WO2002030738A1 - Systeme de stockage flottant - Google Patents

Systeme de stockage flottant Download PDF

Info

Publication number
WO2002030738A1
WO2002030738A1 PCT/NO2001/000408 NO0100408W WO0230738A1 WO 2002030738 A1 WO2002030738 A1 WO 2002030738A1 NO 0100408 W NO0100408 W NO 0100408W WO 0230738 A1 WO0230738 A1 WO 0230738A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage
floating
tank
storage system
oil
Prior art date
Application number
PCT/NO2001/000408
Other languages
English (en)
Inventor
Arnstein Godejord
Trond LANDBÖ
Kåre O. HÆREID
Original Assignee
Dr. Techn. Olav Olsen As
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 Dr. Techn. Olav Olsen As filed Critical Dr. Techn. Olav Olsen As
Priority to AU2001294427A priority Critical patent/AU2001294427A1/en
Publication of WO2002030738A1 publication Critical patent/WO2002030738A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • 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
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
    • 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

Definitions

  • the present invention relates to a floating storage system for hydrocar- bons, primarily for use in a floating production platform with requirements for constant draught.
  • the invention describes a storage system for oil or condensate for use in a floating production platform with surface wells and rigid risers. Independent of the amount of hydrocarbons in the storage the platform has a constant draught without any active ballasting.
  • the system has a potential for significant cost savings compared to traditional systems, both in fabrication cost and in operation cost.
  • wet storage For fixed platforms, in the North Sea and in other parts of the world, an alternative system has been used with hydrocarbons stored on top of seawater (wet storage) and the difference in density causes separation of hydrocarbons from the water, and the hydrocarbons will float to the top of the storage.
  • This sys- tern can also be used in floating platforms.
  • Such wet storage requires less ballasting to keep constant draught due to the fact that only the difference in density between water and hydrocarbons (typically 0,15-0,25 t/m 3 ) needs to be compensated for. It is also one alternative to allow for change in draught. Without ballasting the changes in draught for a wet storage will be significantly reduced com- pared to a dry storage.
  • GB 2.071.020 describes a structure designed for oil and gas recovery, and has no direct ventilation in the top, but a complex system of valves and pipes for delivering a mixture of oil and gas to a storage vessel. The draught of the latter will depend on the gas pressure inside the structure. The two structures are not designed for permanent storage of hydrocarbons due to the danger of pollution through the open base.
  • the present invention utilise some of the same principles as the two inventions described above since it communicates to sea in the bottom and is venti- lated in the top.
  • these structures are intended for completely different objects than the present invention, and this structures cannot be utilized in a floating production platform including oil storage and with the requirement to constant draft due to the use of rigid rises and well heads on the platform.
  • One object of the present invention is to provide a storage system that will not affect the draught of the storage platform when the amount of hydrocarbons in the storage changes. This will eliminate the need for an active ballast system even for platforms with surface wells and rigid risers, and will simplify operation of the platform.
  • Another object is to provide a safe storage system that eliminates the risk of leakage.
  • a floating storage system for oil and condensate primarily for use in a floating production platform with requirements for constant draught, characterised in that the storage system consisting of a floating structure having one or more buoyancy tanks and one or more storage tanks, with the buoyancy tank designed to carry the floating structure in a predefined constant draught, and the storage tank is equipped with a ventilation system in the top and communicates with outer sea through pipes in the bottom, pressing air out of the top and pressing seawater out of the bottom when filling oil or condensate into the storage tank.
  • Figure 1 presents the storage structure filled with oil
  • Figure 2 presents the storage structure half full of oil
  • Figure 3 presents an empty storage structure.
  • a storage system is presented floating at a predefined draught, filled with oil.
  • the structure 1 has buoyancy tank(s) 2 creating an outer barrier encircling the storage tank(s) 3.
  • the buoyancy tank(s) (2) carry the structure at a constant draught.
  • the storage tank(s) 3 has ventilation system 4 in the top and communicates to sea 5 in the bottom.
  • the communication to sea 5 goes through a buffer tank 6, from the bottom of the storage tank to the top of the buffer tank 6. It is possible to connect a number of buffer tanks in series to improve safety against pollution.
  • the buffer tank 6 is connected to outer sea through openings 7 in the bottom.
  • the communication of the storage tank(s) 3 to sea via the buffer tank 6 eliminates the risk of leakage from the storage 3 and pollution to the outer sea.
  • the ventilation system 4 in the top of the storage tank allows ventilation to atmosphere, and Nitrogen will be purged into the gas at the top of the storage to prevent explosions.
  • the storage 3 is full of oil stored on top of water, and with air in top. The surface level of oil will in this case be higher than the surface level of outer seawater.
  • the storage 3 is half full of oil stored on top of water.
  • the surface level of the oil is lower than in figure 1 , but still above outer seawater.
  • the storage 3 is "empty", i.e. has no oil inside.
  • the surface level of the water inside the storage 3 is equal to the surface level of the outer seawater.
  • Figures 1-3 illustrate how the storage platform maintains a constant draught independent of the amount of oil in the storage, and without any active ballasting.
  • the storage system is designed so that the seawater carries the weight of the oil, and the platform structure is carried by the buoyancy tank(s).
  • the storage acts as it is open in the bottom, but the base slab and the communication through the buffer tank(s) eliminates the risk of pollution.
  • the storage system can have different configurations, but the principle is the same for any configuration. Due to the fact that the weight of the oil is not carried by the floating structure the resulting vertical pressures on all parts of the storage structure must be zero.
  • the simplest shape of such a storage system has one or more storage tanks with constant area over the entire height, and with buoyancy tanks placed around the storage tanks. Some of the buoyancy tanks need to penetrate the sea surface to provide intact and damage stability and optimal hydrodynamic motion characteristics.
  • the storage system can also be used for alternative configurations with extensive submerged volume to improve motion characteristics. If storage tanks are located at different elevations the areas of the tanks need to calibrated to minimise the draught variations due to amount of oil in storage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Earth Drilling (AREA)
  • Removal Of Floating Material (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention concerne un système de stockage flottant pour pétrole et condensat, convenant principalement pour une plate-forme de production flottante qui nécessite un système présentant un tirant d'eau constant. Ce système de stockage est composé d'une structure (1) flottante comprenant un ou plusieurs réservoirs (2) de flottaison et un ou plusieurs réservoirs (3) de stockage. Le réservoir (2) de flottaison est conçu pour supporter la structure flottante de manière qu'elle présente un tirant d'eau prédéfini constant sans lestage. Le réservoir (3) de stockage est équipé d'un système (4) de ventilation situé au sommet du réservoir, et communique avec les eaux extérieures par l'intermédiaire de tubes (5) situés dans le fond du réservoir, de manière que l'air est pressé hors du réservoir par le sommet et l'eau de mer est pressée hors du réservoir par fond lorsqu'on remplit le réservoir (3) de stockage avec du pétrole ou du condensat
PCT/NO2001/000408 2000-10-10 2001-10-08 Systeme de stockage flottant WO2002030738A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001294427A AU2001294427A1 (en) 2000-10-10 2001-10-08 Floating storage system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20005099 2000-10-10
NO20005099A NO314720B1 (no) 2000-10-10 2000-10-10 Flytende plattformkonstruksjon for lagring av olje og/eller kondensat som produseres fra en undervannsbrönn

Publications (1)

Publication Number Publication Date
WO2002030738A1 true WO2002030738A1 (fr) 2002-04-18

Family

ID=19911671

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2001/000408 WO2002030738A1 (fr) 2000-10-10 2001-10-08 Systeme de stockage flottant

Country Status (3)

Country Link
AU (1) AU2001294427A1 (fr)
NO (1) NO314720B1 (fr)
WO (1) WO2002030738A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012153425A (ja) * 2011-01-28 2012-08-16 Sekisui Chem Co Ltd 液中貯蔵装置及び方法並びに淡水製造貯蔵システム
CN103449063A (zh) * 2012-07-09 2013-12-18 中国海洋石油总公司 零污染油水置换水下储油***
WO2014165765A1 (fr) * 2013-04-06 2014-10-09 Safe Marine Transfer, LLC Procédés et dispositifs de déploiement de grands ensembles sous-marins
NO20171505A1 (en) * 2017-09-19 2019-03-20 Subsea 7 Norway As Subsea storage of crude oil
CN110816791A (zh) * 2018-08-09 2020-02-21 中国船舶重工集团公司第七六○研究所 一种细长型水下浮箱的注排水控制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631832A (en) * 1969-08-25 1972-01-04 Mobil Oil Corp Tanker construction
US4653960A (en) * 1986-05-20 1987-03-31 Chun Joong H Submersible offshore drilling production and storage platform with anti-catenary stationing
US5074715A (en) * 1987-03-04 1991-12-24 Norwegian Contractors A/S Oil storage system
JPH11105784A (ja) * 1997-10-06 1999-04-20 Sumitomo Heavy Ind Ltd ダブルハル構造原油タンカーの貨油タンク防食方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631832A (en) * 1969-08-25 1972-01-04 Mobil Oil Corp Tanker construction
US4653960A (en) * 1986-05-20 1987-03-31 Chun Joong H Submersible offshore drilling production and storage platform with anti-catenary stationing
US5074715A (en) * 1987-03-04 1991-12-24 Norwegian Contractors A/S Oil storage system
JPH11105784A (ja) * 1997-10-06 1999-04-20 Sumitomo Heavy Ind Ltd ダブルハル構造原油タンカーの貨油タンク防食方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199926, Derwent World Patents Index; AN 1999-307548/26, XP002953202 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012153425A (ja) * 2011-01-28 2012-08-16 Sekisui Chem Co Ltd 液中貯蔵装置及び方法並びに淡水製造貯蔵システム
CN103449063A (zh) * 2012-07-09 2013-12-18 中国海洋石油总公司 零污染油水置换水下储油***
CN103449063B (zh) * 2012-07-09 2015-06-24 中国海洋石油总公司 零污染油水置换水下储油***
WO2014165765A1 (fr) * 2013-04-06 2014-10-09 Safe Marine Transfer, LLC Procédés et dispositifs de déploiement de grands ensembles sous-marins
NO20171505A1 (en) * 2017-09-19 2019-03-20 Subsea 7 Norway As Subsea storage of crude oil
NO345571B1 (en) * 2017-09-19 2021-04-19 Subsea 7 Norway As Method and storage tank for subsea storage of crude oil
CN110816791A (zh) * 2018-08-09 2020-02-21 中国船舶重工集团公司第七六○研究所 一种细长型水下浮箱的注排水控制方法

Also Published As

Publication number Publication date
NO20005099D0 (no) 2000-10-10
NO314720B1 (no) 2003-05-12
AU2001294427A1 (en) 2002-04-22
NO20005099L (no) 2002-04-11

Similar Documents

Publication Publication Date Title
US4188157A (en) Marine structure
US4405258A (en) Method for containing oil and/or gas within a blow-out cover dome
US6375391B1 (en) Guide device for production risers for petroleum production with a “dry tree semisubmersible” at large sea depths
US7735506B2 (en) Methods for storing gas
US4907912A (en) Submersible production storage barge and method for transporting and installing a jack-up rig in a body of water
US3429128A (en) Offshore storage structure
CA1152890A (fr) Methode et colonne de captage et de separation du petrole, du gaz et de l'eau d'un forage en eruption au fond de la mer
US6817809B2 (en) Seabed oil storage and tanker offtake system
JPS63315796A (ja) モジュール形海面近傍設備
NO163522B (no) Flytende modulsystem omfattende en sammenstilling av sylindre.
CN101980917A (zh) 液体储存、装卸装置及以其为基础的海上钻井和生产设施
CN101544272A (zh) 液体水下储存、装载和外卸装置
CA1243495A (fr) Systeme d'ancrage a pression equilibree pour plates-formes petrolieres
US2631558A (en) Marine oil storage tank
EP0170698B1 (fr) Installation de stockage et de transfert de petrole
US20050163572A1 (en) Floating semi-submersible oil production and storage arrangement
GB2194979A (en) Multi-well hydrocarbon development system
US20080041068A1 (en) Liquefied natural gas re-gasification and storage unit
GB2071020A (en) Apparatus for capturing subsea leakage of oil and gas
WO2002030738A1 (fr) Systeme de stockage flottant
GB1581371A (en) Reservoir and hinged column assembly
US4660606A (en) Offshore oil storage and transfer facility and method
CN208544673U (zh) 高压气瓶充气自动沉降式海水顶升储油罐
EP1163422A1 (fr) Systeme avec chassis de guidage pour colonnes montantes de production de petrole, chassis de guidage pour colonnes montantes, elements flotteurs pour colonnes montantes et plate-forme de production semi-submersible
GB2480112A (en) Recovery of oil for a spilling subsea well

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP