EP2121426B1 - Method and device for connecting a tanker at sea - Google Patents

Method and device for connecting a tanker at sea Download PDF

Info

Publication number
EP2121426B1
EP2121426B1 EP08723980A EP08723980A EP2121426B1 EP 2121426 B1 EP2121426 B1 EP 2121426B1 EP 08723980 A EP08723980 A EP 08723980A EP 08723980 A EP08723980 A EP 08723980A EP 2121426 B1 EP2121426 B1 EP 2121426B1
Authority
EP
European Patent Office
Prior art keywords
tanker
loading
stern
facility
loading facility
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.)
Not-in-force
Application number
EP08723980A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2121426A1 (en
Inventor
Hans Richard Hansen
Reinert Nordtveit
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.)
Altera Norway AS
Original Assignee
Teekay Norway 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 Teekay Norway AS filed Critical Teekay Norway AS
Priority to PL08723980T priority Critical patent/PL2121426T3/pl
Publication of EP2121426A1 publication Critical patent/EP2121426A1/en
Application granted granted Critical
Publication of EP2121426B1 publication Critical patent/EP2121426B1/en
Priority to CY20111100656T priority patent/CY1111948T1/el
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines

Definitions

  • This invention relates to a method for connecting a tanker at sea, and also a tanker.
  • GB 2 295 372 discloses a method according to the preamble of claim 1 and a tanker according to the preamble of claim 3. More particularly, it relates to a method for connecting a tanker to a loading facility at sea, in which, after having positioned itself at the loading facility, the tanker is connected to a loading hose for fluid to be transferred from the loading facility to the tanker.
  • the stern of the tanker is turned towards the loading facility, the tanker being provided at its stern with propulsion machinery which is steerable in the horizontal plane, after which the loading hose is connected to a cargo manifold located at the stern of the tanker.
  • the offshore loading facility may include, for example, a loading buoy or a production ship, often referred to as an FPSO (Floating Production, Storage and Offloading) vessel.
  • FPSO Floating Production, Storage and Offloading
  • loading of this kind is relatively vulnerable to weather, as forces from waves and wind acting on the bow of the tanker must be balanced by sufficient force from the thrusters to hold the bow of the tanker in a substantially fixed position relative to the loading facility. Especially in the wintertime it happens that loading must be put off because the effect of the thrusters is not sufficient to ensure that the bow of the tanker will stay in the right position during the loading.
  • bow manifolds are relatively highly exposed to sea spray and, thereby, icing in wintertime. This may entail considerable extra work before loading can be started.
  • the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art.
  • a method and a tanker in accordance with the invention is disclosed in claim 1 and respectively in claim 3.
  • the tanker is provided with so-called dynamic positioning, in which a control system calculates, by means of external navigation signals, any current deviation from a desired position, the control system seeking to reduce the deviation by means of the steering and propulsion machinery of the tanker.
  • the propulsion machinery which is steerable in the horizontal plane, includes at least two propellers which are arranged to be pivoted in the horizontal plane.
  • the propulsion machinery of tankers of this kind has substantially greater efficiency than what could possibly be transmitted via thrusters at the bow.
  • the cargo manifold which is at the stern of the tanker, is set back somewhat on the poop of the tanker, in order for any leakage at the manifold connection to be captured and directed to a collecting tank.
  • the loading hose may be formed by known loading hose arrangements and is not limited to a loading hose which is reeled up, in its inactive position, at the loading facility.
  • the cargo manifold which is located at the poop, is well protected from sea spray and icing during the sailing to the loading device, which simplifies to a substantial degree the connecting work in cold periods and in northern waters.
  • the reference numeral 1 indicates a tanker, for example a so-called “shuttle tanker” which is used for transporting crude oil from sea-based production sites to inshore receiving facilities.
  • the tanker 1 is connected to a loading facility 2 in the form of a production ship by means of a loading hose 4.
  • the loading hose 4 is formed by, for example, a flexible hose which is reeled up, in its inactive position, on a drum 6 on the production ship 2.
  • the loading hose 4 is provided with a connection 8 which complementarily fits a cargo manifold 10 in a manifold housing 12 on the poop 14 of the tanker 1.
  • the propulsion machinery 16 of the tanker 1 includes two propulsion propellers 18 steerable in the horizontal plane, which are placed at the stern 20 of the ship 1.
  • the propulsion propellers 18 take different directions relative to the longitudinal axis of the tanker 1. This indicates that the direction and thrust of the propulsion propellers 18 are controlled to keep the stern 20 of the tanker 1 in a desired position relative to the production ship 2.
  • the bow 22 of the tanker 1 may be allowed to turn according to the wind and weather. If necessary, the thrusters 24 of the tanker 1 are used to maintain the direction of the tanker 1.
  • the stern 20 of the tanker 1 is stabilized in this position as explained above.
  • the loading hose 4 is disconnected from the cargo manifold 10 and pulled back onto the production ship 2.
  • the tanker 1 then sails to its destination.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Ship Loading And Unloading (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Revetment (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Pipeline Systems (AREA)
EP08723980A 2007-03-15 2008-03-11 Method and device for connecting a tanker at sea Not-in-force EP2121426B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08723980T PL2121426T3 (pl) 2007-03-15 2008-03-11 Sposób i urządzenie do łączenia zbiornikowca na morzu
CY20111100656T CY1111948T1 (el) 2007-03-15 2011-07-06 Μεθοδος και μηχανισμος συνδεσης τανκερ στην θαλασσα

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20071395A NO336151B1 (no) 2007-03-15 2007-03-15 Fremgangsmåte og anordning for oppkopling av et tankskip til et lasteanlegg til havs
PCT/NO2008/000088 WO2008127117A1 (en) 2007-03-15 2008-03-11 Method and device for connecting a tanker at sea

Publications (2)

Publication Number Publication Date
EP2121426A1 EP2121426A1 (en) 2009-11-25
EP2121426B1 true EP2121426B1 (en) 2011-04-27

Family

ID=39529325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08723980A Not-in-force EP2121426B1 (en) 2007-03-15 2008-03-11 Method and device for connecting a tanker at sea

Country Status (11)

Country Link
EP (1) EP2121426B1 (el)
AT (1) ATE507139T1 (el)
BR (1) BRPI0808744A2 (el)
CA (1) CA2680755C (el)
CY (1) CY1111948T1 (el)
DE (1) DE602008006531D1 (el)
DK (1) DK2121426T3 (el)
ES (1) ES2364954T3 (el)
NO (1) NO336151B1 (el)
PL (1) PL2121426T3 (el)
WO (1) WO2008127117A1 (el)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO300536B1 (no) * 1994-11-24 1997-06-16 Norske Stats Oljeselskap Drivankersystem for skip
NO970301L (no) * 1997-01-24 1998-07-27 Pgs Offshore Technology As Anordning ved tankskip
US20020134455A1 (en) * 2001-03-23 2002-09-26 Leif Hoegh & Co. Asa Vessel and unloading system
US6688348B2 (en) * 2001-11-06 2004-02-10 Fmc Technologies, Inc. Submerged flowline termination buoy with direct connection to shuttle tanker

Also Published As

Publication number Publication date
ATE507139T1 (de) 2011-05-15
PL2121426T3 (pl) 2011-09-30
CY1111948T1 (el) 2015-11-04
WO2008127117A1 (en) 2008-10-23
CA2680755C (en) 2014-09-09
NO336151B1 (no) 2015-05-26
CA2680755A1 (en) 2008-10-23
DE602008006531D1 (de) 2011-06-09
NO20071395L (no) 2008-09-16
ES2364954T3 (es) 2011-09-19
DK2121426T3 (da) 2011-08-08
BRPI0808744A2 (pt) 2014-08-12
EP2121426A1 (en) 2009-11-25

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