DE2732911A1 - Offshore tank installation for liquefied gas - with semi:submersible platform for spherical tank and supply shaft - Google Patents

Offshore tank installation for liquefied gas - with semi:submersible platform for spherical tank and supply shaft

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Publication number
DE2732911A1
DE2732911A1 DE19772732911 DE2732911A DE2732911A1 DE 2732911 A1 DE2732911 A1 DE 2732911A1 DE 19772732911 DE19772732911 DE 19772732911 DE 2732911 A DE2732911 A DE 2732911A DE 2732911 A1 DE2732911 A1 DE 2732911A1
Authority
DE
Germany
Prior art keywords
tank
tank system
natural gas
semi
spherical storage
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
DE19772732911
Other languages
German (de)
Other versions
DE2732911B2 (en
DE2732911C3 (en
Inventor
Heinz Gerhard Butt
Juergen Dipl Ing Salewski
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.)
Bilfinger SE
Original Assignee
Bilfinger und Berger Bau 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 Bilfinger und Berger Bau AG filed Critical Bilfinger und Berger Bau AG
Priority to DE2732911A priority Critical patent/DE2732911C3/en
Publication of DE2732911A1 publication Critical patent/DE2732911A1/en
Publication of DE2732911B2 publication Critical patent/DE2732911B2/en
Application granted granted Critical
Publication of DE2732911C3 publication Critical patent/DE2732911C3/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/005—Underground or underwater containers or vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B1/047—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull with spherical hull or hull in the shape of a vertical ring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B2001/044—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull with a small waterline area compared to total displacement, e.g. of semi-submersible type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0118—Offshore
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0118—Offshore
    • F17C2270/0121—Platforms

Abstract

A tank installation to store liquefied natural gas in offshore regions consists of a semi-submersible structure with a multi-cell platform, which can be floated or ballasted, carrying a spherical storage tank. This can be held at a certain depth by ballasting and anchoring and is equipped with a double-walled supply and inspection shaft which extends to above water level where it carries a deck for a helicopter pad, for supply and loading facilities, and for the mooring of tankers. This plant can be easily moved to another site. All parts are of simple design which can be easily calculated and made. The spherical storage tank has the ideal resistance against the external water pressure and has a good volume-to-surface ratio.

Description

Tankanlage zur Lagerung von verflüssigtem Erdgas Tank system for the storage of liquefied natural gas

im Offshore-Bereich Die Erfindung betrifft eine Tankanlage zur Lagerung von verflüssigtem Erdgas im Offshore-Bereich. in the offshore sector The invention relates to a tank system for storage of liquefied natural gas in the offshore sector.

Tankanlagen werden bisher vielfach in die Fundamente von auf dem Meeresboden gegründeten Offshore-Förder- und Produktionsanlagen einbezogen. Eine von der Produktionsplattform entfernt angeordnete Tankanlage zur lagerung von Rohöl ist aus der DT-OS 231 666 7 bekannt. Diese Tankanlage wird von der Produktionsanlage entfernt eingeschwommen und durch Ballastierung der Lager- und Ballasträume mit Seewasser bis auf den Nleeresgrund abgesenkt. Beim Einfüllen von Rohöl wird das Ballastwasser aus den Lagertanks wieder verdrängt und in die See zurück gefördert.So far, tank systems are often built into the foundations of on the seabed established offshore extraction and production facilities are included. One from the production platform Remote tank system for storing crude oil is from DT-OS 231 666 7 known. This tank system is floated in away from the production system and by ballasting the storage and ballast rooms with seawater down to the empty bottom lowered. When the crude oil is filled in, the ballast water from the storage tanks is restored displaced and pushed back into the sea.

Die US-PS 3.519.034 beschreibt eine auf dem Meeresgrund verankerte Tankanlage zur Lagerung von Rohöl mit einem nach unten offenen Lagerbehälter. Das darin gelagerte Rohöl schwimmt auf dem je nach Füllungsgrad in den unten offenen Tank hineinragenden Seewasserspiegel.US-PS 3,519,034 describes one anchored on the ocean floor Tank system for the storage of crude oil with a storage container that is open at the bottom. That The crude oil stored in it floats in the open at the bottom, depending on the degree of filling Tank protruding into the sea water level.

Solche lankanlagen, in denen das zu lagernde Rohöl und das zur Ballastierung erforderliche Seewasser gemeinsam in den selben Lagerbehältern gelagert wird, eignen sich nicht zur Lagerung von verflüssigtem Erdgas. Das in flüssigem Zustand sehr kalte Erdgas würde das mit ihm in Berührung stehende Ballastwasser gefrieren lassen. Es wurde schon vorgeschlagen, eine Erdgasverflüssigungsanlage als Halbtaucher auszubilden, deren eingetauchte Beine zu Lagerbehältern ausgebildet sind, die auf dem eingetauchten, als Ballasttank dienenden Plattformfundament aufstehen und auf ihrem oberen munde über der Wasseroberfläche das Produktionsdeck tragen. Die Zusammenfassung von Erdgasverflüssigungsanlage und Tankanlage erbringt hierbei ein erhöhtes Risiko, da ein Unfall wegen der hohen Konzentration brennbaren Materials leicht zu einer Katastrophe fuhren kann.Such lanking systems in which the crude oil to be stored and that for ballasting required seawater is stored together in the same storage containers not to store liquefied natural gas. That in a very liquid state cold natural gas would freeze the ballast water in contact with it. It has already been proposed to train a natural gas liquefaction plant as a semi-submersible, whose submerged legs are formed into storage containers that are placed on the submerged, as Stand up on the platform foundation and place on your upper mouth over the ballast tank the surface of the water carry the production deck. The summary of natural gas liquefaction plant and tank system entails an increased risk, as an accident because of the high Concentration of combustible material can easily lead to disaster.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine separate Tankanlage zur Lagerung von verflüssigtem Erdgas unter der Wasseroberfläche zu schaffen.The present invention is therefore based on the object of a separate tank system for storing liquefied natural gas under the water surface to accomplish.

Die Aufgabe wird dadurch gelöst, daß ein schwimmfähiges Halbtauchersystem bestehend aus einer ballastierbaren Zellwandplattform, auf der ein kugelförmiger Lagerbehälter und um diesen herum eine Vielzahl ballastierbarer, zylinderförmiger Schwimmbehälter aufgebaut sind, durch Ballastierung und/oder Grundverankerung unter Wasser festlegbar ist und daß ein auf der Zellwandplattform aufstehender, doppelwandiger Förder- und Inspektionsschacht, der durch den kugelförmigen Lagerbehälter hindurch bis über die Wasseroberfläche hinausragt, an seinem oberen Ende Verlade- und Versorgungseinrichtungen, einen Hubschrauberlandeplatz sowie Vorrichtungen zum Festmachen von Schiffen trägt.The object is achieved in that a buoyant semi-submersible system consisting of a ballastable cell wall platform on which a spherical Storage containers and around them a large number of ballastable, cylindrical Floating tanks are built up by ballasting and / or anchoring under Water can be fixed and that a double-walled one standing on the cell wall platform Conveyor and inspection shaft that passes through the spherical storage container protrudes above the surface of the water, at its upper end loading and supply facilities, carries a helipad and devices for mooring ships.

Dabei ist es von Vorteil, daß die Tankanlage aus Stahlbeton und/oder Spannbeton und/oder Stahl besteht.It is advantageous that the tank system made of reinforced concrete and / or Prestressed concrete and / or steel is made.

Es ist zweckmäßig und von Vorteil, daß der kugelförmige Lagerbehälter mit doppelwandigen, radial und senkrecht verlaufenden Schottwänden in mehrere gleich große Sektoren unterteilt ist.It is expedient and advantageous that the spherical storage container with double-walled, radial and vertical bulkheads in several identical large sectors is divided.

Ferner ist es von Vorteil, daß die Abgas-, Füll- und Entnahmeleitungen für verflüssigtes Erdgas zwischen den beiden Wänden des i'örder- und Inspektionsschachtes und die Pumpenleitungen für das Ballastwasser innerhalb der inneren Wand dieses Schachts liegen.It is also advantageous that the exhaust, filling and extraction lines for liquefied natural gas between the two walls of the delivery and inspection shaft and the pump lines for the ballast water within the inner wall thereof Schachts lie.

Der Gegenstand der Erfindung ist in der Zeichnung beispielsweise dargestellt und nachstehend beschrieben. Es zeigen: Fig. 1 eine Seitenansicht der erfindungsgemäßen Tankanlage im aufgeschwommenen Transportzustand, Fig. ; eine Seitenansicht der Tankanlage im getauchten Zustand, Fig. 3 einen Teilschnitt durch die Tankanlage.The object of the invention is shown in the drawing, for example and described below. 1 shows a side view of the inventive Tank system in the floated transport state, Fig.; a side view of the tank system in the submerged state, FIG. 3 shows a partial section through the tank system.

Wie aus Fig. 1 ersichtlich, besteht die Tankanlage aus einer vielzelligen Plattform 1 mit den ballastierbaren Zellen Der kugelförmige Lagerbehälter 3 mit innenliegender Isolierung nimmt das verflüssigte Gas auf.As can be seen from Fig. 1, the tank system consists of a multicellular one Platform 1 with the ballastable cells The spherical storage container 3 with internal insulation absorbs the liquefied gas.

Die um den kugelförmigen Lagerbehälter 3 herum auf der Zellwandplattform 1 aufgestellten Schwimmbehälter 4 sind ballastierbar.The ones around the spherical storage container 3 on the cell wall platform 1 erected floating tanks 4 can be ballasted.

Wie in Fig. 1 dargestellt, kann die Tankanlage mit leeren Schwimmbehältern in aufgeschwommenem Zustand transportiert werden.As shown in Fig. 1, the tank system with empty floating tanks be transported in a floated state.

Illit Fig. 2 ist dargestellt, wie die durch Ballastieren der Schwimmbehälter 4 mit Seewasser und loser Fesselung 5 an Grundanker positionierte Tankanlage unter Wasser gehalten wird.Illit Fig. 2 is shown how that by ballasting the floating container 4 with seawater and loose restraint 5 tank system positioned on ground anchor below Water is held.

Dabei wird die enge des Ballastwassers entsprechend der åeweiligen Füllung des Lagerbehälters 3 ständig derart verändert, daß ein gleich großer Überschußauftrieb erhalten bleibt. Der über die Wasseroberfläche hinausragende Förder- und Inspektionsschacht 6 und die darauf aufgebauten Verlade- und Versorgungseinrichtungen bieten Wind und Wellen nur wenig Angriffsfläche, so daß die gesamte Tankanlage, die in einer Wassertiefe außerhalb des Einflußbereichs der Oberflächenwellen tiefgetaucht ist, sehr ruhig liegen bleibt.The tightness of the ballast water is determined by the respective Filling of the storage container 3 is constantly changing in such a way that an equally large excess buoyancy preserved. The delivery and inspection shaft protruding above the water surface 6 and the loading and supply facilities built on it offer wind and Waves only little contact surface, so that the entire tank system, which is in a water depth is deeply immersed outside the area of influence of the surface waves, very calmly remains lying.

Die erfinäun0sgemäße Tankanlage erbringt den Vorteil, daß sie in aufgeschwommenem Zustand leicht verholt werden kann. Lagertank, Schwimmbehälter, Plattform und Schacht haben einfache geometrische Formen, die leicht herzustellen und zu berechnen sind. Der kugelförmige Lagerbehälter ist gegen den besonders bei leerem Behälter von außen auf ihn einwirkenden Wasserdruck sehr widerstandsfähig und umfaßt aufgrund seiner Kugelform bei kleinster Oberfläche das größtmögliche Volumen.The tank system according to the invention has the advantage that it is floated in State can be easily shifted. Storage tank, float tank, platform and shaft have simple geometric shapes that are easy to make and calculate. The spherical storage container is against the outside especially when the container is empty water pressure acting on him is very resistant and includes due to his Spherical shape with the smallest surface the largest possible volume.

Claims (4)

Patentansprüche I1.'Tankanlage zur Lagerung von verflüssigtem Erdgas im Offshore-Bereich, d a d u r c h g e k e n n z e i c h n e t daß ein schwimmfähiges Halbtauchersystem, bestehend aus einer ballastierbaren Zellwandplattform (1), auf der ein kugelförmiger Lagerbehälter (3) und um diesen herum eine Vielzahl ballastierbarer, zylinderförmiger Schwimmbehälter (4) aufgebaut sind, durch Ballastierung und/oder Grundverankerung unter Wasser festlegbar ist und daß ein auf der Zellwandplattform (1) aufstehender, doppelwandiger Förder- und Inspektionsschacht (6), der durch den kugelförmigen Lagerbehält er (3) hindurch bis über die Wasseroberfläche hinausragt, an seinem oberen Ende Verlade- und Versorgungseinrichtungen, einen Hubschrauberlandeplatz sowie Vorrichtungen zum Festmachen von Schiffen trägt.Claims I1.'Tank system for the storage of liquefied natural gas In the offshore area, it is not possible to say that a buoyant Semi-submersible system, consisting of a ballastable cell wall platform (1) which has a spherical storage container (3) and around it a large number of ballastable, cylindrical floating tank (4) are constructed by ballasting and / or Basic anchorage under water can be fixed and that one on the cell wall platform (1) upright, double-walled conveyor and inspection shaft (6), which runs through the spherical storage container (3) protrudes above the water surface, at its upper end loading and supply facilities, a helipad as well as devices for mooring ships. 2. Tankanlage nach Anspruch 1, d a d u r c h g e k e n n -z e i c h n e t , daß die Tankanlage aus Stahlbeton und/ oder Spannbeton und/oder Stahl besteht.2. Tank system according to claim 1, d a d u r c h g e k e n n -z e i c Not that the tank system is made of reinforced concrete and / or prestressed concrete and / or steel consists. 3. Tankanlage nach Anspruch 1 und 2, d a d u r c h g e -k e n n z e i c h n e t , daß der kugelförmige Lagerbehälter (3) mit doppelwandigen, radial und senkrecht verlaufenden Schottwänden in mehrere gleich große Sektoren unterteilt ist.3. Tank system according to claim 1 and 2, d a d u r c h g e -k e n n z e i c h n e t that the spherical storage container (3) with double-walled, radial and vertical bulkheads divided into several equally sized sectors is. 4. Tankanlage nach Anspruch 1, 2 und 3, d a d u r c h g e -k e n n z e i c h n e t , daß die Abgas-, Füll- und Entnahmeleitungen für verflüssigtes Erdgas zwischen den beiden Wänden des Förder- und Inspektionsschachtes (6) und die Pumpenleitungen für das Ballastwasser innerhalb der inneren Wand dieses Schachtes (6) liegen.4. Tank system according to claim 1, 2 and 3, d a d u r c h g e -k e n n z e i c h n e t that the exhaust, filling and extraction lines for liquefied Natural gas between the two walls of the conveyor and inspection shaft (6) and the Pump lines for the ballast water inside the inner wall of this manhole (6) lie.
DE2732911A 1977-07-21 1977-07-21 Tank system for the storage of liquefied natural gas on the high seas Expired DE2732911C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2732911A DE2732911C3 (en) 1977-07-21 1977-07-21 Tank system for the storage of liquefied natural gas on the high seas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2732911A DE2732911C3 (en) 1977-07-21 1977-07-21 Tank system for the storage of liquefied natural gas on the high seas

Publications (3)

Publication Number Publication Date
DE2732911A1 true DE2732911A1 (en) 1979-02-01
DE2732911B2 DE2732911B2 (en) 1979-08-16
DE2732911C3 DE2732911C3 (en) 1980-04-30

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DE2732911A Expired DE2732911C3 (en) 1977-07-21 1977-07-21 Tank system for the storage of liquefied natural gas on the high seas

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DE (1) DE2732911C3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005045304A1 (en) * 2003-10-29 2005-05-19 Shell Internationale Research Maatschappij B.V Liquefied natural gas storage structure having foundations extending into a bottom of a body of water
WO2010041229A3 (en) * 2008-10-09 2010-12-16 Acergy France Sa Buoyancy device for marine structures
CN103434618A (en) * 2013-09-03 2013-12-11 傅元韬 Mirage floating building

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005045304A1 (en) * 2003-10-29 2005-05-19 Shell Internationale Research Maatschappij B.V Liquefied natural gas storage structure having foundations extending into a bottom of a body of water
WO2010041229A3 (en) * 2008-10-09 2010-12-16 Acergy France Sa Buoyancy device for marine structures
CN103434618A (en) * 2013-09-03 2013-12-11 傅元韬 Mirage floating building
CN103434618B (en) * 2013-09-03 2016-06-22 傅元韬 Mirage floating building

Also Published As

Publication number Publication date
DE2732911B2 (en) 1979-08-16
DE2732911C3 (en) 1980-04-30

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