resource extraction well (oil, natural gas, water, etc.), to carry out a seismological study (for example by carrying out measurements by means of a surface sensor), to perform underground rock fracturing, etc.
  • the tool In well stimulation operations, the tool is inserted into said well with the stimulation head down, and is lowered to the point where the stimulation is to be performed. Once the stimulation point is reached, pulses of electric current of high intensity (which may exceed a hundred kilo-amperes) are sent into the first electrode. A current arc is then formed, in the chamber of the head of stimulation, between the first electrode and the second electrode (generally connected to the electrical ground). Said current arc makes it possible to form a shock wave that will stimulate the well. For example, such a shock wave can make it possible to unclog an extraction well.
  • Such a tool has a length generally between three and twenty meters, and is also very heavy, of the order of several hundred kilograms.
  • such a tool is generally in the form of several sections to be assembled end to end. Each section then comprises a first electrode and a second electrode electrically insulated from each other.
  • the first electrode of the tool is thus formed by the connection of the first electrodes of said sections, and the second electrode of the tool is formed by the connection of the second electrodes of said sections.
  • the patent US 4874327 discloses a cable head for easier assembly of said cable head on a measuring tool to be inserted into a well obtained by drilling.
  • the present invention has the main objective of providing a solution that allows a connection of the sections of a tool that is faster and simpler than the solutions of the prior art.
  • the present invention also aims to provide a solution that allows, in some embodiments, a mechanical coupling between the sections which is both robust (resistant to a load of several hundred kilograms) and waterproof (resistant at a pressure of the order of several hundred bars at a temperature above one hundred degrees Celsius).
  • the present invention also aims to propose a solution that allows, in some embodiments, an electrical coupling that is both robust (resistant to very high voltages - several tens of kilovolts - and very strong currents - Several dozens kilo-amperes) and efficient in order to limit the losses of electrical energy, the degradation of the electrical contacts and the electrical ramping by skin effect.
  • the invention relates to an electrical device for stimulating a well, said device comprising several sections, said sections being adapted to be assembled end to end so as to form a tool comprising a first electrode formed by first electrodes of said sections and a second electrode formed by second electrodes of said sections, said second electrode being a peripheral electrode electrically isolated from said first electrode, and said first electrode and second electrode of the tool forming at one end of said tool a head stimulation.
  • an end of a body of a first section comprises a peripheral ring rotatable relative to said body of said first section and immobile in translation relative to said body of said first section, said peripheral ring having a thread adapted to cooperate with threading the second electrode of an end of a second section to assemble said second section on said first section.
  • the second electrode of the first section comprises an extension between the peripheral ring and a termination of the end of said first section. If it is the threading of the second electrode of the second section which is an external thread, then the second electrode of the second section comprises an extension between the threading and a termination of the end of said second section.
  • the first section and / or the second section comprise means, called "electrical contact means", adapted to establish an electrical contact between the second electrodes of the first section and the second section at a contact zone of the extension. when the second section is assembled on the first section, said contact zone being a peripheral zone of the extension.
  • the assembly of the second section on the first section will also be easier. Indeed, once the threading of the second section engaged with the threading of the peripheral ring, it will be sufficient to achieve the assembly to make rotating said peripheral ring by keeping a body of the second section immobile in rotation with respect to the body of the first section.
  • the electrical contact means thus arranged on the first section and / or the second section, protect the bearings, the joints and the threads of the peripheral ring and the second section. Indeed, because of the electric current levels considered, the flow of electric current through the threads could cause seizing or welding of said threads between them.
  • the end of the section which carries the external thread must necessarily be engaged in the end of the other section, which is then in the form of a sleeve with an internal thread. Therefore, the extension of the second electrode of the section which carries the external thread is closer to the electrically insulating material, which separates said second electrode from the first electrode than the second electrode from the other section.
  • the electric current tends to flow, in the second electrode of the tool, closer to said electrically insulating material. It is therefore understood that, by skin effect, the current will tend to circulate mainly by the electrical contact means, so that the flow of electric current through the threads will be limited.
  • the contact zone is a peripheral zone of the extension, a greater electrical contact surface is provided between the second respective electrodes of the first section and the second section, while maximizing the distance between the electrical contact means and the first section. electrode.
  • the electric well stimulation device comprises one or more of the following characteristics, taken individually or in any technically possible combination.
  • the extension comprises a peripheral sealing gasket arranged between the contact zone of said extension and the external thread.
  • peripheral seal makes it possible to seal the mechanical coupling, and thus to avoid the formation of current micro-arcs.
  • Such an arrangement of the peripheral seal is furthermore advantageous in that it makes it possible to protect said peripheral sealing gasket. Indeed, as has been described for the threads, the electric current, by skin effect, will tend to circulate mainly by the electrical contact means, so that the electric current that could be subjected to said peripheral sealing gasket will be limit.
  • the electrical contact means comprise an electrically conductive peripheral seal, a toric spring and / or an electrically conductive foil.
  • first section and the second section comprise respective means, called “rotational locking means", adapted to cooperate to immobilize in rotation a body of the second section relative to the body of the first section when the assembling said second section on said first section.
  • the means for locking in rotation of at least one section are not geometrically adapted to cooperate with the means for locking in rotation of at least one other section. .
  • peripheral ring and / or the body of the first section comprise a recess forming a bearing surface adapted to cooperate with gripping means.
  • the recess is in the form of a blind hole or a flat.
  • the first section comprises another peripheral ring movable in rotation and immobile in translation relative to the body of said first section, said other peripheral ring comprising a thread adapted to cooperate with a thread of the second electrode of a third section for assembling said third section on said first section.
  • FIGS 1, 2 and 3 schematically represent an electrical device 10 for stimulating wells.
  • well stimulation generally means generating a shock wave in a natural well or borehole.
  • Such well stimulation can be implemented to improve the production of an underground resource extraction well, to conduct a seismological study, to perform underground rock fracturing, and so on.
  • the electrical stimulation device 10 comprises several sections 11 adapted to be assembled end to end.
  • the figure 2 represents said electrical stimulation device after assembly of said sections 11 so as to obtain a tool 10a.
  • the figure 3 schematically represents a half-sectional view of the tool 10a of the figure 2 .
  • electrical stimulation device refers to all the sections 11, whether assembled or not, while the term “tool” refers to the object obtained by assembling the sections 11. As a result, all the sections 11 assembled together may be referred to in the remainder of the description as “electrical stimulation device” or "tool”.
  • the tool 10a comprises a first electrode 12 and a second electrode 13. Said first electrode 12 and said second electrode 13 are electrically insulated from each other, throughout the body of the tool 10a, by a layer 14 electrically insulating.
  • Said first and second electrodes 12, 13 of the tool 10a form at an end of said tool 10a a stimulation head 15, which is considered to be known to those skilled in the art.
  • Each section 11 comprises for example a portion of the first electrode 12, a portion of the electrically insulating layer 14 and a portion of the second electrode 13 of the tool 10a.
  • the second electrode 13 is a peripheral electrode surrounding the electrically insulating layer 14, said electrically insulating layer 14 surrounding the first electrode 12 which constitutes a central core of the tool 10a.
  • the tool 10a may comprise other elements that are not represented on the Figures 1 to 3 .
  • one or more sections 11 of the tool 10a may each comprise an electric energy accumulator, an electrical protection device, etc.
  • the present invention relates to an improvement made to the assembly means of at least two sections of the electrical stimulation device 10, hereinafter referred to respectively as the first section 11a and the second section 11b. It should be noted that this improvement is preferably implemented for the assembly means of all the sections 11 of said electrical stimulation device 10.
  • one end of the body of the first section 11a comprises a peripheral ring 16.
  • Said peripheral ring 16 is rotatable relative to said body of said first section 11a and is immobile in translation relative to said body of said first section 11a.
  • said peripheral ring 16 comprises a thread adapted to cooperate with a thread 133 of one end of a body of the second section 11b to assemble said second section 11b on said first section 11a.
  • the figures 4 and 5 schematically represent sectional views of an exemplary embodiment of the first and second sections 11a, 11b, respectively before assembly and after assembly.
  • the figure 6 schematically represents, in perspective, the first section 11a of figures 4 and 5 .
  • the threading of the peripheral ring 16 of the first section 11a is an external thread, that is to say a thread arranged on the face of the peripheral ring 16 located on the opposite side to the first electrode 12 forming the central core of said first section 11a.
  • the second electrode 13 of the first section 11a comprises an extension 130 between the peripheral ring 16 and a termination 131 of the end of said first section 11a.
  • the peripheral ring 16 is for example made by means of two half-rings 16a, 16b assembled between two stops 132a, 132b peripherals of the second electrode 13 of the first section 11a.
  • the two half-rings 16a, 16b are assembled together by any suitable means, for example by means of screws 160. Because the peripheral ring 16 is arranged between the two abutments 132a, 132b of the second electrode 13 of the first section 11a, said peripheral ring 16, while being rotatable relative to said second electrode 13 of said first section 11a, is stationary in translation relative to said second electrode 13 of said first section 11a.
  • the second electrode 13 forms at the end of said second section 11b a sleeve within which the extension 130 of the second electrode 13 of the first section 11a can penetrate.
  • the thread 133 of the second section 11b, made at said sleeve is an internal thread, that is to say a thread arranged on the face of said sleeve located on the side of the first electrode 12 forming the central core of the second section. .
  • the internal threading 133 of the second electrode 13 of the second section 11b is adapted to cooperate with the external thread of the peripheral ring 16 of the first section 11a to assemble said second section 11b on said first section 11a.
  • the assembly of the second section 11b on the first section 11a is simple to perform. Indeed, once the thread 133 of the second section 11b engaged with the threading of the peripheral ring 16, it will suffice to achieve the assembly to rotate said peripheral ring 16 by keeping the body of the second section 11b immobile in rotation relative to the body of the first section 11a.
  • the ring 16 peripheral and / or the body of the first section 11a comprise a recess forming a bearing surface adapted to cooperate with gripping means.
  • the peripheral ring 16 and the body of the first section 11a both comprise such recesses, in order to be able to immobilize the body of the first section 11a when the peripheral ring 16 is rotated.
  • the peripheral ring 16 comprises in the example illustrated by the figure 6 blind holes 161, adapted to cooperate with a pin key, and the body of the first section 11a comprises flats 111.
  • the body of the first section 11a comprises flats 111.
  • first section 11a and the second section 11b comprise respective means, called “rotational locking means", adapted to cooperate to immobilize in rotation the body of the second section 11b with respect to the body of the first section. 11a during assembly of said second section 11b on said first section 11a.
  • rotational locking means further facilitates the assembly of the second section 11b on the first section 11a. Indeed, once the rotational locking means of the second section 11b engaged with the rotational locking means of the first section 11a, it is sufficient for the assembly to rotate the ring 16 peripheral with respect to the body of the first section 11a .
  • the rotational locking means are, in the first section 11a, in the form of a key 110.
  • said rotational locking means are for example in the form of a groove (not shown in the figures) in which said key can slide during the assembly of the second section 11b on the first section 11a.
  • the end of the second electrode 13 of the second section 11b surrounds the extension 130 of the second electrode 13 of the first section 11a and a portion of the peripheral ring 16 of said first section 11a.
  • the electrical contact between the first electrode 12 of the first section 11a and the first electrode 12 of the second section 11b can be established using any suitable means known to those skilled in the art.
  • the end of the first electrode 12 of the first section 11a forms a sleeve 121 adapted to receive an extension 120 of the first electrode 12 of the second section 11b.
  • the extension 120 of the first electrode 12 of the second section is devoid of a layer of electrically insulating material, and means are provided inside the sleeve 121 of the first electrode 12 of the first section 11a to establish the electrical contact between the first electrodes .
  • the electrical contact means of the sleeve 121 are of the multicontact type, for example a sleeve comprising shape memory, a coil spring or foils.
  • the electrical contact between the second electrode 13 of the first section 11a and the second electrode 13 of the second section 11b is for example established via the peripheral ring 16, the latter being optionally made of electrically conductive material.
  • the second electrode 13 of the first section 11a comprises means, called “electrical contact means", adapted to establish an electrical contact with the second electrode 13 of the second section at a contact zone of the extension 130 of the second electrode 13 of the first section 11a.
  • said electrical contact means is in the form of an electrically conductive peripheral seal 134.
  • electrical contact means for example an electrically conductive foil arranged at the periphery of the extension 130 of the second electrode 13 of the first section 11a.
  • electrical contact means could be carried by the second electrode 13 of the second section 11b, or at the same time by the first section 11a and the second section 11b.
  • the electric current which by skin effect tends to flow in the second electrode 13 closer to the electrically insulating layer 14, will tend to bypass the ring 16 device.
  • the electric current flows from the first electrode 12 of the first section 11a to the first electrode 12 of the second section 11b, then flows back from the second electrode 13 of the second section 11b to the second electrode 13 of the first section 11a, we see that the shortest path allowing the electric current to pass as close to the electrically insulating layer 14 is to go through the contact zone of the extension 130 of the first section 11a. In doing so, the electric current will tend to bypass the peripheral ring 16.
  • the extension 130 of the second electrode 13 of the first section 11a has two seals 135 shape memory, a coil spring or foils.
  • the second electrode 13 of the first section 11a comprises means, called “electrical contact means", adapted to establish an electrical contact with the second electrode 13 of the second section at a contact zone of the extension 130 of the second electrode 13 of the first section 11a.
  • said electrical contact means is in the form of an electrically conductive peripheral seal 134.
  • electrical contact means for example an electrically conductive foil arranged at the periphery of the extension 130 of the second electrode 13 of the first section 11a.
  • electrical contact means could be carried by the second electrode 13 of the second section 11b, or at the same time by the first section 11a and the second section 11b.
  • the electric current which by skin effect tends to flow in the second electrode 13 closer to the electrically insulating layer 14, will tend to bypass the ring 16 device.
  • the electric current flows from the first electrode 12 of the first section 11a to the first electrode 12 of the second section 11b, then flows back from the second electrode 13 of the second section 11b to the second electrode 13 of the first section 11a, we see that the shortest path allowing the electric current to pass as close to the electrically insulating layer 14 is to go through the contact zone of the extension 130 of the first section 11a. In doing so, the electric current will tend to bypass the peripheral ring 16.
  • the extension 130 of the second electrode 13 of the first section 11a has two seals 135 sealing devices.
  • said seals 135 peripheral sealing are arranged between the contact zone of said extension 130 and the peripheral ring 16. In this way, and as indicated above, the electric current will tend to circumvent said seals 135 peripheral sealing, and the risk that they are damaged by the flow of electric current are reduced.
  • the figure 7 schematically represents an alternative embodiment of the first section 11a illustrated by the Figures 4 to 6 .
  • said first section 11a (shown with a gray filling on the figure 7 ) has two peripheral rings arranged at opposite ends of said first section 11a.
  • the first section 11a comprises, at an end opposite the end of the peripheral ring 16 described with reference to FIGS. Figures 4 to 6 another peripheral ring 17.
  • Said peripheral ring 17 is movable in rotation and immobile in translation relative to the body of the first section 11a.
  • said peripheral ring 17 comprises a thread adapted to cooperate with a thread of one end of a body of a third section 11c to assemble said third section 11c on said first section 11a.
  • the threading of the peripheral ring 17 of the first section 11a is an external thread.
  • the second electrode 13 of the first section 11a comprises an extension 136 between the peripheral ring 17 and a termination 137 of the end of said first section 11a.
  • the second electrode 13 forms at the end of said third section 11c a sleeve inside which the extension 136 of the second electrode 13 of the first section 11a can penetrate.
  • the threading of the third section 11c, made on the second electrode at said sleeve is an internal thread, that is to say a thread arranged on the face of said sleeve located on the side of the first electrode 12 forming the central core of the third section 11c.
  • the internal threading of the second electrode 13 of the third section 11c is adapted to cooperate with the external thread of the ring 17 peripheral of the first section 11a to assemble said third section 11c on said first section 11a.
  • peripheral ring 16 and the extension 130 can also be applied to the peripheral ring 17 and the extension 136 of the second electrode 13 of the first section 11a.
  • the first section 11a is devoid of electrically insulating layer 14 and first electrode 12.
  • the electrically insulating layers 14 and the first respective electrodes 12 of the second section 11b and the third section 11c extend inside the first section 11a, and cooperate therein so as to ensure both the electrical continuity of the first electrode 12 and the electrical insulation between said first electrode 12 of the tool 10a and the second electrode 13 of the first section 11a.
  • the figure 8 schematically represents an alternative embodiment of the first section 11a of the figure 7 wherein said first section 11a includes a portion of the electrically insulating layer 14 and a portion of the first electrode 12 of the tool 10a.
  • the first electrode 12 of the first section 11a forms two opposite sleeves, respectively 121 and 123, adapted to receive respective extensions 120 and 122 of the first electrode of the second section 11b and the first electrode of the third section 11c.
  • Such arrangements are advantageous in that they make it possible to have identical ends for the second section 11b and the third section 11c, which facilitates their production and interior layout.
  • the electrical stimulation device 10 has been described by considering a peripheral ring 16 having an external thread.
  • a peripheral ring 16 having an internal thread adapted to cooperate with an external thread formed on the periphery of the body of the second section 11b.
  • the peripheral ring 16 is then in the form of a sleeve inside which can penetrate the end of the second section 11b.
  • a first section 11a comprising two peripheral rings 16, 17, one and / or the other of said two peripheral rings may comprise an internal thread adapted to cooperate with an external thread formed on the periphery of the second electrode 13d. another section.
  • the electrical stimulation device 10 may comprise only two sections 11, but it may also include more.
  • said electrical stimulation device comprises at least three sections, the means for locking in rotation of at least one section are not geometrically adapted to cooperate with the rotational locking means of at least three sections. another stretch.
  • Such arrangements make it possible to use said rotational locking means as polarizers.
  • Such a keying function may be advantageous especially in the case where the sections comprise accumulators of electrical energy and / or electrical protection devices.
  • the position of the sections relative to each other may be essential, and may be provided by the rotational locking means further providing a keying function.
  • the keying function can be obtained by considering different number keys of different sizes, different positions, etc. from one section to another.

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Claims (9)

  1. Elektrische Vorrichtung (10) zum Stimulieren von Bohrlöchern, wobei die Vorrichtung mehrere Abschnitte (11) beinhaltet, die angepasst sind, um derart an den Enden zusammengesetzt zu werden, um ein Werkzeug (10a) zu bilden, das eine erste Elektrode beinhaltet, die durch erste Elektroden der Abschnitte (11) gebildet wird, und eine zweite Elektrode, die durch zweite Elektroden der Abschnitte (11) gebildet wird, wobei die zweite Elektrode eine von der ersten Elektrode elektrisch isolierte Umfangselektrode ist, wobei die erste Elektrode und die zweite Elektrode des Werkzeugs im Bereich eines der Enden des Werkzeugs einen Stimulationskopf (15) bilden, dadurch gekennzeichnet, dass ein Ende eines Körpers eines ersten Abschnitts (11a) einen im Verhältnis zum Körper des ersten Abschnitts drehbeweglichen und translatorisch unbeweglichen Umfangsring (16) beinhaltet, wobei der Umfangsring ein Gewinde beinhaltet, das angepasst ist, um mit einem Gewinde (133) der zweiten Elektrode eines Endes eines zweiten Abschnitts (11b) zusammenzuwirken, um den zweiten Abschnitt mit dem ersten Abschnitt zusammenzusetzen, und dadurch, dass:
    - da das Gewinde des Umfangsrings (16) ein Außengewinde ist, die zweite Elektrode (13) des ersten Abschnitts (11a) eine Verlängerung (130) zwischen dem Umfangsring (16) und einem Abschluss (131) des Endes des ersten Abschnitts beinhaltet, oder
    - da das Gewinde der zweiten Elektrode des zweiten Abschnitts (11b) ein Außengewinde (133) ist, die zweite Elektrode (13) des zweiten Abschnitts (11b) eine Verlängerung zwischen dem Gewinde und einem Abschluss des Endes des zweiten Abschnitts beinhaltet,
    wobei der erste Abschnitt und/oder der zweite Abschnitt Mittel beinhalten, welche "elektrische Kontaktmittel" genannt werden, die angepasst sind, einen elektrischen Kontakt zwischen der zweiten Elektrode des ersten Abschnitts und der zweiten Elektrode des zweiten Abschnitts im Bereich einer Kontaktzone der Verlängerung herzustellen, wenn der zweite Abschnitt mit dem ersten Abschnitt zusammengesetzt wird, wobei die Kontaktzone eine Umfangszone der Verlängerung ist.
  2. Vorrichtung (10) nach Anspruch 1, dadurch gekennzeichnet, dass die Verlängerung eine Umfangsdichtung (135) beinhaltet, die zwischen der Kontaktzone der Verlängerung und dem Außengewinde angeordnet ist.
  3. Vorrichtung (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die elektrischen Kontaktmittel eine elektrisch leitende Umfangsdichtung (134) und/oder eine elektrisch leitende Metallfolie beinhalten.
  4. Vorrichtung (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der erste Abschnitt (11a) und der zweite Abschnitt (11b) jeweilige, "Drehblockiermittel" (110) genannte Mittel beinhalten, die angepasst sind, um zusammenzuwirken, um einen Körper des zweiten Abschnitts (11b) im Verhältnis zum Körper des ersten Abschnitts (11a) beim Zusammensetzen des zweiten Abschnitts mit dem ersten Abschnitt drehunbeweglich zu machen.
  5. Vorrichtung (10) nach Anspruch 4, dadurch gekennzeichnet, dass, da die Vorrichtung mindestens drei Abschnitte (11) beinhaltet, die Drehblockiermittel (110) mindestens eines Abschnitts geometrisch nicht angepasst sind, um mit den Drehblockiermitteln mindestens eines anderen Abschnitts zusammenzuwirken.
  6. Vorrichtung (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Umfangsring (16) und/oder der Körper des ersten Abschnitts (11a) eine Vertiefung beinhalten, welche eine Auflagefläche bilden, die angepasst ist, mit Greifmitteln zusammenzuwirken.
  7. Vorrichtung (10) nach Anspruch 6, dadurch gekennzeichnet, dass die Vertiefung ein Sackloch (161) oder eine Abflachung (111) ist.
  8. Vorrichtung (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass ein Ende der ersten Elektrode (12) des ersten Abschnitts (11a) eine Muffe (121) bildet, die angepasst ist, um eine Verlängerung (120) der ersten Elektrode (12) des zweiten Abschnitts (11b) aufzunehmen, wobei die Muffe (121) Mittel beinhaltet, die angepasst sind, um einen elektrischen Kontakt zwischen den ersten Elektroden (12) herzustellen.
  9. Vorrichtung (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der erste Abschnitt (11a) einen weiteren, im Verhältnis zum Körper des ersten Abschnitts, drehbeweglichen und translatorisch unbeweglichen Umfangsring (16) beinhaltet, wobei der weitere Umfangsring ein Gewinde beinhaltet, das angepasst ist, um mit einem Gewinde der zweiten Elektrode eines dritten Abschnitts (11c) zusammenzuwirken, um den dritten Abschnitt (11c) mit dem ersten Abschnitt (11a) zusammenzusetzen.
EP13815403.4A 2012-12-07 2013-12-06 Elektrische vorrichtung zur bohrlochstimulation Active EP2929132B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1261804A FR2999221B1 (fr) 2012-12-07 2012-12-07 Dispositif electrique de stimulation de puits d'extraction de ressource souterraine
PCT/EP2013/075792 WO2014086969A2 (fr) 2012-12-07 2013-12-06 Dispositif électrique de stimulation de puits

Publications (2)

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EP2929132B1 true EP2929132B1 (de) 2018-11-28

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FR3015548B1 (fr) * 2013-12-20 2016-01-08 Ene29 S Ar L Outil de stimulation de puits comportant des elements capacitifs electriquement en parallele
FR3015549B1 (fr) * 2013-12-20 2019-05-10 Ene29 S.Ar.L. Dispositif de stimulation de puits et procede de diagnostic d'un tel dispositif de stimulation
FR3037612B1 (fr) 2015-06-17 2017-06-09 Ene29 S Ar L Outil de generation d'ondes sismiques tel un eclateur d'un dispositif de generation d'arcs electriques
US10693251B2 (en) 2017-11-15 2020-06-23 Baker Hughes, A Ge Company, Llc Annular wet connector
US11821269B1 (en) * 2022-05-03 2023-11-21 Schlumberger Technology Corporation Swivel system for downhole well tool orientation

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FR2999221A1 (fr) 2014-06-13
CA2895323A1 (fr) 2014-06-12
US20150308249A1 (en) 2015-10-29
CA2895323C (fr) 2020-11-10
WO2014086969A2 (fr) 2014-06-12
WO2014086969A3 (fr) 2014-08-07
FR2999221B1 (fr) 2017-05-19
EP2929132A2 (de) 2015-10-14
US9732601B2 (en) 2017-08-15

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