EP1473256B1 - Verfahren und Vorrichtung zur Datenübertragung zwischen Übertage und einem untertägigen Salzhohlraum - Google Patents

Verfahren und Vorrichtung zur Datenübertragung zwischen Übertage und einem untertägigen Salzhohlraum Download PDF

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Publication number
EP1473256B1
EP1473256B1 EP04291047A EP04291047A EP1473256B1 EP 1473256 B1 EP1473256 B1 EP 1473256B1 EP 04291047 A EP04291047 A EP 04291047A EP 04291047 A EP04291047 A EP 04291047A EP 1473256 B1 EP1473256 B1 EP 1473256B1
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EP
European Patent Office
Prior art keywords
transceiver
measuring device
cavity
cavern
conductor cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04291047A
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English (en)
French (fr)
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EP1473256A1 (de
Inventor
Jean-Michel Barbot
Thierry Pichery
Christian Sirieix
Bruno Lebrière
Denis Hafon
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.)
Geoservices SA
Engie SA
Original Assignee
Gaz de France SA
Geoservices SA
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Publication of EP1473256A1 publication Critical patent/EP1473256A1/de
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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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E21B47/16—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the drill string or casing, e.g. by torsional acoustic waves
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32008—Plural distinct articulation axes

Definitions

  • the present invention relates to the general field of information transmission from a saline cavity drilled in the ground to the surface. More specifically, the invention relates to the transmission of information collected at any height of a salt cavity while allowing the normal operation of the cavity (filling, racking, etc.).
  • Saline cavities are generally used for underground storage of hydrocarbons, such as natural gas or oil.
  • hydrocarbon storage may be necessary to maintain an energy potential in the event of a crisis (so-called strategic storage) or to make it possible to absorb seasonal peaks in consumption (so-called seasonal storage).
  • a saline cavity is obtained by drilling a well through layers of geological formation (rock salt rock) and by leaching by freshwater circulation to create the shape and volume of the cavity.
  • a production tube is lowered to the bottom of the cavity for filling the hydrocarbon cavity.
  • the internal pressure must remain, on the one hand slightly higher than the formation pressure to avoid any risk of subsidence and loss of useful volume by salt creep, and on the other hand, less than the pressure of fracturing the rock to ensure the tightness of the cavity.
  • the volume of gas contained in the cavity is highly dependent on the storage pressure, a storage gain of a few millibars on this pressure may result in several hundred thousand additional cubic meters of gas stored. Under these conditions, the continuous monitoring of the pressure during the filling the cavity makes it possible to accurately determine the volume of gas to be stored.
  • the present invention therefore aims to overcome such drawbacks by proposing a method and an information transmission device between a saline cavity and the surface which make it possible to obtain information at any height of the cavity while allowing normal operation of the cavity. the cavity.
  • a method of transmitting information between a saline cavity and the soil surface the cavity being drilled through layers of geological formation and connected to the surface by an access shaft at least in part.
  • cuvelé by metal tubes and having at least one safety valve the method being characterized in that it consists of: suspending a train of tools to a fastening system positioned in the access well downstream of the valve safety and in electrical contact with the metal tubes, the train of tools comprising at least one measuring device connected to the coupling system by a first conductor cable section and an information transmitter / receiver operating by waves and connected to the measuring device by a second conductor cable section, the transceiver being positioned to be in contact with a structure means connected to the cavity; and coupling between the transmitter / receiver and the structure means to allow information to be transmitted between the meter and the surface by propagating waves through the structure means.
  • the measuring device or devices being suspended from the attachment system positioned in the access well, it is thus possible to perform measurements at any height in the cavity.
  • the measurements made in the cavity are thus reliable.
  • the tool train is suspended downstream of the safety valve, it is not necessary to open it to perform the measurements which avoids any safety problem and allows normal operation of the cavity.
  • the transmitter / receiver is in contact with the bottom of the cavity and operates by electromagnetic waves propagating through the geological formation layers.
  • the coupling between the transmitter / receiver and the geological formation layers is an electrical coupling which is carried out by the presence of an electrolyte covering the bottom of the cavity.
  • the electrolyte is preferably an electrically conductive brine permanently present at the bottom of the cavity.
  • the electrolyte can be added to the bottom of the cavity.
  • the transmitter / receiver operates by mechanical waves and the coupling with the structure means is a mechanical coupling which is performed by the presence of a vibrating element coupled to the structure means.
  • This vibrating element can be placed at the bottom of the cavity or be coupled to the metal tubes.
  • the measuring apparatus may be suspended in the cavity at any height or be suspended directly in the access well. In the latter case, it is necessary to provide the apparatus with measurement of an insulating coating to avoid any electrical contact between it and the metal tubes of the access well.
  • FIG. 1 represents, in section, a saline cavity for underground storage of hydrocarbons having a device for implementing the method according to the invention.
  • the saline cavity 2 is drilled through layers of geological formation (typically rock salt rock) and connected to the surface by an access well 4.
  • the cavity is formed by leaching by fresh water circulation to create the shape and volume of the cavity.
  • a deposit of insoluble matter and brine 6 generally covers the bottom of the cavity.
  • the dimensions of the cavity thus formed are proportional to the desired volume of storage.
  • the saline cavity may have a height of more than 200 meters.
  • the access well 4 comprises a cylindrical outer wall 8 which delimits an annular space 10 cemented with a bulging column 12.
  • a device 14 seals between the outer wall of the cavity and the colazage column.
  • a production column 16 (“casing") formed of metal tubes has descended inside the grading column 12 to the bottom of the saline cavity to allow the circulation of the fresh water necessary for the creation of the cavity and replacing the brine with the liquid or gas to be stored in the underground storage cavity. Once the cavity has been filled, the production column 16 is generally cut off from the roof of the cavity. A safety valve 18 is then placed across the production column to allow its closure.
  • a tool train is suspended in the production column 16 to an attachment system 20.
  • the attachment system 20 is positioned in the production column downstream of the safety valve 18 according to a series of steps that will be described later.
  • the attachment system 20 may be a standard equipment consisting of at least three arms abutting the inner walls of the production column. Such an arm attachment system allows hydrocarbon injection operations in the cavity but not the withdrawal operations.
  • the attachment system can also be constituted by a device that typically comes to be positioned on a specific seat integrated in the production column, this type of device having the advantage over the previous to allow to carry out operations of withdrawal as well than injection operations.
  • the attachment system 20 is in electrical contact with the inner walls of the metal tubes of the production column 16 (for example via its arms or the seat on which it is positioned).
  • the anchorage point of the tool train can be positioned at any point in the production column which is located downstream of the safety valve 18.
  • the tool train comprises at least one measuring device 22 suspended from the attachment system 20 by a conductive cable 24 in order to ensure electrical continuity between the measuring device (s) and the attachment system (a single device). Measure is shown in Figure 1).
  • the conductive cables may be smooth steel wires, electric cables or cables commonly used during work in smooth cable (“slick-line”) in the wellbore.
  • the measurement apparatus 22 includes logging tools (not shown) which may be pressure sensors, temperature sensors, samplers, flow meters, sonars, and the like. They also include means for transmitting and receiving electrical signals, possibly a memory for storing the measurements made by the logging tools and a battery supply of these different devices (not shown in the figures).
  • logging tools may be pressure sensors, temperature sensors, samplers, flow meters, sonars, and the like. They also include means for transmitting and receiving electrical signals, possibly a memory for storing the measurements made by the logging tools and a battery supply of these different devices (not shown in the figures).
  • the tool train further comprises a transmitter / receiver 26 which forms an antenna operating by electromagnetic waves (radio waves, etc.) or mechanical (acoustic waves, seismic, etc.).
  • This transmitter / receiver is connected to the measuring apparatus 22 via a conductive cable 28 to provide electrical continuity between the transmitter / receiver and the measuring apparatus to enable the transmitting and receiving electrical signals equipping the measuring apparatus to exchange information with the transmitter / receiver.
  • the conductor cable used, of the piano wire type, is a cable commonly used when working with smooth cable (“slick-line”) in the wellbore.
  • the length of the cable 28 is calculated so that the transmitter / receiver 26 is in contact with a structure means fixed linked to the cavity.
  • This structure means may be the bottom of the cavity, the distillation column 12 or the production column 16.
  • the emitter / receiver 26 is in contact with the deposition of insoluble matter and brine 6 which covers the bottom of the cavity.
  • the transmitter / receiver 26 may be coupled with the lower part of the production column 16 or with the lower part of the stacking column 12 (in dashed lines in the figure).
  • connection cable 28 is not necessary if the measuring device 22 is connected directly to the transmitter / receiver 26. Likewise, the connecting cable 24 can be avoided if the measuring device 22 is connected directly to the transmitter 26. 20.
  • a cable 25 is shown which plays the role of both the mechanical connecting cable 24 and the information transmission cable 28.
  • the length of the tool train corresponds approximately to the distance between the saline water level at the bottom of the cavity and the bottom of the production column and can greatly exceed one hundred meters.
  • the rock salt rock constituting the geological formation layers has a resistivity favorable to a propagation of such waves, that is to say of the order of several hundred ohms per meter.
  • the transmitter / receiver modulates waves having frequencies adapted so that propagation through the geological formation layers is possible.
  • the waves used have a frequency lower than 1000 Hz.
  • the waves are also modulated according to the information to be transmitted and their transmission power is of the order of a few watts.
  • the coupling achieved between the transceiver and the geological formation layers are electrical in nature.
  • the coupling between the transmitter / receiver and the structure means is mechanical in nature.
  • the acoustic waves are emitted by a vibrating element 26 (of the piezoelectric type) placed at the bottom of the cavity or coupled to the lower part of the production column 16 or of the casing column 12.
  • the vibrating element modulates waves having frequencies adapted to allow their propagation to the surface.
  • the waves thus used have a frequency of between 10 Hz and 1 kHz. They are also modulated according to the information to be transmitted and their transmission power is of the order of a few watts to a few kW.
  • the information transmitted by electromagnetic or mechanical waves from the cavity to the surface are the measurements made by the various logging tools equipping the measuring apparatuses.
  • the waves conveying this information are picked up on the surface by a decoder 30, one of whose poles is connected to the wellhead 31 and the other pole planted in the soil at a sufficient distance from the wellhead.
  • the decoder 30 makes it possible to decode the waves transmitted by the transmitter / receiver in order to decipher the measurement values made by the logging tools.
  • the information can be transmitted to the surface continuously and in real time or discontinuously by data packets stored in a memory of the measuring apparatus.
  • the transmission of information can also be carried out in the opposite direction, ie from the surface to the measuring devices.
  • the decoder 30 is also able to transmit electromagnetic or mechanical waves to the transmitter / receiver according to an identical propagation mode.
  • the transmitted information can be used to control the measuring devices, for example to change the frequency and transmission power of the waves transmitted to the surface to preserve a maximum battery fitted to these measuring devices.
  • the production column 16 is provided at its upper end with two removable anti-blowout plugs 32 which ensure the seal between the cavity and the surface during the establishment of the tool train.
  • a sealing chamber 34 also removable, is positioned upstream of the two anti-blowout shutters 32.
  • the airlock is disconnected from the production column to allow the introduction of the transmitter / receiver. It is attached to a conductive cable wound on a pulley (reference 36 in Figures 2A to 2E) and passing through the sealing chamber.
  • the sealing chamber 34 is reconnected on the production column.
  • the blowout preventers 32 can then be opened to allow the descent of the transmitter / receiver (FIG. 2A). By operating the pulley 36, it is thus lowered into the production column 16, downstream of the safety valve 18 which is also open.
  • blowout preventers 32 are closed (FIG. 2B). It should be noted that the choice of the descent / descent height of the transmitter / receiver will directly affect the height in the cavity of the measuring apparatus. This choice is made taking into account in particular the depth of the cavity. Closing the blowout preventers 32 has the effect, on the one hand to ensure sealing between the cavity and the airlock, and on the other hand to block the conductor cable to maintain the transmitter / receiver in suspension.
  • the next step is to again disconnect the airlock 34 to cut the conductor cable upstream of the blowout preventers 32, the transmitter / receiver 26 being kept in suspension in the production column by closing these shutters.
  • a measuring apparatus 22 is then attached to the free end of the conducting cable connected to the transmitter / receiver and connected upstream to the cable wound on the Pulley 36. This measuring device is put in place in the airlock ( Figure 2C).
  • the sealing chamber 34 is then reconnected on the production column 16 (FIG. 2D), the blowout preventers 32 and the safety valve 18 are reopened and the measuring device 22 is lowered downstream of the safety valve. . These last two steps are repeated for each measuring device that is to be suspended in the cavity.
  • the attachment system is then lowered in turn in the production column operating in a similar way to the descent of the measuring devices.
  • the attachment system is thus lowered downstream of the safety valve 18 and at a height allowing the transmitter / receiver to come into contact with a fixed structure means connected to the cavity (cavity bottom or lower part of the column of casing or production). It is then anchored in the inner walls of the production column. This anchoring is carried out either by arms abutting the inner walls of the production column, or by a seat integrated in the production column.
  • the blowout preventers 32 and the airlock 34 are then disconnected from the production column (FIG. 2E).
  • the measuring device (s) must preferably be positioned outside the production column (that is to say suspended in the cavity itself). Indeed, it is important to avoid any electrical contact between these measuring devices and the internal walls of the production column. However, if it appears necessary to position one or more of these measuring devices in the production column, an insulating coating may be used to cover the measuring instruments. Alternatively, an insulating composite material can be used for the realization of the housing of these devices.
  • the tool train thus suspended in the production column, it is then possible to transmit information between the surface and the measuring devices by propagation of electromagnetic or mechanical waves through the structure means.
  • the method according to the invention that makes it possible to measure at any height in the cavity while allowing normal operation of the well has multiple advantages.
  • the method according to the invention has the advantage of allowing, during the filling operation of the cavity, to obtain continuous and real-time monitoring of the various physical parameters of the cavity (temperature, pressure, etc. .) which determine the useful storage volume. It is thus possible to store more fluid, in particular hydrocarbon gases, safely.
  • Another advantage of the continuous and real-time monitoring of the physical parameters of the cavity during the filling operation lies in the fact that it is possible to optimize the flow rate and therefore the duration of the injection.
  • the measurements are carried out in the cavity and not at the wellhead, which makes it possible to obtain much more reliable results.
  • the installation and the adaptation of the device for implementing the method are furthermore possible in cavities already in operation without modifying the structure of the access well, which makes it possible to optimize the operating and operating performances. generalize the use without costly adjustments on the well.
  • Such a device is also easily removable.
  • the method according to the invention can be applied for different configurations of the cavity.
  • the example illustrated in the figures represents a configuration in which the production column is cut at the roof of the cavity.
  • the steps of setting up the tool train are identical to those described above, the length between the attachment system and the transceiver being simply reduced.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Electromagnetism (AREA)
  • Geophysics And Detection Of Objects (AREA)
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Claims (13)

  1. Verfahren zur Übertragung von Informationen zwischen einer Salzhöhle und der Erdoberfläche, wobei die Höhle (2) angebohrt ist durch Schichten einer geologischen Formation und mit der Oberfläche durch einen Zugangsschacht (4) verbunden ist, der wenigstens teilweise mit Metallrohren (16) verschalt ist und wenigstens ein Sicherheitsventil (18) umfaßt, wobei das Verfahren dadurch gekennzeichnet ist, daß es darin besteht:
    - ein Werkzeugfahrgestell an ein Hängesystem (20) zu hängen, das in dem Zugangsschacht abwärts des Sicherheitsventils angeordnet und in elektrischem Kontakt mit den Metallrohren ist, wobei das Werkzeugfahrgestell wenigstens eine Meßvorrichtung (22), die mit dem Hängesystem durch einen ersten Leiterkabelabschnitt (24) verbunden ist, und einen Sender/Empfänger für Informationen (26) umfaßt, der mit Wellen arbeitet und mit der Meßvorrichtung über einen zweiten Leiterkabelabschnitt (28) verbunden ist, wobei der Sender/Empfänger derart angeordnet ist, daß er in Kontakt mit einem Strukturmittel ist, das mit der Höhle verbunden ist, und
    - eine Kopplung zwischen dem Sender/Empfänger (26) und dem Strukturmittel herzustellen, um eine Übertragung der Informationen zwischen der Meßvorrichtung (22) und der Oberfläche durch Fortpflanzung von Wellen über das Strukturmittel zuzulassen.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Sender/Empfänger (26) in Kontakt mit dem Boden der Höhle ist und über elektromagnetische Wellen arbeitet, die sich durch Schichten einer geologischen Formation fortpflanzen.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Kopplung zwischen dem Sender/Empfänger (26) und den Lagen einer geologischen Formation eine elektrische Kopplung ist, die durch die Gegenwart eines Elektrolyten geschieht, weicher den Boden der Höhle bedeckt.
  4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der Elektrolyt eine elektrizitätsleitende Salzlösung (6) ist, die permanent am Boden der Höhle vorliegt.
  5. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der Elektrolyt am Boden der Höhle zugegeben wird.
  6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Sender/Empfänger (26) über mechanische Wellen arbeitet.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Kopplung zwischen dem Sender/Empfänger (26) und dem Strukturmittel eine mechanische Kopplung ist, die durch die Gegenwart eines vibrierenden Elements geschieht, das mit dem Strukturmittel gekoppelt ist.
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß das vibrierende Element mit dem Boden der Höhle oder den Metallrohren (16) gekoppelt ist.
  9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Meßvorrichtung (22) auf irgendeiner Höhe in der Höhle aufgehängt ist.
  10. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Meßvorrichtung (22) in dem Zugangsschacht (4) aufgehängt ist.
  11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß die Meßvorrichtung (22) mit einer isolierenden Auskleidung derart versehen ist, daß ein elektrischer Kontakt zwischen den metallischen Wänden des Zugangsschachts vermieden wird.
  12. Verfahren nach der bis 11, dadurch gekennzeichnet, daß der Schritt, der darin besteht, das Werkzeugfahrgestell aufzuhängen, besteht in:
    a) dem Verbinden eines Senders/Empfängers (26) mit einem Leiterkabel;
    b) dem Öffnen eines Sicherheitsventils (18) und den Anti-Eruptionsverschlüssen (32) des Zugangsschachts (4);
    c) dem Hinablassen des Senders/Empfängers (26) in den Zugangsschacht abwärts des Sicherheitsventils (18) und der Anti-Eruptionsverschlüsse (32);
    d) dem Verschließen der Anti-Eruptionsverschlüsse (32) des Zugangsschachts zum Blockieren des Leiterkabels, um den Sender/Empfänger (26) aufgehängt zu halten und die Dichtheit des Schachts sicherzustellen;
    e) dem Abschneiden des Kabels vor den Anti-Eruptionsverschlüssen (32);
    f) dem Verbinden wenigstens einer Meßvorrichtung (22) mit dem Leiterkabel;
    g) dem Aufgreifen der Schritte b) bis e) für die Meßvorrichtung (22);
    h) dem Verbinden des Hängesystems (20) mit dem Leiterkabel; und
    i) dem Wiederaufnehmen der Schritte b) bis e) für das Hängesystem (20).
  13. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß es ein Hängesystem (20), wenigstens eine Meßvorrichtung (22), die mit dem Hängesystem durch einen ersten Leiterkabelabschnitt (24) verbunden ist, und einen Sender/Empfänger für Informationen (26) umfaßt, der mit der Meßvorrichtung über einen zweiten Leiterkabelabschnitt (28) verbunden ist.
EP04291047A 2003-04-30 2004-04-22 Verfahren und Vorrichtung zur Datenübertragung zwischen Übertage und einem untertägigen Salzhohlraum Expired - Lifetime EP1473256B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0305367 2003-04-30
FR0305367A FR2854425B1 (fr) 2003-04-30 2003-04-30 Procede et dispositif de transmission d'informations entre une cavite saline et la surface du sol

Publications (2)

Publication Number Publication Date
EP1473256A1 EP1473256A1 (de) 2004-11-03
EP1473256B1 true EP1473256B1 (de) 2006-11-15

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US (1) US7151465B2 (de)
EP (1) EP1473256B1 (de)
CA (1) CA2464991C (de)
DE (1) DE602004003161T2 (de)
DK (1) DK1473256T3 (de)
FR (1) FR2854425B1 (de)

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CN108222919B (zh) * 2016-12-12 2021-08-03 中国石油天然气股份有限公司 应用于盐穴储气库注气排卤阶段的气水界面监测方法
CN109585870A (zh) * 2018-10-25 2019-04-05 中盐金坛盐化有限责任公司 基于盐穴的储能电池终止运行后处置方法

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DE602004003161D1 (de) 2006-12-28
FR2854425B1 (fr) 2005-07-29
US7151465B2 (en) 2006-12-19
DE602004003161T2 (de) 2007-09-06
CA2464991C (en) 2011-02-08
US20040246140A1 (en) 2004-12-09
CA2464991A1 (en) 2004-10-30
FR2854425A1 (fr) 2004-11-05
EP1473256A1 (de) 2004-11-03
DK1473256T3 (da) 2007-03-19

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