CA2176588C - Procede pour l'elimination du dioxyde de carbone d'un gisement houiller et pour la recuperation simultanee du methane de ce gisement - Google Patents
Procede pour l'elimination du dioxyde de carbone d'un gisement houiller et pour la recuperation simultanee du methane de ce gisement Download PDFInfo
- Publication number
- CA2176588C CA2176588C CA002176588A CA2176588A CA2176588C CA 2176588 C CA2176588 C CA 2176588C CA 002176588 A CA002176588 A CA 002176588A CA 2176588 A CA2176588 A CA 2176588A CA 2176588 C CA2176588 C CA 2176588C
- Authority
- CA
- Canada
- Prior art keywords
- formation
- methane
- carbon dioxide
- fluid
- gaseous
- 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 - Lifetime
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 361
- 238000000034 method Methods 0.000 title claims abstract description 97
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims description 300
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims description 151
- 239000001569 carbon dioxide Substances 0.000 title claims description 150
- 239000012530 fluid Substances 0.000 claims abstract description 403
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 399
- 239000007787 solid Substances 0.000 claims abstract description 90
- 239000000203 mixture Substances 0.000 claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 claims description 143
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 142
- 238000002347 injection Methods 0.000 claims description 85
- 239000007924 injection Substances 0.000 claims description 85
- 229910052757 nitrogen Inorganic materials 0.000 claims description 70
- 239000003245 coal Substances 0.000 claims description 47
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 19
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 15
- 239000011593 sulfur Substances 0.000 claims description 15
- 239000002156 adsorbate Substances 0.000 claims description 10
- 238000011084 recovery Methods 0.000 abstract description 48
- 238000005755 formation reaction Methods 0.000 description 380
- 239000011159 matrix material Substances 0.000 description 49
- 239000007789 gas Substances 0.000 description 40
- 238000001179 sorption measurement Methods 0.000 description 37
- 239000003575 carbonaceous material Substances 0.000 description 22
- 241001507939 Cormus domestica Species 0.000 description 18
- 229920006395 saturated elastomer Polymers 0.000 description 18
- 239000000463 material Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 230000001186 cumulative effect Effects 0.000 description 12
- 239000008246 gaseous mixture Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 230000035699 permeability Effects 0.000 description 12
- 238000004891 communication Methods 0.000 description 10
- 238000000926 separation method Methods 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 9
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 8
- 238000009835 boiling Methods 0.000 description 8
- 229930195733 hydrocarbon Natural products 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 8
- 230000000274 adsorptive effect Effects 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 7
- 230000004044 response Effects 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
- 238000005194 fractionation Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- -1 sulfur dioxide (S02) Chemical compound 0.000 description 5
- 238000013022 venting Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- 241000184339 Nemophila maculata Species 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000000035 biogenic effect Effects 0.000 description 2
- VNWKTOKETHGBQD-AKLPVKDBSA-N carbane Chemical compound [15CH4] VNWKTOKETHGBQD-AKLPVKDBSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 230000004941 influx Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZUXNHFFVQWADJL-UHFFFAOYSA-N 3,4,5-trimethoxy-n-(2-methoxyethyl)-n-(4-phenyl-1,3-thiazol-2-yl)benzamide Chemical compound N=1C(C=2C=CC=CC=2)=CSC=1N(CCOC)C(=O)C1=CC(OC)=C(OC)C(OC)=C1 ZUXNHFFVQWADJL-UHFFFAOYSA-N 0.000 description 1
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 101100203924 Caenorhabditis elegans sorb-1 gene Proteins 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 235000015076 Shorea robusta Nutrition 0.000 description 1
- 244000166071 Shorea robusta Species 0.000 description 1
- 208000024780 Urticaria Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 229960003753 nitric oxide Drugs 0.000 description 1
- QQBPIHBUCMDKFG-UHFFFAOYSA-N phenazopyridine hydrochloride Chemical compound Cl.NC1=NC(N)=CC=C1N=NC1=CC=CC=C1 QQBPIHBUCMDKFG-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/005—Waste disposal systems
- E21B41/0057—Disposal of a fluid by injection into a subterranean formation
- E21B41/0064—Carbon dioxide sequestration
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/40—Separation associated with re-injection of separated materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B1/00—Dumping solid waste
-
- 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
- E21B43/006—Production of coal-bed methane
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
Procédé de traitement d'un mélange de fluides gazeux à l'intérieur d'une formation charbonneuse souterraine solide. Selon certains modes de réalisation, l'invention prévoit d'éliminer un fluide gazeux à forte adsorption à l'intérieur du gisement. Selon d'autres modes de réalisation possibles, l'invention prévoit un système de fractionnement d'un mélange de fluides gazeux à l'intérieur du gisement. Selon un autre mode de réalisation, l'invention prévoit la récupération d'un produit de raffinage issu du gisement, enrichi de fluides gazeux à pouvoir d'adsorption relativement plus faible. Toujours selon un autre mode de réalisation possible, l'invention prévoit la récupération du méthane du gisement.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/222,743 | 1994-04-01 | ||
US08/222,743 US5439054A (en) | 1994-04-01 | 1994-04-01 | Method for treating a mixture of gaseous fluids within a solid carbonaceous subterranean formation |
US08/226,454 | 1994-04-12 | ||
US08/226,454 US5454666A (en) | 1994-04-01 | 1994-04-12 | Method for disposing of unwanted gaseous fluid components within a solid carbonaceous subterranean formation |
PCT/US1995/003689 WO1995027123A1 (fr) | 1994-04-01 | 1995-03-24 | Procede pour l'elimination du dioxyde de carbone d'un gisement houiller et pour la recuperation simultanee du methane de ce gisement |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2176588A1 CA2176588A1 (fr) | 1995-10-12 |
CA2176588C true CA2176588C (fr) | 2000-10-03 |
Family
ID=26917099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002176588A Expired - Lifetime CA2176588C (fr) | 1994-04-01 | 1995-03-24 | Procede pour l'elimination du dioxyde de carbone d'un gisement houiller et pour la recuperation simultanee du methane de ce gisement |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN1091832C (fr) |
AU (1) | AU692248B2 (fr) |
CA (1) | CA2176588C (fr) |
PL (1) | PL176443B1 (fr) |
WO (1) | WO1995027123A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7883569B2 (en) | 2007-02-12 | 2011-02-08 | Donald Leo Stinson | Natural gas processing system |
CN101988384B (zh) * | 2010-08-31 | 2015-11-25 | 新奥科技发展有限公司 | 利用烟道气原位干馏地下煤层的方法 |
CN101988383B (zh) * | 2010-08-31 | 2015-11-25 | 新奥科技发展有限公司 | 利用烟道气原位干馏地下煤层的方法 |
MY167145A (en) * | 2011-07-28 | 2018-08-13 | Statoil Petroleum As | Recovery methods for hydrocarbon gas reservoirs |
CN103670357B (zh) * | 2012-09-21 | 2017-06-06 | 新奥科技发展有限公司 | 地下含碳有机矿物储层的裂隙沟通、通道加工及地下气化方法 |
CN103670338B (zh) * | 2012-09-21 | 2016-06-15 | 新奥气化采煤有限公司 | 一种煤层气与煤共采方法 |
NO343888B1 (no) | 2016-10-13 | 2019-07-01 | Terje Ernst Mikalsen | Anvendelse av karbondioksid (CO2) fra et landfast oppdrettsanlegg til fremstilling av metanol og/eller metan. |
CN110792468B (zh) * | 2019-09-06 | 2021-04-20 | 西安科技大学 | 一种煤矿井下循环脉冲注气驱替抽采瓦斯系统 |
CN111005705A (zh) * | 2019-12-25 | 2020-04-14 | 山西晋城无烟煤矿业集团有限责任公司 | 枯竭煤层气井群注二氧化碳增产方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6288171A (ja) * | 1985-10-14 | 1987-04-22 | Nec Corp | デイスク装置 |
US5261490A (en) * | 1991-03-18 | 1993-11-16 | Nkk Corporation | Method for dumping and disposing of carbon dioxide gas and apparatus therefor |
US5332036A (en) * | 1992-05-15 | 1994-07-26 | The Boc Group, Inc. | Method of recovery of natural gases from underground coal formations |
JP3283975B2 (ja) * | 1993-02-03 | 2002-05-20 | 三井鉱山株式会社 | 炭層メタンの回収及び炭酸ガスの地下固定化処理方法 |
-
1995
- 1995-03-24 CN CN95190877A patent/CN1091832C/zh not_active Expired - Lifetime
- 1995-03-24 WO PCT/US1995/003689 patent/WO1995027123A1/fr active Application Filing
- 1995-03-24 AU AU21938/95A patent/AU692248B2/en not_active Expired
- 1995-03-24 CA CA002176588A patent/CA2176588C/fr not_active Expired - Lifetime
- 1995-03-24 PL PL95316630A patent/PL176443B1/pl unknown
Also Published As
Publication number | Publication date |
---|---|
PL176443B1 (pl) | 1999-05-31 |
CN1135782A (zh) | 1996-11-13 |
PL316630A1 (en) | 1997-02-03 |
WO1995027123A1 (fr) | 1995-10-12 |
AU692248B2 (en) | 1998-06-04 |
CN1091832C (zh) | 2002-10-02 |
CA2176588A1 (fr) | 1995-10-12 |
AU2193895A (en) | 1995-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20150324 |