NO318436B1 - Fluider for oljefeltindustri, fremstilling av fluidene og anvendelse ved boring, komplettering, bronnbehandling og fraktureringsbehandling. - Google Patents
Fluider for oljefeltindustri, fremstilling av fluidene og anvendelse ved boring, komplettering, bronnbehandling og fraktureringsbehandling. Download PDFInfo
- Publication number
- NO318436B1 NO318436B1 NO19941439A NO941439A NO318436B1 NO 318436 B1 NO318436 B1 NO 318436B1 NO 19941439 A NO19941439 A NO 19941439A NO 941439 A NO941439 A NO 941439A NO 318436 B1 NO318436 B1 NO 318436B1
- Authority
- NO
- Norway
- Prior art keywords
- particles
- particle size
- average
- fluids
- average particle
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title claims description 83
- 238000005553 drilling Methods 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000011282 treatment Methods 0.000 title description 2
- 239000002245 particle Substances 0.000 claims description 100
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 239000000654 additive Substances 0.000 claims description 31
- 238000004062 sedimentation Methods 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 9
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 8
- 239000004816 latex Substances 0.000 claims description 8
- 229920000126 latex Polymers 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 235000013312 flour Nutrition 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229910021487 silica fume Inorganic materials 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229940075614 colloidal silicon dioxide Drugs 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims 1
- 239000012634 fragment Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 238000000518 rheometry Methods 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 11
- 238000005755 formation reaction Methods 0.000 description 11
- 238000005520 cutting process Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 239000006259 organic additive Substances 0.000 description 6
- 239000011236 particulate material Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 3
- 229910001863 barium hydroxide Inorganic materials 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 229910052595 hematite Inorganic materials 0.000 description 3
- 239000011019 hematite Substances 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 235000013980 iron oxide Nutrition 0.000 description 3
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 3
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 230000003042 antagnostic effect Effects 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000005816 glass manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000013502 plastic waste Substances 0.000 description 2
- 229920000417 polynaphthalene Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 230000002902 bimodal effect Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- C09K8/40—Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses
-
- 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
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/032—Inorganic additives
-
- 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
- C09K8/05—Aqueous well-drilling compositions containing inorganic compounds only, e.g. mixtures of clay and salt
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/5045—Compositions based on water or polar solvents containing inorganic compounds
-
- 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
- C09K8/56—Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
- C09K8/57—Compositions based on water or polar solvents
- C09K8/572—Compositions based on water or polar solvents containing inorganic compounds
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/601—Compositions for stimulating production by acting on the underground formation using spacer compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing Of Solid Wastes (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Colloid Chemistry (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9304801A FR2704231B1 (fr) | 1993-04-21 | 1993-04-21 | Fluides pétroliers leur préparation et leurs utilisations au forage, à la complétion et au traitement de puits, et en fracturation et traitements de matrice. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO941439D0 NO941439D0 (no) | 1994-04-20 |
| NO941439L NO941439L (no) | 1994-10-24 |
| NO318436B1 true NO318436B1 (no) | 2005-03-21 |
Family
ID=9446362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19941439A NO318436B1 (no) | 1993-04-21 | 1994-04-20 | Fluider for oljefeltindustri, fremstilling av fluidene og anvendelse ved boring, komplettering, bronnbehandling og fraktureringsbehandling. |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0621330A1 (fr) |
| AU (1) | AU665306B2 (fr) |
| CA (1) | CA2121771C (fr) |
| FR (1) | FR2704231B1 (fr) |
| GB (1) | GB2277543B (fr) |
| NO (1) | NO318436B1 (fr) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415228A (en) * | 1993-12-07 | 1995-05-16 | Schlumberger Technology Corporation - Dowell Division | Fluid loss control additives for use with gravel pack placement fluids |
| US20030203822A1 (en) | 1996-07-24 | 2003-10-30 | Bradbury Andrew J. | Additive for increasing the density of a fluid for casing annulus pressure control |
| US6786153B2 (en) | 2002-09-19 | 2004-09-07 | Interflex Laser Engravers, Llc | Printing rolls having wear indicators and methods for determining wear of printing and anilox rolls and sleeves |
| GB2315505B (en) | 1996-07-24 | 1998-07-22 | Sofitech Nv | An additive for increasing the density of a fluid and fluid comprising such additve |
| US7267291B2 (en) | 1996-07-24 | 2007-09-11 | M-I Llc | Additive for increasing the density of an oil-based fluid and fluid comprising such additive |
| EA010612B1 (ru) | 2004-06-03 | 2008-10-30 | М-Ай Л. Л. С. | Применение сортированного по размерам барита в качестве утяжелителя для буровых растворов |
| US7789146B2 (en) | 2007-07-25 | 2010-09-07 | Schlumberger Technology Corporation | System and method for low damage gravel packing |
| US8490699B2 (en) | 2007-07-25 | 2013-07-23 | Schlumberger Technology Corporation | High solids content slurry methods |
| US7784541B2 (en) | 2007-07-25 | 2010-08-31 | Schlumberger Technology Corporation | System and method for low damage fracturing |
| US8490698B2 (en) | 2007-07-25 | 2013-07-23 | Schlumberger Technology Corporation | High solids content methods and slurries |
| US8936082B2 (en) | 2007-07-25 | 2015-01-20 | Schlumberger Technology Corporation | High solids content slurry systems and methods |
| US8119574B2 (en) | 2007-07-25 | 2012-02-21 | Schlumberger Technology Corporation | High solids content slurries and methods |
| US9080440B2 (en) | 2007-07-25 | 2015-07-14 | Schlumberger Technology Corporation | Proppant pillar placement in a fracture with high solid content fluid |
| US9040468B2 (en) | 2007-07-25 | 2015-05-26 | Schlumberger Technology Corporation | Hydrolyzable particle compositions, treatment fluids and methods |
| US10011763B2 (en) | 2007-07-25 | 2018-07-03 | Schlumberger Technology Corporation | Methods to deliver fluids on a well site with variable solids concentration from solid slurries |
| US8496056B2 (en) | 2007-07-25 | 2013-07-30 | Schlumberger Technology Corporation | System and method for low damage fracturing |
| US7833947B1 (en) | 2009-06-25 | 2010-11-16 | Schlumberger Technology Corporation | Method for treatment of a well using high solid content fluid delivery |
| US7923415B2 (en) | 2009-08-31 | 2011-04-12 | Schlumberger Technology Corporation | Methods to reduce settling rate of solids in a treatment fluid |
| US8662172B2 (en) | 2010-04-12 | 2014-03-04 | Schlumberger Technology Corporation | Methods to gravel pack a well using expanding materials |
| US8505628B2 (en) | 2010-06-30 | 2013-08-13 | Schlumberger Technology Corporation | High solids content slurries, systems and methods |
| US8511381B2 (en) | 2010-06-30 | 2013-08-20 | Schlumberger Technology Corporation | High solids content slurry methods and systems |
| US8607870B2 (en) | 2010-11-19 | 2013-12-17 | Schlumberger Technology Corporation | Methods to create high conductivity fractures that connect hydraulic fracture networks in a well |
| US9133387B2 (en) | 2011-06-06 | 2015-09-15 | Schlumberger Technology Corporation | Methods to improve stability of high solid content fluid |
| EP2586845B1 (fr) * | 2011-10-28 | 2017-01-25 | Services Pétroliers Schlumberger | Compositions et procédés pour compléter des puits souterrains |
| BR112014010199A8 (pt) * | 2011-10-28 | 2017-06-20 | Prad Res & Development Ltd | método para cimentar um poço em um poço subterrâneo, e método para deslocamento de fluido em um anular |
| US9803457B2 (en) | 2012-03-08 | 2017-10-31 | Schlumberger Technology Corporation | System and method for delivering treatment fluid |
| US9863228B2 (en) | 2012-03-08 | 2018-01-09 | Schlumberger Technology Corporation | System and method for delivering treatment fluid |
| US9528354B2 (en) | 2012-11-14 | 2016-12-27 | Schlumberger Technology Corporation | Downhole tool positioning system and method |
| US9388335B2 (en) | 2013-07-25 | 2016-07-12 | Schlumberger Technology Corporation | Pickering emulsion treatment fluid |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2455188A (en) * | 1946-02-25 | 1948-11-30 | Sun Oil Co | Drilling fluid |
| GB1327735A (en) * | 1972-02-19 | 1973-08-22 | Texaco Development Corp | Method of fracturing fluid bearing underground formations |
| US4217229A (en) * | 1976-09-20 | 1980-08-12 | Halliburton Company | Oil well spacer fluids |
| US4232740A (en) * | 1979-05-23 | 1980-11-11 | Texaco Development Corp. | High temperature stable sand control method |
| US4474665A (en) * | 1981-09-28 | 1984-10-02 | W. R. Grace & Co. | Use of ground, sized cocoa bean shells as a lost circulation material in drilling mud |
| US4519922A (en) * | 1983-03-21 | 1985-05-28 | Halliburton Company | Environmentally compatible high density drill mud or blow-out control fluid |
| GB2185507B (en) * | 1985-12-05 | 1988-12-29 | British Petroleum Co Plc | Shear thinning fluids |
| US4957174A (en) * | 1989-06-29 | 1990-09-18 | Conoco Inc. | Method of controlling lost circulation in well drilling |
| US5118664A (en) * | 1991-03-28 | 1992-06-02 | Bottom Line Industries, Inc. | Lost circulation material with rice fraction |
-
1993
- 1993-04-21 FR FR9304801A patent/FR2704231B1/fr not_active Expired - Fee Related
-
1994
- 1994-04-18 EP EP94400835A patent/EP0621330A1/fr not_active Ceased
- 1994-04-19 AU AU60529/94A patent/AU665306B2/en not_active Expired
- 1994-04-20 NO NO19941439A patent/NO318436B1/no not_active IP Right Cessation
- 1994-04-20 CA CA 2121771 patent/CA2121771C/fr not_active Expired - Lifetime
- 1994-04-21 GB GB9407938A patent/GB2277543B/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AU6052994A (en) | 1994-10-27 |
| CA2121771A1 (fr) | 1994-10-22 |
| FR2704231B1 (fr) | 1995-06-09 |
| GB2277543A (en) | 1994-11-02 |
| GB2277543B (en) | 1996-10-23 |
| EP0621330A1 (fr) | 1994-10-26 |
| AU665306B2 (en) | 1995-12-21 |
| NO941439D0 (no) | 1994-04-20 |
| GB9407938D0 (en) | 1994-06-15 |
| FR2704231A1 (fr) | 1994-10-28 |
| CA2121771C (fr) | 2006-08-22 |
| NO941439L (no) | 1994-10-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CREP | Change of representative |
Representative=s name: ZACCO NORWAY AS, POSTBOKS 2003 VIKA, 0125 OSLO, NO |
|
| MK1K | Patent expired |