IE53025B1 - Surfactant enhanced injectivity of xanthan mobility control solutions for tertiary recovery - Google Patents
Surfactant enhanced injectivity of xanthan mobility control solutions for tertiary recoveryInfo
- Publication number
- IE53025B1 IE53025B1 IE2025/82A IE202582A IE53025B1 IE 53025 B1 IE53025 B1 IE 53025B1 IE 2025/82 A IE2025/82 A IE 2025/82A IE 202582 A IE202582 A IE 202582A IE 53025 B1 IE53025 B1 IE 53025B1
- Authority
- IE
- Ireland
- Prior art keywords
- mobility control
- surfactant
- control solution
- xanthan
- ppm
- Prior art date
Links
- 239000004094 surface-active agent Substances 0.000 title claims abstract description 71
- 229920001285 xanthan gum Polymers 0.000 title claims abstract description 49
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000011084 recovery Methods 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 37
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 17
- 239000011780 sodium chloride Substances 0.000 claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000000855 fermentation Methods 0.000 claims abstract description 9
- 230000004151 fermentation Effects 0.000 claims abstract description 9
- 229920001222 biopolymer Polymers 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 4
- -1 nonylphenyl Chemical group 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 6
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 5
- 241000589634 Xanthomonas Species 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 241000589636 Xanthomonas campestris Species 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 125000003342 alkenyl group Chemical group 0.000 claims description 3
- 239000010779 crude oil Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 239000000243 solution Substances 0.000 abstract description 75
- 238000005755 formation reaction Methods 0.000 abstract description 9
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 229920000151 polyglycol Polymers 0.000 abstract description 4
- 239000010695 polyglycol Substances 0.000 abstract description 4
- 239000012267 brine Substances 0.000 description 13
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 13
- 235000010633 broth Nutrition 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007792 addition Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 239000003085 diluting agent Substances 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 238000003556 assay Methods 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 235000011148 calcium chloride Nutrition 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical class CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000003139 biocide Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 229940100484 5-chloro-2-methyl-4-isothiazolin-3-one Drugs 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- QYOVMAREBTZLBT-KTKRTIGZSA-N CCCCCCCC\C=C/CCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO QYOVMAREBTZLBT-KTKRTIGZSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002048 Pluronic® L 92 Polymers 0.000 description 1
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000013504 Triton X-100 Substances 0.000 description 1
- 229920004890 Triton X-100 Polymers 0.000 description 1
- 229920004892 Triton X-102 Polymers 0.000 description 1
- 229920004929 Triton X-114 Polymers 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- DHNRXBZYEKSXIM-UHFFFAOYSA-N chloromethylisothiazolinone Chemical compound CN1SC(Cl)=CC1=O DHNRXBZYEKSXIM-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000012085 test solution 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
- C09K8/905—Biopolymers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S507/00—Earth boring, well treating, and oil field chemistry
- Y10S507/935—Enhanced oil recovery
- Y10S507/936—Flooding the formation
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)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Fats And Perfumes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/295,272 US4406798A (en) | 1981-08-24 | 1981-08-24 | Surfactant enhanced injectivity of xanthan mobility control solutions for tertiary oil recovery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE822025L IE822025L (en) | 1983-02-24 |
| IE53025B1 true IE53025B1 (en) | 1988-05-11 |
Family
ID=23136994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE2025/82A IE53025B1 (en) | 1981-08-24 | 1982-08-23 | Surfactant enhanced injectivity of xanthan mobility control solutions for tertiary recovery |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4406798A (enExample) |
| EP (1) | EP0073612B1 (enExample) |
| JP (1) | JPS5841186A (enExample) |
| AU (1) | AU533783B2 (enExample) |
| BR (1) | BR8204924A (enExample) |
| CA (1) | CA1183341A (enExample) |
| DE (1) | DE3269988D1 (enExample) |
| ES (1) | ES8501791A1 (enExample) |
| IE (1) | IE53025B1 (enExample) |
| IL (1) | IL66616A0 (enExample) |
| MX (2) | MX160859A (enExample) |
| NO (1) | NO159117C (enExample) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4639322A (en) * | 1983-11-03 | 1987-01-27 | Pfizer Inc. | Biopolymer compositions having enhanced filterability |
| DE3531214A1 (de) * | 1985-08-31 | 1987-03-05 | Huels Chemische Werke Ag | Verfahren zur injektivitaetserhoehung von einpressbohrungen bei der oelfoerderung mittels wasserfluten |
| FR2600267A1 (fr) * | 1986-06-19 | 1987-12-24 | Rhone Poulenc Chimie | Granules de biopolymere a dispersabilite et dissolution rapides |
| US4690217A (en) * | 1986-08-15 | 1987-09-01 | Amoco Corporation | Process for water injectivity improvement treatment of water injection wells |
| FR2654152A1 (fr) * | 1989-11-09 | 1991-05-10 | Elf Aquitaine | Procede ameliore de transport des particules en milieu poreux. |
| US5061386A (en) * | 1990-07-16 | 1991-10-29 | Shell Oil Company | Surfactant composition |
| FR2675396B1 (fr) * | 1991-04-19 | 1993-09-17 | Elf Aquitaine | Procede d'amelioration de la dispersibilite et de la filtrabilite des poudres de scleroglucane. |
| US6818594B1 (en) | 1999-11-12 | 2004-11-16 | M-I L.L.C. | Method for the triggered release of polymer-degrading agents for oil field use |
| US8338518B2 (en) * | 2005-06-10 | 2012-12-25 | Arkema Inc. | Aqueous process for making a stable fluoropolymer dispersion |
| US20090054270A1 (en) * | 2007-08-21 | 2009-02-26 | Archer-Daniels-Midalnd Company | Hydrocolloid gum compositions, methods of forming the same, and products formed therefrom |
| US20090127210A1 (en) * | 2007-11-20 | 2009-05-21 | Swisher Anthony E | Method and apparatus for water remediation |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2674619A (en) * | 1953-10-19 | 1954-04-06 | Wyandotte Chemicals Corp | Polyoxyalkylene compounds |
| US3853771A (en) * | 1971-05-17 | 1974-12-10 | Shell Oil Co | Process for dispersing cellular micro-organisms with chelating aqueous alkaline surfactant systems |
| US3801502A (en) * | 1971-09-23 | 1974-04-02 | Phillips Petroleum Co | Waterflood bacterial viscosifier |
| US3712377A (en) * | 1971-10-26 | 1973-01-23 | Shell Oil Co | Oil recovery process using an emulsion modifier-containing dilute aqueous surfactant system |
| US3811505A (en) * | 1973-01-29 | 1974-05-21 | Texaco Inc | Surfactant oil recovery process usable in formations containing water having high concentrations of polyvalent ions such as calcium and magnesium |
| US3882939A (en) * | 1973-05-14 | 1975-05-13 | Marathon Oil Co | Mobility control in adjacent wellbores |
| US4018278A (en) * | 1974-11-25 | 1977-04-19 | Texaco Inc. | Surfactant oil recovery process usable in high temperature formations |
| US4005749A (en) * | 1975-11-11 | 1977-02-01 | Mobil Oil Corporation | Oil recovery by surfactant waterflooding |
| US4008766A (en) * | 1976-03-01 | 1977-02-22 | Mobil Oil Corporation | Oil recovery by waterflooding employing a biopolymer-surfactant system |
| US4077471A (en) * | 1976-12-01 | 1978-03-07 | Texaco Inc. | Surfactant oil recovery process usable in high temperature, high salinity formations |
| GB1562530A (en) * | 1977-11-26 | 1980-03-12 | Texaco Development Corp | Oil recovery process using a tapered surfactant concentration slug |
| US4293428A (en) * | 1978-01-18 | 1981-10-06 | Exxon Production Research Company | Propoxylated ethoxylated surfactants and method of recovering oil therewith |
| US4214999A (en) * | 1978-03-20 | 1980-07-29 | Texaco Inc. | Surfactant flooding oil recovery process |
| US4276933A (en) * | 1978-04-28 | 1981-07-07 | Texaco Inc. | Surfactant waterflood method for the recovery of oil |
| US4212748A (en) * | 1978-05-26 | 1980-07-15 | Conoco, Inc. | Polymer flood filtration improvement |
-
1981
- 1981-08-24 US US06/295,272 patent/US4406798A/en not_active Expired - Lifetime
-
1982
- 1982-08-20 EP EP82304393A patent/EP0073612B1/en not_active Expired
- 1982-08-20 CA CA000409823A patent/CA1183341A/en not_active Expired
- 1982-08-20 MX MX194084A patent/MX160859A/es unknown
- 1982-08-20 DE DE8282304393T patent/DE3269988D1/de not_active Expired
- 1982-08-23 NO NO822858A patent/NO159117C/no unknown
- 1982-08-23 AU AU87522/82A patent/AU533783B2/en not_active Expired - Fee Related
- 1982-08-23 IL IL66616A patent/IL66616A0/xx unknown
- 1982-08-23 BR BR8204924A patent/BR8204924A/pt unknown
- 1982-08-23 ES ES515180A patent/ES8501791A1/es not_active Expired
- 1982-08-23 JP JP57146052A patent/JPS5841186A/ja active Granted
- 1982-08-23 IE IE2025/82A patent/IE53025B1/en not_active IP Right Cessation
-
1990
- 1990-01-18 MX MX19173A patent/MX164631B/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO159117B (no) | 1988-08-22 |
| NO822858L (no) | 1983-02-25 |
| JPH0143120B2 (enExample) | 1989-09-19 |
| BR8204924A (pt) | 1983-08-02 |
| EP0073612A3 (en) | 1983-10-12 |
| JPS5841186A (ja) | 1983-03-10 |
| IL66616A0 (en) | 1982-12-31 |
| CA1183341A (en) | 1985-03-05 |
| EP0073612A2 (en) | 1983-03-09 |
| MX160859A (es) | 1990-06-05 |
| EP0073612B1 (en) | 1986-03-19 |
| AU8752282A (en) | 1983-03-31 |
| ES515180A0 (es) | 1984-01-16 |
| ES8501791A1 (es) | 1984-01-16 |
| DE3269988D1 (en) | 1986-04-24 |
| NO159117C (no) | 1988-11-30 |
| AU533783B2 (en) | 1983-12-08 |
| IE822025L (en) | 1983-02-24 |
| US4406798A (en) | 1983-09-27 |
| MX164631B (es) | 1992-09-10 |
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