CA1054268A - Traitement d'assainissement des effluents de forages petroliers - Google Patents
Traitement d'assainissement des effluents de forages petroliersInfo
- Publication number
- CA1054268A CA1054268A CA240,079A CA240079A CA1054268A CA 1054268 A CA1054268 A CA 1054268A CA 240079 A CA240079 A CA 240079A CA 1054268 A CA1054268 A CA 1054268A
- Authority
- CA
- Canada
- Prior art keywords
- liquid
- effluent
- treatment
- bacterial
- culture
- 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
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 24
- 238000011282 treatment Methods 0.000 title abstract description 43
- 238000005189 flocculation Methods 0.000 claims abstract description 4
- 230000016615 flocculation Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 229920001732 Lignosulfonate Polymers 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 235000015097 nutrients Nutrition 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229920001222 biopolymer Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000020477 pH reduction Effects 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 230000001580 bacterial effect Effects 0.000 claims 5
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims 2
- 238000006386 neutralization reaction Methods 0.000 claims 2
- 230000035755 proliferation Effects 0.000 claims 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims 1
- 239000012736 aqueous medium Substances 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 238000009630 liquid culture Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 claims 1
- 239000002244 precipitate Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 244000005700 microbiome Species 0.000 abstract description 15
- 239000012530 fluid Substances 0.000 abstract description 7
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000013043 chemical agent Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 16
- 239000010802 sludge Substances 0.000 description 14
- 238000000746 purification Methods 0.000 description 11
- 229930195733 hydrocarbon Natural products 0.000 description 10
- 150000002430 hydrocarbons Chemical class 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000010865 sewage Substances 0.000 description 4
- 238000006065 biodegradation reaction Methods 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 2
- 241000228212 Aspergillus Species 0.000 description 2
- 241000186216 Corynebacterium Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 2
- 235000019289 ammonium phosphates Nutrition 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 238000010908 decantation Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 210000004197 pelvis Anatomy 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920000867 polyelectrolyte Polymers 0.000 description 2
- 238000011012 sanitization Methods 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- SKIIKRJAQOSWFT-UHFFFAOYSA-N 2-[3-[1-(2,2-difluoroethyl)piperidin-4-yl]oxy-4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound FC(CN1CCC(CC1)OC1=NN(C=C1C=1C=NC(=NC=1)NC1CC2=CC=CC=C2C1)CC(=O)N1CC2=C(CC1)NN=N2)F SKIIKRJAQOSWFT-UHFFFAOYSA-N 0.000 description 1
- 241000208140 Acer Species 0.000 description 1
- 241000590020 Achromobacter Species 0.000 description 1
- 241000186046 Actinomyces Species 0.000 description 1
- 240000002234 Allium sativum Species 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 241001133287 Artocarpus hirsutus Species 0.000 description 1
- 241000222120 Candida <Saccharomycetales> Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241001363490 Monilia Species 0.000 description 1
- 241000186359 Mycobacterium Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012136 culture method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 235000004611 garlic Nutrition 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/344—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for digestion of mineral oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/005—Waste disposal systems
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Biological Treatment Of Waste Water (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Activated Sludge Processes (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Dairy Products (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7438681A FR2292677A1 (fr) | 1974-11-26 | 1974-11-26 | Traitement d'assainissement des effluents de forages petroliers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1054268A true CA1054268A (fr) | 1979-05-08 |
Family
ID=9145245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA240,079A Expired CA1054268A (fr) | 1974-11-26 | 1975-11-20 | Traitement d'assainissement des effluents de forages petroliers |
Country Status (15)
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353803A (en) * | 1979-03-05 | 1982-10-12 | Dover Jr Virgil L | Land restoration following oil-well drilling and products useful therefor |
| US4234421A (en) * | 1979-03-05 | 1980-11-18 | Dover Jr Virgil L | Land restoration following oil-well drilling |
| EP0030803A1 (en) * | 1979-12-05 | 1981-06-24 | Serck Industries Limited | Apparatus and method for treating an aqueous effluent which contains suspended oil particles |
| US4536293A (en) * | 1981-06-30 | 1985-08-20 | Babineaux Iii David | Method of treating waste water |
| US4447330A (en) * | 1981-06-30 | 1984-05-08 | Babineaux Iii David | Method of treating waste water |
| JPS58194799A (ja) * | 1982-05-07 | 1983-11-12 | Hitachi Ltd | 単結晶シリコンの製造方法 |
| DE3245593A1 (de) * | 1982-07-03 | 1983-06-09 | Wolfgang 7982 Baienfurt Kappler | Verfahren zur entsorgung verbrauchter tiefbohrspuelungen |
| US4818410B1 (en) * | 1988-01-14 | 1998-06-30 | Petrolite Corp | Method of removing water soluble organics from oil process water |
| CA2084881C (en) * | 1990-06-08 | 1998-01-06 | John Cunningham | Controlled-release microbe nutrients and method for bioremediation |
| FR2669916B1 (fr) * | 1990-11-30 | 1993-09-10 | Lyonnaise Eaux Dumez | Procede de degradation biologique des graisses et dechets graisseux. |
| US5354477A (en) * | 1992-04-07 | 1994-10-11 | Champion Technologies | Low molecular weight amines and amine quaternaries for the removal of soluble organics in oil field produced water |
| US5364532A (en) * | 1992-09-03 | 1994-11-15 | Petrolite Corporation | Method of removing water soluble organics from oil process water |
| US5637223A (en) * | 1992-09-03 | 1997-06-10 | Petrolite Corporation | Method of removing water soluble organics from oil process water |
| US5853592A (en) * | 1992-09-03 | 1998-12-29 | Baker Hughes Incorporated | Method of removing water soluble organics from oil process water with an organic acid and a mineral acid having a plurality of pKa's |
| US5632886A (en) * | 1993-04-02 | 1997-05-27 | Harvey Universal, Inc. | Cutting oil treatment apparatus |
| US5314620A (en) * | 1993-04-02 | 1994-05-24 | Harvey Universal, Inc. | Cutting oil treatment |
| US6159379A (en) * | 1999-05-04 | 2000-12-12 | Baker Hughes Incorporated | Organic ammonium salts for the removal of water soluble organics in produced water |
| GB2358015A (en) * | 2000-01-07 | 2001-07-11 | Cuthbertson Maunsell Ltd | Treatment of oil-based drilling mud cuttings |
| CA2425424A1 (en) * | 2000-10-17 | 2002-04-25 | Earth Alive Resources Inc. | Cleaning solution to remove hydrocarbons from a substrate |
| US7052901B2 (en) | 2000-10-31 | 2006-05-30 | Baker Hughes Incorporated | Bacteria-based and enzyme-based mechanisms and products for viscosity reduction breaking of viscoelastic fluids |
| LT5057B (lt) | 2001-12-05 | 2003-09-25 | Viešoji Įstaiga "Grunto Valymo Technologijos" | Biopreparatas nafta ir jos produktais užterštam gruntui ir vandeniui valyti, jo gavimo būdas ir panaudojimas |
| US20070029752A1 (en) * | 2004-09-17 | 2007-02-08 | Mccann Edward D | Apparatus for transporting drilling fluid additives and methods of making and using same |
| WO2008124514A2 (en) * | 2007-04-04 | 2008-10-16 | Tvt Us Corp. | Fixed film bioprocess for removing carbon compounds in oil and gas drilling sludge |
| EP2445601B1 (en) | 2009-06-25 | 2014-09-03 | FracPure Holdings LLC | Method of making pure salt from frac-water/wastewater |
| US9896355B2 (en) | 2014-01-22 | 2018-02-20 | Michael Green | Method and apparatus for an expandable industrial waste water treatment system |
| CN112358119B (zh) * | 2020-06-30 | 2023-01-20 | 北京工业大学 | 一种分级微絮凝-活性氧化铝慢滤-重力驱动式超滤组合系统 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2259419A (en) * | 1937-10-23 | 1941-10-14 | Dow Chemical Co | Well drilling |
| US3152983A (en) * | 1961-12-12 | 1964-10-13 | Socony Mobil Oil Co Inc | Microbial disposal of oily wastes |
| JPS5113348B1 (US20020128544A1-20020912-P00008.png) * | 1968-04-27 | 1976-04-27 | ||
| US3763038A (en) * | 1970-04-10 | 1973-10-02 | Kurita Water Ind Ltd | Process for purifying water that contains organic matter |
| US3871956A (en) * | 1970-06-03 | 1975-03-18 | Bioteknika International | Microbial degradation of petroleum |
| US3728253A (en) * | 1971-05-05 | 1973-04-17 | Univ California | Accelerated biological-chemical wastewater treatment |
| US3933627A (en) * | 1971-06-28 | 1976-01-20 | Banque Pour L'expansion Industrielle "Banexi" | Process for biologically eliminating organic waste matter |
-
1974
- 1974-11-26 FR FR7438681A patent/FR2292677A1/fr active Granted
-
1975
- 1975-11-18 NL NL7513436A patent/NL7513436A/xx active Search and Examination
- 1975-11-19 BE BE162014A patent/BE835739A/xx not_active IP Right Cessation
- 1975-11-19 ES ES442786A patent/ES442786A1/es not_active Expired
- 1975-11-20 CH CH1504275A patent/CH609018A5/xx not_active IP Right Cessation
- 1975-11-20 CA CA240,079A patent/CA1054268A/fr not_active Expired
- 1975-11-21 AT AT888175A patent/AT345226B/de not_active IP Right Cessation
- 1975-11-21 NO NO753930A patent/NO146462C/no unknown
- 1975-11-21 IT IT2951975A patent/IT1049723B/it active
- 1975-11-22 EG EG68675A patent/EG12077A/xx active
- 1975-11-25 US US05/635,179 patent/US4035289A/en not_active Expired - Lifetime
- 1975-11-25 GB GB4840775A patent/GB1513837A/en not_active Expired
- 1975-11-25 MX MX688575U patent/MX3086E/es unknown
- 1975-11-26 SU SU752193206A patent/SU793375A3/ru active
- 1975-11-26 DE DE2553146A patent/DE2553146C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2553146A1 (de) | 1976-08-12 |
| MX3086E (es) | 1980-03-27 |
| BE835739A (fr) | 1976-05-19 |
| NO146462C (no) | 1982-10-06 |
| FR2292677A1 (fr) | 1976-06-25 |
| US4035289A (en) | 1977-07-12 |
| AU8680975A (en) | 1977-06-09 |
| GB1513837A (en) | 1978-06-14 |
| DE2553146C2 (de) | 1983-05-05 |
| NO753930L (US20020128544A1-20020912-P00008.png) | 1976-05-28 |
| SU793375A3 (ru) | 1980-12-30 |
| IT1049723B (it) | 1981-02-10 |
| CH609018A5 (US20020128544A1-20020912-P00008.png) | 1979-02-15 |
| ES442786A1 (es) | 1977-04-01 |
| AT345226B (de) | 1978-09-11 |
| NL7513436A (nl) | 1976-05-31 |
| NO146462B (no) | 1982-06-28 |
| ATA888175A (de) | 1978-01-15 |
| FR2292677B1 (US20020128544A1-20020912-P00008.png) | 1979-02-23 |
| EG12077A (en) | 1979-03-31 |
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