MX9504833A - Composicion lubricante para la perforacion de pozos, a base de agua, que contiene un eter, su uso y fluidos de complementacion o de pozo que la contienen. - Google Patents
Composicion lubricante para la perforacion de pozos, a base de agua, que contiene un eter, su uso y fluidos de complementacion o de pozo que la contienen.Info
- Publication number
- MX9504833A MX9504833A MX9504833A MX9504833A MX9504833A MX 9504833 A MX9504833 A MX 9504833A MX 9504833 A MX9504833 A MX 9504833A MX 9504833 A MX9504833 A MX 9504833A MX 9504833 A MX9504833 A MX 9504833A
- Authority
- MX
- Mexico
- Prior art keywords
- well
- ether
- water
- lubricating composition
- complementation
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/02—Water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/2875—Partial esters used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/288—Partial esters containing free carboxyl groups
- C10M2207/2885—Partial esters containing free carboxyl groups used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
- C10M2207/2895—Partial esters containing free hydroxy groups used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Lubricants (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
La presente invencion se refiere a una composicion lubricante optimizada que comprende, en una cantidad util, un éster y un ácido graso. En una variante, la composicion comprende igualmente una amina terciaria, por ejemplo, la trietanolamina. La invencion concierne igualmente a un fluido para pozos que comprende la composicion lubricante de acuerdo con la invencion. La invencion concierne igualmente al uso de la composicion para el control de la capacidad lubricante de un fluido a base de agua.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9414254A FR2727126B1 (fr) | 1994-11-22 | 1994-11-22 | Composition lubrifiante comportant un ester. utilisation de la composition et fluide de puits comportant la composition |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9504833A true MX9504833A (es) | 1997-02-28 |
Family
ID=9469226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9504833A MX9504833A (es) | 1994-11-22 | 1995-11-21 | Composicion lubricante para la perforacion de pozos, a base de agua, que contiene un eter, su uso y fluidos de complementacion o de pozo que la contienen. |
Country Status (21)
Country | Link |
---|---|
US (1) | US5618780A (es) |
EP (1) | EP0713909B1 (es) |
JP (2) | JP4234215B2 (es) |
CN (1) | CN1069339C (es) |
AR (1) | AR000488A1 (es) |
AT (1) | ATE206156T1 (es) |
AU (1) | AU699675B2 (es) |
BR (1) | BR9505241A (es) |
CA (1) | CA2163404C (es) |
DE (1) | DE69522906T2 (es) |
DK (1) | DK0713909T3 (es) |
DZ (1) | DZ1942A1 (es) |
ES (1) | ES2166391T3 (es) |
FR (1) | FR2727126B1 (es) |
MX (1) | MX9504833A (es) |
MY (1) | MY114688A (es) |
NO (1) | NO315521B1 (es) |
NZ (1) | NZ280484A (es) |
PT (1) | PT713909E (es) |
SG (1) | SG44334A1 (es) |
ZA (1) | ZA959853B (es) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0770661A1 (en) * | 1995-10-27 | 1997-05-02 | B W Mud Limited | Lubricant for drilling mud |
DE19647565A1 (de) | 1996-11-18 | 1998-05-20 | Henkel Kgaa | Mehrphasige Schmiermittelkonzentrate für den Einsatz in wasserbasierten Systemen aus dem Bereich der Erdreicherbohrung |
DE19647598A1 (de) | 1996-11-18 | 1998-05-20 | Henkel Kgaa | Verwendung ausgewählter Fettalkohole und ihrer Abmischungen mit Carbonsäureestern als Schmiermittelkomponente in wasserbasierten Bohrspülsystem zum Erdreichaufschluß |
US7238647B2 (en) * | 2000-07-05 | 2007-07-03 | Institut Francais Du Petrole | Method and fluid for controlling the saturation of a formation around a well |
CA2322102A1 (en) * | 2000-10-02 | 2002-04-02 | Chemergy Ltd. | Fracturing fluid |
US6776234B2 (en) * | 2001-12-21 | 2004-08-17 | Edward L. Boudreau | Recovery composition and method |
US6884762B2 (en) * | 2002-10-28 | 2005-04-26 | Newpark Drilling Fluids, L.L.C. | Ester-containing downhole drilling lubricating composition and processes therefor and therewith |
US8716197B2 (en) | 2004-03-03 | 2014-05-06 | Baker Hughes Incorporated | Lubricating compositions for use with downhole fluids |
US8273689B2 (en) * | 2004-03-03 | 2012-09-25 | Baker Hughes Incorporated | Method for lubricating and/or reducing corrosion of drilling equipment |
US7259130B2 (en) * | 2004-08-03 | 2007-08-21 | Halliburton Energy Services, Inc. | Set-on demand, ester-based wellbore fluids and methods of using the same |
CN1331978C (zh) * | 2004-12-09 | 2007-08-15 | 中国石油天然气股份有限公司 | 一种钻井液用聚合醇润滑抑制剂及其应用 |
US20060293192A1 (en) * | 2005-06-22 | 2006-12-28 | Rutgers Organics | Lubricants for drilling fluids and methods for using the same |
US7829506B1 (en) * | 2006-10-30 | 2010-11-09 | Kamyar Tehranchi | Clay stabilizing aqueous drilling fluids |
US8703658B2 (en) | 2007-03-09 | 2014-04-22 | Canadian Energy Services L.P. | Drilling fluid and methods |
CA2594108C (en) * | 2007-03-09 | 2014-06-03 | Techstar Energy Services Inc. | Drilling fluid and methods |
CN102311722A (zh) * | 2010-06-29 | 2012-01-11 | 哈尔滨杰力沃石油科技有限公司 | 石油钻井液用脂肪酸润滑剂 |
FR3000497B1 (fr) * | 2012-12-28 | 2015-04-03 | Total Raffinage Marketing | Concentre d'additifs biodegradable ameliorant la lubrifiance des boues a l'eau, son utilisation et boue a l'eau pour le forage |
WO2016075052A1 (en) | 2014-11-12 | 2016-05-19 | Lamberti Spa | Method of increasing lubricity of wellbore fluids |
CN106543990B (zh) * | 2015-09-23 | 2019-10-29 | 中国石油化工股份有限公司 | 一种提高泥岩钻进速度的钻井液及其制备方法和应用 |
CN105969324B (zh) * | 2016-06-27 | 2018-08-21 | 沧州科迪泥浆有限公司 | 一种水基钻井液用非硫磷润滑剂 |
CN108239569B (zh) * | 2016-12-27 | 2021-12-28 | 西铁城时计株式会社 | 装饰品用润滑处理剂、钟表的制造方法以及钟表 |
US10266745B2 (en) | 2017-02-03 | 2019-04-23 | Saudi Arabian Oil Company | Anti-bit balling drilling fluids, and methods of making and use thereof |
CN107722952B (zh) * | 2017-11-08 | 2019-04-16 | 中国石油大学(北京) | 水基钻井液用合成酯润滑剂和水基钻井液 |
FR3075814B1 (fr) * | 2017-12-27 | 2020-01-17 | Oleon Nv | Additif lubrifiant solide |
US11124687B2 (en) * | 2018-07-17 | 2021-09-21 | Saudi Arabian Oil Company | Synthesized lubricants for water-based drilling fluid systems |
US11365365B2 (en) * | 2019-07-29 | 2022-06-21 | Saudi Arabian Oil Company | Lubricants that include alkyl esters and fatty acids |
US11365337B2 (en) * | 2019-07-29 | 2022-06-21 | Saudi Arabian Oil Company | Lubricants that include alkyl esters and fatty acids |
US11299661B2 (en) * | 2019-07-29 | 2022-04-12 | Saudi Arabian Oil Company | Water-based drilling fluids that include lubricants |
US11542422B2 (en) * | 2019-07-29 | 2023-01-03 | Saudi Arabian Oil Company | Water-based drilling fluids that include lubricants |
CN110591664A (zh) * | 2019-10-23 | 2019-12-20 | 成都碳原时代科技有限公司 | 一种连续油管作业用金属减阻润滑剂 |
US11760920B1 (en) | 2022-04-06 | 2023-09-19 | Halliburton Energy Services, Inc. | Lubricant for monovalent and divalent brines |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3277001A (en) * | 1965-07-06 | 1966-10-04 | Union Oil Co | Aqueous lubricant |
US3507791A (en) * | 1967-02-01 | 1970-04-21 | Sinclair Research Inc | Biodegradable soluble lubricants |
US4113635A (en) * | 1971-12-13 | 1978-09-12 | Nippon Steel Corporation | Rust-proof lubricant compositions |
US4178260A (en) * | 1974-10-31 | 1979-12-11 | Exxon Research & Engineering Co. | Ester based metal working lubricants |
GB1520422A (en) * | 1974-10-31 | 1978-08-09 | Exxon Research Engineering Co | Industrial lubricant |
US4374737A (en) * | 1980-01-14 | 1983-02-22 | Dana E. Larson | Nonpolluting drilling fluid composition |
US4409108A (en) * | 1980-06-02 | 1983-10-11 | Halliburton Company | Lubricating composition for well fluids |
JPS61213296A (ja) * | 1985-03-19 | 1986-09-22 | Kao Corp | 金属材料の冷間圧延用潤滑油 |
SU1481252A1 (ru) * | 1986-10-20 | 1989-05-23 | Уфимский Нефтяной Институт | Промывочна жидкость |
DE3801476A1 (de) * | 1988-01-20 | 1989-08-03 | Henkel Kgaa | Zusammensetzungen zur befreiung festgesetzter bohrgestaenge |
US5318956A (en) * | 1989-05-16 | 1994-06-07 | Henkel Kommanditgesellschaft Auf Aktien | Use of selected ester oils in water-based drilling fluids of the O/W emulsion type and corresponding drilling fluids with improved ecological acceptability |
DE3915876A1 (de) * | 1989-05-16 | 1990-11-22 | Henkel Kgaa | Verwendung ausgewaehlter esteroele in wasser-basierten bohrspuelungen vom o/w-emulsionstyp sowie entsprechende bohrspuelfluessigkeiten mit verbesserter oekologischer vertraeglichkeit |
JPH0459894A (ja) * | 1990-06-29 | 1992-02-26 | Nippon Oil Co Ltd | 潤滑油組成物 |
US5120708A (en) * | 1991-03-06 | 1992-06-09 | Baker Hughes Incorporated | Non-poluting anti-stick water-base drilling fluid modifier and method of use |
RU1808861C (ru) * | 1991-05-15 | 1993-04-15 | Московский Институт Нефти И Газа Им.И.М.Губкина | Смазочный реагент к буровым растворам |
GB9220719D0 (en) * | 1992-10-01 | 1992-11-11 | Alcan Int Ltd | Lubricated metal workpiece and method |
-
1994
- 1994-11-22 FR FR9414254A patent/FR2727126B1/fr not_active Expired - Fee Related
-
1995
- 1995-03-22 US US08/408,309 patent/US5618780A/en not_active Expired - Lifetime
- 1995-11-13 DZ DZ950124A patent/DZ1942A1/fr active
- 1995-11-14 AU AU37825/95A patent/AU699675B2/en not_active Expired
- 1995-11-17 MY MYPI95003516A patent/MY114688A/en unknown
- 1995-11-17 NZ NZ280484A patent/NZ280484A/en not_active IP Right Cessation
- 1995-11-20 CN CN95119619A patent/CN1069339C/zh not_active Expired - Lifetime
- 1995-11-21 PT PT95402622T patent/PT713909E/pt unknown
- 1995-11-21 ES ES95402622T patent/ES2166391T3/es not_active Expired - Lifetime
- 1995-11-21 NO NO19954710A patent/NO315521B1/no not_active IP Right Cessation
- 1995-11-21 BR BR9505241A patent/BR9505241A/pt not_active IP Right Cessation
- 1995-11-21 SG SG1995001877A patent/SG44334A1/en unknown
- 1995-11-21 DK DK95402622T patent/DK0713909T3/da active
- 1995-11-21 EP EP95402622A patent/EP0713909B1/fr not_active Expired - Lifetime
- 1995-11-21 ZA ZA9509853A patent/ZA959853B/xx unknown
- 1995-11-21 AT AT95402622T patent/ATE206156T1/de not_active IP Right Cessation
- 1995-11-21 MX MX9504833A patent/MX9504833A/es unknown
- 1995-11-21 CA CA002163404A patent/CA2163404C/fr not_active Expired - Lifetime
- 1995-11-21 DE DE69522906T patent/DE69522906T2/de not_active Expired - Lifetime
- 1995-11-22 JP JP32808595A patent/JP4234215B2/ja not_active Expired - Lifetime
- 1995-11-22 AR AR33432895A patent/AR000488A1/es unknown
-
2008
- 2008-07-23 JP JP2008189404A patent/JP4246788B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DZ1942A1 (fr) | 2002-02-17 |
ES2166391T3 (es) | 2002-04-16 |
ATE206156T1 (de) | 2001-10-15 |
FR2727126A1 (fr) | 1996-05-24 |
EP0713909A1 (fr) | 1996-05-29 |
AR000488A1 (es) | 1997-07-10 |
DE69522906D1 (de) | 2001-10-31 |
DE69522906T2 (de) | 2002-03-28 |
AU3782595A (en) | 1996-05-30 |
FR2727126B1 (fr) | 1997-04-30 |
CA2163404A1 (fr) | 1996-05-23 |
JP2008291273A (ja) | 2008-12-04 |
SG44334A1 (en) | 1997-12-19 |
CN1069339C (zh) | 2001-08-08 |
ZA959853B (en) | 1997-08-21 |
JPH08283705A (ja) | 1996-10-29 |
NO954710D0 (no) | 1995-11-21 |
EP0713909B1 (fr) | 2001-09-26 |
CA2163404C (fr) | 2007-01-23 |
AU699675B2 (en) | 1998-12-10 |
US5618780A (en) | 1997-04-08 |
BR9505241A (pt) | 1997-09-16 |
JP4246788B2 (ja) | 2009-04-02 |
NZ280484A (en) | 1997-05-26 |
NO954710L (no) | 1996-05-23 |
PT713909E (pt) | 2002-02-28 |
CN1126745A (zh) | 1996-07-17 |
NO315521B1 (no) | 2003-09-15 |
JP4234215B2 (ja) | 2009-03-04 |
DK0713909T3 (da) | 2001-12-31 |
MY114688A (en) | 2002-12-31 |
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