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US20020040904A1 - Bottomless spar-type oil storage tank - Google Patents

Bottomless spar-type oil storage tank Download PDF

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Publication number
US20020040904A1
US20020040904A1 US09/741,836 US74183600A US2002040904A1 US 20020040904 A1 US20020040904 A1 US 20020040904A1 US 74183600 A US74183600 A US 74183600A US 2002040904 A1 US2002040904 A1 US 2002040904A1
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US
United States
Prior art keywords
spar
oil storage
tank
bottomless
storage tank
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.)
Abandoned
Application number
US09/741,836
Inventor
Woo-Chang Lee
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.)
HD Hyundai Heavy Industries Co Ltd
Original Assignee
Hyundai Heavy Industries Co Ltd
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 Hyundai Heavy Industries Co Ltd filed Critical Hyundai Heavy Industries Co Ltd
Assigned to HYUNDAI HEAVY INDUSTRIES, CO., LTD. reassignment HYUNDAI HEAVY INDUSTRIES, CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, WOO-CHANG
Publication of US20020040904A1 publication Critical patent/US20020040904A1/en
Priority to US10/729,902 priority Critical patent/US20040112899A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/78—Large containers for use in or under water
    • 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
    • B63B2035/442—Spar-type semi-submersible structures, i.e. shaped as single slender, e.g. substantially cylindrical or trussed vertical bodies
    • 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
    • B63B2035/4486—Floating storage vessels, other than vessels for hydrocarbon production and storage, e.g. for liquid cargo

Definitions

  • the present invention relates to a bottomless spar-type oil storage tank. More specifically, the present invention relates to attached facilities provided to various marine structures such as drill ships and crude oil storage and transportation facilities.
  • FIG. 1 is a front view depicting the structure and operation of a bottomless spar-type oil storage tank according to the present invention
  • FIG. 2 is a plan view of the oil storage tank as taken along line A of FIG. 1 in case of being bottomless;
  • FIG. 3 is a plan view of the oil storage tank as taken along line A of FIG. 1 in case of having a pliable film;
  • FIG. 4 is a plan view of the oil storage tank as taken along line A of FIG. 1 in case of having an upward/downward-moving bottom;
  • FIG. 5 is a schematic view depicting the upward/downward-moving bottom.
  • the object of the present invention is to provide a bottomless spar-type oil storage tank that has no bottom, or has a pliable film or an upward/ downward-moving bottom, breaking from a conventional spar-type oil storage tank with a bottom, and is of dual-wall structure with inner and outer vessels to apply a buoyancy between two vessels and compensate for the loss of buoyancy due to its bottomless structure.
  • the present invention provides a bottomless spar-type oil storage tank including a structure of a bottomless spar, and a buoy and dual walls for solving buoyancy and ballasting problem.
  • a bottomless spar-type oil storage tank includes a structure of a bottomless spar, a buoy and dual wails for solving a buoyancy and ballasting problem, and a pliable film for preventing oil in the tank and sea water from adhering to each other.
  • a bottomless spar-type oil storage tank includes a structure of a bottomless spar, a buoy and dual walls for solving a buoyancy and ballasting problem, and an upward/ downward-moving rigid bottom for preventing oil in the tank and sea water from adhering to each other.
  • the above spar includes an inner vessel and an outer vessel which are spar-type coupled to each other, an oil storage chamber formed in the inner vessel, a permanent ballast tank provided in the lower portion between the inner and outer vessels, and permanently holding pieces of iron, orecrete, concrete, sludge, etc., a sea water ballast tank provided on a separating panel, and an air buoyancy tank provided on the tank.
  • the pliable film is made of polyester or a highly-polymerized material through which a fluid cannot pass.
  • the pliable film does not have influence on the operating performance of the tank.
  • FIGS. 2, 3 and 4 are each plan views of a bottomless oil storage tank, an oil storage tank with a pliable film, an oil storage tank having an upward/downward-moving rigid bottom, which shows a buoy attached to the bottomless spar.
  • a great wave may be generated between the water and the oil in the tank. Since this great wave may induce marine pollution, it is necessary to control the spar's water drawn and a draft of a material held in the tank through ballasting.
  • an oil storage tank installed on the seabed under a marine structure having a working tower 1 , an incinerating tower 2 , a heliport 3 , an oil separator 4 , a drilling deck 5 , a production deck 6 , and a bottom deck 7 , its inner vessel 10 and outer vessel 11 are spar-type coupled to each other.
  • An oil storage chamber 12 is formed in the inner vessel 10 , and in the lower portion between the inner and outer vessels 10 and 11 is provided a permanent ballast tank 13 in which pieces of iron, orecrete, concrete, sludge, etc. fill.
  • a seawater ballast tank 15 is provided on a separating panel 14 , and an air buoyancy tank 16 is provided on the tank 15 in such a manner that the overall tank acts as a buoy.
  • Under the permanent ballast tank 13 is provided a riser 31 through which crude oil in the seabed is conveyed to the oil storage tank.
  • the oil storage chamber 12 is bottomless.
  • the tank is connected to a submarine anchor by way of mooring lines 17 and is riding at its moorings.
  • a pliable film 20 is made of polyester or a highly-polymerized material through which a fluid cannot pass, and is secured to the inner vessel 10 by way of a hook or other simple device like a tent, the inner oil cannot flow out.
  • the pliable film 20 is light in weight, and can prevent the inner oil and water from adhering to each other and falling off.
  • a rigid bottom 30 of FIG. 4 is provided to be moved up and down. This bottom 30 automatically elevates in the inner vessel 10 by a pressure difference between the seawater and oil. The bottom 30 smoothly elevates by a rail member 32 .
  • Such an elevating mechanism employs a well-known elevator or lift member, and the detailed description about it is omitted. Since its operating system and the incoming and outgoing mechanism of the oil inside the tank are also well known, the detailed description about it is also omitted.
  • the rigid bottom 30 is automatically moved to a position to which the smallest force is applied by the pressure difference between the surrounding seawater and oil held in the tank, without any power plant. Therefore, the force generated by waves is not transferred to the oil storage tank.
  • the inventive oil storage tank can enhance the operating performance and reduce the costs for keeping and repairing, without damage to the function of the original spar by removing its bottom.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)

Abstract

An oil storage tank installed on the seabed under a marine structure with a working tower, an incinerating tower, a heliport, an oil separator, a drilling deck, a production deck, and a bottom deck, including a inner vessel and an outer vessel which are spar-type coupled to each other, an oil storage chamber formed in the inner vessel, a permanent ballast tank provided in the lower portion between the inner and outer vessels, and permanently holding pieces of iron, orecrete, concrete, sludge, etc., a sea water ballast tank provided on a separating panel, and an air buoyancy tank provided on the tank in such a manner that the overall tank acts as a buoy and the oil storage chamber is bottomless.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0001]
  • The present invention relates to a bottomless spar-type oil storage tank. More specifically, the present invention relates to attached facilities provided to various marine structures such as drill ships and crude oil storage and transportation facilities. [0002]
  • 2. Description of the Related Art [0003]
  • Conventionally, a spar-type tank with a bottom is used as an oil storage tank for a marine structure. The big load of this conventional oil storage tank with the bottom is problematic. In addition, much efforts and expenses are required to repair and keep its bottom. That is because there is a difference in buoyancy according to the amount of oil filling in the tank having the fixed bottom, and an extra buoyancy control system is not included in the tank. Moreover, a person must enter the tank in the seabed far from the land in order to clean and repair its bottom, which is very difficult and dangerous.[0004]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the invention, and, together with the description, serve to explain the principles of the invention: [0005]
  • FIG. 1 is a front view depicting the structure and operation of a bottomless spar-type oil storage tank according to the present invention; [0006]
  • FIG. 2 is a plan view of the oil storage tank as taken along line A of FIG. 1 in case of being bottomless; [0007]
  • FIG. 3 is a plan view of the oil storage tank as taken along line A of FIG. 1 in case of having a pliable film; [0008]
  • FIG. 4 is a plan view of the oil storage tank as taken along line A of FIG. 1 in case of having an upward/downward-moving bottom; and [0009]
  • FIG. 5 is a schematic view depicting the upward/downward-moving bottom.[0010]
    • SUMMARY OF THE INVENTION
  • The object of the present invention is to provide a bottomless spar-type oil storage tank that has no bottom, or has a pliable film or an upward/ downward-moving bottom, breaking from a conventional spar-type oil storage tank with a bottom, and is of dual-wall structure with inner and outer vessels to apply a buoyancy between two vessels and compensate for the loss of buoyancy due to its bottomless structure. [0011]
  • In order to achieve the above object, the present invention provides a bottomless spar-type oil storage tank including a structure of a bottomless spar, and a buoy and dual walls for solving buoyancy and ballasting problem. [0012]
  • According to another aspect of the present invention, a bottomless spar-type oil storage tank includes a structure of a bottomless spar, a buoy and dual wails for solving a buoyancy and ballasting problem, and a pliable film for preventing oil in the tank and sea water from adhering to each other. According to still another aspect of the present invention, a bottomless spar-type oil storage tank includes a structure of a bottomless spar, a buoy and dual walls for solving a buoyancy and ballasting problem, and an upward/ downward-moving rigid bottom for preventing oil in the tank and sea water from adhering to each other. [0013]
  • The above spar includes an inner vessel and an outer vessel which are spar-type coupled to each other, an oil storage chamber formed in the inner vessel, a permanent ballast tank provided in the lower portion between the inner and outer vessels, and permanently holding pieces of iron, orecrete, concrete, sludge, etc., a sea water ballast tank provided on a separating panel, and an air buoyancy tank provided on the tank. [0014]
  • The pliable film is made of polyester or a highly-polymerized material through which a fluid cannot pass. The pliable film does not have influence on the operating performance of the tank. [0015]
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • In the following detailed description, only the preferred embodiment of the invention has been shown and described, simply by way of illustrating the best mode contemplated by the inventor(s) of carrying out the invention. As will be realized, the invention is capable of modification in various obvious respects, all without departing from the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not restrictive. [0016]
  • Referring to FIG. 1, the inventive oil storage tank is of dual-wall structure to compensate for the loss of buoyancy due to its bottomless structure, thus solving the ballasting and buoyancy problems. FIGS. 2, 3 and [0017] 4 are each plan views of a bottomless oil storage tank, an oil storage tank with a pliable film, an oil storage tank having an upward/downward-moving rigid bottom, which shows a buoy attached to the bottomless spar. When certain waves are introduced to the tank, a great wave may be generated between the water and the oil in the tank. Since this great wave may induce marine pollution, it is necessary to control the spar's water drawn and a draft of a material held in the tank through ballasting.
  • In an oil storage tank installed on the seabed under a marine structure having a [0018] working tower 1, an incinerating tower 2, a heliport 3, an oil separator 4, a drilling deck 5, a production deck 6, and a bottom deck 7, its inner vessel 10 and outer vessel 11 are spar-type coupled to each other. An oil storage chamber 12 is formed in the inner vessel 10, and in the lower portion between the inner and outer vessels 10 and 11 is provided a permanent ballast tank 13 in which pieces of iron, orecrete, concrete, sludge, etc. fill. A seawater ballast tank 15 is provided on a separating panel 14, and an air buoyancy tank 16 is provided on the tank 15 in such a manner that the overall tank acts as a buoy. Under the permanent ballast tank 13 is provided a riser 31 through which crude oil in the seabed is conveyed to the oil storage tank. The oil storage chamber 12 is bottomless. The tank is connected to a submarine anchor by way of mooring lines 17 and is riding at its moorings.
  • When certain waves are introduced to the inventive oil storage tank, great waves may be generated between water and the oil in the tank. The generation of great waves that may cause marine pollution, can be compensated by controlling the spar's water drawn and a draft of a material held in the tank through ballasting. [0019]
  • As depicted in FIG. 3, since a [0020] pliable film 20 is made of polyester or a highly-polymerized material through which a fluid cannot pass, and is secured to the inner vessel 10 by way of a hook or other simple device like a tent, the inner oil cannot flow out. The pliable film 20 is light in weight, and can prevent the inner oil and water from adhering to each other and falling off. A rigid bottom 30 of FIG. 4 is provided to be moved up and down. This bottom 30 automatically elevates in the inner vessel 10 by a pressure difference between the seawater and oil. The bottom 30 smoothly elevates by a rail member 32.
  • Such an elevating mechanism employs a well-known elevator or lift member, and the detailed description about it is omitted. Since its operating system and the incoming and outgoing mechanism of the oil inside the tank are also well known, the detailed description about it is also omitted. [0021]
  • The [0022] rigid bottom 30 is automatically moved to a position to which the smallest force is applied by the pressure difference between the surrounding seawater and oil held in the tank, without any power plant. Therefore, the force generated by waves is not transferred to the oil storage tank.
  • As described above, the inventive oil storage tank can enhance the operating performance and reduce the costs for keeping and repairing, without damage to the function of the original spar by removing its bottom. [0023]
  • While this invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. [0024]

Claims (4)

What is claimed is:
1. A bottomless spar-type oil storage tank comprising a structure of a bottomless spar, and a buoy and dual walls for solving buoyancy and ballasting problem.
2. A bottomless spar-type oil storage tank comprising a structure of a bottomless spar, a buoy and dual walls for solving a buoyancy and ballasting problem, and a pliable film for preventing oil in the tank and sea water from adhering to each other.
3. A bottomless spar-type oil storage tank comprising a structure of a bottomless spar, a buoy and dual walls for solving a buoyancy and ballasting problem, and an upward/downward-moving rigid bottom for preventing oil in the tank and sea water from adhering to each other.
4. A bottomless spar-type oil storage tank according to claims 1 to 3, wherein the spar includes:
an inner vessel and an outer vessel spar-type coupled to each other;
an oil storage chamber formed in the inner vessel;
a permanent ballast tank provided in the lower portion between the inner and outer vessels, and permanently holding pieces of iron, orecrete, concrete, sludge, etc.;
a sea water ballast tank provided on a separating panel; and
an air buoyancy tank provided on the tank.
US09/741,836 2000-10-11 2000-12-22 Bottomless spar-type oil storage tank Abandoned US20020040904A1 (en)

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KR1020000059704A KR20020028606A (en) 2000-10-11 2000-10-11 Bottomless spar-type Oil Storage Tank

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080080935A1 (en) * 2004-08-02 2008-04-03 Peter John Tangney Submarine Water Reservior
US20100051624A1 (en) * 2008-08-29 2010-03-04 Horton Deepwater Development Systems, Inc. Floating Oil Storage System and Method
CN102052064A (en) * 2009-10-30 2011-05-11 中国海洋石油总公司 Underwater oil storage mat of production platform
CN102431628A (en) * 2011-10-17 2012-05-02 上海交通大学 Time-sharing loading system for loading cabins of hard cabin of column-type platform
CN102491020A (en) * 2011-12-27 2012-06-13 浙江大学舟山海洋研究中心 Novel barrel type oil storage device
CN102493698A (en) * 2011-12-27 2012-06-13 浙江大学舟山海洋研究中心 Novel sink type oil storage device
CN102582971A (en) * 2011-12-13 2012-07-18 浙江大学舟山海洋研究中心 Novel floating type oil storage unit
CN103374905A (en) * 2012-04-27 2013-10-30 中国海洋石油总公司 Movable self-installation platform
CN103912245A (en) * 2012-08-07 2014-07-09 中国海洋石油总公司 Deepwater drilling production vertical oil storage platform and operating method thereof
US20150041142A1 (en) * 2012-08-07 2015-02-12 Jin Wang Vertical Oil Storage System and Its Method For Deepwater Drilling and Production
CN105151579A (en) * 2015-08-28 2015-12-16 湖北海洋工程装备研究院有限公司 Oil-water displacement type oil storage tank
CN107060449A (en) * 2017-05-16 2017-08-18 佛山科学技术学院 A kind of concrete tube tube-in-tube structure oil storage tank
CN108045517A (en) * 2017-12-07 2018-05-18 上海外高桥造船有限公司 The oil storage method of SPAR platforms

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
KR100545828B1 (en) * 2001-06-05 2006-01-24 현대중공업 주식회사 Spare Structure Expands Crude Storage
KR100468889B1 (en) * 2001-07-19 2005-01-29 김건수 A marine oil station
US20060251477A1 (en) * 2005-05-03 2006-11-09 Brower Gordon R Contained oil production facility

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US3435793A (en) * 1967-04-11 1969-04-01 Wood B Shurtleff Portable submarine tanks
US3921558A (en) * 1974-09-16 1975-11-25 Vickers Ltd Floatable vessel
US4759307A (en) * 1987-04-09 1988-07-26 Sun Transport, Inc. Tanker ballast
US5524549A (en) * 1993-12-16 1996-06-11 Morris; Richard D. Artificial floating island

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080080935A1 (en) * 2004-08-02 2008-04-03 Peter John Tangney Submarine Water Reservior
US7736093B2 (en) 2004-08-02 2010-06-15 Peter John Tangney Submarine water reservoir
US20100290837A1 (en) * 2004-08-02 2010-11-18 Peter John Tangney Submarine water reservoir
US20100051624A1 (en) * 2008-08-29 2010-03-04 Horton Deepwater Development Systems, Inc. Floating Oil Storage System and Method
WO2010025361A3 (en) * 2008-08-29 2010-06-10 Horton Deepwater Development Systems, Inc. Floating oil storage system and method
CN102137788A (en) * 2008-08-29 2011-07-27 霍顿维森深水公司 Floating oil storage system and method
US8011312B2 (en) 2008-08-29 2011-09-06 Horton Wison Deepwater, Inc. Floating oil storage system and method
CN102052064A (en) * 2009-10-30 2011-05-11 中国海洋石油总公司 Underwater oil storage mat of production platform
CN102431628A (en) * 2011-10-17 2012-05-02 上海交通大学 Time-sharing loading system for loading cabins of hard cabin of column-type platform
CN102582971A (en) * 2011-12-13 2012-07-18 浙江大学舟山海洋研究中心 Novel floating type oil storage unit
CN102491020A (en) * 2011-12-27 2012-06-13 浙江大学舟山海洋研究中心 Novel barrel type oil storage device
CN102493698A (en) * 2011-12-27 2012-06-13 浙江大学舟山海洋研究中心 Novel sink type oil storage device
CN103374905A (en) * 2012-04-27 2013-10-30 中国海洋石油总公司 Movable self-installation platform
CN103912245A (en) * 2012-08-07 2014-07-09 中国海洋石油总公司 Deepwater drilling production vertical oil storage platform and operating method thereof
US20150041142A1 (en) * 2012-08-07 2015-02-12 Jin Wang Vertical Oil Storage System and Its Method For Deepwater Drilling and Production
US9327805B2 (en) * 2012-08-07 2016-05-03 China National Offshore Oil Corporation Vertical oil storage system and its method for deepwater drilling and production
CN105151579A (en) * 2015-08-28 2015-12-16 湖北海洋工程装备研究院有限公司 Oil-water displacement type oil storage tank
CN107060449A (en) * 2017-05-16 2017-08-18 佛山科学技术学院 A kind of concrete tube tube-in-tube structure oil storage tank
CN108045517A (en) * 2017-12-07 2018-05-18 上海外高桥造船有限公司 The oil storage method of SPAR platforms

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US20040112899A1 (en) 2004-06-17
KR20020028606A (en) 2002-04-17

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Owner name: HYUNDAI HEAVY INDUSTRIES, CO., LTD., KOREA, REPUBL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, WOO-CHANG;REEL/FRAME:011393/0440

Effective date: 20001204

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION