EP0980462B1 - Expandable well screen - Google Patents
Expandable well screen Download PDFInfo
- Publication number
- EP0980462B1 EP0980462B1 EP98924261A EP98924261A EP0980462B1 EP 0980462 B1 EP0980462 B1 EP 0980462B1 EP 98924261 A EP98924261 A EP 98924261A EP 98924261 A EP98924261 A EP 98924261A EP 0980462 B1 EP0980462 B1 EP 0980462B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slots
- carrier tube
- well screen
- filter sheets
- tube
- 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.)
- Expired - Lifetime
Links
- 239000002245 particle Substances 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims abstract description 3
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 230000005012 migration Effects 0.000 claims abstract description 3
- 238000013508 migration Methods 0.000 claims abstract description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 239000000945 filler Substances 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- 238000004904 shortening 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
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/108—Expandable screens or perforated liners
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
Definitions
- the invention relates to an expandable well screen for preventing migration of solid particles into a hydrocarbon fluid production well.
- the invention relates to an expandable well screen which comprises a number of filter sheets which are secured in an iris-shaped configuration and co-axial to an expandable slotted carrier tube such that as a result of expansion of the tube the amount of overlap between adjacent filter sheets is reduced.
- Figure 3 of this prior art reference discloses that the filter sheets consist of plates in which a series of circular perforations are present. The size of these perforations is chosen such that solid particles larger than the size of the hole are prevented from flowing into the well.
- a suitable expandable slotted carrier tube for use with the screen is disclosed in international patent application WO 93/25800 A.
- An object of the present invention is to provide a well screen comprising an iris-shaped configuration of filter sheets which do not buckle and which slide easily relative to each other and relative to the carrier tube during the process of expanding the carrier tube.
- the well screen according to the invention thereto comprises filter sheets having slots which are oriented in a substantially circumferential orientation with respect to the carrier tube.
- the reference to a circumferential arrangement of slots means that the slots each are directed in a substantially tangential orientation with respect to the carrier tube and such the slots are oriented substantially transversal to the central axis and any axial slots of the carrier tube.
- the filter sheets consist of elongate strips with staggered rows of slots in a transversal direction with respect to a longitudinal axis of each strip.
- the pattern of slots is preferably such that alternate rows are displaced up to half a slot pitch in the transverse direction, the length of the slots is greater than half the transverse slot pitch, and the pattern of slots is continued through the longitudinal edges of the strips.
- each strip is secured at regularly spaced points along its length to the expandable slotted carrier tube and that each strip is secured to the expandable slotted carrier tube at said points by either spot welding, brazing, soldering, gluing, riveting or screwing the strip to the tube at each of said points.
- Fig. 1 there is shown an expandable slotted carrier tube 1 which is surrounded by a well screen 2 which comprises a series of filter sheets 3 which are arranged in an iris-shaped configuration around the carrier tube 1.
- the filter sheets 3 consist of elongate rectangular strips which are each, as shown in Fig. 1 secured to the carrier tube 1 at attachment points 4 located on or close to the longitudinal centreline of the filter sheet 3 by for example spot welding, brazing, soldering, gluing, riveting or screwing at regularly spaced points along the length of the carrier tube 1.
- the attachment points are located on the nodes between the ends of the slots of the carrier tube 1.
- the filter sheets 3 overlap each other in both axial and circumferential direction such that during and after the expansion process which is illustrated in Fig. 4 at least some overlap remains between adjacent filter sheets 3.
- Fig. 3 the protective surrounding tube 5 which is shown in Figs. 1 and 2 has been omitted to show that the filter sheets 3 each comprise a series of staggered rows of circumferential slots 6 which are oriented in a substantially tangential direction with respect to the carrier tube 1 and substantially transversal to the axial slots 7 of the carrier tube 1 and to the central axis 8 of the carrier tube 1.
- the carrier tube 1 is expanded by an expansion cone 9 during the expansion process such that the axial slots 7 deform into a diamond shape.
- the illustrated sequential opening and closing of the circumferential slots 6 provides axial flexibility to the filter sheets 3 which prevents buckling or tearing of the fragile sheets 3 during expansion of the carrier tube 1.
- the circumferential slots 6 also allow the overlapping sheets 3 to slide easily relative to each other during the expansion process.
- the filter sheets 3 may also be arranged in a shallow helix around the carrier tube 1.
- the helix angle should be selected small enough so that the deviation of the slots 6 from the tangential direction of the carrier tube 1 is less than 20 degrees.
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Filtering Materials (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Separation Of Particles Using Liquids (AREA)
- Prostheses (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98924261A EP0980462B1 (en) | 1997-04-28 | 1998-04-27 | Expandable well screen |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97201267 | 1997-04-28 | ||
| EP97201267 | 1997-04-28 | ||
| EP98924261A EP0980462B1 (en) | 1997-04-28 | 1998-04-27 | Expandable well screen |
| PCT/EP1998/002577 WO1998049423A1 (en) | 1997-04-28 | 1998-04-27 | Expandable well screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0980462A1 EP0980462A1 (en) | 2000-02-23 |
| EP0980462B1 true EP0980462B1 (en) | 2003-01-08 |
Family
ID=8228269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98924261A Expired - Lifetime EP0980462B1 (en) | 1997-04-28 | 1998-04-27 | Expandable well screen |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0980462B1 (da) |
| AU (1) | AU717503B2 (da) |
| BR (1) | BR9809005A (da) |
| CA (1) | CA2284865C (da) |
| DE (1) | DE69810610T2 (da) |
| DK (1) | DK0980462T3 (da) |
| ID (1) | ID22839A (da) |
| MY (1) | MY119637A (da) |
| NO (1) | NO317766B1 (da) |
| NZ (1) | NZ337859A (da) |
| OA (1) | OA11211A (da) |
| RU (1) | RU2197600C2 (da) |
| UA (1) | UA57785C2 (da) |
| WO (1) | WO1998049423A1 (da) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4189211A4 (en) * | 2020-07-29 | 2024-08-07 | Baker Hughes Oilfield Operations, LLC | Downhole conformable screen system and method of making a conformable screen for downhole use |
Families Citing this family (74)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6263972B1 (en) * | 1998-04-14 | 2001-07-24 | Baker Hughes Incorporated | Coiled tubing screen and method of well completion |
| US6557640B1 (en) | 1998-12-07 | 2003-05-06 | Shell Oil Company | Lubrication and self-cleaning system for expansion mandrel |
| US7357188B1 (en) | 1998-12-07 | 2008-04-15 | Shell Oil Company | Mono-diameter wellbore casing |
| US6823937B1 (en) | 1998-12-07 | 2004-11-30 | Shell Oil Company | Wellhead |
| US7121352B2 (en) | 1998-11-16 | 2006-10-17 | Enventure Global Technology | Isolation of subterranean zones |
| US7231985B2 (en) | 1998-11-16 | 2007-06-19 | Shell Oil Company | Radial expansion of tubular members |
| GB2384502B (en) | 1998-11-16 | 2004-10-13 | Shell Oil Co | Coupling an expandable tubular member to a preexisting structure |
| GB2344606B (en) | 1998-12-07 | 2003-08-13 | Shell Int Research | Forming a wellbore casing by expansion of a tubular member |
| US7363984B2 (en) | 1998-12-07 | 2008-04-29 | Enventure Global Technology, Llc | System for radially expanding a tubular member |
| US7552776B2 (en) | 1998-12-07 | 2009-06-30 | Enventure Global Technology, Llc | Anchor hangers |
| US7195064B2 (en) | 1998-12-07 | 2007-03-27 | Enventure Global Technology | Mono-diameter wellbore casing |
| US6758278B2 (en) | 1998-12-07 | 2004-07-06 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
| US7185710B2 (en) | 1998-12-07 | 2007-03-06 | Enventure Global Technology | Mono-diameter wellbore casing |
| GB2356651B (en) | 1998-12-07 | 2004-02-25 | Shell Int Research | Lubrication and self-cleaning system for expansion mandrel |
| MY121129A (en) * | 1999-02-01 | 2005-12-30 | Shell Int Research | Method for creating secondary sidetracks in a well system |
| AU770359B2 (en) | 1999-02-26 | 2004-02-19 | Shell Internationale Research Maatschappij B.V. | Liner hanger |
| US7055608B2 (en) | 1999-03-11 | 2006-06-06 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
| CA2306656C (en) | 1999-04-26 | 2006-06-06 | Shell Internationale Research Maatschappij B.V. | Expandable connector for borehole tubes |
| US7350563B2 (en) | 1999-07-09 | 2008-04-01 | Enventure Global Technology, L.L.C. | System for lining a wellbore casing |
| GB9921557D0 (en) * | 1999-09-14 | 1999-11-17 | Petroline Wellsystems Ltd | Downhole apparatus |
| AU783245B2 (en) | 1999-11-01 | 2005-10-06 | Shell Internationale Research Maatschappij B.V. | Wellbore casing repair |
| US7234531B2 (en) | 1999-12-03 | 2007-06-26 | Enventure Global Technology, Llc | Mono-diameter wellbore casing |
| US6457518B1 (en) | 2000-05-05 | 2002-10-01 | Halliburton Energy Services, Inc. | Expandable well screen |
| US6530431B1 (en) | 2000-06-22 | 2003-03-11 | Halliburton Energy Services, Inc. | Screen jacket assembly connection and methods of using same |
| NO20013594L (no) * | 2000-07-27 | 2002-01-28 | Halliburton Energy Serv Inc | Fremgangsmåter for åpenhulls sandpakking med ekspanderbare siler |
| US6412565B1 (en) | 2000-07-27 | 2002-07-02 | Halliburton Energy Services, Inc. | Expandable screen jacket and methods of using same |
| US7100684B2 (en) | 2000-07-28 | 2006-09-05 | Enventure Global Technology | Liner hanger with standoffs |
| US6695054B2 (en) | 2001-01-16 | 2004-02-24 | Schlumberger Technology Corporation | Expandable sand screen and methods for use |
| US6789621B2 (en) | 2000-08-03 | 2004-09-14 | Schlumberger Technology Corporation | Intelligent well system and method |
| US6799637B2 (en) | 2000-10-20 | 2004-10-05 | Schlumberger Technology Corporation | Expandable tubing and method |
| US6494261B1 (en) | 2000-08-16 | 2002-12-17 | Halliburton Energy Services, Inc. | Apparatus and methods for perforating a subterranean formation |
| CN1502024A (zh) * | 2000-08-18 | 2004-06-02 | 哈利伯顿能源服务公司 | 可膨胀连接器 |
| AU9269501A (en) | 2000-09-18 | 2002-03-26 | Shell Oil Co | Liner hanger with sliding sleeve valve |
| GB2389597B (en) | 2000-10-02 | 2005-05-18 | Shell Oil Co | Plastically deforming and radially expanding a tubular member |
| WO2002053867A2 (en) | 2001-01-03 | 2002-07-11 | Enventure Global Technology | Mono-diameter wellbore casing |
| US7100685B2 (en) | 2000-10-02 | 2006-09-05 | Enventure Global Technology | Mono-diameter wellbore casing |
| GB2383058B (en) * | 2000-10-20 | 2004-04-21 | Schlumberger Holdings | Expandable wellbore tubing |
| GB2395214B (en) * | 2000-10-20 | 2004-12-29 | Schlumberger Holdings | Expandable wellbore tubing |
| BRPI0107164B1 (pt) * | 2000-10-20 | 2016-04-26 | Schlumberger Surenco Sa | equipamento para uso em um furo de poço, método para estabelecer uma seção não revestida de um furo de poço em uma formação subterrânea, método para facilitar o uso de um furo de poço, método para vedar uma parte de um furo de poço tubular, sistema para facilitar a comunicação ao longo de um furo de poço e método de roteamento de uma linha de poço |
| US6543545B1 (en) | 2000-10-27 | 2003-04-08 | Halliburton Energy Services, Inc. | Expandable sand control device and specialized completion system and method |
| US20040011534A1 (en) | 2002-07-16 | 2004-01-22 | Simonds Floyd Randolph | Apparatus and method for completing an interval of a wellbore while drilling |
| US6568472B1 (en) | 2000-12-22 | 2003-05-27 | Halliburton Energy Services, Inc. | Method and apparatus for washing a borehole ahead of screen expansion |
| NO335594B1 (no) * | 2001-01-16 | 2015-01-12 | Halliburton Energy Serv Inc | Ekspanderbare anordninger og fremgangsmåte for disse |
| US6695067B2 (en) | 2001-01-16 | 2004-02-24 | Schlumberger Technology Corporation | Wellbore isolation technique |
| US7168485B2 (en) | 2001-01-16 | 2007-01-30 | Schlumberger Technology Corporation | Expandable systems that facilitate desired fluid flow |
| ATE393296T1 (de) * | 2001-01-16 | 2008-05-15 | Schlumberger Technology Bv | Bistabile, ausdehnbare vorrichtung und verfahren zum ausdehnen einer solchen vorrichtung |
| GB2395506B (en) | 2001-07-06 | 2006-01-18 | Eventure Global Technology | Liner hanger |
| CA2453063C (en) | 2001-07-06 | 2011-03-22 | Enventure Global Technology | Liner hanger |
| US7258168B2 (en) | 2001-07-27 | 2007-08-21 | Enventure Global Technology L.L.C. | Liner hanger with slip joint sealing members and method of use |
| GB2409218B (en) | 2001-08-20 | 2006-03-15 | Enventure Global Technology | Apparatus and method for radially expanding tubular members including an adjustable tubular expansion device |
| WO2003023178A2 (en) | 2001-09-07 | 2003-03-20 | Enventure Global Technology | Adjustable expansion cone assembly |
| US7546881B2 (en) | 2001-09-07 | 2009-06-16 | Enventure Global Technology, Llc | Apparatus for radially expanding and plastically deforming a tubular member |
| US20030070811A1 (en) | 2001-10-12 | 2003-04-17 | Robison Clark E. | Apparatus and method for perforating a subterranean formation |
| GB2422859B (en) | 2001-11-12 | 2006-12-13 | Enventure Global Technology | Collapsible expansion cone |
| AU2002367348A1 (en) | 2001-12-27 | 2003-07-24 | Enventure Global Technology | Seal receptacle using expandable liner hanger |
| WO2004018824A2 (en) | 2002-08-23 | 2004-03-04 | Enventure Global Technology | Magnetic impulse applied sleeve method of forming a wellbore casing |
| US7424918B2 (en) | 2002-08-23 | 2008-09-16 | Enventure Global Technology, L.L.C. | Interposed joint sealing layer method of forming a wellbore casing |
| ATE417993T1 (de) | 2002-02-15 | 2009-01-15 | Enventure Global Technology | Bohrlochfutterrohr mit einem einzigen durchmesser |
| AU2003225001A1 (en) | 2002-05-29 | 2003-12-19 | Eventure Global Technology | System for radially expanding a tubular member |
| GB2418944B (en) | 2002-06-10 | 2006-08-30 | Enventure Global Technology | Mono Diameter Wellbore Casing |
| CA2499007C (en) | 2002-09-20 | 2012-08-07 | Enventure Global Technology | Bottom plug for forming a mono diameter wellbore casing |
| AU2003263859A1 (en) | 2002-09-20 | 2004-04-08 | Enventure Global Technology | Protective sleeve for expandable tubulars |
| CA2499071C (en) | 2002-09-20 | 2014-06-03 | Enventure Global Technology | Self-lubricating expansion mandrel for expandable tubular |
| WO2004076798A2 (en) | 2003-02-26 | 2004-09-10 | Enventure Global Technology | Apparatus for radially expanding and plastically deforming a tubular member |
| US7886831B2 (en) | 2003-01-22 | 2011-02-15 | Enventure Global Technology, L.L.C. | Apparatus for radially expanding and plastically deforming a tubular member |
| US7503393B2 (en) | 2003-01-27 | 2009-03-17 | Enventure Global Technology, Inc. | Lubrication system for radially expanding tubular members |
| US20050166387A1 (en) | 2003-06-13 | 2005-08-04 | Cook Robert L. | Method and apparatus for forming a mono-diameter wellbore casing |
| US7712522B2 (en) | 2003-09-05 | 2010-05-11 | Enventure Global Technology, Llc | Expansion cone and system |
| GB2432866A (en) | 2004-08-13 | 2007-06-06 | Enventure Global Technology | Expandable tubular |
| RU2289680C1 (ru) * | 2005-08-08 | 2006-12-20 | Закрытое Акционерное Общество "Новомет-Пермь" | Скважинный расширяющийся фильтр |
| RU2361069C2 (ru) * | 2006-02-27 | 2009-07-10 | Бейджин Хайнен-Хайтек Петролеум Текнолоджи Девелопмент Ко., Лтд | Способ изготовления фильтра |
| RU2433852C1 (ru) * | 2010-06-07 | 2011-11-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Способ изготовления скважинного фильтра |
| RU2479711C1 (ru) | 2011-11-28 | 2013-04-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Способ крепления продуктивных пластов при тепловых методах добычи нефти и расширяемый фильтр для его осуществления |
| GB201323121D0 (en) | 2013-12-30 | 2014-02-12 | Darcy Technologies Ltd | Downhole Apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2812025A (en) * | 1955-01-24 | 1957-11-05 | James U Teague | Expansible liner |
| US3353599A (en) * | 1964-08-04 | 1967-11-21 | Gulf Oil Corp | Method and apparatus for stabilizing formations |
| SU1583592A1 (ru) * | 1986-12-30 | 1990-08-07 | Подмосковный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт | Устройство дл изол ции газообразных продуктов взрыва в восстающей скважине |
| SU1550054A2 (ru) * | 1988-05-17 | 1990-03-15 | Грузинский Научно-Исследовательский Институт Гидротехники И Мелиорации | Скважинный фильтр |
| SU1754884A1 (ru) * | 1989-09-29 | 1992-08-15 | Центральный научно-исследовательский институт комплексного использования водных ресурсов | Скважинный фильтр |
| US5366012A (en) * | 1992-06-09 | 1994-11-22 | Shell Oil Company | Method of completing an uncased section of a borehole |
| CA2163754A1 (en) * | 1993-05-25 | 1994-12-08 | Oiltools International B.V. | Sand screen structure |
| UA67719C2 (en) * | 1995-11-08 | 2004-07-15 | Shell Int Research | Deformable well filter and method for its installation |
-
1998
- 1998-04-24 MY MYPI9801852 patent/MY119637A/en unknown
- 1998-04-27 ID IDW991281A patent/ID22839A/id unknown
- 1998-04-27 RU RU99125079A patent/RU2197600C2/ru active
- 1998-04-27 UA UA99116448A patent/UA57785C2/uk unknown
- 1998-04-27 DK DK98924261T patent/DK0980462T3/da active
- 1998-04-27 WO PCT/EP1998/002577 patent/WO1998049423A1/en not_active Ceased
- 1998-04-27 AU AU76517/98A patent/AU717503B2/en not_active Expired
- 1998-04-27 NZ NZ337859A patent/NZ337859A/xx not_active IP Right Cessation
- 1998-04-27 DE DE69810610T patent/DE69810610T2/de not_active Expired - Lifetime
- 1998-04-27 BR BR9809005-4A patent/BR9809005A/pt not_active IP Right Cessation
- 1998-04-27 EP EP98924261A patent/EP0980462B1/en not_active Expired - Lifetime
- 1998-04-27 CA CA002284865A patent/CA2284865C/en not_active Expired - Lifetime
-
1999
- 1999-10-27 NO NO19995248A patent/NO317766B1/no not_active IP Right Cessation
- 1999-10-28 OA OA9900238A patent/OA11211A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4189211A4 (en) * | 2020-07-29 | 2024-08-07 | Baker Hughes Oilfield Operations, LLC | Downhole conformable screen system and method of making a conformable screen for downhole use |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0980462A1 (en) | 2000-02-23 |
| DK0980462T3 (da) | 2003-04-07 |
| AU717503B2 (en) | 2000-03-30 |
| WO1998049423A1 (en) | 1998-11-05 |
| NO995248D0 (no) | 1999-10-27 |
| OA11211A (en) | 2003-07-18 |
| DE69810610D1 (de) | 2003-02-13 |
| NO317766B1 (no) | 2004-12-13 |
| UA57785C2 (uk) | 2003-07-15 |
| MY119637A (en) | 2005-06-30 |
| BR9809005A (pt) | 2000-08-08 |
| AU7651798A (en) | 1998-11-24 |
| CA2284865A1 (en) | 1998-11-05 |
| CA2284865C (en) | 2005-10-25 |
| ID22839A (id) | 1999-12-09 |
| RU2197600C2 (ru) | 2003-01-27 |
| NO995248L (no) | 1999-10-27 |
| DE69810610T2 (de) | 2003-07-03 |
| NZ337859A (en) | 2000-03-27 |
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