EP0629769A2 - Procédé et dispositif pour excaver des formations salines par dissolution - Google Patents

Procédé et dispositif pour excaver des formations salines par dissolution Download PDF

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Publication number
EP0629769A2
EP0629769A2 EP94109174A EP94109174A EP0629769A2 EP 0629769 A2 EP0629769 A2 EP 0629769A2 EP 94109174 A EP94109174 A EP 94109174A EP 94109174 A EP94109174 A EP 94109174A EP 0629769 A2 EP0629769 A2 EP 0629769A2
Authority
EP
European Patent Office
Prior art keywords
tour
cavern
gas
pipe
blanket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94109174A
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German (de)
English (en)
Other versions
EP0629769B1 (fr
EP0629769A3 (fr
Inventor
Thomas Dr. Schmidt
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.)
Thyssengas GmbH
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Thyssengas GmbH
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Publication date
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Application filed by Thyssengas GmbH filed Critical Thyssengas GmbH
Publication of EP0629769A2 publication Critical patent/EP0629769A2/fr
Publication of EP0629769A3 publication Critical patent/EP0629769A3/fr
Application granted granted Critical
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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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/28—Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent

Definitions

  • the invention relates to a method and a device for brining salt caverns for the storage of natural gas.
  • the brining of caverns in the salt rock serves to create cavities for storing liquid or gaseous substances and for landfilling.
  • the creation of caverns for the storage of natural gas with a usable volume of up to 700,000 m3 is of great importance for the energy supply of municipal and industrial customers.
  • the depth and the geometric shape of the salt cavern are determined by the mountain structure as well as by a geomechanical calculation and evaluation.
  • a cavern bore with a subsequent cavern hose is first sunk through the overburden into the salt dome and secured by a cemented pipe tour reaching to the cavern roof.
  • this cemented pipe tour two concentrically interlinked rinsing pipe strings, the outer rinsing pipe tour, are installed.
  • a blanket medium is pumped in via the annular space between the outer flush pipe tour and the cemented pipe tour.
  • This blanket medium consists of mineral oil, for example light heating oil or a liquefied propane-butane mixture. Because of Due to the lower density compared to the brine, the blanket medium covers the current cavern roof during the soling process and thereby prevents soling from taking place in the preferred direction of dissolution upwards. In this way, controlled drainage is ensured in the cavern area below.
  • the rinsing pipes are removed, the underground equipment for later gas operation is installed and the gas delivery head is installed.
  • the brine that is still in the cavern after the brine has been removed must be displaced with the gas storage medium.
  • a brine extraction line is installed in the hole up to the cavern floor. The gas is injected via the annulus between the gas production tour and the brine swap line and displaces the brine via the brine swap line to the surface. After the brine displacement has ended, the brine extrusion line is pulled using a high-pressure lock. From this point on, the cavern is available for gas operation.
  • Natural gas is stored in a cavern in such a way that natural gas from the network, for example a gas pipeline, is fed to a compressor via a measuring station and an upstream separator. After compressing to cavern pressure, the next one goes Path through an operational measurement and gas field lines into the cavern bore.
  • Natural gas is withdrawn from a cavern in such a way that the natural gas reaches a relaxation control system via the gas field lines, the operational measurement and the separator, as well as preheating.
  • the natural gas is expanded from the high cavern head pressure to the generally lower gas pipeline pressure.
  • the control is followed by gas drying and another transfer measurement to register the amount of gas fed into the network.
  • the invention is based on the problem of creating a method and a device for the salting out of salt caverns for the storage of natural gas which can be carried out inexpensively.
  • the invention is based on the consideration that the later storage medium natural gas is available to the operator in unlimited quantity and at cost and can therefore be used advantageously as blanket medium. Since the natural gas is not lost when it is used as a blanket medium, a cavern can be developed in terms of sol technology by injecting natural gas, even in larger quantities, and thus causing a targeted lowering of the blanket level from top to bottom, with poorly descending deep areas of the cavern anyway Have available natural gas covered while re-brine Caverns already in gas operation are also possible in any depth.
  • an underground equipment intended for later gas operation and having a gas production tour with an above-ground gas delivery head and concentric, length-adjustable flushing pipe tours can be brought into the overburden and the brine can be carried out via the flushing pipe tours.
  • the natural gas to be stored in the isolated cavern which remains gaseous at the pressures and temperatures in the cavern, is stored in the cavern as a blanket medium with such a pressure that a preset blanket level is obtained.
  • the free ends of the inner and / or outer flushing pipe tours are shifted depending on the blanket level to be set, and the flushing pipe tours remain in the gas production tour after completion of the soling.
  • a device for the salting out of salt caverns consists of a pipe tour cemented into the overburden and the salt dome up to the cavern roof, a gas conveying tour that is sealed in it and also extends to the cavern roof, a protective liquid that fills the annular space between the pipe tours, and a variable length that is suspended in the gas conveying tour , down to the gas blanket level outer flush pipe tour and a variable length inner flush pipe hooked into the outer flush pipe tour.
  • the device according to the invention thus already consists of the underground equipment for later gas operation and the gas delivery head located above ground; in addition, it only has the outer flush pipe tour and the inner flush pipe tour in order to be able to separate the cavern.
  • An advantage of the method according to the invention and the device used therein is that the blanket medium natural gas can be removed from the partially isolated cavern for supply purposes at any time or stored in the cavern. To do this, however, the dissolving must be interrupted temporarily.
  • a drill cellar 12 is first laid on the surface after ramming a short standpipe, from which a cavern bore is sunk through the overburden 11 into a salt deposit 13 to the required level.
  • a cemented to the surface (to the surface) and in solid rock Anchor pipe tour set off from the overburden is built into the bore (standpipe and anchor pipe tour are not shown in the drawings).
  • An outer tube tour 1 is then introduced into this bore. It extends to above the roof area of the cavern to be insolated.
  • a cementation 2 carried out to the surface is responsible for the tightness of the pipe tour 1 with respect to the natural gas in the cavern.
  • a gas production tour 3 is suspended in the outer pipe tour 1 and is sealed off from the outer pipe tour 1 in the lower region by a packer 10.
  • the annular space between the outer tube tour 1 and the gas production tour 3 is filled with a protective liquid 4.
  • a pressure line 5 for natural gas as blanket medium is connected to the gas production tour 3. This pressure line 5 is connected to the above-ground system for storing and withdrawing natural gas.
  • An outer flushing tube tour 6 and an inner flushing tube tour 8 are suspended in the gas extraction tour 3; the outer flushing pipe tour 6 is connected to a pressure line 7 for fresh water in the indirect brine process and to direct brine for brine and the inner rinsing pipe tour 8 with a pressure line 9 - in the indirect brine process for brine as well as in the direct brine for fresh water.
  • the fresh water emerging from the outer flushing pipe 6 rises to the blanket level 17, flows from there downward on the wall of the cavern hose, thereby dissolving the salt of the wall and reaches the inner flushing pipe tour 8, the end of which is arranged above the respective cavern floor 16, and rises then in the inner flush pipe tour 8 to the pressure line 9, from where it is derived for industrial processing or disposal.
  • Direct soling differs from indirect brine processes in that the fresh water required for brining the cavern is introduced into the cavern through the pressure line 9 and the inner flushing pipe tour 8 and rises to the blanket level 17. The saturated brine then reaches the pressure line 7 via the annular space of the inner flushing tube tour 8 and the outer flushing tube tour 6.
  • Fig. 2 From Fig. 2 it can be seen how a cavern roof 15 develops in the desired position by adjusting the blanket mirror 17 without undesirably moving upwards.
  • a faulty solution 20 In Fig. 3, about two-thirds of the cavern is completed, resulting in a faulty solution 20.
  • This faulty solution can be eliminated in a targeted manner by lowering the blanket level 17 by injecting natural gas, as shown in FIG. 4, so that the faulty solution 20 is removed without the areas above it coming into contact with the salt.
  • the finished cavern 14 can be seen in FIG. 5; for the most part, it is still filled with brine, which is removed by pressing natural gas 18 through the inner flushing tube tour 8.

Landscapes

  • 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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
EP94109174A 1993-06-16 1994-06-15 Procédé et dispositif pour excaver des formations salines par dissolution Expired - Lifetime EP0629769B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934319941 DE4319941C3 (de) 1993-06-16 1993-06-16 Verfahren und Vorrichtung zum Aussolen von Salzkavernen
DE4319941 1993-06-16

Publications (3)

Publication Number Publication Date
EP0629769A2 true EP0629769A2 (fr) 1994-12-21
EP0629769A3 EP0629769A3 (fr) 1995-06-28
EP0629769B1 EP0629769B1 (fr) 1998-11-18

Family

ID=6490459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94109174A Expired - Lifetime EP0629769B1 (fr) 1993-06-16 1994-06-15 Procédé et dispositif pour excaver des formations salines par dissolution

Country Status (3)

Country Link
EP (1) EP0629769B1 (fr)
DE (2) DE4319941C3 (fr)
DK (1) DK0629769T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA009798B1 (ru) * 2006-11-10 2008-04-28 Открытое Акционерное Общество "Белгорхимпром" Способ поиска, разведки, исследования, оценки и прогнозирования разработки залежи калийных руд
CN102606146A (zh) * 2012-02-21 2012-07-25 重庆大学 一种模拟多夹层盐岩地质条件的造腔模型试验方法
CN103075140A (zh) * 2012-12-31 2013-05-01 陈建明 一种实现薄盐层溶蚀连通的装置及方法
WO2018114013A1 (fr) 2016-12-23 2018-06-28 Ewe Gasspeicher Gmbh Procédé pour excaver une caverne, caverne ainsi réalisée, procédé pour fabriquer un dispositif d'accumulation d'énergie et dispositif d'accumulation d'énergie ainsi fabriqué
WO2018114012A1 (fr) * 2016-12-23 2018-06-28 Ewe Gasspeicher Gmbh Dispositif et procédé pour stocker de l'énergie et utilisation d'une cavité interne

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319941C3 (de) * 1993-06-16 2002-08-08 Thyssen Gas Verfahren und Vorrichtung zum Aussolen von Salzkavernen
DE29515531U1 (de) * 1995-09-29 1995-12-21 UGS Untergrundspeicher- und Geotechnologie-Systeme GmbH, 15749 Mittenwalde Vorrichtung zur Absicherung gegen einen unzulässigen Druckaufbau
DE10130454B4 (de) * 2001-06-21 2009-05-07 Hein Gas Hamburger Gaswerke Gmbh Verfahren und Anlage zur Aufbereitung und Konditionierung von Brauchwasser und Sole
CN113338890A (zh) * 2021-06-19 2021-09-03 张铭泰 一种岩盐溶腔储能释能装置及操作方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458622A1 (de) * 1964-11-12 1969-09-18 Exxon Research Engineering Co Verfahren zur Salzgewinnung aus unterirdischen Schichten
FR2080955A1 (fr) * 1970-02-04 1971-11-26 Allied Chem
DE9312955U1 (de) * 1993-06-16 1993-10-07 Thyssengas Gmbh, 4100 Duisburg Vorrichtung zum Aussolen von Salzkavernen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458622A1 (de) * 1964-11-12 1969-09-18 Exxon Research Engineering Co Verfahren zur Salzgewinnung aus unterirdischen Schichten
FR2080955A1 (fr) * 1970-02-04 1971-11-26 Allied Chem
DE9312955U1 (de) * 1993-06-16 1993-10-07 Thyssengas Gmbh, 4100 Duisburg Vorrichtung zum Aussolen von Salzkavernen

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DIP.-ING. GOTTHARD F}RER: "Beh{lterlose Untertagespeicherung von Gas", BERGBAU, , 1983, Band 34, Nr. 9, Seiten 416 - 426 *
K. H. LUX ET AL.: "20 Jahre Erfahrung mit Salzkavernen", ERDöL, ERDGAS, KOHLE, Hamburg/Wien, 1988, Band 104, Nr. 2, Seiten 75 - 78 *
R. ARMSTRONG: "Developing Cavern Storage in Western Canada", 23. September 1986, SOLUTION MINING RESEARCH INSTITUTE, WOODSTOCK, ILLINOIS *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA009798B1 (ru) * 2006-11-10 2008-04-28 Открытое Акционерное Общество "Белгорхимпром" Способ поиска, разведки, исследования, оценки и прогнозирования разработки залежи калийных руд
CN102606146A (zh) * 2012-02-21 2012-07-25 重庆大学 一种模拟多夹层盐岩地质条件的造腔模型试验方法
CN102606146B (zh) * 2012-02-21 2014-12-10 重庆大学 一种模拟多夹层盐岩地质条件的造腔模型试验方法
CN103075140A (zh) * 2012-12-31 2013-05-01 陈建明 一种实现薄盐层溶蚀连通的装置及方法
CN103075140B (zh) * 2012-12-31 2015-06-17 陈建明 一种实现薄盐层溶蚀连通的装置及方法
WO2018114013A1 (fr) 2016-12-23 2018-06-28 Ewe Gasspeicher Gmbh Procédé pour excaver une caverne, caverne ainsi réalisée, procédé pour fabriquer un dispositif d'accumulation d'énergie et dispositif d'accumulation d'énergie ainsi fabriqué
WO2018114012A1 (fr) * 2016-12-23 2018-06-28 Ewe Gasspeicher Gmbh Dispositif et procédé pour stocker de l'énergie et utilisation d'une cavité interne

Also Published As

Publication number Publication date
DE4319941C3 (de) 2002-08-08
DE4319941C2 (de) 1995-11-23
DE4319941A1 (de) 1994-12-22
EP0629769B1 (fr) 1998-11-18
DE9312955U1 (de) 1993-10-07
EP0629769A3 (fr) 1995-06-28
DK0629769T3 (da) 1999-08-02

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