WO1997006346A1 - Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation - Google Patents
Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation Download PDFInfo
- Publication number
- WO1997006346A1 WO1997006346A1 PCT/FR1996/001226 FR9601226W WO9706346A1 WO 1997006346 A1 WO1997006346 A1 WO 1997006346A1 FR 9601226 W FR9601226 W FR 9601226W WO 9706346 A1 WO9706346 A1 WO 9706346A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- rings
- well
- sleeve according
- preform
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/105—Expanding tools specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
Definitions
- the present invention relates to an inflatable, radially deformable tubular sleeve used for casing or for sealing a well or a pipe.
- sleeves Under the designation "radially deformable”, sleeves can be designated which can be radially deployed either by simple unfolding (as is the case for the preform described in WO-91/18180 in particular), or which can be simply expanded radially (without unfolding ), by increasing their diameter under the effect of internal pressure, or which can be successively unfolded and then expanded (as is the case for the matrix and the preform of document WO-94/25655 in particular).
- the invention has been designed for a sleeve serving as a tool for expanding a preform, this tool being of the same general type as the tool for expanding the preform.
- matrix - called matrix - described in WO-94/25655 already cited; this matrix is initially secured to the preform, inside which it is mounted. After inflation of the matrix / preform assembly, and solidification of the preform, the matrix is torn off.
- the invention also applies to sleeves serving as tools for closing off the wall of a well, to prevent leakage of fluid, this tool being commonly designated in the profession under the English name of "packer" .
- tubular sleeve which is the subject of the invention may also consist of the preform itself.
- the present invention aims to propose a sleeve of the kind which has just been mentioned, intended to be used for the casing of a well or a pipe, in particular for petroleum applications, this sleeve having a structure such that its expansion also takes place gradually from one end to the other, this in a perfectly controlled manner, regardless of its length.
- the wall of the sleeve is provided with a series of identical frangible compression rings, and axially offset from one another, and capable of breaking one after the other. the others in the longitudinal direction of the sleeve when it is inflated by an internal fluid under pressure.
- the rings are regularly spaced from each other, of constant spacing;
- the sleeve has a section without a ring
- the sleeve has a section which is provided with rings whose rupture threshold is substantially lower than that of the other rings;
- the section without ring or fitted with rings with a lower breaking threshold is an end zone of the sleeve;
- the section without a ring, or provided with rings with a lower breaking threshold is a central region of the sleeve;
- the rings are embedded inside the wall of the sleeve; - the sleeve is formed from a synthetic elastomeric material;
- the sleeve constitutes a tool used to expand a flexible and radially deformable preform, curable in situ to form the casing of the well or the pipe;
- This sleeve is initially secured to the preform and is extractable at the end of the operation.
- the sleeve constitutes a tool for sealing the well or the pipeline ("packer");
- the sleeve constitutes the flexible and radially deformable preform, curable in situ to itself form the casing of the well or the pipe, after solidification.
- FIG. 1 is a longitudinal sectional view of an assembly consisting of an inflatable tubular sleeve according to the invention, housed inside a flexible preform and curable in situ;
- FIGS. 2 and 3 are cross-sectional views of the preform of Figure 1, respectively before and after radial extension;
- - Figures 4 to 8 are schematic views illustrating different stages of the casing of a well using the assembly shown in Figures 1 and 2;
- Figures 9 and 10 schematically represent variants of the sleeve of Figure 1 (without the associated preform).
- Figure 1 is shown, and designated by the reference 1, a tool for the expansion of a flexible preform, curable in situ - inside a well or a pipe - by polymerization.
- This tool 1 - or matrix - consists of a cylindrical tubular sleeve, of generally elongated shape, the cylindrical wall of which is referenced 10.
- the sleeve is closed at these two ends by transverse partitions 11, 12, one of which is in l 'occurrence the partition 11 - is crossed, sealingly, by a nozzle 4 intended to be connected to a conduit 40 for introducing a pressurized fluid, for example water, inside the sleeve in order to cause it radial expansion.
- the constituent material of the sleeve is for example a synthetic rubber (elastomer) or a material based on elastomer. This material is the same, and its identical mechanical characteristics, over the entire length of the sleeve; it is therefore possible to make it over a great length.
- the sleeve 1 is inserted inside a also tubular preform
- the preform has a wall made of a resin 30 which is initially fluid (malleable), but is heat curable by polymerization. This resin is confined between an outer skin 31, made of flexible and elastic material, and the wall 10 of the sleeve, which acts as an inner skin.
- the axis of the assembly is referenced XX '.
- This assembly is of the same general type as that described in document WO-94/25655 (see in particular Figures 9 to 12).
- Temporary connecting means initially secure the sleeve 1 with the preform 3 which surrounds it. These means are suitable for breaking at the end of the operation (after hardening of the preform) which then allows the internal sleeve to be torn off, as will be explained below.
- the wall of the sleeve 1 is provided with a series of frangible compression rings which are offset axially with respect to each other and are capable of breaking under the effect of a force d extension which exceeds a determined threshold, under the effect of an internal pressure aimed at expanding them radially.
- the rupture threshold of all of the rings 2 is substantially identical. These rings are regularly spaced from each other, of constant spacing e.
- the entire sleeve 1 is not lined with rings. These are provided only on a section IA which corresponds to the major part of the sleeve, of length L, on the side of the nozzle 4 - or upstream side -.
- the side “upstream” will denote the side of the well which opens outwards, through which the inflation fluid arrives, from the well head.
- the section located on the opposite side (downstream), of reduced length I (very substantially less than L), is not provided with rings.
- the rings 2 are toric, that is to say that they have a circular shape and a also circular section, but this is not compulsory.
- Each ring can advantageously consist of a wire, for example plastic or metal, wound on itself over several turns to form a ring.
- the rings are coated with a substance which promotes its sliding relative to the elastomeric material in which they are embedded.
- the substance is for example silicone oil.
- FIG. 4 represents the initial casing phase of an oil wellbore whose wall, approximately cylindrical, is referenced P.
- the well is horizontal; it may however have any direction, in particular be vertical, the invention remaining applicable in this case.
- the diameter of the preform / matrix assembly is chosen so that in the radially expanded state, the preform can be applied properly against this wall P, in order to serve for casing the well.
- the matrix / preform assembly is put in place, by means of an appropriate known tool, from the outside of the well, from left to right, reference is made to FIG. 4; in this figure, the matrix / preform assembly is in the desired position, facing the wall zone P to be tubed.
- This assembly is immersed inside a liquid, such as mud, referenced B which is present in the well.
- this pressurized fluid will inflate the sleeve 1, and the preform which surrounds it, the assembly being expanded radially against the wall P.
- this expansion would take place in an uncontrolled manner, which would risk creating pockets outside the matrix / preform assembly in which a certain volume of liquid B would be trapped, thus upsetting the casing operation.
- the downstream area IB will expand as a priority, because it is devoid of compression rings and therefore has a greater deformability than the rest IA of the sleeve.
- FIG. 3 illustrates a dilation operation during which the ring
- the rings must also be flexible so that their curvature can change and follow that of the sleeve after rupture of the ring.
- the rings are advantageously coated with a coating facilitating the relative sliding of the ring - or pieces of the ring - relative to the material of the wall of the sleeve after rupture of the ring. After solidification of the preform, which has become a rigid casing 3 '
- the sleeve, referenced 5, which is the subject of the variant shown in Figure 9 comprises a main section 5A of length L provided with rings 6 similar to rings 2 described with reference to Figures 1 and 2. These rings all have substantially same relatively high breakpoints.
- the upstream end section, referenced 5B, is also provided with a set of similar rings 7, but whose breaking point is substantially lower than that of the rings 6. However, this breaking point is not negligible.
- the sleeve 5 can therefore contain a non-negligible pressure fluid without deforming radially.
- the sleeve 5 is also associated with a preform, like the sleeve 1 of the previous embodiment, but this has not been shown in FIG. 9 in order not to make it unnecessarily heavy.
- a middle section 8B is devoid of compression rings, over a certain length LB, reduced.
- rings 9 similar to rings 2 of the first embodiment are provided on each of the end sections 8A and 8C, of great length, are respectively referenced LA and L c .
- the middle zone 8B which will expand prioritaire ⁇ ment and be applied against the wall of the well or of the pipe, the propagation of the expansion of the sleeve taking place gradually from this zone in direction of each of the two ends of the sleeve, with simultaneous delivery of the liquid contained in the wells or the pipe towards each of these ends.
- middle zone 8B could also be provided with rings similar to the rings 7 in FIG. 9, and whose rupture threshold would be lower than that of the rings 9.
- the compression rings which, in accordance with the present invention, equip a radially deformable sleeve are not necessarily embedded inside the wall of said sleeve. It could indeed be arranged outside of it.
- the sleeve according to the invention is not necessarily a tool for expanding an initially flexible preform, curable in situ.
- the sleeve according to the invention can also serve as a shutter tool of the "packer" type.
- the sleeve could constitute the preform itself, the compression rings being for example embedded in the polymerizable resin constituting the preform, between two elastic skins.
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69609333T DE69609333T2 (de) | 1995-08-04 | 1996-08-02 | Aufblasbare, rohrförmige manschette zum verrohren oder abdichten eines bohrloches oder einer leitung |
EP96927725A EP0842348B1 (fr) | 1995-08-04 | 1996-08-02 | Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation |
RU98103386A RU2145660C1 (ru) | 1995-08-04 | 1996-08-02 | Надувной трубчатый рукав для трубооборудования или уплотнения скважины или трубы |
US09/011,508 US6044906A (en) | 1995-08-04 | 1996-08-02 | Inflatable tubular sleeve for tubing or obturating a well or pipe |
JP50816997A JP3618354B2 (ja) | 1995-08-04 | 1996-08-02 | 井戸又は管の内に管を付設又は密閉するための膨脹可能の管状スリーブ |
CA002228732A CA2228732C (fr) | 1995-08-04 | 1996-08-02 | Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation |
AT96927725T ATE194686T1 (de) | 1995-08-04 | 1996-08-02 | Aufblasbare, rohrförmige manschette zum verrohren oder abdichten eines bohrloches oder einer leitung |
AU67441/96A AU696825B2 (en) | 1995-08-04 | 1996-08-02 | Inflatable tubular sleeve for tubing or obturating a well or a pipe |
DK96927725T DK0842348T3 (da) | 1995-08-04 | 1996-08-02 | Oppustelig rørformet muffe til foring eller lukning af en brønd eller en rørledning |
NO19980428A NO311627B1 (no) | 1995-08-04 | 1998-01-30 | Oppblåsbar rörformet hylse for rörföring i eller avtetting av en brönn eller et rör |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR95/09694 | 1995-08-04 | ||
FR9509694A FR2737533B1 (fr) | 1995-08-04 | 1995-08-04 | Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997006346A1 true WO1997006346A1 (fr) | 1997-02-20 |
Family
ID=9481844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/001226 WO1997006346A1 (fr) | 1995-08-04 | 1996-08-02 | Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation |
Country Status (13)
Country | Link |
---|---|
US (1) | US6044906A (fr) |
EP (1) | EP0842348B1 (fr) |
JP (1) | JP3618354B2 (fr) |
CN (1) | CN1079886C (fr) |
AT (1) | ATE194686T1 (fr) |
AU (1) | AU696825B2 (fr) |
CA (1) | CA2228732C (fr) |
DE (1) | DE69609333T2 (fr) |
DK (1) | DK0842348T3 (fr) |
FR (1) | FR2737533B1 (fr) |
NO (1) | NO311627B1 (fr) |
RU (1) | RU2145660C1 (fr) |
WO (1) | WO1997006346A1 (fr) |
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US6860329B1 (en) | 1999-09-06 | 2005-03-01 | E2 Tech Limited | Apparatus for and method of including a packer to facilitate anchoring a first conduit to a second conduit |
US7104322B2 (en) | 2003-05-20 | 2006-09-12 | Weatherford/Lamb, Inc. | Open hole anchor and associated method |
US7152684B2 (en) | 2001-12-22 | 2006-12-26 | Weatherford/Lamb, Inc. | Tubular hanger and method of lining a drilled bore |
EP1798370A1 (fr) | 2005-12-14 | 2007-06-20 | Services Petroliers Schlumberger | Méthode et appareil pour construction d'un puits |
WO2009007379A2 (fr) * | 2007-07-12 | 2009-01-15 | Saltel Industries | Procédé de chemisage d'un puits ou d'une canalisation au moyen d'une vessie gonflable |
US7712522B2 (en) | 2003-09-05 | 2010-05-11 | Enventure Global Technology, Llc | Expansion cone and system |
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US5000261A (en) * | 1990-01-24 | 1991-03-19 | Fitzgibbon Jr Daniel F | Inflatable devices for suspending explosives in boreholes |
WO1991018180A1 (fr) * | 1990-05-18 | 1991-11-28 | Philippe Nobileau | Preforme, dispositif et procedes pour tuber et/ou chemiser un volume cylindrique |
GB2247263A (en) * | 1990-08-23 | 1992-02-26 | Baker Hughes Inc | Improved inflatable packing device and method of sealing |
WO1994021887A1 (fr) * | 1993-03-25 | 1994-09-29 | Drillflex | Procede et dispositif pour la cimentation d'un puits |
WO1994025655A1 (fr) * | 1993-05-03 | 1994-11-10 | Drillflex | Structure tubulaire de preforme ou de matrice pour le tubage d'un puits |
US5417289A (en) * | 1993-12-30 | 1995-05-23 | Carisella; James V. | Inflatable packer device including limited initial travel means and method |
US5469919A (en) * | 1993-12-30 | 1995-11-28 | Carisella; James V. | Programmed shape inflatable packer device and method |
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Publication number | Priority date | Publication date | Assignee | Title |
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US4886117A (en) * | 1986-10-24 | 1989-12-12 | Schlumberger Technology Corporation | Inflatable well packers |
FR2626040B1 (fr) * | 1988-01-20 | 1993-10-22 | Hutchinson Sa | Procede d'isolation entre zones de production d'un puits et dispositif de mise en oeuvre de ce procede |
US5709765A (en) * | 1994-10-31 | 1998-01-20 | Xerox Corporation | Flexible belt system |
-
1995
- 1995-08-04 FR FR9509694A patent/FR2737533B1/fr not_active Expired - Lifetime
-
1996
- 1996-08-02 JP JP50816997A patent/JP3618354B2/ja not_active Expired - Fee Related
- 1996-08-02 AT AT96927725T patent/ATE194686T1/de active
- 1996-08-02 WO PCT/FR1996/001226 patent/WO1997006346A1/fr active IP Right Grant
- 1996-08-02 CA CA002228732A patent/CA2228732C/fr not_active Expired - Lifetime
- 1996-08-02 DK DK96927725T patent/DK0842348T3/da active
- 1996-08-02 AU AU67441/96A patent/AU696825B2/en not_active Ceased
- 1996-08-02 CN CN96196732A patent/CN1079886C/zh not_active Expired - Fee Related
- 1996-08-02 RU RU98103386A patent/RU2145660C1/ru not_active IP Right Cessation
- 1996-08-02 DE DE69609333T patent/DE69609333T2/de not_active Expired - Lifetime
- 1996-08-02 US US09/011,508 patent/US6044906A/en not_active Expired - Lifetime
- 1996-08-02 EP EP96927725A patent/EP0842348B1/fr not_active Expired - Lifetime
-
1998
- 1998-01-30 NO NO19980428A patent/NO311627B1/no not_active IP Right Cessation
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DE2728056A1 (de) * | 1977-06-22 | 1979-01-11 | Arikan Geb Kartan Sevinc | Verfahren zum nachtraeglichen anbringen einer schutzhuelle an den innenwandflaechen von rohrfoermigen bauwerken, insbesondere betonrohren, mit kleinen und sehr kleinen querschnittsabmessungen, zwecks abdichtung und/oder ausbildung eines innenflaechenschutzes |
US4781249A (en) * | 1984-04-04 | 1988-11-01 | Completion Tool Company | Progressively inflated packers |
US4979570A (en) * | 1989-11-28 | 1990-12-25 | Baker Hughes Incorporated | Inflatable tool with rib expansion support |
US5000261A (en) * | 1990-01-24 | 1991-03-19 | Fitzgibbon Jr Daniel F | Inflatable devices for suspending explosives in boreholes |
WO1991018180A1 (fr) * | 1990-05-18 | 1991-11-28 | Philippe Nobileau | Preforme, dispositif et procedes pour tuber et/ou chemiser un volume cylindrique |
GB2247263A (en) * | 1990-08-23 | 1992-02-26 | Baker Hughes Inc | Improved inflatable packing device and method of sealing |
WO1994021887A1 (fr) * | 1993-03-25 | 1994-09-29 | Drillflex | Procede et dispositif pour la cimentation d'un puits |
WO1994025655A1 (fr) * | 1993-05-03 | 1994-11-10 | Drillflex | Structure tubulaire de preforme ou de matrice pour le tubage d'un puits |
US5417289A (en) * | 1993-12-30 | 1995-05-23 | Carisella; James V. | Inflatable packer device including limited initial travel means and method |
US5469919A (en) * | 1993-12-30 | 1995-11-28 | Carisella; James V. | Programmed shape inflatable packer device and method |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7124823B2 (en) | 1999-09-06 | 2006-10-24 | E2 Tech Limited | Apparatus for and method of anchoring a first conduit to a second conduit |
US6860329B1 (en) | 1999-09-06 | 2005-03-01 | E2 Tech Limited | Apparatus for and method of including a packer to facilitate anchoring a first conduit to a second conduit |
US7152684B2 (en) | 2001-12-22 | 2006-12-26 | Weatherford/Lamb, Inc. | Tubular hanger and method of lining a drilled bore |
US8746028B2 (en) | 2002-07-11 | 2014-06-10 | Weatherford/Lamb, Inc. | Tubing expansion |
US7886831B2 (en) | 2003-01-22 | 2011-02-15 | Enventure Global Technology, L.L.C. | Apparatus for radially expanding and plastically deforming a tubular member |
US7104322B2 (en) | 2003-05-20 | 2006-09-12 | Weatherford/Lamb, Inc. | Open hole anchor and associated method |
US7712522B2 (en) | 2003-09-05 | 2010-05-11 | Enventure Global Technology, Llc | Expansion cone and system |
US7819185B2 (en) | 2004-08-13 | 2010-10-26 | Enventure Global Technology, Llc | Expandable tubular |
EP1798370A1 (fr) | 2005-12-14 | 2007-06-20 | Services Petroliers Schlumberger | Méthode et appareil pour construction d'un puits |
US8157007B2 (en) | 2007-04-20 | 2012-04-17 | Saltel Industries | Method for casing using multiple expanded areas and using at least one inflatable bladder |
WO2009007379A3 (fr) * | 2007-07-12 | 2009-05-07 | Saltel Ind | Procédé de chemisage d'un puits ou d'une canalisation au moyen d'une vessie gonflable |
FR2918700A1 (fr) * | 2007-07-12 | 2009-01-16 | Saltel Ind Soc Par Actions Sim | Procede de chemisage d'un puits ou d'une canalisation au moyen d'une vessie gonflable. |
EA016686B1 (ru) * | 2007-07-12 | 2012-06-29 | Сальтель Индюстри | Способ укрепления скважины или трубы при помощи накачиваемой камеры |
WO2009007379A2 (fr) * | 2007-07-12 | 2009-01-15 | Saltel Industries | Procédé de chemisage d'un puits ou d'une canalisation au moyen d'une vessie gonflable |
US8770304B2 (en) | 2007-10-03 | 2014-07-08 | Schlumberger Technology Corporation | Open-hole wellbore lining |
US8807211B2 (en) | 2008-03-13 | 2014-08-19 | Maersk Olie Og Gas A/S | Tool for shutting off openings or leaks in a well bore |
Also Published As
Publication number | Publication date |
---|---|
FR2737533B1 (fr) | 1997-10-24 |
NO980428D0 (no) | 1998-01-30 |
RU2145660C1 (ru) | 2000-02-20 |
ATE194686T1 (de) | 2000-07-15 |
DK0842348T3 (da) | 2000-10-23 |
CA2228732A1 (fr) | 1997-02-20 |
JP3618354B2 (ja) | 2005-02-09 |
NO980428L (no) | 1998-04-03 |
CN1079886C (zh) | 2002-02-27 |
JPH11510229A (ja) | 1999-09-07 |
EP0842348B1 (fr) | 2000-07-12 |
EP0842348A1 (fr) | 1998-05-20 |
AU6744196A (en) | 1997-03-05 |
DE69609333D1 (de) | 2000-08-17 |
US6044906A (en) | 2000-04-04 |
FR2737533A1 (fr) | 1997-02-07 |
NO311627B1 (no) | 2001-12-17 |
AU696825B2 (en) | 1998-09-17 |
CN1195389A (zh) | 1998-10-07 |
DE69609333T2 (de) | 2001-03-01 |
CA2228732C (fr) | 2006-10-24 |
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