CN102105651A - Method and system for subsea processing of multiphase well effluents - Google Patents
Method and system for subsea processing of multiphase well effluents Download PDFInfo
- Publication number
- CN102105651A CN102105651A CN2009801292822A CN200980129282A CN102105651A CN 102105651 A CN102105651 A CN 102105651A CN 2009801292822 A CN2009801292822 A CN 2009801292822A CN 200980129282 A CN200980129282 A CN 200980129282A CN 102105651 A CN102105651 A CN 102105651A
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- gas
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 109
- 239000012530 fluid Substances 0.000 claims abstract description 58
- 238000000926 separation method Methods 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000003345 natural gas Substances 0.000 claims abstract description 4
- 230000001276 controlling effect Effects 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000010779 crude oil Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000004044 response Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/36—Underwater separating arrangements
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Jet Pumps And Other Pumps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A method and system are disclosed for subsea processing multiphase well effluents comprising natural gas and liquid from a subsea hydrocarbon containing formation, which system (1) comprises: - a fluid separation vessel (6) which is connected to a downstream end of a multiphase well effluent transportation conduit (7); - a liquid level transmitter assembly (21,22) for monitoring the gas liquid interface (23) in the fluid separation vessel (6); - a liquid enriched fluid transportation flowline (14) connected at or near the bottom (13) of the fluid separation vessel (6) and a gas enriched fluid transportation flowline (12) connected at or near a top (11) of the fluid separation vessel (6); - a pump (17) connected to an electric motor (18); and - a fast acting variable speed drive system, which is coupled to the liquid level controller which adjusts the pump and motor speed setpoint within 2 seconds to maintain the liquid level in the vessel at a predetermined setpoint.
Description
Technical field
The present invention relates to be used for the method and system that handle in the seabed of heterogeneous well effluent.
Background technology
United States Patent (USP) 7,210,530 disclose a kind of fluid delivery system, and it comprises vertical liquid eliminator and riser assemblies, the liquid outlet port that described assembly comprises multiphase separator inlet, vapor outlet port and standpipe and is connected to hydraulically powered centrifugal pump.By the running speed of control pump, the liquid level of the institute's separating liquid in the eliminator can be controlled, and need not control valve.Vertical eliminator can be realized low voltage operated, and can realize the bigger change of liquid levels height controlled in the eliminator, controls from the liquid levels height that penetrates the low pressure well in the low pressure reservoir with the pump that allows to have than long response time.
This area exists the one or more needs in following apparatus or the system:
Hydraulic pump, its response time is less than about 20 seconds, or less than about 60 seconds;
Hydraulic pump, it combines with differential pressure pick-up, with the flow through flow velocity of liquid of liquid flow tube of control;
Sub sea processing system, it need not low liquid level shutdown system, and described low liquid level shutdown system is used to protect pump not to be subjected to mechanical failure under the situation that eliminator drains off.
Summary of the invention
According to the present invention, provide a kind of and carry out the method that handle in the seabed originating from the heterogeneous well effluent of hydrocarbon containing formation under water, said method comprising the steps of:
With the fluid separation container arrangement the sea bed place or near;
Guide heterogeneous well effluent flow through from the stratum well and heterogeneous well effluent conveyance conduit under water, arrive the fluid separation container;
Mixture in the described fluid separation container is separated into fluid section that is rich in gas and the fluid section that is rich in liquid;
The fluid section that is rich in liquid is transported to surperficial crude oil gas treatment facility with the separated stream pipe of fluid section that is rich in gas;
Increase the pressure of the stream pipe be used for carrying the fluid section that is rich in liquid by pump, the variation of the gas-liquid interface height of the speed responsive of described pump in described separation container is regulated;
Wherein, described pump is by motor-driven, and the speed of described motor is controlled by the fast motion variable speed drive system.
Description of drawings
Fig. 1 is the schematic diagram according to a kind of sub sea processing system of the present invention.
The specific embodiment
Liquid levels height transmitter is measured the liquid levels height in the separation container, and sends the liquid level signal to controller, and controller is regulated the pump speed setting value in the cascade unit, so that the liquid levels height is remained on the predetermined set value.This liquid surface height controlling device is regulated providing extremely fast action to handle the liquid level disturbance that the variation by liquid feed rate causes, thereby it is adjusted so that response is made in the variation of liquid levels height to make pump speed set value almost moment.But this liquid surface height controlling device also provides stable pump speed when liquid feed rate is stablized.
The fast motion speed-changing driving device receives its speed setting value from the liquid surface height controlling device, and improves or reduce pump speed in 2 seconds, and only the physical property by concrete speed-changing driving device limits.This fast motion liquid surface height controlling device makes it possible to use compact piece-rate system, because the liquid surface height can remain in the little compass now.
Further preferably, pump is gasproof pump or multiphase pump, occurrent eliminator drains off or gas gushes situation to guarantee can to tolerate when violent liquid charging disturbance occurring, may need when occurring violent liquid charging disturbance than use speed-changing driving device response in fact in the cards faster pump speed respond.
Further preferably:
Be used to carry the stream pipe of the fluid section that is rich in gas be connected place, separation container top or near, and the stream pipe that is used to carry the fluid section that is rich in liquid be connected gravity separation vessel bottom place or near, wherein saidly be used to carry the stream pipe of the fluid section that is rich in gas to be equipped with the liquid flooding valve, if liquid enters this liquid flooding valve, then this liquid flooding valve cuts out
Described separation container and liquid flooding valve are arranged in the separator module, and this separator module is installed on the pumping plant pedestal at sea bed place recoverablely, and
Pump and pump motor are installed in the pump module, and this pump module is installed on the pumping plant pedestal recoverablely.
And, the inlet of fluid re-circulation pipeline can be connected to the fluid-transporting tubing that is rich in liquid in the pump location downstream, the outlet of fluid re-circulation pipeline is connected to heterogeneous well effluent conveyance conduit, this fluid re-circulation pipeline is equipped with valve, this valve is opened in the pump startup process, and closes subsequently.
According to the present invention, also provide to be used for to carry out the system that handle in the seabed from the heterogeneous well effluent that comprises natural gas and liquid of hydrocarbon containing formation under water, described system comprises:
The fluid separation container, it is connected to the downstream of heterogeneous well effluent conveyance conduit;
Liquid levels height transmitter assembly, it is used for the gas-liquid interface of monitoring fluid separation container;
The liquid levels height controller, it receives the signal from the liquid level transmitter, and produces the pump speed setting value, so that the liquid levels height is controlled to predetermined set value;
Be rich in the FLUID TRANSPORTATION stream pipe of liquid, its be connected fluid separation container bottom place or near; With the FLUID TRANSPORTATION stream pipe that is rich in gas, its be connected the fluid separation container place, top or near;
Pump, it is connected to motor;
The fast motion variable speed drive system, it is connected to the liquid levels height controller, and this liquid levels height controller was realized with actual capabilities in 2 seconds, the speed of control pump and motor as quickly as possible is to reach the pump speed setting value from liquid-level controller.
These and other feature, embodiment and the advantage of the method according to this invention and system appending claims, summary and below be described in the disclosed DETAILED DESCRIPTION OF THE PREFERRED in to accompanying drawing, use therein Reference numeral refers to the respective drawings mark that shows in the accompanying drawing.
Fig. 1
Fig. 1 has shown according to sub sea processing system 1 of the present invention, comprises separation module 2 and pump module 3, and they are installed on the pedestal 4 relatively, and pedestal 4 is installed on the sea bed 5.
In order to improve liquid yield, and reduce the back pressure of quiet liquid fluid column among the standpipe part 14A that liquid is filled on the separation container 6, pump module 3 comprises gasproof liquid pump 17, and it is driven by motor 18, and motor 18 is by power supply 20 power supplies of cable 19 by platform 15 places.
Under liquid gushed situation, in order to suppress in the liquid inflow gas conveyance conduit 12, liquid flooding valve 25 was arranged in the gas transmission pipeline 12, was positioned near the upper gas outlet 11, if liquid is poured in this valve, then this valve self cuts out automatically.
In pump 17 start-up courses, the at least a portion that exports 13 liquid of discharging from lower liquid is circulated back to heterogeneous well effluent stream pipe 7 by liquid recirculation conduit 26, liquid recirculation conduit 26 is equipped with valve 27, and this valve 27 is opened in the pump startup phase process, and closes gradually subsequently.Valve 27 can comprise conventional seabed flap valve and on-off valve, and it does not need fast motion, will multiphase pump 17 not had a negative impact because can not control the recycling flow velocity.
Thereby be according to an advantage of sub sea processing system of the present invention, valve 25 and 27 can be simple switch valve, it does not need the dynamic control of complexity that valve is opened, and motor 18 is unique subsea components of dynamically being controlled by the fast motion variable speed drive system, and described fast motion variable speed drive system receives its speed setting value from the liquid surface height controlling device.
The modular construction of system 1 allows to change, check and/or repair by disconnecting the container that built-in union 30 of thorn sheet and submarine cable connector 31 rise to pump and/or separator module 3,2 water surface 16 places then, changes, checks and/or repair recoverable pump and separator module 3 and 2.
Should understand, treatment in accordance with the present invention system 1 can be installed in the bottom 5 in ocean, sea, lake and/or river, and answers extensive interpretation for comprising all these options as term used in this specification and the appended claims " seabed ".
Claims (14)
1. one kind is carried out the method that handle in the seabed to originating from the heterogeneous well effluent of hydrocarbon containing formation under water, and described method comprises:
With the fluid separation container arrangement the sea bed place or near;
Guide flow through from stratum well and heterogeneous well effluent conveyance conduit of heterogeneous well effluent to arrive the fluid separation container under water;
Mixture in the described fluid separation container is separated into fluid section that is rich in gas and the fluid section that is rich in liquid;
The described fluid section that is rich in liquid is transported to surperficial crude oil gas treatment facility with the separated stream pipe of fluid section that is rich in gas;
Increase the pressure of the stream pipe be used for carrying the fluid section that is rich in liquid by pump, the variation of the gas-liquid interface height of the speed responsive of described pump in described separation container is regulated;
Wherein, described pump is by motor-driven, the speed of described motor is by the fast motion variable speed drive system control that is connected to the liquid levels height controller, described liquid levels height controller is monitored the liquid levels height in the described separation container, if being elevated to, the liquid levels height is higher than predetermined liquid liquid level setting value, then in 2 seconds, increase pump speed, be lower than predetermined liquid liquid level setting value, then in 2 seconds, reduce pump speed if the liquid levels height drops to.
2. method according to claim 1, wherein, if the liquid levels height is lower than predetermined minimum height or is higher than predetermined maximum height, then described fast motion speed-changing driving device increased or reduces the pump speed in the cascade unit in 1 to 2 second.
3. method according to claim 1, wherein, described pump is the gasproof multiphase pump.
4. method according to claim 3, wherein, described pump is a positive-displacement pump.
5. method according to claim 4, wherein, described pump is a Quimby pump.
6. method according to claim 1, wherein, described fluid separation container is a gravity separation vessel, and the described stream pipe that is used to carry the fluid section that is rich in gas be connected described gravity separation vessel the place, top or near, the described stream pipe that is used to carry the fluid section that is rich in liquid be connected described gravity separation vessel the place, bottom or near.
7. method according to claim 1, wherein, described fluid separation container is a close-coupled, Cyclonic separation container for example, and the described stream pipe that is used to carry the fluid section that is rich in gas be connected gravity separation vessel the place, top or near, the described stream pipe that is used to carry the fluid section that is rich in liquid be connected described gravity separation vessel the place, bottom or near.
8. method according to claim 6 wherein, describedly is used to carry the stream pipe of the fluid section that is rich in gas to be equipped with the liquid flooding valve, if liquid enters described liquid flooding valve, then described liquid flooding valve cuts out.
9. method according to claim 8, wherein, described separation container and liquid flooding valve are arranged in the separator module, and described separator module is installed on the pumping plant pedestal at sea bed place recoverablely.
10. method according to claim 9, wherein, described pump and pump motor are installed in the pump module, and described pump module is installed on the described pumping plant pedestal recoverablely.
11. method according to claim 1, wherein, the inlet of fluid re-circulation pipeline is connected to the described fluid-transporting tubing that is rich in liquid in described pump location downstream, the outlet of described fluid re-circulation pipeline is connected to described heterogeneous well effluent conveyance conduit, described fluid re-circulation pipeline is equipped with valve, described valve is opened in described pump startup process, and closes subsequently.
12. method according to claim 11, wherein, described liquid flooding valve and pump recycle valve are the slow motion valve, and they are configured to through common about 20 seconds time interval and in the fully open position and move between the fastening position fully.
13. one kind is used for carry out the system that handle in the seabed from the heterogeneous well effluent that comprises natural gas and liquid of hydrocarbon containing formation under water, described system comprises:
The fluid separation container, described fluid separation container is connected to the downstream of heterogeneous well effluent conveyance conduit;
Liquid levels height transmitter assembly, described liquid levels height transmitter assembly is used for monitoring the gas-liquid interface of described fluid separation container;
Be rich in the FLUID TRANSPORTATION stream pipe of liquid, the described FLUID TRANSPORTATION stream pipe that is rich in liquid be connected described fluid separation container the place, bottom or near; With the FLUID TRANSPORTATION stream pipe that is rich in gas, the described FLUID TRANSPORTATION stream pipe that is rich in gas be connected described fluid separation container the place, top or near;
Pump, described pump is connected to motor;
The fast motion variable speed drive system, described fast motion variable speed drive system is connected to described liquid levels height controller, described liquid levels height controller provides pump and the motor speed setting value in the cascade unit, with with liquid surface height controlling to predetermined set value, and be configured in 2 seconds, make described pump and motor speed to reach the command speed setting value.
14. system according to claim 13, wherein, described fast motion variable speed drive system is configured in 1 to 2 second to increase and to reduce pump and the motor speed in the cascade unit, so that the speed setting value that is provided by described height controller to be provided.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08161579A EP2149673A1 (en) | 2008-07-31 | 2008-07-31 | Method and system for subsea processing of multiphase well effluents |
| EP08161579.1 | 2008-07-31 | ||
| PCT/US2009/052186 WO2010014770A1 (en) | 2008-07-31 | 2009-07-30 | Method and system for subsea processing of multiphase well effluents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102105651A true CN102105651A (en) | 2011-06-22 |
Family
ID=40723220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801292822A Pending CN102105651A (en) | 2008-07-31 | 2009-07-30 | Method and system for subsea processing of multiphase well effluents |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20110155385A1 (en) |
| EP (1) | EP2149673A1 (en) |
| CN (1) | CN102105651A (en) |
| AU (1) | AU2009276524B2 (en) |
| BR (1) | BRPI0916521A2 (en) |
| GB (1) | GB2475184B (en) |
| NO (1) | NO20110309A1 (en) |
| WO (1) | WO2010014770A1 (en) |
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| CN103883290A (en) * | 2014-03-26 | 2014-06-25 | 中国海洋石油总公司 | Multiphase flow mixing and conveying system for offshore oil and gas field |
| CN107143321A (en) * | 2017-07-05 | 2017-09-08 | 中国石油大学(华东) | A kind of finger-like slug flow dissipation separator |
| CN107532470A (en) * | 2015-04-01 | 2018-01-02 | 沙特阿拉伯石油公司 | Fluid for oil gas application drives hybrid system |
| CN107727553A (en) * | 2017-10-31 | 2018-02-23 | 中国石油大学(北京) | A kind of viscous crude free-boundary problem and percolation law measurement apparatus and method |
| CN110631870A (en) * | 2018-06-21 | 2019-12-31 | 中国石油化工股份有限公司 | Gas taking device and gas taking method suitable for seabed free gas |
| CN116087053A (en) * | 2022-12-15 | 2023-05-09 | 长江大学 | Method for researching influence of thick oil starting pressure gradient on distribution of residual oil |
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| AU2011245498B2 (en) * | 2010-04-27 | 2015-09-17 | Shell Internationale Research Maatschappij B.V. | Method of retrofitting subsea equipment with separation and boosting |
| IT1401274B1 (en) * | 2010-07-30 | 2013-07-18 | Nuova Pignone S R L | SUBMARINE MACHINE AND METHODS FOR SEPARATING COMPONENTS OF A MATERIAL FLOW |
| NO334268B1 (en) * | 2011-04-15 | 2014-01-27 | Apply Nemo As | An underwater cooling device |
| WO2014018585A1 (en) * | 2012-07-24 | 2014-01-30 | Shell Oil Company | Apparatus, system and method for removing gas from fluid produced from a wellbore |
| US9551215B2 (en) * | 2012-08-13 | 2017-01-24 | Onesubsea Ip Uk Limited | Apparatus and system for passively sampling production fluid from a well |
| CA2894739A1 (en) | 2012-09-12 | 2014-03-20 | Fmc Technologies, Inc. | Subsea multiphase pump or compressor with magnetic coupling and cooling or lubrication by liquid or gas extracted from process fluid |
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| US10801309B2 (en) | 2012-09-12 | 2020-10-13 | Fmc Technologies, Inc. | Up-thrusting fluid system |
| GB2509165B (en) * | 2012-12-21 | 2018-01-24 | Subsea 7 Norway As | Subsea processing of well fluids |
| AU2014236733B2 (en) * | 2013-03-15 | 2016-06-30 | Fmc Technologies, Inc. | Submersible well fluid system |
| KR101507226B1 (en) | 2013-06-05 | 2015-03-30 | 현대중공업 주식회사 | Dual pipe system for high productivity of undersea plant |
| US20160273329A1 (en) * | 2013-11-07 | 2016-09-22 | Shell Oil Company | Thermally activated strong acids |
| US9133690B1 (en) * | 2014-09-09 | 2015-09-15 | Chevron U.S.A. Inc. | System and method for mitigating pressure drop at subsea pump startup |
| NO338639B1 (en) * | 2014-11-10 | 2016-09-26 | Vetco Gray Scandinavia As | Multiphase fluid separation and pressure boosting system |
| EP3054083B1 (en) * | 2015-02-05 | 2017-05-17 | Saipem S.p.A. | Underwater hydrocarbon processing facility |
| NO339736B1 (en) * | 2015-07-10 | 2017-01-30 | Aker Subsea As | Subsea pump and system and methods for control |
| CN106401539B (en) * | 2016-10-24 | 2019-03-01 | 中海石油(中国)有限公司 | Subsea manifold device with the automatic emission function of spherical pig |
| BR102017009298B1 (en) * | 2017-05-03 | 2022-01-18 | Petróleo Brasileiro S.A. - Petrobras | HYDRAULICALLY ACTIVATED SUBSEA PUMPING SYSTEM AND METHOD |
| GB2578012B (en) | 2017-05-15 | 2022-06-15 | Aker Solutions As | System and method for fluid processing |
| US10844698B2 (en) * | 2017-12-01 | 2020-11-24 | Onesubsea Ip Uk Limited | Liquid retainer for a production system |
| GB2585724B (en) * | 2018-12-11 | 2022-04-20 | Enpro Subsea Ltd | Apparatus, Systems and Methods for Oil and Gas Operations |
| GB201901257D0 (en) | 2019-01-30 | 2019-03-20 | Enpro Subsea Ltd | Apparatus, systems and methods for oil and gas operations |
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- 2009-07-30 GB GB1101265A patent/GB2475184B/en not_active Expired - Fee Related
- 2009-07-30 BR BRPI0916521A patent/BRPI0916521A2/en not_active Application Discontinuation
- 2009-07-30 AU AU2009276524A patent/AU2009276524B2/en not_active Ceased
- 2009-07-30 US US13/056,905 patent/US20110155385A1/en not_active Abandoned
- 2009-07-30 CN CN2009801292822A patent/CN102105651A/en active Pending
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2011
- 2011-02-25 NO NO20110309A patent/NO20110309A1/en not_active Application Discontinuation
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| CN1831341A (en) * | 2004-11-09 | 2006-09-13 | 普拉德研究及开发股份有限公司 | Subsea pumping system |
| WO2008004883A1 (en) * | 2006-07-07 | 2008-01-10 | Norsk Hydro Produksjon A.S. | Method of processing and separating a multiphase well effluent mixture |
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| CN110631870A (en) * | 2018-06-21 | 2019-12-31 | 中国石油化工股份有限公司 | Gas taking device and gas taking method suitable for seabed free gas |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2010014770A1 (en) | 2010-02-04 |
| BRPI0916521A2 (en) | 2015-11-10 |
| GB2475184B (en) | 2011-10-19 |
| EP2149673A1 (en) | 2010-02-03 |
| GB2475184A (en) | 2011-05-11 |
| NO20110309A1 (en) | 2011-04-19 |
| US20110155385A1 (en) | 2011-06-30 |
| AU2009276524A1 (en) | 2010-02-04 |
| AU2009276524B2 (en) | 2013-02-28 |
| GB201101265D0 (en) | 2011-03-09 |
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