EP0841266B1 - Procédé et dispositif pour inonder des cavernes de stockage de gaz - Google Patents

Procédé et dispositif pour inonder des cavernes de stockage de gaz Download PDF

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Publication number
EP0841266B1
EP0841266B1 EP19970250323 EP97250323A EP0841266B1 EP 0841266 B1 EP0841266 B1 EP 0841266B1 EP 19970250323 EP19970250323 EP 19970250323 EP 97250323 A EP97250323 A EP 97250323A EP 0841266 B1 EP0841266 B1 EP 0841266B1
Authority
EP
European Patent Office
Prior art keywords
cavern
pipe
flood
liquid column
pressure
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
EP19970250323
Other languages
German (de)
English (en)
Other versions
EP0841266A3 (fr
EP0841266A2 (fr
Inventor
Bernd Ing. Faske
Detlef Dipl.-Ing. Miersch
Gernot Dipl.-Ing. Jäpel
Frank Dr. Dipl.-Ing. Heinze
Helfried Dipl.-Geol. Zipper
Claudius Dipl.-Ing. Arnold
Gerd Dipl.-Ing. Hänsler
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.)
Untergrundspeicher und Geotechnologie Systeme GmbH
VNG Verbuhdbetz Gas AG
Original Assignee
UNTERGRUNDSPEICHER und GEOTECH
Untergrundspeicher und Geotechnologie Systeme GmbH
VNG Verbuhdbetz Gas AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UNTERGRUNDSPEICHER und GEOTECH, Untergrundspeicher und Geotechnologie Systeme GmbH, VNG Verbuhdbetz Gas AG filed Critical UNTERGRUNDSPEICHER und GEOTECH
Publication of EP0841266A2 publication Critical patent/EP0841266A2/fr
Publication of EP0841266A3 publication Critical patent/EP0841266A3/fr
Application granted granted Critical
Publication of EP0841266B1 publication Critical patent/EP0841266B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • E21B41/0057—Disposal of a fluid by injection into a subterranean formation

Definitions

  • the invention relates to a method and a device for flooding gas-filled storage caverns Implementation of renovation or reconstruction work.
  • a gas cavern by continuing Brine work is generally flooding the cavern cavity.
  • the invention has for its object a method and a device for flooding a cavern develop that pose no risk from mountain formwork are exposed to pressure-dependent use Controlled safety shut-off valves as a requirement automated operational management for flooding the cavern allow a constantly hydraulic Securing against pressure in the cavern Ensure gas and in the nominal current range avoid tearing off the flood current.
  • the object is achieved by a method according to the features of claim 1 and by a Device according to the features of claim 6 solved. Further advantageous training of the Invention emerge from the subclaims 2 to 5 and 7 to 11.
  • this pillar becomes one hydrostatic, the cavern internal pressure automatically compensating liquid column that the cavern hydraulically closed.
  • the device according to the invention includes a flood line from an outer and one Inner tube, its tube cross-sections during installation into the cavern, which is under internal pressure are secured against gas breakdown.
  • Into the outer tube preferably on the pipe shoe pullable stopper is closed and overflow openings to the outer annulus between the outer tube and the piping of the cavern bore is the inner tube above the overflow openings mounted that an inner annulus arises, the of the flood medium in the reverse flow direction can be flowed through.
  • the liquid column in a lower section of the flood line between the tubular shoe of the outer tube and the tubing string hanger of the inner tube forms a hydraulic lock opposite the internal pressure in the cavern and prevented so the gas entry into the flood line and over the flood line in the cavern head.
  • a Pipe segment arranged to adjust the flow resistance serves in the entire flood line.
  • the pipe segment is also in the tubing string hanger of the inner tube and with Equipped with means for connecting further pipe segments.
  • Throttle elements are used, which are preferred to be arranged in the area of the interchangeable pipe segment are.
  • the one to be used to flood the storage cavern Flood medium is through the inner tube of the flood line supplied, flows from the foot area of the inner tube in the inner annulus between the outer and the Inner tube and then rises in this annulus up to the level of the overflow openings of the outer tube and from there it passes through the outer annulus between the outer tube and the piping of the cavern bore into the cavern.
  • the device according to the invention has in its Execution no mechanically moving equipment parts and is therefore completely not susceptible to repairs.
  • the flood line with which the liquid column in Dependency on yourself during the flood process changing internal pressure of the cavern set up automatically offers absolute security against Gas kickback in the cavern head and against pressure surge into the entire pipe system for flooding the cavern.
  • the solution according to the invention ensures a continuous storage of the in the cavern to manufacture and maintain the geomechanically conditional minimum internal pressure of existing gas volume, whereby a further advantage can be achieved.
  • the invention enables the cavern to be flooded with a liquid medium, preferably with a fully saturated one Brine.
  • the invention is intended to be based on an exemplary embodiment are explained in more detail.
  • the Associated Drawing shows the flood line according to the invention Flood a storage cavern and to build one the inside pressure of the cavern compensating liquid column in a schematic representation.
  • the cavern 19 with the cavern bore 16 and the cavern sump 20, for example served as a storage for a gaseous medium, to flood completely.
  • the stored gaseous Medium was partially outsourced in a known manner.
  • the cavern 19 is a geomechanically necessary Internal pressure remained.
  • the invention is based a flood line in the cased cavern bore 16 13 installed, which consists of an outer tube 10, the on the tubular shoe 5 with a suitable, pullable plug 4 is hermetically sealed, and off an inner tube 9, which is by means of tubing string hangers 7 above overflow openings 8 close to Outer tube 10 is inserted.
  • tubing string hanger 7 In the tubing string hanger 7 is another, in its length and its tube cross section variable Pipe segment 15 arranged interchangeably, with which the Flow resistance in the flood line 13 for installation a liquid column depending on the actual conditions set on site and can be regulated.
  • Cavern bore 16 Before installing the flood line 13 in the gas-filled and under the internal pressure of the cavern 19 Cavern bore 16 becomes the inner tube 9 on the tubular shoe 6 temporarily with a pullable plug 14 locked to prevent that during the Installation of gaseous storage medium on the cavern head 17 can emerge.
  • the outer tube 10 of the flood line 13 is known Way through the stuffing box one at a time Cavern head 17 mounted high pressure lock - not shown - in common pipe lengths up to depth the overflow bores 8 into the cavern bore 16 built-in. Then the inner tube 9 with the tubing string hanger 7, the inner tube 9 compared to the Seals outer tube 10, introduced into the outer tube 10. Then the further installation of the Outer tube 10 with the help of the high pressure lock to the intended depth of the tubular shoe 5 within an area that is safe against mountain formwork of the cavern roof 1.
  • the cavern bore 16 has been suspended the tube segment 15 which is variable in its dimensions installed in the outer tube 10 and tight from above the tubing string hanger 7 inserted and parked.
  • the head 28 of the pipe segment 15 is preferably included known means for connecting further Pipe segments for setting and regulating the Flow resistances for the establishment of the liquid column equipped in flood line 13.
  • throttle elements 30 can also be provided above the tubing string hanger 7 in the pipe segment 15 are to be arranged.
  • the high-pressure lock is dismantled and the cavern head 17 gas-tight with the brine pump line 23 and the gas delivery line 24 connected. After that the temporary plug 14 by known means removed from the inner tube 9.
  • the quantities of residual gas to be removed flow in counterflow 25 over the outer annular space 11 to the cavern head 17 and are equipped with a shut-off valve 18 Gas delivery line 24 of a drying plant and then the intended use fed.
  • the equipment for caverns at the cavern head an automatically closing security system equip that upon reaching security guaranteeing limit switches off.
  • the prerequisites for the use of simple safety devices for example a safety shut-off valve 21, are created, which allow the processes occurring when the cavern is flooded to be economically switched off via p max limit values and are arranged in safe areas of a cavern to be flooded above the top of the cavern can.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Pipe Accessories (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (11)

  1. Procédé de remplissage de cavernes, notamment de cavernes de gaz, se trouvant sous une pression interne minimale nécessaire d'un point de vue géomécanique, caractérisé par le fait qu'une colonne de liquide composée d'un support de remplissage est mise en place dans le trou de forage de la caverne, que la colonne de liquide est maintenue pendant toute la procédure de remplissage et que la caverne est remplie par l'intermédiaire de cette colonne de liquide, la pression interne en place de la caverne étant compensée de façon autorégulatrice à l'aide de la pression de la colonne de liquide et la caverne étant fermée automatiquement lors d'une rupture du flux de remplissage.
  2. Procédé selon la revendication 1, caractérisé par le fait que la colonne de liquide est mise en place dans un train de tubage de remplissage en ajustant les résistances à l'écoulement et que le train de tubage est installé jusque dans des zones de la caverne qui ne sont pas menacées par des décollements de la roche.
  3. Procédé selon la revendication 1 et 2, caractérisé par le fait que la colonne de liquide est une colonne hydraulique composée d'un support de remplissage et que de la saumure, de préférence complètement saturée, est employée comme support de remplissage.
  4. Procédé selon la revendication 1 à 3, caractérisé par le fait que la pression interne de la caverne est compensée à l'aide de la pression d'une colonne de liquide hydrostatique.
  5. Procédé selon la revendication 1 à 3, caractérisé par le fait que l'action de la pression de la colonne de liquide hydrodynamique est moins importante que la pression interne de la caverne.
  6. Dispositif de réalisation du procédé selon la revendication 1, caractérisé par le fait qu'un train de tubage de remplissage (13) composé d'un tube extérieur (10) présentant des trop-pleins (8) et fermé au niveau du sabot du tube (5), et d'un tube intérieur (9) est installé dans le trou de forage de la caverne (16), le tube intérieur (9) étant inséré de façon étanche dans le tube extérieur (10) au moyen d'une suspension de tubage (tubing) (7) et étant disposé de telle façon qu'il se forme, entre le tube intérieur (9) et le tube extérieur (10), un espace annulaire intérieur (12), le sens d'écoulement du support de remplissage amené par le haut étant ascendant, et un autre segment de tube (15) étant placé dans la suspension de tubage (tubing) (7) de façon interchangeable.
  7. Dispositif selon la revendication 6, caractérisé par le fait que le tube extérieur (10) est fermé par un bouchon temporaire (4) et que le tube intérieur (9) est fermé par un bouchon temporaire (14) pendant la phase d'installation.
  8. Dispositif selon la revendication 6 et 7, caractérisé par le fait que le sabot de tube (5) du tube extérieur (10) est disposé dans la zone du toit de la caverne (1) de telle façon que le débordement du support de remplissage (26) au niveau des trop-pleins (8) et le flux de gaz (25) ne s'influencent pas mutuellement.
  9. Dispositif selon la revendication 6 et 7, caractérisé par le fait que le sabot de tube (5) du tube extérieur (10) se trouve dans le trou de forage de la caverne (16).
  10. Dispositif selon la revendication 4 à 6, caractérisé par le fait que la longueur du tube intérieur (27) et la section transversale de tube du tube intérieur (9) sont déterminées par la pression interne en place dans la caverne (19) au début de la procédure de remplissage et que des moyens destinés au raccordement d'autres segments de tube sont prévus à la tête (28) du segment de tube (15).
  11. Dispositif selon la revendication 4 à 6, caractérisé par le fait que des éléments d'étranglement (30) destinés à adapter et à régler ultérieurement les résistances à l'écoulement dans le train de tubage de remplissage (13) sont prévus dans le segment de tube (15) au-dessus de la suspension de tubage (tubing) (7).
EP19970250323 1996-11-11 1997-10-30 Procédé et dispositif pour inonder des cavernes de stockage de gaz Expired - Lifetime EP0841266B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996147706 DE19647706C1 (de) 1996-11-11 1996-11-11 Verfahren und Vorrichtung zum Fluten von Speicherkavernen
DE19647706 1996-11-11

Publications (3)

Publication Number Publication Date
EP0841266A2 EP0841266A2 (fr) 1998-05-13
EP0841266A3 EP0841266A3 (fr) 1998-12-09
EP0841266B1 true EP0841266B1 (fr) 2001-02-28

Family

ID=7812048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970250323 Expired - Lifetime EP0841266B1 (fr) 1996-11-11 1997-10-30 Procédé et dispositif pour inonder des cavernes de stockage de gaz

Country Status (3)

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EP (1) EP0841266B1 (fr)
DE (1) DE19647706C1 (fr)
DK (1) DK0841266T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007046268B4 (de) * 2007-09-20 2010-07-08 Vng-Verbundnetz Gas Ag Verfahren und Einrichtung zur Befüllung und Entleerung von Kavernen
CN112824653A (zh) * 2019-11-21 2021-05-21 中国石油天然气股份有限公司 一种盐穴储气库造腔工具
CN114635671B (zh) * 2022-03-28 2023-05-02 中国石油大学(北京) 一种向盐穴回填油基岩屑的系统及方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB738917A (en) * 1952-08-23 1955-10-19 Taxaco Dev Corp Improvements in or relating to storage of fluids
US3491540A (en) * 1968-05-21 1970-01-27 Atomic Energy Commission Method of storing liquids underground
FR2586234B1 (fr) * 1985-08-13 1987-11-20 Geostock Sarl Dispositif de securite pour tube de remplissage de stockage souterrain de gaz liquefie sous pression

Also Published As

Publication number Publication date
DE19647706C1 (de) 1998-04-30
DK0841266T3 (da) 2001-06-18
EP0841266A3 (fr) 1998-12-09
EP0841266A2 (fr) 1998-05-13

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