EP2268889B1 - Sammelvorrichtung und diese verwendendes verfahren - Google Patents

Sammelvorrichtung und diese verwendendes verfahren Download PDF

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Publication number
EP2268889B1
EP2268889B1 EP09725394.2A EP09725394A EP2268889B1 EP 2268889 B1 EP2268889 B1 EP 2268889B1 EP 09725394 A EP09725394 A EP 09725394A EP 2268889 B1 EP2268889 B1 EP 2268889B1
Authority
EP
European Patent Office
Prior art keywords
fluid
collection device
solids
processing plant
plant
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
EP09725394.2A
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English (en)
French (fr)
Other versions
EP2268889A2 (de
Inventor
Arne Incoronato
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.)
Ott Subsea Bag Tech AS
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Ott Subsea Bag Tech AS
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Publication date
Application filed by Ott Subsea Bag Tech AS filed Critical Ott Subsea Bag Tech AS
Publication of EP2268889A2 publication Critical patent/EP2268889A2/de
Application granted granted Critical
Publication of EP2268889B1 publication Critical patent/EP2268889B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065—Separating solids from drilling fluids
    • E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/001—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor specially adapted for underwater drilling
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/005—Equipment for conveying or separating excavated material conveying material from the underwater bottom

Definitions

  • the present invention relates to a collection device and a method for using same. More particularly it concerns a collection device for solids and fluid directed from a first location on a seabed, on an offshore installation or onshore, and to a second location, where the fluid directs the solids material in through an inlet portion in a solids collection device provided with one or more permeable portions arranged to retain solids material exceeding a predetermined size.
  • the collection device according to NO20076546 has shown itself to function very satisfactorily regarding collecting of solids material and solves to a great extent the problems pointed out in prior art represented by said Norwegian Patent NO 320113 .
  • the applicant has however experienced that in some cases there is a need or a desire to be able to clean at least a portion of the fluid being used to direct the solids particles into the collection devices according to the above prior art, before it is released to the surroundings.
  • the need for cleaning may for example be due to the fluid itself containing chemical additives or other components added to the fluid as this directs the solids particles into the collection device and/or the need for cleaning may for example be due to the fluid in itself having added components believed to be pollutive or that it is being polluted by matter being released to the fluid from the solids.
  • the structure includes a generally closed tank adapted to be placed on the seabed near the drilling site.
  • the tank is provided with an upper inlet for supply of drill cuttings, and an outlet to the surrounding sea for water displaced during supply of drill cuttings.
  • the tank contains means for cleaning of the drill cuttings, and for storage of accumulated separated oil, fluids and other constituents separated out from the drill cuttings.
  • the structure further includes means for carrying off accumulated oil, fluids and other constituents that are lighter than water and that will gradually be released from the deposited drill cuttings.
  • WO 99/46474 discloses a system for separating particulate material from drilling fluid for underwater wells.
  • the system comprises an expandable tank positioned on a sea floor and connected between an annulus of the well and a return conduit for returning a drilling fluid to a platform at the surface.
  • US Patent No. 4480569 discloses an underwater device for collecting material removed from the bottom of a watercourse.
  • the device comprising a flexible bag, a flexible conduit connected to said bag and communicating with the interior thereof.
  • the device further comprising means for discharging a mixture of said material and water through said flexible conduit into said bag whereby said bag becomes increasingly inflated by such mixture.
  • the bag includes outlet means for draining water therefrom, and means for supporting said bag out of contact with the bottom of the watercourse.
  • US Patent No. 4555201 discloses a method for protecting riverbanks from overflowing during flooding conditions.
  • the method regards constraining a liquid such as water alone or mixed with solid particles and which includes providing an envelope and pumping a mixture of water and the solid particles into the envelope.
  • US Patent No. 5232475 discloses a method and an apparatus for substantially eliminating slug flow in a pipeline and for separating the liquid phase of a liquid/gas mixture from the gas phase thereof.
  • the object of the invention is to remedy or reduce at least one of the prior art drawbacks.
  • offshore installation is in this document meant a fixed or floating installation such as a rig or a floating vessel such as a ship or a barge.
  • the fluid processing plant may, for example, but not limited to, consist of one of or a combination of a fluid sampling and analysis plant, a cleaning plant or a storage plant.
  • a fluid sampling and analysis plant By sampling the fluid contained in the fluid collection device, it may be decided if the fluid is clean enough to be returned to the surroundings, which may be such as the sea, or if the fluid must be directed to a cleaning plant to undergo cleaning before perhaps being returned to the surroundings. It may be relevant, in cases where for example the fluid is polluted to a particularly high degree, to lead the fluid into storage containers, which in turn may be brought to suitable cleaning plants.
  • the fluid processing plant is in one embodiment positioned adjacent to the collection device. In one embodiment the whole or parts of the fluid processing plant is positioned a distance apart from the collection device.
  • the fluid in the latter embodiment, is lead between the collection device and the fluid processing plant by means of a conduit.
  • the fluid collection device is made of an elastic material so that the fluid collection device will be able to undergo a volume change as fluid flows into it.
  • the fluid collection device is made from a decomposable material.
  • the fluid collection device is preferably made of a material which is fluid tight, even if it for some uses may be acceptable if some of the fluid may seep through the fluid collection device.
  • the solids collection device may be any device suitable for retaining solids being supplied, but is preferably of a sort as shown in said Norwegian Patent Publication NO320113 and preferably of the sort described in said Norwegian Patent Application NO 20076546 .
  • the solids collection device is a container.
  • the container is preferably closed, at least at start, in the sense that it provides at least one compartment arranged to be able to retain solids material above a predetermined size from the surroundings outside the container.
  • the at least one permeable portion of the solids collection device has an increasing degree of permeability in a direction from the inlet portion and toward one or more portions spaced from the inlet portion of the collection device.
  • the increasing degree of permeability is in one embodiment provided by means of changing the size of openings in the wall portion of the collection device.
  • increasing the size of the permeable wall portions may provide the increasing degree of permeability.
  • the at least one permeable portion of the solids collection device is provided with openings having a first size, where at a distance from the inlet portion is provided at least one outlet opening having an opening of a second size, the first size being smaller than the second size.
  • an open portion arranged to be able to evacuate or flow substantially the same rate of fluid that is being pumped into the solids collection device constitutes the outlet opening. The fluid flowing out through the solids collection device, through the outlet opening and/or the permeable portions, flows into the fluid collection device.
  • At least one of the at least one permeable portions is provided with openings 100 ⁇ m or less, preferably 50 ⁇ m or less.
  • the above mentioned increasing degree of permeability and/or increase in outlet opening size(s), has the effect that the fluid carrying the solids material in through the inlet portion of the solids collection device, will encounter less and less resistance to evacuation or flow out of the solids collection device, the further away from the inlet portion the fluid is.
  • the fluid carrying the solids particles into the solids collection device may flow a furthest possible distance inside the solids collection device before being evacuated. Therefore, also substantially all of the fines may settle out in the solids collection device before the fluid flows out of it and into the fluid collection device.
  • the collection device might be placed packed together, such as folded or rolled up at the location where it shall receive the solids material.
  • a rolling up presupposes that the solids collection device is made from such as a fabric like material or is designed such that it may be unfolded from a rolled up condition and to a fully raised condition.
  • the fluid being directed into the above-mentioned solids collection device made from such as a fabric like material will initially flow out through the one or more permeable portions being closest to the inlet portion. Some of the solids particles being retained by the permeable portion will gradually clog the openings therein. Consequently the fluid will move further away from the closest but now clogged portions. The result is that the fluid causes an inflation or extension of the collection device as fluid and solids particles are lead in through the inlet portion.
  • the solids collection device is provided with at least one internal flow restrictive device.
  • the at least one internal flow restrictive device contributes among other things to reduce the flow rate inside the solids collection device and contributes thereby to an increased degree of settling out of the solids particles in the fluid.
  • the at least one flow restrictive device may also contribute to increase the stability of shape and the mechanical strength of the solids collection device.
  • At least portions of the material of the solids collection device are made of a biologically decomposable material. This has the effect that the mass lead into the solids collection device will after some time be laid bare, and a natural fauna may develop on a seabed or onshore.
  • a method for collection of solids material and fluid being directed from a first location on a seabed or onshore to a second location including placing at said second location a collection device that includes a solids collection device and a fluid collection device made from an elastic material, where the solids collection device is provided with one or more permeable wall portions arranged to retain solids material exceeding a certain size, and where the fluid collection device is arranged for collecting all of the fluid flowing out through the solids collection device, and where the fluid collected in the fluid collection device is directed through one opening in the fluid collection device to a fluid processing plant in such a way that the fluid is lead from the fluid collection device to the fluid processing plant.
  • Fig. 1 shows a dredging operation taking place on a seabed, where the mud mass is pumped via a conduit from a dredging machine and into a collection device, where the collection device comprises a solids collection device enclosed by a fluid collection device.
  • the reference number 1 indicates a collection device according to the present invention where the collection device 1 is made up of a solids collection device 1' being enclosed by a fluid collection device 1" .
  • the fluid collection device 1'' encloses the whole of the solids collection device 1'. It shall however be understood that the fluid collection device 1'' in alternative embodiments only encloses portions of the solids collection device 1'.
  • the fluid collection device 1'' need not for example, but may readily, enclose possible closed portions of the solids collection device or portions bearing against the ground.
  • a line 3 extends between an inlet portion 7 positioned on an upper portion of the solids collection device 1', and a dredging machine 5 known per se.
  • the line 3 extends in the embodiment shown through the wall portion of the fluid collection device 1'' and down to the inlet portion 7.
  • the dredging machine 5 is provided with a suction line 5' sucking mud mass and water, where the mud mass and the water is pumped via the line 3 and into the solids collection device 1' of the collection device 1.
  • a suction line 5' sucking mud mass and water, where the mud mass and the water is pumped via the line 3 and into the solids collection device 1' of the collection device 1.
  • one or more pumping units may be connected to the line 3.
  • the solids collection device 1' shown is of a sort shown in said patent application NO 20076546 by the applicant, and will therefore not be discussed in any greater detail in this embodiment example.
  • the water driving the mud mass may evacuate or flow out through the permeable wall portions of the solids collection device 1' and into the fluid collection device 1''.
  • the solids collection device 1' is in an end portion distal or spaced from the inlet portion 7 provided with an outlet opening 11 as shown in an embodiment where a portion of the wall of the solids collection device 1' is provided with a hole.
  • the outlet opening may be provided by one or more portions having higher permeability than the whole or parts of the rest of the solids collection device 1'.
  • a collection device 1 of the invention may, according to needs, material strength and any statutory limitations such as limitations in height for so-called overtrawlability, be produced in very many different sizes. In seabed operations tests have shown that a collection device 1 having a length of 30 - 50 m, and a width or diameter of 10 - 20 m has turned out to be suitable.
  • the coarsest material settles out under or close to the inlet portion 7 in the solids collection device 1', while the material carried inside the solids collection device 1', will become finer and finer in the direction toward the outlet opening 11.
  • a line 19, 20 extends up to a surface.
  • the line 19, 20 is arranged to be able to lead fluid to a not shown fluid processing plant.
  • the fluid processing plant may for example be one of or a combination of a fluid sampling and analysis plant, a cleaning plant, or a storage plant.
  • One or more transport containers may for example constitute the storage plant.
  • Samples of the fluid present in the fluid collection device 1'' may thus, by means known per se be lead to the fluid processing plant for analysis.
  • the fluid processing plant, or parts of it may in an alternative embodiment (not shown) be located at the collection device 1.
  • the results from the analysis may in ways known per se be communicated to such as a control room on an offshore installation, wherefrom further handling of the fluid present in the fluid collection device 1'', is controlled.
  • the fluid may be re-circulated by means of a pumping device 20' from the outlet portion 18 of the fluid collection device 1'' via line 19, 24 and 3 and back to the solids collection device 1' so that a further portion of the fines may be settled out in the solids collection device 1'.
  • binding agent may be added to the fluid a binding agent or precipitation agent contributing to particulate matter appearing dispersed in the liquid phase to flocculate so that the particles are gathered to larger and heavier particles thereby causing a quicker and more efficient separation and settling of the solids.
  • the binding agent is preferably an environmentally friendly chemical of a sort known per se. Most preferably is the binding agent an organic binding agent.
  • the binding agent is injected via a line 17 into the supply line 3 upstream of the inlet opening 7.
  • the binding agent may also be injected in the line 24.
  • the fluid may be lead in the lines 19, 20 by means of the pump 20' to a not shown cleaning plant located for example on an off shore installation. After cleaning on an offshore installation, the fluid may be returned to the sea.
  • the fluid is lead from the fluid collection device 1'' to containers (not shown) wherein the fluid is brought to a fluid processing plant onshore.
  • Samples of the fluid in the fluid collection device 1'' may for example be collected continuously or at predetermined intervals.
  • the lines 3 and 19 are removed, for example by means of an ROV, from the inlet portion 7 and the outlet portion 18 respectively, and possibly be connected to a new collection device in the way this is described in said Norwegian Patent Application NO20076546 .
  • FIG. 1 In the figure is shown an embodiment of a solids collection device 1' where two transverse walls 13, 13', are provided internally in the collection device 1 and transverse of its longitudinal direction between the inlet portion 7 and the outlet opening 11.
  • the transverse wall 13 which is nearest the inlet portion 7 extends from the bottom portion of the solids collection device 1' and about half way up toward the top portion.
  • the transverse wall 13' nearest the outlet opening 11 covers the whole of the internal cross-section of the solids collection device 1'.
  • transverse walls 13, 13' may be installed internally in the solids collection device 1', even if two are shown in Figure 1 . It shall further be understood that the transverse walls 13, 13' may be located in any desired angle relative to said longitudinal direction.
  • the transverse walls '13, 13'' have two objectives. Firstly, the transverse walls 13, 13' will act as bracing elements reinforing the wall portions of the solids collection device 1'. Secondly the transverse walls 13, 13' may, depending on their permeability, act as a flow restriction and thereby define chambers in the solids collection device 1'. The chambers may simplify inflation of the collection device 1 and at the same time cause a reduced fluid throughput rate. A reduced fluid throughput rate will result in further increased retention time for the fluid in the solids collection device 1' and thereby settling of fines closer to the inlet opening 7 as compared to a collection device 1 without transverse walls 13, 13'.
  • transverse walls 13, 13' may cover all or only portions of a cross-sectional area of the solids collection device 1'.
  • the collection device 1 may be connected to already existing systems (not shown) provided to separate sand from well production, a so-called “Sub sea sand separator”.
  • the present invention thus provides a collection device 1 arranged both to filter solids particles from a fluid, at the same time as the fluid is collected and before it is released to the surrounding environment, possibly after a cleaning process.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Treatment Of Sludge (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)

Claims (8)

  1. Eine Sammelvorrichtung (1) für von einer ersten Stelle auf dem Meeresgrund, auf einer Offshore-Installation oder auf dem Festland zu einer zweiten Stelle geführten Feststoffmaterialen und Flüssigkeit, wobei die Flüssigkeit die Feststoffmaterialen durch einen Einlassabschnitt (7) in eine Feststoffsammelvorrichtung (1') führt, welche mit einem oder mehreren durchlässigen Wandabschnitten (13, 13') ausgestattet ist, die angeordnet sind um Feststoffmaterialen die eine vorbestimmte Grösse übersteigen zurückzubehalten, dadurch gekennzeichnet, dass die Sammelvorrichtung (1) ferner mit einer aus einem elastischen Material hergestellten Flüssigkeitssammelvorrichtung (1") ausgestattet ist, welche angeordnet ist um die gesamte, aus der Feststoffsammelvorrichtung (1') fliessende Flüssigkeit zu sammeln und dass die Flüssigkeitssammelvorrichtung (1") mit einem Ausgang (18) für die Verbindung zu einer flüssigkeitsverarbeitenden Anlage ausgestattet ist, sodass die Flüssigkeit von der Flüssigkeitssammelvorrichtung (1") zu der flüssigkeitsverarbeitenden Anlage geleitet wird.
  2. Eine Sammelvorrichtung gemäss Anspruch 1, wobei die flüssigkeitsverarbeitende Anlage aus einer oder einer Kombination von flüssigkeitsprobenentnehmende Anlage und Analyseanlage, einer Reinigungsanlage oder einer Lageranlage gebildet ist.
  3. Eine Sammelvorrichtung gemäss Anspruch 1 oder 2, wobei die Flüssigkeitsverarbeitende Anlage sich in einer Distanz zur Sammelvorrichtung (1) befindet, und dass die Flüssigkeit zwischen der Sammelvorrichtung (1) und der flüssigkeitsverarbeitenden Anlage durch eine Leitung (19, 20) geführt wird.
  4. Eine Sammelvorrichtung gemäss irgendeinem der vorangehenden Ansprüche, wobei die Flüssigkeitssammelvorrichtung (1") aus einem zersetzbaren Material hergestellt ist.
  5. Ein Verfahren für die Sammlung von, von einer ersten Stelle auf dem Meeresboden oder an Land zu einer zweiten Stelle geführten, Feststoffmaterialen und Flüssigkeit, dadurch gekennzeichnet, dass das Verfahren an besagter zweiten Stelle das Setzen einer eine Feststoffsammelvorrichtung (1') und eine aus einem elastischen Material gefertigten Flüssigkeitssammelvorrichtung (1") umfassenden Sammelvorrichtung (1) umfasst, wobei die Feststoffsammelvorrichtung (1') mit einem Einlassabschnitt (13,13') und mit einem oder mehreren durchlässigen Wandabschnitten (13, 13'), die angeordnet sind um Feststoffmaterialen zurückzubehalten, die eine gewisse Grösse übersteigen ausgestattet ist, und wobei die Flüssigkeitssammelvorrichtung (1") für das Sammeln der gesamten, aus der Feststoffsammelvorrichtung (1') fliessenden Flüssigkeit angeordnet ist, und wobei die in der Flüssigkeitssammelvorrichtung (1") gesammelte Flüssigkeit durch eine Öffnung (18) in der Flüssigkeitssammelvorrichtung (1") zu einer flüssigkeitsverarbeitenden Anlage geleitet wird sodass dass die Flüssigkeit von der Flüssigkeitssammelvorrichtung (1") zu der flüssigkeitsverarbeitenden Anlage geleitet wird.
  6. Vorrichtung gemäss Anspruch 5, wobei die Flüssigkeit in der flüssigkeitsverarbeitenden Anlage einer Reinigung unterzogen wird.
  7. Ein Verfahren gemäss Anspruch 6, wobei das Verfahren ferner rückleiten der gereinigten Flüssigkeit zurück an die Umwelt umfasst.
  8. Ein Verfahren gemäss Anspruch 5, wobei das Verfahren ferner rezirkulieren der Flüssigkeit zurück an die Flüssigkeitssammelvorrichtung (1") umfasst.
EP09725394.2A 2008-03-28 2009-03-25 Sammelvorrichtung und diese verwendendes verfahren Not-in-force EP2268889B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20081530A NO329529B1 (no) 2008-03-28 2008-03-28 Oppsamlingsanordning og framgangsmate ved bruk av samme
PCT/NO2009/000109 WO2009120090A2 (en) 2008-03-28 2009-03-25 A collection device and method of using same

Publications (2)

Publication Number Publication Date
EP2268889A2 EP2268889A2 (de) 2011-01-05
EP2268889B1 true EP2268889B1 (de) 2014-04-16

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Application Number Title Priority Date Filing Date
EP09725394.2A Not-in-force EP2268889B1 (de) 2008-03-28 2009-03-25 Sammelvorrichtung und diese verwendendes verfahren

Country Status (5)

Country Link
EP (1) EP2268889B1 (de)
CA (1) CA2722617C (de)
DK (1) DK2268889T3 (de)
NO (1) NO329529B1 (de)
WO (1) WO2009120090A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO331478B1 (no) * 2010-12-21 2012-01-16 Seabox As Teknisk system, fremgangsmate og anvendelser for dosering av minst ett flytende behandlingsmiddel i injeksjonsvann til en injeksjonsbronn
EP2721254B1 (de) * 2011-06-17 2017-10-11 Nautilus Minerals Pacific Pty Ltd System und verfahren zur warenlagerung am meeresboden
AU2012269738A1 (en) * 2011-06-17 2013-11-14 Eda Kopa (Solwara) Limited Apparatus and method for seafloor stockpiling
CN112457968B (zh) * 2020-12-10 2023-10-03 浙江师范大学 一种水体微生物取样装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5232475A (en) * 1992-08-24 1993-08-03 Ohio University Slug flow eliminator and separator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480569A (en) * 1983-01-12 1984-11-06 Veen Abraham V D Container for ground material removed by a ground working device from the bottom of a watercourse
US4555201A (en) * 1983-11-14 1985-11-26 Paoluccio John A Sediment dike apparatus and methods
US5004051A (en) * 1989-09-12 1991-04-02 Norwegian Contracts A/S Method and means for cleansing and storing drill cuttings from drilling operations in the sea bottom
US6062313A (en) * 1998-03-09 2000-05-16 Moore; Boyd B. Expandable tank for separating particulate material from drilling fluid and storing production fluids, and method
NO320113B1 (no) 2003-12-03 2005-10-24 Incoronato Arne Anordning og fremgangsmate ved oppsamling av vannholdig borekaks fra en bronn
US7086472B1 (en) * 2005-04-08 2006-08-08 Arne Incoronato Device and method of collecting solids from a well
NO327759B1 (no) 2007-12-19 2009-09-21 Onsite Treat Technologies As Oppsamlingsanordning og framgangsmate ved bruk av samme

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5232475A (en) * 1992-08-24 1993-08-03 Ohio University Slug flow eliminator and separator

Also Published As

Publication number Publication date
EP2268889A2 (de) 2011-01-05
WO2009120090A3 (en) 2010-05-06
WO2009120090A2 (en) 2009-10-01
CA2722617C (en) 2016-02-09
NO329529B1 (no) 2010-11-08
NO20081530L (no) 2009-09-29
DK2268889T3 (da) 2014-07-21
CA2722617A1 (en) 2009-10-01

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